* [RFC PATCH 0/6] x86: Refactor and consolidate startup code
@ 2025-04-01 13:34 Ard Biesheuvel
2025-04-01 13:34 ` [RFC PATCH 1/6] x86/boot/compressed: Merge local pgtable.h include into asm/boot.h Ard Biesheuvel
` (5 more replies)
0 siblings, 6 replies; 20+ messages in thread
From: Ard Biesheuvel @ 2025-04-01 13:34 UTC (permalink / raw)
To: linux-efi
Cc: linux-kernel, x86, Ard Biesheuvel, Tom Lendacky,
Dionna Amalie Glaze, Kevin Loughlin
From: Ard Biesheuvel <ardb@kernel.org>
Start refactoring the x86 startup code so we keep all the code that is
shared between different boot stages (EFI stub, decompressor, early
startup in the core kernel *) and/or needs to be built in a special way
(due to the fact that it is C code that runs from the 1:1 mapping of
RAM) in a single place, sharing all the C flags and other runes that are
needed to disable instrumentation, sanitizers, etc.
This is an RFC so I have left some things for later, e.g., the SEV-SNP
init code in arch/x86/coco that is shared between all of the above [*]
and will be tricky to disentangle; there are also some known issues in
that code related to EFI boot that we are addressing in parallel.
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Dionna Amalie Glaze <dionnaglaze@google.com>
Cc: Kevin Loughlin <kevinloughlin@google.com>
Ard Biesheuvel (6):
x86/boot/compressed: Merge local pgtable.h include into asm/boot.h
x86/boot: Move 5-level paging trampoline into startup code
x86/boot: Move EFI mixed mode startup code back under arch/x86
x86/boot: Move early GDT/IDT setup code into startup/
x86/boot: Move early kernel mapping code into startup/
x86/boot: Move early SME init code into startup/
arch/x86/Makefile | 1 +
arch/x86/boot/compressed/Makefile | 4 +-
arch/x86/boot/compressed/head_64.S | 1 -
arch/x86/boot/compressed/misc.c | 1 -
arch/x86/boot/compressed/pgtable.h | 18 --
arch/x86/boot/compressed/pgtable_64.c | 1 -
arch/x86/boot/startup/Makefile | 22 ++
drivers/firmware/efi/libstub/x86-mixed.S => arch/x86/boot/startup/efi-mixed.S | 0
arch/x86/boot/startup/gdt_idt.c | 82 ++++++
arch/x86/boot/{compressed => startup}/la57toggle.S | 1 -
arch/x86/boot/startup/map_kernel.c | 232 +++++++++++++++
arch/x86/{mm/mem_encrypt_identity.c => boot/startup/sme.c} | 45 ++-
arch/x86/include/asm/boot.h | 10 +
arch/x86/include/asm/mem_encrypt.h | 2 +-
arch/x86/kernel/head64.c | 302 +-------------------
arch/x86/mm/Makefile | 6 -
drivers/firmware/efi/libstub/Makefile | 1 -
17 files changed, 372 insertions(+), 357 deletions(-)
delete mode 100644 arch/x86/boot/compressed/pgtable.h
create mode 100644 arch/x86/boot/startup/Makefile
rename drivers/firmware/efi/libstub/x86-mixed.S => arch/x86/boot/startup/efi-mixed.S (100%)
create mode 100644 arch/x86/boot/startup/gdt_idt.c
rename arch/x86/boot/{compressed => startup}/la57toggle.S (99%)
create mode 100644 arch/x86/boot/startup/map_kernel.c
rename arch/x86/{mm/mem_encrypt_identity.c => boot/startup/sme.c} (92%)
--
2.49.0.472.ge94155a9ec-goog
^ permalink raw reply [flat|nested] 20+ messages in thread* [RFC PATCH 1/6] x86/boot/compressed: Merge local pgtable.h include into asm/boot.h 2025-04-01 13:34 [RFC PATCH 0/6] x86: Refactor and consolidate startup code Ard Biesheuvel @ 2025-04-01 13:34 ` Ard Biesheuvel 2025-04-06 18:33 ` [tip: x86/boot] x86/boot/compressed: Merge the local pgtable.h include into <asm/boot.h> tip-bot2 for Ard Biesheuvel 2025-04-01 13:34 ` [RFC PATCH 2/6] x86/boot: Move 5-level paging trampoline into startup code Ard Biesheuvel ` (4 subsequent siblings) 5 siblings, 1 reply; 20+ messages in thread From: Ard Biesheuvel @ 2025-04-01 13:34 UTC (permalink / raw) To: linux-efi Cc: linux-kernel, x86, Ard Biesheuvel, Tom Lendacky, Dionna Amalie Glaze, Kevin Loughlin From: Ard Biesheuvel <ardb@kernel.org> Merge the local include "pgtable.h" -which declares the API of the 5-level paging trampoline- into <asm/boot.h> so that its implementation in la57toggle.S as well as the calling code can be decoupled from the traditional decompressor. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> --- arch/x86/boot/compressed/head_64.S | 1 - arch/x86/boot/compressed/la57toggle.S | 1 - arch/x86/boot/compressed/misc.c | 1 - arch/x86/boot/compressed/pgtable.h | 18 ------------------ arch/x86/boot/compressed/pgtable_64.c | 1 - arch/x86/include/asm/boot.h | 10 ++++++++++ 6 files changed, 10 insertions(+), 22 deletions(-) diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S index eafd4f185e77..d9dab940ff62 100644 --- a/arch/x86/boot/compressed/head_64.S +++ b/arch/x86/boot/compressed/head_64.S @@ -35,7 +35,6 @@ #include <asm/bootparam.h> #include <asm/desc_defs.h> #include <asm/trapnr.h> -#include "pgtable.h" /* * Fix alignment at 16 bytes. Following CONFIG_FUNCTION_ALIGNMENT will result diff --git a/arch/x86/boot/compressed/la57toggle.S b/arch/x86/boot/compressed/la57toggle.S index 9ee002387eb1..370075b4d95b 100644 --- a/arch/x86/boot/compressed/la57toggle.S +++ b/arch/x86/boot/compressed/la57toggle.S @@ -5,7 +5,6 @@ #include <asm/boot.h> #include <asm/msr.h> #include <asm/processor-flags.h> -#include "pgtable.h" /* * This is the 32-bit trampoline that will be copied over to low memory. It diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c index 1cdcd4aaf395..94b5991da001 100644 --- a/arch/x86/boot/compressed/misc.c +++ b/arch/x86/boot/compressed/misc.c @@ -14,7 +14,6 @@ #include "misc.h" #include "error.h" -#include "pgtable.h" #include "../string.h" #include "../voffset.h" #include <asm/bootparam_utils.h> diff --git a/arch/x86/boot/compressed/pgtable.h b/arch/x86/boot/compressed/pgtable.h deleted file mode 100644 index 6d595abe06b3..000000000000 --- a/arch/x86/boot/compressed/pgtable.h +++ /dev/null @@ -1,18 +0,0 @@ -#ifndef BOOT_COMPRESSED_PAGETABLE_H -#define BOOT_COMPRESSED_PAGETABLE_H - -#define TRAMPOLINE_32BIT_SIZE (2 * PAGE_SIZE) - -#define TRAMPOLINE_32BIT_CODE_OFFSET PAGE_SIZE -#define TRAMPOLINE_32BIT_CODE_SIZE 0xA0 - -#ifndef __ASSEMBLER__ - -extern unsigned long *trampoline_32bit; - -extern void trampoline_32bit_src(void *trampoline, bool enable_5lvl); - -extern const u16 trampoline_ljmp_imm_offset; - -#endif /* __ASSEMBLER__ */ -#endif /* BOOT_COMPRESSED_PAGETABLE_H */ diff --git a/arch/x86/boot/compressed/pgtable_64.c b/arch/x86/boot/compressed/pgtable_64.c index d8c5de40669d..5a6c7a190e5b 100644 --- a/arch/x86/boot/compressed/pgtable_64.c +++ b/arch/x86/boot/compressed/pgtable_64.c @@ -4,7 +4,6 @@ #include <asm/bootparam_utils.h> #include <asm/e820/types.h> #include <asm/processor.h> -#include "pgtable.h" #include "../string.h" #include "efi.h" diff --git a/arch/x86/include/asm/boot.h b/arch/x86/include/asm/boot.h index 3f02ff6d333d..02b23aa78955 100644 --- a/arch/x86/include/asm/boot.h +++ b/arch/x86/include/asm/boot.h @@ -74,6 +74,11 @@ # define BOOT_STACK_SIZE 0x1000 #endif +#define TRAMPOLINE_32BIT_SIZE (2 * PAGE_SIZE) + +#define TRAMPOLINE_32BIT_CODE_OFFSET PAGE_SIZE +#define TRAMPOLINE_32BIT_CODE_SIZE 0xA0 + #ifndef __ASSEMBLER__ extern unsigned int output_len; extern const unsigned long kernel_text_size; @@ -83,6 +88,11 @@ unsigned long decompress_kernel(unsigned char *outbuf, unsigned long virt_addr, void (*error)(char *x)); extern struct boot_params *boot_params_ptr; +extern unsigned long *trampoline_32bit; +extern const u16 trampoline_ljmp_imm_offset; + +void trampoline_32bit_src(void *trampoline, bool enable_5lvl); + #endif #endif /* _ASM_X86_BOOT_H */ -- 2.49.0.472.ge94155a9ec-goog ^ permalink raw reply related [flat|nested] 20+ messages in thread
* [tip: x86/boot] x86/boot/compressed: Merge the local pgtable.h include into <asm/boot.h> 2025-04-01 13:34 ` [RFC PATCH 1/6] x86/boot/compressed: Merge local pgtable.h include into asm/boot.h Ard Biesheuvel @ 2025-04-06 18:33 ` tip-bot2 for Ard Biesheuvel 0 siblings, 0 replies; 20+ messages in thread From: tip-bot2 for Ard Biesheuvel @ 2025-04-06 18:33 UTC (permalink / raw) To: linux-tip-commits Cc: Ard Biesheuvel, Ingo Molnar, David Woodhouse, H. Peter Anvin, Kees Cook, Linus Torvalds, x86, linux-kernel The following commit has been merged into the x86/boot branch of tip: Commit-ID: 5d4456fc88f7aa9bd139b7c5bd4f1c03f552b973 Gitweb: https://git.kernel.org/tip/5d4456fc88f7aa9bd139b7c5bd4f1c03f552b973 Author: Ard Biesheuvel <ardb@kernel.org> AuthorDate: Tue, 01 Apr 2025 15:34:18 +02:00 Committer: Ingo Molnar <mingo@kernel.org> CommitterDate: Sun, 06 Apr 2025 20:15:14 +02:00 x86/boot/compressed: Merge the local pgtable.h include into <asm/boot.h> Merge the local include "pgtable.h" -which declares the API of the 5-level paging trampoline- into <asm/boot.h> so that its implementation in la57toggle.S as well as the calling code can be decoupled from the traditional decompressor. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: David Woodhouse <dwmw@amazon.co.uk> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Kees Cook <keescook@chromium.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/20250401133416.1436741-9-ardb+git@google.com --- arch/x86/boot/compressed/head_64.S | 1 - arch/x86/boot/compressed/la57toggle.S | 1 - arch/x86/boot/compressed/misc.c | 1 - arch/x86/boot/compressed/pgtable.h | 18 ------------------ arch/x86/boot/compressed/pgtable_64.c | 1 - arch/x86/include/asm/boot.h | 10 ++++++++++ 6 files changed, 10 insertions(+), 22 deletions(-) delete mode 100644 arch/x86/boot/compressed/pgtable.h diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S index eafd4f1..d9dab94 100644 --- a/arch/x86/boot/compressed/head_64.S +++ b/arch/x86/boot/compressed/head_64.S @@ -35,7 +35,6 @@ #include <asm/bootparam.h> #include <asm/desc_defs.h> #include <asm/trapnr.h> -#include "pgtable.h" /* * Fix alignment at 16 bytes. Following CONFIG_FUNCTION_ALIGNMENT will result diff --git a/arch/x86/boot/compressed/la57toggle.S b/arch/x86/boot/compressed/la57toggle.S index 9ee0023..370075b 100644 --- a/arch/x86/boot/compressed/la57toggle.S +++ b/arch/x86/boot/compressed/la57toggle.S @@ -5,7 +5,6 @@ #include <asm/boot.h> #include <asm/msr.h> #include <asm/processor-flags.h> -#include "pgtable.h" /* * This is the 32-bit trampoline that will be copied over to low memory. It diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c index 1cdcd4a..94b5991 100644 --- a/arch/x86/boot/compressed/misc.c +++ b/arch/x86/boot/compressed/misc.c @@ -14,7 +14,6 @@ #include "misc.h" #include "error.h" -#include "pgtable.h" #include "../string.h" #include "../voffset.h" #include <asm/bootparam_utils.h> diff --git a/arch/x86/boot/compressed/pgtable.h b/arch/x86/boot/compressed/pgtable.h deleted file mode 100644 index 6d595ab..0000000 --- a/arch/x86/boot/compressed/pgtable.h +++ /dev/null @@ -1,18 +0,0 @@ -#ifndef BOOT_COMPRESSED_PAGETABLE_H -#define BOOT_COMPRESSED_PAGETABLE_H - -#define TRAMPOLINE_32BIT_SIZE (2 * PAGE_SIZE) - -#define TRAMPOLINE_32BIT_CODE_OFFSET PAGE_SIZE -#define TRAMPOLINE_32BIT_CODE_SIZE 0xA0 - -#ifndef __ASSEMBLER__ - -extern unsigned long *trampoline_32bit; - -extern void trampoline_32bit_src(void *trampoline, bool enable_5lvl); - -extern const u16 trampoline_ljmp_imm_offset; - -#endif /* __ASSEMBLER__ */ -#endif /* BOOT_COMPRESSED_PAGETABLE_H */ diff --git a/arch/x86/boot/compressed/pgtable_64.c b/arch/x86/boot/compressed/pgtable_64.c index d8c5de4..5a6c7a1 100644 --- a/arch/x86/boot/compressed/pgtable_64.c +++ b/arch/x86/boot/compressed/pgtable_64.c @@ -4,7 +4,6 @@ #include <asm/bootparam_utils.h> #include <asm/e820/types.h> #include <asm/processor.h> -#include "pgtable.h" #include "../string.h" #include "efi.h" diff --git a/arch/x86/include/asm/boot.h b/arch/x86/include/asm/boot.h index 3f02ff6..02b23aa 100644 --- a/arch/x86/include/asm/boot.h +++ b/arch/x86/include/asm/boot.h @@ -74,6 +74,11 @@ # define BOOT_STACK_SIZE 0x1000 #endif +#define TRAMPOLINE_32BIT_SIZE (2 * PAGE_SIZE) + +#define TRAMPOLINE_32BIT_CODE_OFFSET PAGE_SIZE +#define TRAMPOLINE_32BIT_CODE_SIZE 0xA0 + #ifndef __ASSEMBLER__ extern unsigned int output_len; extern const unsigned long kernel_text_size; @@ -83,6 +88,11 @@ unsigned long decompress_kernel(unsigned char *outbuf, unsigned long virt_addr, void (*error)(char *x)); extern struct boot_params *boot_params_ptr; +extern unsigned long *trampoline_32bit; +extern const u16 trampoline_ljmp_imm_offset; + +void trampoline_32bit_src(void *trampoline, bool enable_5lvl); + #endif #endif /* _ASM_X86_BOOT_H */ ^ permalink raw reply related [flat|nested] 20+ messages in thread
* [RFC PATCH 2/6] x86/boot: Move 5-level paging trampoline into startup code 2025-04-01 13:34 [RFC PATCH 0/6] x86: Refactor and consolidate startup code Ard Biesheuvel 2025-04-01 13:34 ` [RFC PATCH 1/6] x86/boot/compressed: Merge local pgtable.h include into asm/boot.h Ard Biesheuvel @ 2025-04-01 13:34 ` Ard Biesheuvel 2025-04-06 18:33 ` [tip: x86/boot] x86/boot: Move the 5-level paging trampoline into /startup tip-bot2 for Ard Biesheuvel 2025-04-01 13:34 ` [RFC PATCH 3/6] x86/boot: Move EFI mixed mode startup code back under arch/x86 Ard Biesheuvel ` (3 subsequent siblings) 5 siblings, 1 reply; 20+ messages in thread From: Ard Biesheuvel @ 2025-04-01 13:34 UTC (permalink / raw) To: linux-efi Cc: linux-kernel, x86, Ard Biesheuvel, Tom Lendacky, Dionna Amalie Glaze, Kevin Loughlin From: Ard Biesheuvel <ardb@kernel.org> The 5-level paging trampoline is used by both the EFI stub and the traditional decompressor. Move it out of the decompressor sources into the newly minted arch/x86/boot/startup/ sub-directory which will hold startup code that may be shared between the decompressor, the EFI stub and the kernel proper, and needs to tolerate being called during early boot, before the kernel virtual mapping has been created. This will allow the 5-level paging trampoline to be used by EFI boot images such as zboot that omit the traditional decompressor entirely. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> --- arch/x86/Makefile | 1 + arch/x86/boot/compressed/Makefile | 2 +- arch/x86/boot/startup/Makefile | 3 +++ arch/x86/boot/{compressed => startup}/la57toggle.S | 0 4 files changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/x86/Makefile b/arch/x86/Makefile index 27efe2dc2aa8..c8703276e3e7 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -287,6 +287,7 @@ archprepare: $(cpufeaturemasks.hdr) ### # Kernel objects +core-y += arch/x86/boot/startup/ libs-y += arch/x86/lib/ # drivers-y are linked after core-y diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile index 2eb63536c5d0..468e135de88e 100644 --- a/arch/x86/boot/compressed/Makefile +++ b/arch/x86/boot/compressed/Makefile @@ -98,7 +98,6 @@ ifdef CONFIG_X86_64 vmlinux-objs-$(CONFIG_AMD_MEM_ENCRYPT) += $(obj)/mem_encrypt.o vmlinux-objs-y += $(obj)/pgtable_64.o vmlinux-objs-$(CONFIG_AMD_MEM_ENCRYPT) += $(obj)/sev.o - vmlinux-objs-y += $(obj)/la57toggle.o endif vmlinux-objs-$(CONFIG_ACPI) += $(obj)/acpi.o @@ -107,6 +106,7 @@ vmlinux-objs-$(CONFIG_UNACCEPTED_MEMORY) += $(obj)/mem.o vmlinux-objs-$(CONFIG_EFI) += $(obj)/efi.o vmlinux-libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a +vmlinux-libs-$(CONFIG_X86_64) += $(objtree)/arch/x86/boot/startup/lib.a $(obj)/vmlinux: $(vmlinux-objs-y) $(vmlinux-libs-y) FORCE $(call if_changed,ld) diff --git a/arch/x86/boot/startup/Makefile b/arch/x86/boot/startup/Makefile new file mode 100644 index 000000000000..03519ef4869d --- /dev/null +++ b/arch/x86/boot/startup/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0 + +lib-$(CONFIG_X86_64) += la57toggle.o diff --git a/arch/x86/boot/compressed/la57toggle.S b/arch/x86/boot/startup/la57toggle.S similarity index 100% rename from arch/x86/boot/compressed/la57toggle.S rename to arch/x86/boot/startup/la57toggle.S -- 2.49.0.472.ge94155a9ec-goog ^ permalink raw reply related [flat|nested] 20+ messages in thread
* [tip: x86/boot] x86/boot: Move the 5-level paging trampoline into /startup 2025-04-01 13:34 ` [RFC PATCH 2/6] x86/boot: Move 5-level paging trampoline into startup code Ard Biesheuvel @ 2025-04-06 18:33 ` tip-bot2 for Ard Biesheuvel 0 siblings, 0 replies; 20+ messages in thread From: tip-bot2 for Ard Biesheuvel @ 2025-04-06 18:33 UTC (permalink / raw) To: linux-tip-commits Cc: Ard Biesheuvel, Ingo Molnar, David Woodhouse, H. Peter Anvin, Kees Cook, Linus Torvalds, x86, linux-kernel The following commit has been merged into the x86/boot branch of tip: Commit-ID: 5a67da1f49cf4f16ec9966446885131dad0eb245 Gitweb: https://git.kernel.org/tip/5a67da1f49cf4f16ec9966446885131dad0eb245 Author: Ard Biesheuvel <ardb@kernel.org> AuthorDate: Tue, 01 Apr 2025 15:34:19 +02:00 Committer: Ingo Molnar <mingo@kernel.org> CommitterDate: Sun, 06 Apr 2025 20:15:14 +02:00 x86/boot: Move the 5-level paging trampoline into /startup The 5-level paging trampoline is used by both the EFI stub and the traditional decompressor. Move it out of the decompressor sources into the newly minted arch/x86/boot/startup/ sub-directory which will hold startup code that may be shared between the decompressor, the EFI stub and the kernel proper, and needs to tolerate being called during early boot, before the kernel virtual mapping has been created. This will allow the 5-level paging trampoline to be used by EFI boot images such as zboot that omit the traditional decompressor entirely. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: David Woodhouse <dwmw@amazon.co.uk> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Kees Cook <keescook@chromium.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/20250401133416.1436741-10-ardb+git@google.com --- arch/x86/Makefile | 1 +- arch/x86/boot/compressed/Makefile | 2 +- arch/x86/boot/compressed/la57toggle.S | 111 +------------------------- arch/x86/boot/startup/Makefile | 3 +- arch/x86/boot/startup/la57toggle.S | 111 +++++++++++++++++++++++++- 5 files changed, 116 insertions(+), 112 deletions(-) delete mode 100644 arch/x86/boot/compressed/la57toggle.S create mode 100644 arch/x86/boot/startup/Makefile create mode 100644 arch/x86/boot/startup/la57toggle.S diff --git a/arch/x86/Makefile b/arch/x86/Makefile index 5947230..53daf46 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -281,6 +281,7 @@ archprepare: $(cpufeaturemasks.hdr) ### # Kernel objects +core-y += arch/x86/boot/startup/ libs-y += arch/x86/lib/ # drivers-y are linked after core-y diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile index fdbce02..37b85ce 100644 --- a/arch/x86/boot/compressed/Makefile +++ b/arch/x86/boot/compressed/Makefile @@ -97,7 +97,6 @@ ifdef CONFIG_X86_64 vmlinux-objs-$(CONFIG_AMD_MEM_ENCRYPT) += $(obj)/mem_encrypt.o vmlinux-objs-y += $(obj)/pgtable_64.o vmlinux-objs-$(CONFIG_AMD_MEM_ENCRYPT) += $(obj)/sev.o - vmlinux-objs-y += $(obj)/la57toggle.o endif vmlinux-objs-$(CONFIG_ACPI) += $(obj)/acpi.o @@ -106,6 +105,7 @@ vmlinux-objs-$(CONFIG_UNACCEPTED_MEMORY) += $(obj)/mem.o vmlinux-objs-$(CONFIG_EFI) += $(obj)/efi.o vmlinux-libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a +vmlinux-libs-$(CONFIG_X86_64) += $(objtree)/arch/x86/boot/startup/lib.a $(obj)/vmlinux: $(vmlinux-objs-y) $(vmlinux-libs-y) FORCE $(call if_changed,ld) diff --git a/arch/x86/boot/compressed/la57toggle.S b/arch/x86/boot/compressed/la57toggle.S deleted file mode 100644 index 370075b..0000000 --- a/arch/x86/boot/compressed/la57toggle.S +++ /dev/null @@ -1,111 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -#include <linux/linkage.h> -#include <asm/segment.h> -#include <asm/boot.h> -#include <asm/msr.h> -#include <asm/processor-flags.h> - -/* - * This is the 32-bit trampoline that will be copied over to low memory. It - * will be called using the ordinary 64-bit calling convention from code - * running in 64-bit mode. - * - * Return address is at the top of the stack (might be above 4G). - * The first argument (EDI) contains the address of the temporary PGD level - * page table in 32-bit addressable memory which will be programmed into - * register CR3. - */ - - .section ".rodata", "a", @progbits -SYM_CODE_START(trampoline_32bit_src) - /* - * Preserve callee save 64-bit registers on the stack: this is - * necessary because the architecture does not guarantee that GPRs will - * retain their full 64-bit values across a 32-bit mode switch. - */ - pushq %r15 - pushq %r14 - pushq %r13 - pushq %r12 - pushq %rbp - pushq %rbx - - /* Preserve top half of RSP in a legacy mode GPR to avoid truncation */ - movq %rsp, %rbx - shrq $32, %rbx - - /* Switch to compatibility mode (CS.L = 0 CS.D = 1) via far return */ - pushq $__KERNEL32_CS - leaq 0f(%rip), %rax - pushq %rax - lretq - - /* - * The 32-bit code below will do a far jump back to long mode and end - * up here after reconfiguring the number of paging levels. First, the - * stack pointer needs to be restored to its full 64-bit value before - * the callee save register contents can be popped from the stack. - */ -.Lret: - shlq $32, %rbx - orq %rbx, %rsp - - /* Restore the preserved 64-bit registers */ - popq %rbx - popq %rbp - popq %r12 - popq %r13 - popq %r14 - popq %r15 - retq - - .code32 -0: - /* Disable paging */ - movl %cr0, %eax - btrl $X86_CR0_PG_BIT, %eax - movl %eax, %cr0 - - /* Point CR3 to the trampoline's new top level page table */ - movl %edi, %cr3 - - /* Set EFER.LME=1 as a precaution in case hypervsior pulls the rug */ - movl $MSR_EFER, %ecx - rdmsr - btsl $_EFER_LME, %eax - /* Avoid writing EFER if no change was made (for TDX guest) */ - jc 1f - wrmsr -1: - /* Toggle CR4.LA57 */ - movl %cr4, %eax - btcl $X86_CR4_LA57_BIT, %eax - movl %eax, %cr4 - - /* Enable paging again. */ - movl %cr0, %eax - btsl $X86_CR0_PG_BIT, %eax - movl %eax, %cr0 - - /* - * Return to the 64-bit calling code using LJMP rather than LRET, to - * avoid the need for a 32-bit addressable stack. The destination - * address will be adjusted after the template code is copied into a - * 32-bit addressable buffer. - */ -.Ljmp: ljmpl $__KERNEL_CS, $(.Lret - trampoline_32bit_src) -SYM_CODE_END(trampoline_32bit_src) - -/* - * This symbol is placed right after trampoline_32bit_src() so its address can - * be used to infer the size of the trampoline code. - */ -SYM_DATA(trampoline_ljmp_imm_offset, .word .Ljmp + 1 - trampoline_32bit_src) - - /* - * The trampoline code has a size limit. - * Make sure we fail to compile if the trampoline code grows - * beyond TRAMPOLINE_32BIT_CODE_SIZE bytes. - */ - .org trampoline_32bit_src + TRAMPOLINE_32BIT_CODE_SIZE diff --git a/arch/x86/boot/startup/Makefile b/arch/x86/boot/startup/Makefile new file mode 100644 index 0000000..03519ef --- /dev/null +++ b/arch/x86/boot/startup/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0 + +lib-$(CONFIG_X86_64) += la57toggle.o diff --git a/arch/x86/boot/startup/la57toggle.S b/arch/x86/boot/startup/la57toggle.S new file mode 100644 index 0000000..370075b --- /dev/null +++ b/arch/x86/boot/startup/la57toggle.S @@ -0,0 +1,111 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#include <linux/linkage.h> +#include <asm/segment.h> +#include <asm/boot.h> +#include <asm/msr.h> +#include <asm/processor-flags.h> + +/* + * This is the 32-bit trampoline that will be copied over to low memory. It + * will be called using the ordinary 64-bit calling convention from code + * running in 64-bit mode. + * + * Return address is at the top of the stack (might be above 4G). + * The first argument (EDI) contains the address of the temporary PGD level + * page table in 32-bit addressable memory which will be programmed into + * register CR3. + */ + + .section ".rodata", "a", @progbits +SYM_CODE_START(trampoline_32bit_src) + /* + * Preserve callee save 64-bit registers on the stack: this is + * necessary because the architecture does not guarantee that GPRs will + * retain their full 64-bit values across a 32-bit mode switch. + */ + pushq %r15 + pushq %r14 + pushq %r13 + pushq %r12 + pushq %rbp + pushq %rbx + + /* Preserve top half of RSP in a legacy mode GPR to avoid truncation */ + movq %rsp, %rbx + shrq $32, %rbx + + /* Switch to compatibility mode (CS.L = 0 CS.D = 1) via far return */ + pushq $__KERNEL32_CS + leaq 0f(%rip), %rax + pushq %rax + lretq + + /* + * The 32-bit code below will do a far jump back to long mode and end + * up here after reconfiguring the number of paging levels. First, the + * stack pointer needs to be restored to its full 64-bit value before + * the callee save register contents can be popped from the stack. + */ +.Lret: + shlq $32, %rbx + orq %rbx, %rsp + + /* Restore the preserved 64-bit registers */ + popq %rbx + popq %rbp + popq %r12 + popq %r13 + popq %r14 + popq %r15 + retq + + .code32 +0: + /* Disable paging */ + movl %cr0, %eax + btrl $X86_CR0_PG_BIT, %eax + movl %eax, %cr0 + + /* Point CR3 to the trampoline's new top level page table */ + movl %edi, %cr3 + + /* Set EFER.LME=1 as a precaution in case hypervsior pulls the rug */ + movl $MSR_EFER, %ecx + rdmsr + btsl $_EFER_LME, %eax + /* Avoid writing EFER if no change was made (for TDX guest) */ + jc 1f + wrmsr +1: + /* Toggle CR4.LA57 */ + movl %cr4, %eax + btcl $X86_CR4_LA57_BIT, %eax + movl %eax, %cr4 + + /* Enable paging again. */ + movl %cr0, %eax + btsl $X86_CR0_PG_BIT, %eax + movl %eax, %cr0 + + /* + * Return to the 64-bit calling code using LJMP rather than LRET, to + * avoid the need for a 32-bit addressable stack. The destination + * address will be adjusted after the template code is copied into a + * 32-bit addressable buffer. + */ +.Ljmp: ljmpl $__KERNEL_CS, $(.Lret - trampoline_32bit_src) +SYM_CODE_END(trampoline_32bit_src) + +/* + * This symbol is placed right after trampoline_32bit_src() so its address can + * be used to infer the size of the trampoline code. + */ +SYM_DATA(trampoline_ljmp_imm_offset, .word .Ljmp + 1 - trampoline_32bit_src) + + /* + * The trampoline code has a size limit. + * Make sure we fail to compile if the trampoline code grows + * beyond TRAMPOLINE_32BIT_CODE_SIZE bytes. + */ + .org trampoline_32bit_src + TRAMPOLINE_32BIT_CODE_SIZE ^ permalink raw reply related [flat|nested] 20+ messages in thread
* [RFC PATCH 3/6] x86/boot: Move EFI mixed mode startup code back under arch/x86 2025-04-01 13:34 [RFC PATCH 0/6] x86: Refactor and consolidate startup code Ard Biesheuvel 2025-04-01 13:34 ` [RFC PATCH 1/6] x86/boot/compressed: Merge local pgtable.h include into asm/boot.h Ard Biesheuvel 2025-04-01 13:34 ` [RFC PATCH 2/6] x86/boot: Move 5-level paging trampoline into startup code Ard Biesheuvel @ 2025-04-01 13:34 ` Ard Biesheuvel 2025-04-06 18:33 ` [tip: x86/boot] x86/boot: Move the EFI mixed mode startup code back under arch/x86, into startup/ tip-bot2 for Ard Biesheuvel 2025-04-01 13:34 ` [RFC PATCH 4/6] x86/boot: Move early GDT/IDT setup code " Ard Biesheuvel ` (2 subsequent siblings) 5 siblings, 1 reply; 20+ messages in thread From: Ard Biesheuvel @ 2025-04-01 13:34 UTC (permalink / raw) To: linux-efi Cc: linux-kernel, x86, Ard Biesheuvel, Tom Lendacky, Dionna Amalie Glaze, Kevin Loughlin From: Ard Biesheuvel <ardb@kernel.org> Linus expressed a strong preference for arch-specific asm code (i.e., virtually all of it) to reside under arch/ rather than anywhere else. So move the EFI mixed mode startup code back, and put it under arch/x86/boot/startup/ where all shared x86 startup code is going to live. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> --- arch/x86/boot/startup/Makefile | 3 +++ drivers/firmware/efi/libstub/x86-mixed.S => arch/x86/boot/startup/efi-mixed.S | 0 drivers/firmware/efi/libstub/Makefile | 1 - 3 files changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/boot/startup/Makefile b/arch/x86/boot/startup/Makefile index 03519ef4869d..73946a3f6b3b 100644 --- a/arch/x86/boot/startup/Makefile +++ b/arch/x86/boot/startup/Makefile @@ -1,3 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 +KBUILD_AFLAGS += -D__DISABLE_EXPORTS + lib-$(CONFIG_X86_64) += la57toggle.o +lib-$(CONFIG_EFI_MIXED) += efi-mixed.o diff --git a/drivers/firmware/efi/libstub/x86-mixed.S b/arch/x86/boot/startup/efi-mixed.S similarity index 100% rename from drivers/firmware/efi/libstub/x86-mixed.S rename to arch/x86/boot/startup/efi-mixed.S diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile index d23a1b9fed75..2f173391b63d 100644 --- a/drivers/firmware/efi/libstub/Makefile +++ b/drivers/firmware/efi/libstub/Makefile @@ -85,7 +85,6 @@ lib-$(CONFIG_EFI_GENERIC_STUB) += efi-stub.o string.o intrinsics.o systable.o \ lib-$(CONFIG_ARM) += arm32-stub.o lib-$(CONFIG_ARM64) += kaslr.o arm64.o arm64-stub.o smbios.o lib-$(CONFIG_X86) += x86-stub.o smbios.o -lib-$(CONFIG_EFI_MIXED) += x86-mixed.o lib-$(CONFIG_X86_64) += x86-5lvl.o lib-$(CONFIG_RISCV) += kaslr.o riscv.o riscv-stub.o lib-$(CONFIG_LOONGARCH) += loongarch.o loongarch-stub.o -- 2.49.0.472.ge94155a9ec-goog ^ permalink raw reply related [flat|nested] 20+ messages in thread
* [tip: x86/boot] x86/boot: Move the EFI mixed mode startup code back under arch/x86, into startup/ 2025-04-01 13:34 ` [RFC PATCH 3/6] x86/boot: Move EFI mixed mode startup code back under arch/x86 Ard Biesheuvel @ 2025-04-06 18:33 ` tip-bot2 for Ard Biesheuvel 2025-04-07 7:38 ` Aithal, Srikanth 0 siblings, 1 reply; 20+ messages in thread From: tip-bot2 for Ard Biesheuvel @ 2025-04-06 18:33 UTC (permalink / raw) To: linux-tip-commits Cc: Linus Torvalds, Ard Biesheuvel, Ingo Molnar, David Woodhouse, H. Peter Anvin, Kees Cook, x86, linux-kernel The following commit has been merged into the x86/boot branch of tip: Commit-ID: 4f2d1bbc2c92a32fd612e6c3b51832d5c1c3678e Gitweb: https://git.kernel.org/tip/4f2d1bbc2c92a32fd612e6c3b51832d5c1c3678e Author: Ard Biesheuvel <ardb@kernel.org> AuthorDate: Tue, 01 Apr 2025 15:34:20 +02:00 Committer: Ingo Molnar <mingo@kernel.org> CommitterDate: Sun, 06 Apr 2025 20:15:14 +02:00 x86/boot: Move the EFI mixed mode startup code back under arch/x86, into startup/ Linus expressed a strong preference for arch-specific asm code (i.e., virtually all of it) to reside under arch/ rather than anywhere else. So move the EFI mixed mode startup code back, and put it under arch/x86/boot/startup/ where all shared x86 startup code is going to live. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: David Woodhouse <dwmw@amazon.co.uk> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20250401133416.1436741-11-ardb+git@google.com --- arch/x86/boot/startup/Makefile | 3 +- arch/x86/boot/startup/efi-mixed.S | 253 ++++++++++++++++++++++- drivers/firmware/efi/libstub/Makefile | 1 +- drivers/firmware/efi/libstub/x86-mixed.S | 253 +---------------------- 4 files changed, 256 insertions(+), 254 deletions(-) create mode 100644 arch/x86/boot/startup/efi-mixed.S delete mode 100644 drivers/firmware/efi/libstub/x86-mixed.S diff --git a/arch/x86/boot/startup/Makefile b/arch/x86/boot/startup/Makefile index 03519ef..73946a3 100644 --- a/arch/x86/boot/startup/Makefile +++ b/arch/x86/boot/startup/Makefile @@ -1,3 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 +KBUILD_AFLAGS += -D__DISABLE_EXPORTS + lib-$(CONFIG_X86_64) += la57toggle.o +lib-$(CONFIG_EFI_MIXED) += efi-mixed.o diff --git a/arch/x86/boot/startup/efi-mixed.S b/arch/x86/boot/startup/efi-mixed.S new file mode 100644 index 0000000..e04ed99 --- /dev/null +++ b/arch/x86/boot/startup/efi-mixed.S @@ -0,0 +1,253 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2014, 2015 Intel Corporation; author Matt Fleming + * + * Early support for invoking 32-bit EFI services from a 64-bit kernel. + * + * Because this thunking occurs before ExitBootServices() we have to + * restore the firmware's 32-bit GDT and IDT before we make EFI service + * calls. + * + * On the plus side, we don't have to worry about mangling 64-bit + * addresses into 32-bits because we're executing with an identity + * mapped pagetable and haven't transitioned to 64-bit virtual addresses + * yet. + */ + +#include <linux/linkage.h> +#include <asm/desc_defs.h> +#include <asm/msr.h> +#include <asm/page_types.h> +#include <asm/pgtable_types.h> +#include <asm/processor-flags.h> +#include <asm/segment.h> + + .text + .code32 +#ifdef CONFIG_EFI_HANDOVER_PROTOCOL +SYM_FUNC_START(efi32_stub_entry) + call 1f +1: popl %ecx + + /* Clear BSS */ + xorl %eax, %eax + leal (_bss - 1b)(%ecx), %edi + leal (_ebss - 1b)(%ecx), %ecx + subl %edi, %ecx + shrl $2, %ecx + cld + rep stosl + + add $0x4, %esp /* Discard return address */ + movl 8(%esp), %ebx /* struct boot_params pointer */ + jmp efi32_startup +SYM_FUNC_END(efi32_stub_entry) +#endif + +/* + * Called using a far call from __efi64_thunk() below, using the x86_64 SysV + * ABI (except for R8/R9 which are inaccessible to 32-bit code - EAX/EBX are + * used instead). EBP+16 points to the arguments passed via the stack. + * + * The first argument (EDI) is a pointer to the boot service or protocol, to + * which the remaining arguments are passed, each truncated to 32 bits. + */ +SYM_FUNC_START_LOCAL(efi_enter32) + /* + * Convert x86-64 SysV ABI params to i386 ABI + */ + pushl 32(%ebp) /* Up to 3 args passed via the stack */ + pushl 24(%ebp) + pushl 16(%ebp) + pushl %ebx /* R9 */ + pushl %eax /* R8 */ + pushl %ecx + pushl %edx + pushl %esi + + /* Disable paging */ + movl %cr0, %eax + btrl $X86_CR0_PG_BIT, %eax + movl %eax, %cr0 + + /* Disable long mode via EFER */ + movl $MSR_EFER, %ecx + rdmsr + btrl $_EFER_LME, %eax + wrmsr + + call *%edi + + /* We must preserve return value */ + movl %eax, %edi + + call efi32_enable_long_mode + + addl $32, %esp + movl %edi, %eax + lret +SYM_FUNC_END(efi_enter32) + + .code64 +SYM_FUNC_START(__efi64_thunk) + push %rbp + movl %esp, %ebp + push %rbx + + /* Move args #5 and #6 into 32-bit accessible registers */ + movl %r8d, %eax + movl %r9d, %ebx + + lcalll *efi32_call(%rip) + + pop %rbx + pop %rbp + RET +SYM_FUNC_END(__efi64_thunk) + + .code32 +SYM_FUNC_START_LOCAL(efi32_enable_long_mode) + movl %cr4, %eax + btsl $(X86_CR4_PAE_BIT), %eax + movl %eax, %cr4 + + movl $MSR_EFER, %ecx + rdmsr + btsl $_EFER_LME, %eax + wrmsr + + /* Disable interrupts - the firmware's IDT does not work in long mode */ + cli + + /* Enable paging */ + movl %cr0, %eax + btsl $X86_CR0_PG_BIT, %eax + movl %eax, %cr0 + ret +SYM_FUNC_END(efi32_enable_long_mode) + +/* + * This is the common EFI stub entry point for mixed mode. It sets up the GDT + * and page tables needed for 64-bit execution, after which it calls the + * common 64-bit EFI entrypoint efi_stub_entry(). + * + * Arguments: 0(%esp) image handle + * 4(%esp) EFI system table pointer + * %ebx struct boot_params pointer (or NULL) + * + * Since this is the point of no return for ordinary execution, no registers + * are considered live except for the function parameters. [Note that the EFI + * stub may still exit and return to the firmware using the Exit() EFI boot + * service.] + */ +SYM_FUNC_START_LOCAL(efi32_startup) + movl %esp, %ebp + + subl $8, %esp + sgdtl (%esp) /* Save GDT descriptor to the stack */ + movl 2(%esp), %esi /* Existing GDT pointer */ + movzwl (%esp), %ecx /* Existing GDT limit */ + inc %ecx /* Existing GDT size */ + andl $~7, %ecx /* Ensure size is multiple of 8 */ + + subl %ecx, %esp /* Allocate new GDT */ + andl $~15, %esp /* Realign the stack */ + movl %esp, %edi /* New GDT address */ + leal 7(%ecx), %eax /* New GDT limit */ + pushw %cx /* Push 64-bit CS (for LJMP below) */ + pushl %edi /* Push new GDT address */ + pushw %ax /* Push new GDT limit */ + + /* Copy GDT to the stack and add a 64-bit code segment at the end */ + movl $GDT_ENTRY(DESC_CODE64, 0, 0xfffff) & 0xffffffff, (%edi,%ecx) + movl $GDT_ENTRY(DESC_CODE64, 0, 0xfffff) >> 32, 4(%edi,%ecx) + shrl $2, %ecx + cld + rep movsl /* Copy the firmware GDT */ + lgdtl (%esp) /* Switch to the new GDT */ + + call 1f +1: pop %edi + + /* Record mixed mode entry */ + movb $0x0, (efi_is64 - 1b)(%edi) + + /* Set up indirect far call to re-enter 32-bit mode */ + leal (efi32_call - 1b)(%edi), %eax + addl %eax, (%eax) + movw %cs, 4(%eax) + + /* Disable paging */ + movl %cr0, %eax + btrl $X86_CR0_PG_BIT, %eax + movl %eax, %cr0 + + /* Set up 1:1 mapping */ + leal (pte - 1b)(%edi), %eax + movl $_PAGE_PRESENT | _PAGE_RW | _PAGE_PSE, %ecx + leal (_PAGE_PRESENT | _PAGE_RW)(%eax), %edx +2: movl %ecx, (%eax) + addl $8, %eax + addl $PMD_SIZE, %ecx + jnc 2b + + movl $PAGE_SIZE, %ecx + .irpc l, 0123 + movl %edx, \l * 8(%eax) + addl %ecx, %edx + .endr + addl %ecx, %eax + movl %edx, (%eax) + movl %eax, %cr3 + + call efi32_enable_long_mode + + /* Set up far jump to 64-bit mode (CS is already on the stack) */ + leal (efi_stub_entry - 1b)(%edi), %eax + movl %eax, 2(%esp) + + movl 0(%ebp), %edi + movl 4(%ebp), %esi + movl %ebx, %edx + ljmpl *2(%esp) +SYM_FUNC_END(efi32_startup) + +/* + * efi_status_t efi32_pe_entry(efi_handle_t image_handle, + * efi_system_table_32_t *sys_table) + */ +SYM_FUNC_START(efi32_pe_entry) + pushl %ebx // save callee-save registers + + /* Check whether the CPU supports long mode */ + movl $0x80000001, %eax // assume extended info support + cpuid + btl $29, %edx // check long mode bit + jnc 1f + leal 8(%esp), %esp // preserve stack alignment + xor %ebx, %ebx // no struct boot_params pointer + jmp efi32_startup // only ESP and EBX remain live +1: movl $0x80000003, %eax // EFI_UNSUPPORTED + popl %ebx + RET +SYM_FUNC_END(efi32_pe_entry) + +#ifdef CONFIG_EFI_HANDOVER_PROTOCOL + .org efi32_stub_entry + 0x200 + .code64 +SYM_FUNC_START_NOALIGN(efi64_stub_entry) + jmp efi_handover_entry +SYM_FUNC_END(efi64_stub_entry) +#endif + + .data + .balign 8 +SYM_DATA_START_LOCAL(efi32_call) + .long efi_enter32 - . + .word 0x0 +SYM_DATA_END(efi32_call) +SYM_DATA(efi_is64, .byte 1) + + .bss + .balign PAGE_SIZE +SYM_DATA_LOCAL(pte, .fill 6 * PAGE_SIZE, 1, 0) diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile index d23a1b9..2f17339 100644 --- a/drivers/firmware/efi/libstub/Makefile +++ b/drivers/firmware/efi/libstub/Makefile @@ -85,7 +85,6 @@ lib-$(CONFIG_EFI_GENERIC_STUB) += efi-stub.o string.o intrinsics.o systable.o \ lib-$(CONFIG_ARM) += arm32-stub.o lib-$(CONFIG_ARM64) += kaslr.o arm64.o arm64-stub.o smbios.o lib-$(CONFIG_X86) += x86-stub.o smbios.o -lib-$(CONFIG_EFI_MIXED) += x86-mixed.o lib-$(CONFIG_X86_64) += x86-5lvl.o lib-$(CONFIG_RISCV) += kaslr.o riscv.o riscv-stub.o lib-$(CONFIG_LOONGARCH) += loongarch.o loongarch-stub.o diff --git a/drivers/firmware/efi/libstub/x86-mixed.S b/drivers/firmware/efi/libstub/x86-mixed.S deleted file mode 100644 index e04ed99..0000000 --- a/drivers/firmware/efi/libstub/x86-mixed.S +++ /dev/null @@ -1,253 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * Copyright (C) 2014, 2015 Intel Corporation; author Matt Fleming - * - * Early support for invoking 32-bit EFI services from a 64-bit kernel. - * - * Because this thunking occurs before ExitBootServices() we have to - * restore the firmware's 32-bit GDT and IDT before we make EFI service - * calls. - * - * On the plus side, we don't have to worry about mangling 64-bit - * addresses into 32-bits because we're executing with an identity - * mapped pagetable and haven't transitioned to 64-bit virtual addresses - * yet. - */ - -#include <linux/linkage.h> -#include <asm/desc_defs.h> -#include <asm/msr.h> -#include <asm/page_types.h> -#include <asm/pgtable_types.h> -#include <asm/processor-flags.h> -#include <asm/segment.h> - - .text - .code32 -#ifdef CONFIG_EFI_HANDOVER_PROTOCOL -SYM_FUNC_START(efi32_stub_entry) - call 1f -1: popl %ecx - - /* Clear BSS */ - xorl %eax, %eax - leal (_bss - 1b)(%ecx), %edi - leal (_ebss - 1b)(%ecx), %ecx - subl %edi, %ecx - shrl $2, %ecx - cld - rep stosl - - add $0x4, %esp /* Discard return address */ - movl 8(%esp), %ebx /* struct boot_params pointer */ - jmp efi32_startup -SYM_FUNC_END(efi32_stub_entry) -#endif - -/* - * Called using a far call from __efi64_thunk() below, using the x86_64 SysV - * ABI (except for R8/R9 which are inaccessible to 32-bit code - EAX/EBX are - * used instead). EBP+16 points to the arguments passed via the stack. - * - * The first argument (EDI) is a pointer to the boot service or protocol, to - * which the remaining arguments are passed, each truncated to 32 bits. - */ -SYM_FUNC_START_LOCAL(efi_enter32) - /* - * Convert x86-64 SysV ABI params to i386 ABI - */ - pushl 32(%ebp) /* Up to 3 args passed via the stack */ - pushl 24(%ebp) - pushl 16(%ebp) - pushl %ebx /* R9 */ - pushl %eax /* R8 */ - pushl %ecx - pushl %edx - pushl %esi - - /* Disable paging */ - movl %cr0, %eax - btrl $X86_CR0_PG_BIT, %eax - movl %eax, %cr0 - - /* Disable long mode via EFER */ - movl $MSR_EFER, %ecx - rdmsr - btrl $_EFER_LME, %eax - wrmsr - - call *%edi - - /* We must preserve return value */ - movl %eax, %edi - - call efi32_enable_long_mode - - addl $32, %esp - movl %edi, %eax - lret -SYM_FUNC_END(efi_enter32) - - .code64 -SYM_FUNC_START(__efi64_thunk) - push %rbp - movl %esp, %ebp - push %rbx - - /* Move args #5 and #6 into 32-bit accessible registers */ - movl %r8d, %eax - movl %r9d, %ebx - - lcalll *efi32_call(%rip) - - pop %rbx - pop %rbp - RET -SYM_FUNC_END(__efi64_thunk) - - .code32 -SYM_FUNC_START_LOCAL(efi32_enable_long_mode) - movl %cr4, %eax - btsl $(X86_CR4_PAE_BIT), %eax - movl %eax, %cr4 - - movl $MSR_EFER, %ecx - rdmsr - btsl $_EFER_LME, %eax - wrmsr - - /* Disable interrupts - the firmware's IDT does not work in long mode */ - cli - - /* Enable paging */ - movl %cr0, %eax - btsl $X86_CR0_PG_BIT, %eax - movl %eax, %cr0 - ret -SYM_FUNC_END(efi32_enable_long_mode) - -/* - * This is the common EFI stub entry point for mixed mode. It sets up the GDT - * and page tables needed for 64-bit execution, after which it calls the - * common 64-bit EFI entrypoint efi_stub_entry(). - * - * Arguments: 0(%esp) image handle - * 4(%esp) EFI system table pointer - * %ebx struct boot_params pointer (or NULL) - * - * Since this is the point of no return for ordinary execution, no registers - * are considered live except for the function parameters. [Note that the EFI - * stub may still exit and return to the firmware using the Exit() EFI boot - * service.] - */ -SYM_FUNC_START_LOCAL(efi32_startup) - movl %esp, %ebp - - subl $8, %esp - sgdtl (%esp) /* Save GDT descriptor to the stack */ - movl 2(%esp), %esi /* Existing GDT pointer */ - movzwl (%esp), %ecx /* Existing GDT limit */ - inc %ecx /* Existing GDT size */ - andl $~7, %ecx /* Ensure size is multiple of 8 */ - - subl %ecx, %esp /* Allocate new GDT */ - andl $~15, %esp /* Realign the stack */ - movl %esp, %edi /* New GDT address */ - leal 7(%ecx), %eax /* New GDT limit */ - pushw %cx /* Push 64-bit CS (for LJMP below) */ - pushl %edi /* Push new GDT address */ - pushw %ax /* Push new GDT limit */ - - /* Copy GDT to the stack and add a 64-bit code segment at the end */ - movl $GDT_ENTRY(DESC_CODE64, 0, 0xfffff) & 0xffffffff, (%edi,%ecx) - movl $GDT_ENTRY(DESC_CODE64, 0, 0xfffff) >> 32, 4(%edi,%ecx) - shrl $2, %ecx - cld - rep movsl /* Copy the firmware GDT */ - lgdtl (%esp) /* Switch to the new GDT */ - - call 1f -1: pop %edi - - /* Record mixed mode entry */ - movb $0x0, (efi_is64 - 1b)(%edi) - - /* Set up indirect far call to re-enter 32-bit mode */ - leal (efi32_call - 1b)(%edi), %eax - addl %eax, (%eax) - movw %cs, 4(%eax) - - /* Disable paging */ - movl %cr0, %eax - btrl $X86_CR0_PG_BIT, %eax - movl %eax, %cr0 - - /* Set up 1:1 mapping */ - leal (pte - 1b)(%edi), %eax - movl $_PAGE_PRESENT | _PAGE_RW | _PAGE_PSE, %ecx - leal (_PAGE_PRESENT | _PAGE_RW)(%eax), %edx -2: movl %ecx, (%eax) - addl $8, %eax - addl $PMD_SIZE, %ecx - jnc 2b - - movl $PAGE_SIZE, %ecx - .irpc l, 0123 - movl %edx, \l * 8(%eax) - addl %ecx, %edx - .endr - addl %ecx, %eax - movl %edx, (%eax) - movl %eax, %cr3 - - call efi32_enable_long_mode - - /* Set up far jump to 64-bit mode (CS is already on the stack) */ - leal (efi_stub_entry - 1b)(%edi), %eax - movl %eax, 2(%esp) - - movl 0(%ebp), %edi - movl 4(%ebp), %esi - movl %ebx, %edx - ljmpl *2(%esp) -SYM_FUNC_END(efi32_startup) - -/* - * efi_status_t efi32_pe_entry(efi_handle_t image_handle, - * efi_system_table_32_t *sys_table) - */ -SYM_FUNC_START(efi32_pe_entry) - pushl %ebx // save callee-save registers - - /* Check whether the CPU supports long mode */ - movl $0x80000001, %eax // assume extended info support - cpuid - btl $29, %edx // check long mode bit - jnc 1f - leal 8(%esp), %esp // preserve stack alignment - xor %ebx, %ebx // no struct boot_params pointer - jmp efi32_startup // only ESP and EBX remain live -1: movl $0x80000003, %eax // EFI_UNSUPPORTED - popl %ebx - RET -SYM_FUNC_END(efi32_pe_entry) - -#ifdef CONFIG_EFI_HANDOVER_PROTOCOL - .org efi32_stub_entry + 0x200 - .code64 -SYM_FUNC_START_NOALIGN(efi64_stub_entry) - jmp efi_handover_entry -SYM_FUNC_END(efi64_stub_entry) -#endif - - .data - .balign 8 -SYM_DATA_START_LOCAL(efi32_call) - .long efi_enter32 - . - .word 0x0 -SYM_DATA_END(efi32_call) -SYM_DATA(efi_is64, .byte 1) - - .bss - .balign PAGE_SIZE -SYM_DATA_LOCAL(pte, .fill 6 * PAGE_SIZE, 1, 0) ^ permalink raw reply related [flat|nested] 20+ messages in thread
* Re: [tip: x86/boot] x86/boot: Move the EFI mixed mode startup code back under arch/x86, into startup/ 2025-04-06 18:33 ` [tip: x86/boot] x86/boot: Move the EFI mixed mode startup code back under arch/x86, into startup/ tip-bot2 for Ard Biesheuvel @ 2025-04-07 7:38 ` Aithal, Srikanth 2025-04-07 8:30 ` Ard Biesheuvel 0 siblings, 1 reply; 20+ messages in thread From: Aithal, Srikanth @ 2025-04-07 7:38 UTC (permalink / raw) To: linux-kernel Cc: Ard Biesheuvel, Ingo Molnar, David Woodhouse, H. Peter Anvin, Kees Cook, x86 [-- Attachment #1: Type: text/plain, Size: 17728 bytes --] Hello, This commit breaks the build of next-20250407. The kernel config is attached here. Build error: arch/x86/boot/startup/efi-mixed.o: warning: objtool: efi32_stub_entry+0x0: unannotated intra-function call make[3]: *** [scripts/Makefile.build:335: arch/x86/boot/startup/efi-mixed.o] Error 255 make[3]: *** Deleting file 'arch/x86/boot/startup/efi-mixed.o' make[3]: *** Waiting for unfinished jobs.... make[2]: *** [scripts/Makefile.build:461: arch/x86/boot/startup] Error 2 make[2]: *** Waiting for unfinished jobs.... make[1]: *** [/home/VT_BUILD/linux/Makefile:2006: .] Error 2 make: *** [Makefile:248: __sub-make] Error 2 Thanks, Srikanth Aithal <sraithal@amd.com> On 4/7/2025 12:03 AM, tip-bot2 for Ard Biesheuvel wrote: > The following commit has been merged into the x86/boot branch of tip: > > Commit-ID: 4f2d1bbc2c92a32fd612e6c3b51832d5c1c3678e > Gitweb: https://git.kernel.org/tip/4f2d1bbc2c92a32fd612e6c3b51832d5c1c3678e > Author: Ard Biesheuvel <ardb@kernel.org> > AuthorDate: Tue, 01 Apr 2025 15:34:20 +02:00 > Committer: Ingo Molnar <mingo@kernel.org> > CommitterDate: Sun, 06 Apr 2025 20:15:14 +02:00 > > x86/boot: Move the EFI mixed mode startup code back under arch/x86, into startup/ > > Linus expressed a strong preference for arch-specific asm code (i.e., > virtually all of it) to reside under arch/ rather than anywhere else. > > So move the EFI mixed mode startup code back, and put it under > arch/x86/boot/startup/ where all shared x86 startup code is going to > live. > > Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> > Signed-off-by: Ard Biesheuvel <ardb@kernel.org> > Signed-off-by: Ingo Molnar <mingo@kernel.org> > Cc: David Woodhouse <dwmw@amazon.co.uk> > Cc: H. Peter Anvin <hpa@zytor.com> > Cc: Kees Cook <keescook@chromium.org> > Link: https://lore.kernel.org/r/20250401133416.1436741-11-ardb+git@google.com > --- > arch/x86/boot/startup/Makefile | 3 +- > arch/x86/boot/startup/efi-mixed.S | 253 ++++++++++++++++++++++- > drivers/firmware/efi/libstub/Makefile | 1 +- > drivers/firmware/efi/libstub/x86-mixed.S | 253 +---------------------- > 4 files changed, 256 insertions(+), 254 deletions(-) > create mode 100644 arch/x86/boot/startup/efi-mixed.S > delete mode 100644 drivers/firmware/efi/libstub/x86-mixed.S > > diff --git a/arch/x86/boot/startup/Makefile b/arch/x86/boot/startup/Makefile > index 03519ef..73946a3 100644 > --- a/arch/x86/boot/startup/Makefile > +++ b/arch/x86/boot/startup/Makefile > @@ -1,3 +1,6 @@ > # SPDX-License-Identifier: GPL-2.0 > > +KBUILD_AFLAGS += -D__DISABLE_EXPORTS > + > lib-$(CONFIG_X86_64) += la57toggle.o > +lib-$(CONFIG_EFI_MIXED) += efi-mixed.o > diff --git a/arch/x86/boot/startup/efi-mixed.S b/arch/x86/boot/startup/efi-mixed.S > new file mode 100644 > index 0000000..e04ed99 > --- /dev/null > +++ b/arch/x86/boot/startup/efi-mixed.S > @@ -0,0 +1,253 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +/* > + * Copyright (C) 2014, 2015 Intel Corporation; author Matt Fleming > + * > + * Early support for invoking 32-bit EFI services from a 64-bit kernel. > + * > + * Because this thunking occurs before ExitBootServices() we have to > + * restore the firmware's 32-bit GDT and IDT before we make EFI service > + * calls. > + * > + * On the plus side, we don't have to worry about mangling 64-bit > + * addresses into 32-bits because we're executing with an identity > + * mapped pagetable and haven't transitioned to 64-bit virtual addresses > + * yet. > + */ > + > +#include <linux/linkage.h> > +#include <asm/desc_defs.h> > +#include <asm/msr.h> > +#include <asm/page_types.h> > +#include <asm/pgtable_types.h> > +#include <asm/processor-flags.h> > +#include <asm/segment.h> > + > + .text > + .code32 > +#ifdef CONFIG_EFI_HANDOVER_PROTOCOL > +SYM_FUNC_START(efi32_stub_entry) > + call 1f > +1: popl %ecx > + > + /* Clear BSS */ > + xorl %eax, %eax > + leal (_bss - 1b)(%ecx), %edi > + leal (_ebss - 1b)(%ecx), %ecx > + subl %edi, %ecx > + shrl $2, %ecx > + cld > + rep stosl > + > + add $0x4, %esp /* Discard return address */ > + movl 8(%esp), %ebx /* struct boot_params pointer */ > + jmp efi32_startup > +SYM_FUNC_END(efi32_stub_entry) > +#endif > + > +/* > + * Called using a far call from __efi64_thunk() below, using the x86_64 SysV > + * ABI (except for R8/R9 which are inaccessible to 32-bit code - EAX/EBX are > + * used instead). EBP+16 points to the arguments passed via the stack. > + * > + * The first argument (EDI) is a pointer to the boot service or protocol, to > + * which the remaining arguments are passed, each truncated to 32 bits. > + */ > +SYM_FUNC_START_LOCAL(efi_enter32) > + /* > + * Convert x86-64 SysV ABI params to i386 ABI > + */ > + pushl 32(%ebp) /* Up to 3 args passed via the stack */ > + pushl 24(%ebp) > + pushl 16(%ebp) > + pushl %ebx /* R9 */ > + pushl %eax /* R8 */ > + pushl %ecx > + pushl %edx > + pushl %esi > + > + /* Disable paging */ > + movl %cr0, %eax > + btrl $X86_CR0_PG_BIT, %eax > + movl %eax, %cr0 > + > + /* Disable long mode via EFER */ > + movl $MSR_EFER, %ecx > + rdmsr > + btrl $_EFER_LME, %eax > + wrmsr > + > + call *%edi > + > + /* We must preserve return value */ > + movl %eax, %edi > + > + call efi32_enable_long_mode > + > + addl $32, %esp > + movl %edi, %eax > + lret > +SYM_FUNC_END(efi_enter32) > + > + .code64 > +SYM_FUNC_START(__efi64_thunk) > + push %rbp > + movl %esp, %ebp > + push %rbx > + > + /* Move args #5 and #6 into 32-bit accessible registers */ > + movl %r8d, %eax > + movl %r9d, %ebx > + > + lcalll *efi32_call(%rip) > + > + pop %rbx > + pop %rbp > + RET > +SYM_FUNC_END(__efi64_thunk) > + > + .code32 > +SYM_FUNC_START_LOCAL(efi32_enable_long_mode) > + movl %cr4, %eax > + btsl $(X86_CR4_PAE_BIT), %eax > + movl %eax, %cr4 > + > + movl $MSR_EFER, %ecx > + rdmsr > + btsl $_EFER_LME, %eax > + wrmsr > + > + /* Disable interrupts - the firmware's IDT does not work in long mode */ > + cli > + > + /* Enable paging */ > + movl %cr0, %eax > + btsl $X86_CR0_PG_BIT, %eax > + movl %eax, %cr0 > + ret > +SYM_FUNC_END(efi32_enable_long_mode) > + > +/* > + * This is the common EFI stub entry point for mixed mode. It sets up the GDT > + * and page tables needed for 64-bit execution, after which it calls the > + * common 64-bit EFI entrypoint efi_stub_entry(). > + * > + * Arguments: 0(%esp) image handle > + * 4(%esp) EFI system table pointer > + * %ebx struct boot_params pointer (or NULL) > + * > + * Since this is the point of no return for ordinary execution, no registers > + * are considered live except for the function parameters. [Note that the EFI > + * stub may still exit and return to the firmware using the Exit() EFI boot > + * service.] > + */ > +SYM_FUNC_START_LOCAL(efi32_startup) > + movl %esp, %ebp > + > + subl $8, %esp > + sgdtl (%esp) /* Save GDT descriptor to the stack */ > + movl 2(%esp), %esi /* Existing GDT pointer */ > + movzwl (%esp), %ecx /* Existing GDT limit */ > + inc %ecx /* Existing GDT size */ > + andl $~7, %ecx /* Ensure size is multiple of 8 */ > + > + subl %ecx, %esp /* Allocate new GDT */ > + andl $~15, %esp /* Realign the stack */ > + movl %esp, %edi /* New GDT address */ > + leal 7(%ecx), %eax /* New GDT limit */ > + pushw %cx /* Push 64-bit CS (for LJMP below) */ > + pushl %edi /* Push new GDT address */ > + pushw %ax /* Push new GDT limit */ > + > + /* Copy GDT to the stack and add a 64-bit code segment at the end */ > + movl $GDT_ENTRY(DESC_CODE64, 0, 0xfffff) & 0xffffffff, (%edi,%ecx) > + movl $GDT_ENTRY(DESC_CODE64, 0, 0xfffff) >> 32, 4(%edi,%ecx) > + shrl $2, %ecx > + cld > + rep movsl /* Copy the firmware GDT */ > + lgdtl (%esp) /* Switch to the new GDT */ > + > + call 1f > +1: pop %edi > + > + /* Record mixed mode entry */ > + movb $0x0, (efi_is64 - 1b)(%edi) > + > + /* Set up indirect far call to re-enter 32-bit mode */ > + leal (efi32_call - 1b)(%edi), %eax > + addl %eax, (%eax) > + movw %cs, 4(%eax) > + > + /* Disable paging */ > + movl %cr0, %eax > + btrl $X86_CR0_PG_BIT, %eax > + movl %eax, %cr0 > + > + /* Set up 1:1 mapping */ > + leal (pte - 1b)(%edi), %eax > + movl $_PAGE_PRESENT | _PAGE_RW | _PAGE_PSE, %ecx > + leal (_PAGE_PRESENT | _PAGE_RW)(%eax), %edx > +2: movl %ecx, (%eax) > + addl $8, %eax > + addl $PMD_SIZE, %ecx > + jnc 2b > + > + movl $PAGE_SIZE, %ecx > + .irpc l, 0123 > + movl %edx, \l * 8(%eax) > + addl %ecx, %edx > + .endr > + addl %ecx, %eax > + movl %edx, (%eax) > + movl %eax, %cr3 > + > + call efi32_enable_long_mode > + > + /* Set up far jump to 64-bit mode (CS is already on the stack) */ > + leal (efi_stub_entry - 1b)(%edi), %eax > + movl %eax, 2(%esp) > + > + movl 0(%ebp), %edi > + movl 4(%ebp), %esi > + movl %ebx, %edx > + ljmpl *2(%esp) > +SYM_FUNC_END(efi32_startup) > + > +/* > + * efi_status_t efi32_pe_entry(efi_handle_t image_handle, > + * efi_system_table_32_t *sys_table) > + */ > +SYM_FUNC_START(efi32_pe_entry) > + pushl %ebx // save callee-save registers > + > + /* Check whether the CPU supports long mode */ > + movl $0x80000001, %eax // assume extended info support > + cpuid > + btl $29, %edx // check long mode bit > + jnc 1f > + leal 8(%esp), %esp // preserve stack alignment > + xor %ebx, %ebx // no struct boot_params pointer > + jmp efi32_startup // only ESP and EBX remain live > +1: movl $0x80000003, %eax // EFI_UNSUPPORTED > + popl %ebx > + RET > +SYM_FUNC_END(efi32_pe_entry) > + > +#ifdef CONFIG_EFI_HANDOVER_PROTOCOL > + .org efi32_stub_entry + 0x200 > + .code64 > +SYM_FUNC_START_NOALIGN(efi64_stub_entry) > + jmp efi_handover_entry > +SYM_FUNC_END(efi64_stub_entry) > +#endif > + > + .data > + .balign 8 > +SYM_DATA_START_LOCAL(efi32_call) > + .long efi_enter32 - . > + .word 0x0 > +SYM_DATA_END(efi32_call) > +SYM_DATA(efi_is64, .byte 1) > + > + .bss > + .balign PAGE_SIZE > +SYM_DATA_LOCAL(pte, .fill 6 * PAGE_SIZE, 1, 0) > diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile > index d23a1b9..2f17339 100644 > --- a/drivers/firmware/efi/libstub/Makefile > +++ b/drivers/firmware/efi/libstub/Makefile > @@ -85,7 +85,6 @@ lib-$(CONFIG_EFI_GENERIC_STUB) += efi-stub.o string.o intrinsics.o systable.o \ > lib-$(CONFIG_ARM) += arm32-stub.o > lib-$(CONFIG_ARM64) += kaslr.o arm64.o arm64-stub.o smbios.o > lib-$(CONFIG_X86) += x86-stub.o smbios.o > -lib-$(CONFIG_EFI_MIXED) += x86-mixed.o > lib-$(CONFIG_X86_64) += x86-5lvl.o > lib-$(CONFIG_RISCV) += kaslr.o riscv.o riscv-stub.o > lib-$(CONFIG_LOONGARCH) += loongarch.o loongarch-stub.o > diff --git a/drivers/firmware/efi/libstub/x86-mixed.S b/drivers/firmware/efi/libstub/x86-mixed.S > deleted file mode 100644 > index e04ed99..0000000 > --- a/drivers/firmware/efi/libstub/x86-mixed.S > +++ /dev/null > @@ -1,253 +0,0 @@ > -/* SPDX-License-Identifier: GPL-2.0 */ > -/* > - * Copyright (C) 2014, 2015 Intel Corporation; author Matt Fleming > - * > - * Early support for invoking 32-bit EFI services from a 64-bit kernel. > - * > - * Because this thunking occurs before ExitBootServices() we have to > - * restore the firmware's 32-bit GDT and IDT before we make EFI service > - * calls. > - * > - * On the plus side, we don't have to worry about mangling 64-bit > - * addresses into 32-bits because we're executing with an identity > - * mapped pagetable and haven't transitioned to 64-bit virtual addresses > - * yet. > - */ > - > -#include <linux/linkage.h> > -#include <asm/desc_defs.h> > -#include <asm/msr.h> > -#include <asm/page_types.h> > -#include <asm/pgtable_types.h> > -#include <asm/processor-flags.h> > -#include <asm/segment.h> > - > - .text > - .code32 > -#ifdef CONFIG_EFI_HANDOVER_PROTOCOL > -SYM_FUNC_START(efi32_stub_entry) > - call 1f > -1: popl %ecx > - > - /* Clear BSS */ > - xorl %eax, %eax > - leal (_bss - 1b)(%ecx), %edi > - leal (_ebss - 1b)(%ecx), %ecx > - subl %edi, %ecx > - shrl $2, %ecx > - cld > - rep stosl > - > - add $0x4, %esp /* Discard return address */ > - movl 8(%esp), %ebx /* struct boot_params pointer */ > - jmp efi32_startup > -SYM_FUNC_END(efi32_stub_entry) > -#endif > - > -/* > - * Called using a far call from __efi64_thunk() below, using the x86_64 SysV > - * ABI (except for R8/R9 which are inaccessible to 32-bit code - EAX/EBX are > - * used instead). EBP+16 points to the arguments passed via the stack. > - * > - * The first argument (EDI) is a pointer to the boot service or protocol, to > - * which the remaining arguments are passed, each truncated to 32 bits. > - */ > -SYM_FUNC_START_LOCAL(efi_enter32) > - /* > - * Convert x86-64 SysV ABI params to i386 ABI > - */ > - pushl 32(%ebp) /* Up to 3 args passed via the stack */ > - pushl 24(%ebp) > - pushl 16(%ebp) > - pushl %ebx /* R9 */ > - pushl %eax /* R8 */ > - pushl %ecx > - pushl %edx > - pushl %esi > - > - /* Disable paging */ > - movl %cr0, %eax > - btrl $X86_CR0_PG_BIT, %eax > - movl %eax, %cr0 > - > - /* Disable long mode via EFER */ > - movl $MSR_EFER, %ecx > - rdmsr > - btrl $_EFER_LME, %eax > - wrmsr > - > - call *%edi > - > - /* We must preserve return value */ > - movl %eax, %edi > - > - call efi32_enable_long_mode > - > - addl $32, %esp > - movl %edi, %eax > - lret > -SYM_FUNC_END(efi_enter32) > - > - .code64 > -SYM_FUNC_START(__efi64_thunk) > - push %rbp > - movl %esp, %ebp > - push %rbx > - > - /* Move args #5 and #6 into 32-bit accessible registers */ > - movl %r8d, %eax > - movl %r9d, %ebx > - > - lcalll *efi32_call(%rip) > - > - pop %rbx > - pop %rbp > - RET > -SYM_FUNC_END(__efi64_thunk) > - > - .code32 > -SYM_FUNC_START_LOCAL(efi32_enable_long_mode) > - movl %cr4, %eax > - btsl $(X86_CR4_PAE_BIT), %eax > - movl %eax, %cr4 > - > - movl $MSR_EFER, %ecx > - rdmsr > - btsl $_EFER_LME, %eax > - wrmsr > - > - /* Disable interrupts - the firmware's IDT does not work in long mode */ > - cli > - > - /* Enable paging */ > - movl %cr0, %eax > - btsl $X86_CR0_PG_BIT, %eax > - movl %eax, %cr0 > - ret > -SYM_FUNC_END(efi32_enable_long_mode) > - > -/* > - * This is the common EFI stub entry point for mixed mode. It sets up the GDT > - * and page tables needed for 64-bit execution, after which it calls the > - * common 64-bit EFI entrypoint efi_stub_entry(). > - * > - * Arguments: 0(%esp) image handle > - * 4(%esp) EFI system table pointer > - * %ebx struct boot_params pointer (or NULL) > - * > - * Since this is the point of no return for ordinary execution, no registers > - * are considered live except for the function parameters. [Note that the EFI > - * stub may still exit and return to the firmware using the Exit() EFI boot > - * service.] > - */ > -SYM_FUNC_START_LOCAL(efi32_startup) > - movl %esp, %ebp > - > - subl $8, %esp > - sgdtl (%esp) /* Save GDT descriptor to the stack */ > - movl 2(%esp), %esi /* Existing GDT pointer */ > - movzwl (%esp), %ecx /* Existing GDT limit */ > - inc %ecx /* Existing GDT size */ > - andl $~7, %ecx /* Ensure size is multiple of 8 */ > - > - subl %ecx, %esp /* Allocate new GDT */ > - andl $~15, %esp /* Realign the stack */ > - movl %esp, %edi /* New GDT address */ > - leal 7(%ecx), %eax /* New GDT limit */ > - pushw %cx /* Push 64-bit CS (for LJMP below) */ > - pushl %edi /* Push new GDT address */ > - pushw %ax /* Push new GDT limit */ > - > - /* Copy GDT to the stack and add a 64-bit code segment at the end */ > - movl $GDT_ENTRY(DESC_CODE64, 0, 0xfffff) & 0xffffffff, (%edi,%ecx) > - movl $GDT_ENTRY(DESC_CODE64, 0, 0xfffff) >> 32, 4(%edi,%ecx) > - shrl $2, %ecx > - cld > - rep movsl /* Copy the firmware GDT */ > - lgdtl (%esp) /* Switch to the new GDT */ > - > - call 1f > -1: pop %edi > - > - /* Record mixed mode entry */ > - movb $0x0, (efi_is64 - 1b)(%edi) > - > - /* Set up indirect far call to re-enter 32-bit mode */ > - leal (efi32_call - 1b)(%edi), %eax > - addl %eax, (%eax) > - movw %cs, 4(%eax) > - > - /* Disable paging */ > - movl %cr0, %eax > - btrl $X86_CR0_PG_BIT, %eax > - movl %eax, %cr0 > - > - /* Set up 1:1 mapping */ > - leal (pte - 1b)(%edi), %eax > - movl $_PAGE_PRESENT | _PAGE_RW | _PAGE_PSE, %ecx > - leal (_PAGE_PRESENT | _PAGE_RW)(%eax), %edx > -2: movl %ecx, (%eax) > - addl $8, %eax > - addl $PMD_SIZE, %ecx > - jnc 2b > - > - movl $PAGE_SIZE, %ecx > - .irpc l, 0123 > - movl %edx, \l * 8(%eax) > - addl %ecx, %edx > - .endr > - addl %ecx, %eax > - movl %edx, (%eax) > - movl %eax, %cr3 > - > - call efi32_enable_long_mode > - > - /* Set up far jump to 64-bit mode (CS is already on the stack) */ > - leal (efi_stub_entry - 1b)(%edi), %eax > - movl %eax, 2(%esp) > - > - movl 0(%ebp), %edi > - movl 4(%ebp), %esi > - movl %ebx, %edx > - ljmpl *2(%esp) > -SYM_FUNC_END(efi32_startup) > - > -/* > - * efi_status_t efi32_pe_entry(efi_handle_t image_handle, > - * efi_system_table_32_t *sys_table) > - */ > -SYM_FUNC_START(efi32_pe_entry) > - pushl %ebx // save callee-save registers > - > - /* Check whether the CPU supports long mode */ > - movl $0x80000001, %eax // assume extended info support > - cpuid > - btl $29, %edx // check long mode bit > - jnc 1f > - leal 8(%esp), %esp // preserve stack alignment > - xor %ebx, %ebx // no struct boot_params pointer > - jmp efi32_startup // only ESP and EBX remain live > -1: movl $0x80000003, %eax // EFI_UNSUPPORTED > - popl %ebx > - RET > -SYM_FUNC_END(efi32_pe_entry) > - > -#ifdef CONFIG_EFI_HANDOVER_PROTOCOL > - .org efi32_stub_entry + 0x200 > - .code64 > -SYM_FUNC_START_NOALIGN(efi64_stub_entry) > - jmp efi_handover_entry > -SYM_FUNC_END(efi64_stub_entry) > -#endif > - > - .data > - .balign 8 > -SYM_DATA_START_LOCAL(efi32_call) > - .long efi_enter32 - . > - .word 0x0 > -SYM_DATA_END(efi32_call) > -SYM_DATA(efi_is64, .byte 1) > - > - .bss > - .balign PAGE_SIZE > -SYM_DATA_LOCAL(pte, .fill 6 * PAGE_SIZE, 1, 0) [-- Attachment #2: kernel_config --] [-- Type: text/plain, Size: 154389 bytes --] # # Automatically generated file; DO NOT EDIT. # Linux/x86 6.15.0-rc1 Kernel Configuration # CONFIG_CC_VERSION_TEXT="gcc (GCC) 11.5.0 20240719 (Red Hat 11.5.0-5)" CONFIG_CC_IS_GCC=y CONFIG_GCC_VERSION=110500 CONFIG_CLANG_VERSION=0 CONFIG_AS_IS_GNU=y CONFIG_AS_VERSION=23502 CONFIG_LD_IS_BFD=y CONFIG_LD_VERSION=23502 CONFIG_LLD_VERSION=0 CONFIG_RUSTC_VERSION=0 CONFIG_RUSTC_LLVM_VERSION=0 CONFIG_CC_CAN_LINK=y CONFIG_CC_CAN_LINK_STATIC=y CONFIG_CC_HAS_ASM_GOTO_OUTPUT=y CONFIG_CC_HAS_ASM_GOTO_TIED_OUTPUT=y CONFIG_CC_HAS_ASM_INLINE=y CONFIG_CC_HAS_NO_PROFILE_FN_ATTR=y CONFIG_LD_CAN_USE_KEEP_IN_OVERLAY=y CONFIG_PAHOLE_VERSION=127 CONFIG_IRQ_WORK=y CONFIG_BUILDTIME_TABLE_SORT=y CONFIG_THREAD_INFO_IN_TASK=y # # General setup # CONFIG_INIT_ENV_ARG_LIMIT=32 # CONFIG_COMPILE_TEST is not set CONFIG_WERROR=y CONFIG_LOCALVERSION="" # CONFIG_LOCALVERSION_AUTO is not set CONFIG_BUILD_SALT="" CONFIG_HAVE_KERNEL_GZIP=y CONFIG_HAVE_KERNEL_BZIP2=y CONFIG_HAVE_KERNEL_LZMA=y CONFIG_HAVE_KERNEL_XZ=y CONFIG_HAVE_KERNEL_LZO=y CONFIG_HAVE_KERNEL_LZ4=y CONFIG_HAVE_KERNEL_ZSTD=y CONFIG_KERNEL_GZIP=y # CONFIG_KERNEL_BZIP2 is not set # CONFIG_KERNEL_LZMA is not set # CONFIG_KERNEL_XZ is not set # CONFIG_KERNEL_LZO is not set # CONFIG_KERNEL_LZ4 is not set # CONFIG_KERNEL_ZSTD is not set CONFIG_DEFAULT_INIT="" CONFIG_DEFAULT_HOSTNAME="(none)" CONFIG_SYSVIPC=y CONFIG_SYSVIPC_SYSCTL=y CONFIG_SYSVIPC_COMPAT=y CONFIG_POSIX_MQUEUE=y CONFIG_POSIX_MQUEUE_SYSCTL=y # CONFIG_WATCH_QUEUE is not set CONFIG_CROSS_MEMORY_ATTACH=y # CONFIG_USELIB is not set CONFIG_AUDIT=y CONFIG_HAVE_ARCH_AUDITSYSCALL=y CONFIG_AUDITSYSCALL=y # # IRQ subsystem # CONFIG_GENERIC_IRQ_PROBE=y CONFIG_GENERIC_IRQ_SHOW=y CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y CONFIG_GENERIC_PENDING_IRQ=y CONFIG_GENERIC_IRQ_MIGRATION=y CONFIG_HARDIRQS_SW_RESEND=y CONFIG_IRQ_DOMAIN=y CONFIG_IRQ_DOMAIN_HIERARCHY=y CONFIG_GENERIC_MSI_IRQ=y CONFIG_GENERIC_IRQ_MATRIX_ALLOCATOR=y CONFIG_GENERIC_IRQ_RESERVATION_MODE=y CONFIG_IRQ_FORCED_THREADING=y CONFIG_SPARSE_IRQ=y # CONFIG_GENERIC_IRQ_DEBUGFS is not set # end of IRQ subsystem CONFIG_CLOCKSOURCE_WATCHDOG=y CONFIG_ARCH_CLOCKSOURCE_INIT=y CONFIG_GENERIC_TIME_VSYSCALL=y CONFIG_GENERIC_CLOCKEVENTS=y CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y CONFIG_GENERIC_CLOCKEVENTS_BROADCAST_IDLE=y CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=y CONFIG_GENERIC_CMOS_UPDATE=y CONFIG_HAVE_POSIX_CPU_TIMERS_TASK_WORK=y CONFIG_POSIX_CPU_TIMERS_TASK_WORK=y CONFIG_CONTEXT_TRACKING=y CONFIG_CONTEXT_TRACKING_IDLE=y # # Timers subsystem # CONFIG_TICK_ONESHOT=y CONFIG_NO_HZ_COMMON=y # CONFIG_HZ_PERIODIC is not set CONFIG_NO_HZ_IDLE=y # CONFIG_NO_HZ_FULL is not set CONFIG_NO_HZ=y CONFIG_HIGH_RES_TIMERS=y CONFIG_CLOCKSOURCE_WATCHDOG_MAX_SKEW_US=100 # end of Timers subsystem CONFIG_BPF=y CONFIG_HAVE_EBPF_JIT=y CONFIG_ARCH_WANT_DEFAULT_BPF_JIT=y # # BPF subsystem # # CONFIG_BPF_SYSCALL is not set # CONFIG_BPF_JIT is not set # end of BPF subsystem CONFIG_PREEMPT_BUILD=y CONFIG_ARCH_HAS_PREEMPT_LAZY=y # CONFIG_PREEMPT_NONE is not set CONFIG_PREEMPT_VOLUNTARY=y # CONFIG_PREEMPT is not set # CONFIG_PREEMPT_LAZY is not set # CONFIG_PREEMPT_RT is not set CONFIG_PREEMPT_COUNT=y CONFIG_PREEMPTION=y CONFIG_PREEMPT_DYNAMIC=y # CONFIG_SCHED_CORE is not set # # CPU/Task time and stats accounting # CONFIG_TICK_CPU_ACCOUNTING=y # CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set # CONFIG_IRQ_TIME_ACCOUNTING is not set CONFIG_BSD_PROCESS_ACCT=y # CONFIG_BSD_PROCESS_ACCT_V3 is not set CONFIG_TASKSTATS=y CONFIG_TASK_DELAY_ACCT=y CONFIG_TASK_XACCT=y CONFIG_TASK_IO_ACCOUNTING=y # CONFIG_PSI is not set # end of CPU/Task time and stats accounting CONFIG_CPU_ISOLATION=y # # RCU Subsystem # CONFIG_TREE_RCU=y CONFIG_PREEMPT_RCU=y # CONFIG_RCU_EXPERT is not set CONFIG_TREE_SRCU=y CONFIG_TASKS_RCU_GENERIC=y CONFIG_NEED_TASKS_RCU=y CONFIG_TASKS_RCU=y CONFIG_TASKS_TRACE_RCU=y CONFIG_RCU_STALL_COMMON=y CONFIG_RCU_NEED_SEGCBLIST=y # end of RCU Subsystem # CONFIG_IKCONFIG is not set # CONFIG_IKHEADERS is not set CONFIG_LOG_BUF_SHIFT=18 CONFIG_LOG_CPU_MAX_BUF_SHIFT=12 # CONFIG_PRINTK_INDEX is not set CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y # # Scheduler features # # CONFIG_UCLAMP_TASK is not set # end of Scheduler features CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH=y CONFIG_CC_HAS_INT128=y CONFIG_CC_IMPLICIT_FALLTHROUGH="-Wimplicit-fallthrough=5" CONFIG_GCC10_NO_ARRAY_BOUNDS=y CONFIG_CC_NO_ARRAY_BOUNDS=y CONFIG_GCC_NO_STRINGOP_OVERFLOW=y CONFIG_CC_NO_STRINGOP_OVERFLOW=y CONFIG_ARCH_SUPPORTS_INT128=y # CONFIG_NUMA_BALANCING is not set CONFIG_CGROUPS=y CONFIG_PAGE_COUNTER=y # CONFIG_CGROUP_FAVOR_DYNMODS is not set # CONFIG_MEMCG is not set CONFIG_BLK_CGROUP=y CONFIG_CGROUP_SCHED=y CONFIG_GROUP_SCHED_WEIGHT=y CONFIG_FAIR_GROUP_SCHED=y # CONFIG_CFS_BANDWIDTH is not set # CONFIG_RT_GROUP_SCHED is not set CONFIG_SCHED_MM_CID=y CONFIG_CGROUP_PIDS=y CONFIG_CGROUP_RDMA=y # CONFIG_CGROUP_DMEM is not set CONFIG_CGROUP_FREEZER=y CONFIG_CGROUP_HUGETLB=y CONFIG_CPUSETS=y # CONFIG_CPUSETS_V1 is not set CONFIG_CGROUP_DEVICE=y CONFIG_CGROUP_CPUACCT=y CONFIG_CGROUP_PERF=y CONFIG_CGROUP_MISC=y CONFIG_CGROUP_DEBUG=y CONFIG_SOCK_CGROUP_DATA=y CONFIG_NAMESPACES=y CONFIG_UTS_NS=y CONFIG_TIME_NS=y CONFIG_IPC_NS=y # CONFIG_USER_NS is not set CONFIG_PID_NS=y CONFIG_NET_NS=y # CONFIG_CHECKPOINT_RESTORE is not set # CONFIG_SCHED_AUTOGROUP is not set CONFIG_RELAY=y CONFIG_BLK_DEV_INITRD=y CONFIG_INITRAMFS_SOURCE="" CONFIG_RD_GZIP=y CONFIG_RD_BZIP2=y CONFIG_RD_LZMA=y CONFIG_RD_XZ=y CONFIG_RD_LZO=y CONFIG_RD_LZ4=y CONFIG_RD_ZSTD=y # CONFIG_BOOT_CONFIG is not set CONFIG_INITRAMFS_PRESERVE_MTIME=y CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set CONFIG_LD_ORPHAN_WARN=y CONFIG_LD_ORPHAN_WARN_LEVEL="error" CONFIG_SYSCTL=y CONFIG_HAVE_UID16=y CONFIG_SYSCTL_EXCEPTION_TRACE=y CONFIG_HAVE_PCSPKR_PLATFORM=y CONFIG_EXPERT=y CONFIG_UID16=y CONFIG_MULTIUSER=y CONFIG_SGETMASK_SYSCALL=y CONFIG_SYSFS_SYSCALL=y CONFIG_FHANDLE=y CONFIG_POSIX_TIMERS=y CONFIG_PRINTK=y CONFIG_BUG=y CONFIG_ELF_CORE=y CONFIG_PCSPKR_PLATFORM=y # CONFIG_BASE_SMALL is not set CONFIG_FUTEX=y CONFIG_FUTEX_PI=y CONFIG_EPOLL=y CONFIG_SIGNALFD=y CONFIG_TIMERFD=y CONFIG_EVENTFD=y CONFIG_SHMEM=y CONFIG_AIO=y CONFIG_IO_URING=y CONFIG_ADVISE_SYSCALLS=y CONFIG_MEMBARRIER=y CONFIG_KCMP=y CONFIG_RSEQ=y # CONFIG_DEBUG_RSEQ is not set CONFIG_CACHESTAT_SYSCALL=y # CONFIG_PC104 is not set CONFIG_KALLSYMS=y # CONFIG_KALLSYMS_SELFTEST is not set CONFIG_KALLSYMS_ALL=y CONFIG_ARCH_HAS_MEMBARRIER_SYNC_CORE=y CONFIG_ARCH_SUPPORTS_MSEAL_SYSTEM_MAPPINGS=y CONFIG_HAVE_PERF_EVENTS=y CONFIG_GUEST_PERF_EVENTS=y # # Kernel Performance Events And Counters # CONFIG_PERF_EVENTS=y # CONFIG_DEBUG_PERF_USE_VMALLOC is not set # end of Kernel Performance Events And Counters CONFIG_SYSTEM_DATA_VERIFICATION=y CONFIG_PROFILING=y CONFIG_TRACEPOINTS=y # # Kexec and crash features # CONFIG_CRASH_RESERVE=y CONFIG_VMCORE_INFO=y CONFIG_KEXEC_CORE=y CONFIG_KEXEC=y # CONFIG_KEXEC_FILE is not set # CONFIG_KEXEC_JUMP is not set CONFIG_CRASH_DUMP=y CONFIG_CRASH_HOTPLUG=y CONFIG_CRASH_MAX_MEMORY_RANGES=8192 # end of Kexec and crash features # end of General setup CONFIG_64BIT=y CONFIG_X86_64=y CONFIG_X86=y CONFIG_INSTRUCTION_DECODER=y CONFIG_OUTPUT_FORMAT="elf64-x86-64" CONFIG_LOCKDEP_SUPPORT=y CONFIG_STACKTRACE_SUPPORT=y CONFIG_MMU=y CONFIG_ARCH_MMAP_RND_BITS_MIN=28 CONFIG_ARCH_MMAP_RND_BITS_MAX=32 CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=8 CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=16 CONFIG_GENERIC_ISA_DMA=y CONFIG_GENERIC_BUG=y CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y CONFIG_ARCH_MAY_HAVE_PC_FDC=y CONFIG_GENERIC_CALIBRATE_DELAY=y CONFIG_ARCH_HAS_CPU_RELAX=y CONFIG_ARCH_HIBERNATION_POSSIBLE=y CONFIG_ARCH_SUSPEND_POSSIBLE=y CONFIG_AUDIT_ARCH=y CONFIG_HAVE_INTEL_TXT=y CONFIG_X86_64_SMP=y CONFIG_ARCH_SUPPORTS_UPROBES=y CONFIG_FIX_EARLYCON_MEM=y CONFIG_DYNAMIC_PHYSICAL_MASK=y CONFIG_PGTABLE_LEVELS=5 # # Processor type and features # CONFIG_SMP=y CONFIG_X86_X2APIC=y CONFIG_X86_MPPARSE=y # CONFIG_X86_CPU_RESCTRL is not set # CONFIG_X86_FRED is not set CONFIG_X86_EXTENDED_PLATFORM=y # CONFIG_X86_NUMACHIP is not set # CONFIG_X86_VSMP is not set # CONFIG_X86_UV is not set # CONFIG_X86_INTEL_MID is not set # CONFIG_X86_GOLDFISH is not set # CONFIG_X86_INTEL_LPSS is not set # CONFIG_X86_AMD_PLATFORM_DEVICE is not set CONFIG_IOSF_MBI=y # CONFIG_IOSF_MBI_DEBUG is not set CONFIG_X86_SUPPORTS_MEMORY_FAILURE=y CONFIG_SCHED_OMIT_FRAME_POINTER=y CONFIG_HYPERVISOR_GUEST=y CONFIG_PARAVIRT=y # CONFIG_PARAVIRT_DEBUG is not set # CONFIG_PARAVIRT_SPINLOCKS is not set CONFIG_X86_HV_CALLBACK_VECTOR=y # CONFIG_XEN is not set CONFIG_KVM_GUEST=y CONFIG_ARCH_CPUIDLE_HALTPOLL=y # CONFIG_PVH is not set # CONFIG_PARAVIRT_TIME_ACCOUNTING is not set CONFIG_PARAVIRT_CLOCK=y # CONFIG_JAILHOUSE_GUEST is not set # CONFIG_ACRN_GUEST is not set # CONFIG_INTEL_TDX_GUEST is not set CONFIG_CC_HAS_MARCH_NATIVE=y # CONFIG_X86_NATIVE_CPU is not set CONFIG_X86_INTERNODE_CACHE_SHIFT=6 CONFIG_X86_L1_CACHE_SHIFT=6 CONFIG_X86_TSC=y CONFIG_X86_HAVE_PAE=y CONFIG_X86_CX8=y CONFIG_X86_CMOV=y CONFIG_X86_MINIMUM_CPU_FAMILY=64 CONFIG_X86_DEBUGCTLMSR=y CONFIG_IA32_FEAT_CTL=y CONFIG_X86_VMX_FEATURE_NAMES=y # CONFIG_PROCESSOR_SELECT is not set CONFIG_BROADCAST_TLB_FLUSH=y CONFIG_CPU_SUP_INTEL=y CONFIG_CPU_SUP_AMD=y CONFIG_CPU_SUP_HYGON=y CONFIG_CPU_SUP_CENTAUR=y CONFIG_CPU_SUP_ZHAOXIN=y CONFIG_HPET_TIMER=y CONFIG_HPET_EMULATE_RTC=y CONFIG_DMI=y # CONFIG_GART_IOMMU is not set # CONFIG_MAXSMP is not set CONFIG_NR_CPUS_RANGE_BEGIN=2 CONFIG_NR_CPUS_RANGE_END=512 CONFIG_NR_CPUS_DEFAULT=64 CONFIG_NR_CPUS=512 CONFIG_SCHED_CLUSTER=y CONFIG_SCHED_SMT=y CONFIG_SCHED_MC=y CONFIG_SCHED_MC_PRIO=y CONFIG_X86_LOCAL_APIC=y CONFIG_ACPI_MADT_WAKEUP=y CONFIG_X86_IO_APIC=y CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS=y CONFIG_X86_MCE=y # CONFIG_X86_MCELOG_LEGACY is not set CONFIG_X86_MCE_INTEL=y CONFIG_X86_MCE_AMD=y CONFIG_X86_MCE_THRESHOLD=y # CONFIG_X86_MCE_INJECT is not set # # Performance monitoring # CONFIG_PERF_EVENTS_INTEL_UNCORE=y CONFIG_PERF_EVENTS_INTEL_RAPL=y CONFIG_PERF_EVENTS_INTEL_CSTATE=y # CONFIG_PERF_EVENTS_AMD_POWER is not set CONFIG_PERF_EVENTS_AMD_UNCORE=y # CONFIG_PERF_EVENTS_AMD_BRS is not set # end of Performance monitoring CONFIG_X86_16BIT=y CONFIG_X86_ESPFIX64=y CONFIG_X86_VSYSCALL_EMULATION=y CONFIG_X86_IOPL_IOPERM=y CONFIG_MICROCODE=y # CONFIG_MICROCODE_LATE_LOADING is not set CONFIG_X86_MSR=y CONFIG_X86_CPUID=y CONFIG_X86_5LEVEL=y CONFIG_X86_DIRECT_GBPAGES=y # CONFIG_X86_CPA_STATISTICS is not set CONFIG_X86_MEM_ENCRYPT=y CONFIG_AMD_MEM_ENCRYPT=y CONFIG_NUMA=y CONFIG_AMD_NUMA=y CONFIG_X86_64_ACPI_NUMA=y CONFIG_NODES_SHIFT=6 CONFIG_ARCH_SPARSEMEM_ENABLE=y CONFIG_ARCH_SPARSEMEM_DEFAULT=y CONFIG_ARCH_MEMORY_PROBE=y CONFIG_ARCH_PROC_KCORE_TEXT=y CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000 # CONFIG_X86_PMEM_LEGACY is not set CONFIG_X86_CHECK_BIOS_CORRUPTION=y CONFIG_X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK=y CONFIG_MTRR=y # CONFIG_MTRR_SANITIZER is not set CONFIG_X86_PAT=y CONFIG_X86_UMIP=y CONFIG_CC_HAS_IBT=y # CONFIG_X86_KERNEL_IBT is not set CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS=y CONFIG_ARCH_PKEY_BITS=4 CONFIG_X86_INTEL_TSX_MODE_OFF=y # CONFIG_X86_INTEL_TSX_MODE_ON is not set # CONFIG_X86_INTEL_TSX_MODE_AUTO is not set # CONFIG_X86_SGX is not set # CONFIG_X86_USER_SHADOW_STACK is not set CONFIG_EFI=y CONFIG_EFI_STUB=y CONFIG_EFI_HANDOVER_PROTOCOL=y CONFIG_EFI_MIXED=y CONFIG_EFI_RUNTIME_MAP=y # CONFIG_HZ_100 is not set # CONFIG_HZ_250 is not set # CONFIG_HZ_300 is not set CONFIG_HZ_1000=y CONFIG_HZ=1000 CONFIG_SCHED_HRTICK=y CONFIG_ARCH_SUPPORTS_KEXEC=y CONFIG_ARCH_SUPPORTS_KEXEC_FILE=y CONFIG_ARCH_SUPPORTS_KEXEC_PURGATORY=y CONFIG_ARCH_SUPPORTS_KEXEC_SIG=y CONFIG_ARCH_SUPPORTS_KEXEC_SIG_FORCE=y CONFIG_ARCH_SUPPORTS_KEXEC_BZIMAGE_VERIFY_SIG=y CONFIG_ARCH_SUPPORTS_KEXEC_JUMP=y CONFIG_ARCH_SUPPORTS_CRASH_DUMP=y CONFIG_ARCH_DEFAULT_CRASH_DUMP=y CONFIG_ARCH_SUPPORTS_CRASH_HOTPLUG=y CONFIG_ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION=y CONFIG_PHYSICAL_START=0x1000000 CONFIG_RELOCATABLE=y CONFIG_RANDOMIZE_BASE=y CONFIG_X86_NEED_RELOCS=y CONFIG_PHYSICAL_ALIGN=0x200000 CONFIG_DYNAMIC_MEMORY_LAYOUT=y CONFIG_RANDOMIZE_MEMORY=y CONFIG_RANDOMIZE_MEMORY_PHYSICAL_PADDING=0xa CONFIG_HOTPLUG_CPU=y # CONFIG_COMPAT_VDSO is not set CONFIG_LEGACY_VSYSCALL_XONLY=y # CONFIG_LEGACY_VSYSCALL_NONE is not set # CONFIG_CMDLINE_BOOL is not set CONFIG_MODIFY_LDT_SYSCALL=y # CONFIG_STRICT_SIGALTSTACK_SIZE is not set CONFIG_HAVE_LIVEPATCH=y CONFIG_X86_BUS_LOCK_DETECT=y # end of Processor type and features CONFIG_CC_HAS_NAMED_AS=y CONFIG_CC_HAS_NAMED_AS_FIXED_SANITIZERS=y CONFIG_USE_X86_SEG_SUPPORT=y CONFIG_CC_HAS_SLS=y CONFIG_CC_HAS_RETURN_THUNK=y CONFIG_CC_HAS_ENTRY_PADDING=y CONFIG_FUNCTION_PADDING_CFI=11 CONFIG_FUNCTION_PADDING_BYTES=16 CONFIG_CALL_PADDING=y CONFIG_HAVE_CALL_THUNKS=y CONFIG_CALL_THUNKS=y CONFIG_PREFIX_SYMBOLS=y CONFIG_CPU_MITIGATIONS=y CONFIG_MITIGATION_PAGE_TABLE_ISOLATION=y CONFIG_MITIGATION_RETPOLINE=y CONFIG_MITIGATION_RETHUNK=y CONFIG_MITIGATION_UNRET_ENTRY=y CONFIG_MITIGATION_CALL_DEPTH_TRACKING=y # CONFIG_CALL_THUNKS_DEBUG is not set CONFIG_MITIGATION_IBPB_ENTRY=y CONFIG_MITIGATION_IBRS_ENTRY=y CONFIG_MITIGATION_SRSO=y # CONFIG_MITIGATION_SLS is not set CONFIG_MITIGATION_GDS=y CONFIG_MITIGATION_RFDS=y CONFIG_MITIGATION_SPECTRE_BHI=y CONFIG_MITIGATION_MDS=y CONFIG_MITIGATION_TAA=y CONFIG_MITIGATION_MMIO_STALE_DATA=y CONFIG_MITIGATION_L1TF=y CONFIG_MITIGATION_RETBLEED=y CONFIG_MITIGATION_SPECTRE_V1=y CONFIG_MITIGATION_SPECTRE_V2=y CONFIG_MITIGATION_SRBDS=y CONFIG_MITIGATION_SSB=y CONFIG_ARCH_HAS_ADD_PAGES=y # # Power management and ACPI options # CONFIG_ARCH_HIBERNATION_HEADER=y CONFIG_SUSPEND=y CONFIG_SUSPEND_FREEZER=y # CONFIG_SUSPEND_SKIP_SYNC is not set CONFIG_HIBERNATE_CALLBACKS=y CONFIG_HIBERNATION=y CONFIG_HIBERNATION_SNAPSHOT_DEV=y CONFIG_HIBERNATION_COMP_LZO=y CONFIG_HIBERNATION_DEF_COMP="lzo" CONFIG_PM_STD_PARTITION="" CONFIG_PM_SLEEP=y CONFIG_PM_SLEEP_SMP=y # CONFIG_PM_AUTOSLEEP is not set # CONFIG_PM_USERSPACE_AUTOSLEEP is not set # CONFIG_PM_WAKELOCKS is not set CONFIG_PM=y CONFIG_PM_DEBUG=y # CONFIG_PM_ADVANCED_DEBUG is not set # CONFIG_PM_TEST_SUSPEND is not set CONFIG_PM_SLEEP_DEBUG=y CONFIG_PM_TRACE=y CONFIG_PM_TRACE_RTC=y CONFIG_PM_CLK=y # CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set # CONFIG_ENERGY_MODEL is not set CONFIG_ARCH_SUPPORTS_ACPI=y CONFIG_ACPI=y CONFIG_ACPI_LEGACY_TABLES_LOOKUP=y CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC=y CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT=y CONFIG_ACPI_THERMAL_LIB=y # CONFIG_ACPI_DEBUGGER is not set CONFIG_ACPI_SPCR_TABLE=y # CONFIG_ACPI_FPDT is not set CONFIG_ACPI_LPIT=y CONFIG_ACPI_SLEEP=y CONFIG_ACPI_REV_OVERRIDE_POSSIBLE=y CONFIG_ACPI_EC=y # CONFIG_ACPI_EC_DEBUGFS is not set CONFIG_ACPI_AC=y CONFIG_ACPI_BATTERY=y CONFIG_ACPI_BUTTON=y CONFIG_ACPI_VIDEO=y CONFIG_ACPI_FAN=y # CONFIG_ACPI_TAD is not set CONFIG_ACPI_DOCK=y CONFIG_ACPI_CPU_FREQ_PSS=y CONFIG_ACPI_PROCESSOR_CSTATE=y CONFIG_ACPI_PROCESSOR_IDLE=y CONFIG_ACPI_CPPC_LIB=y CONFIG_ACPI_PROCESSOR=y CONFIG_ACPI_HOTPLUG_CPU=y # CONFIG_ACPI_PROCESSOR_AGGREGATOR is not set CONFIG_ACPI_THERMAL=y CONFIG_ARCH_HAS_ACPI_TABLE_UPGRADE=y CONFIG_ACPI_TABLE_UPGRADE=y # CONFIG_ACPI_DEBUG is not set # CONFIG_ACPI_PCI_SLOT is not set CONFIG_ACPI_CONTAINER=y CONFIG_ACPI_HOTPLUG_MEMORY=y CONFIG_ACPI_HOTPLUG_IOAPIC=y # CONFIG_ACPI_SBS is not set # CONFIG_ACPI_HED is not set CONFIG_ACPI_BGRT=y # CONFIG_ACPI_REDUCED_HARDWARE_ONLY is not set CONFIG_ACPI_NHLT=y # CONFIG_ACPI_NFIT is not set CONFIG_ACPI_NUMA=y # CONFIG_ACPI_HMAT is not set CONFIG_HAVE_ACPI_APEI=y CONFIG_HAVE_ACPI_APEI_NMI=y # CONFIG_ACPI_APEI is not set # CONFIG_ACPI_DPTF is not set # CONFIG_ACPI_CONFIGFS is not set # CONFIG_ACPI_PFRUT is not set CONFIG_ACPI_PCC=y # CONFIG_ACPI_FFH is not set # CONFIG_PMIC_OPREGION is not set CONFIG_ACPI_PRMT=y CONFIG_X86_PM_TIMER=y # # CPU Frequency scaling # CONFIG_CPU_FREQ=y CONFIG_CPU_FREQ_GOV_ATTR_SET=y CONFIG_CPU_FREQ_GOV_COMMON=y # CONFIG_CPU_FREQ_STAT is not set # CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set # CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y # CONFIG_CPU_FREQ_DEFAULT_GOV_SCHEDUTIL is not set CONFIG_CPU_FREQ_GOV_PERFORMANCE=y # CONFIG_CPU_FREQ_GOV_POWERSAVE is not set CONFIG_CPU_FREQ_GOV_USERSPACE=y CONFIG_CPU_FREQ_GOV_ONDEMAND=y # CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y # # CPU frequency scaling drivers # CONFIG_X86_INTEL_PSTATE=y # CONFIG_X86_PCC_CPUFREQ is not set CONFIG_X86_AMD_PSTATE=y CONFIG_X86_AMD_PSTATE_DEFAULT_MODE=3 # CONFIG_X86_AMD_PSTATE_UT is not set CONFIG_X86_ACPI_CPUFREQ=y CONFIG_X86_ACPI_CPUFREQ_CPB=y # CONFIG_X86_POWERNOW_K8 is not set # CONFIG_X86_AMD_FREQ_SENSITIVITY is not set # CONFIG_X86_SPEEDSTEP_CENTRINO is not set # CONFIG_X86_P4_CLOCKMOD is not set # # shared options # CONFIG_CPUFREQ_ARCH_CUR_FREQ=y # end of CPU Frequency scaling # # CPU Idle # CONFIG_CPU_IDLE=y # CONFIG_CPU_IDLE_GOV_LADDER is not set CONFIG_CPU_IDLE_GOV_MENU=y # CONFIG_CPU_IDLE_GOV_TEO is not set CONFIG_CPU_IDLE_GOV_HALTPOLL=y CONFIG_HALTPOLL_CPUIDLE=y # end of CPU Idle # CONFIG_INTEL_IDLE is not set # end of Power management and ACPI options # # Bus options (PCI etc.) # CONFIG_PCI_DIRECT=y CONFIG_PCI_MMCONFIG=y CONFIG_MMCONF_FAM10H=y # CONFIG_ISA_BUS is not set CONFIG_ISA_DMA_API=y CONFIG_AMD_NB=y CONFIG_AMD_NODE=y # end of Bus options (PCI etc.) # # Binary Emulations # CONFIG_IA32_EMULATION=y # CONFIG_IA32_EMULATION_DEFAULT_DISABLED is not set # CONFIG_X86_X32_ABI is not set CONFIG_COMPAT_32=y CONFIG_COMPAT=y CONFIG_COMPAT_FOR_U64_ALIGNMENT=y # end of Binary Emulations CONFIG_KVM_COMMON=y CONFIG_HAVE_KVM_PFNCACHE=y CONFIG_HAVE_KVM_IRQCHIP=y CONFIG_HAVE_KVM_IRQ_ROUTING=y CONFIG_HAVE_KVM_DIRTY_RING=y CONFIG_HAVE_KVM_DIRTY_RING_TSO=y CONFIG_HAVE_KVM_DIRTY_RING_ACQ_REL=y CONFIG_KVM_MMIO=y CONFIG_KVM_ASYNC_PF=y CONFIG_HAVE_KVM_MSI=y CONFIG_HAVE_KVM_READONLY_MEM=y CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT=y CONFIG_KVM_VFIO=y CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT=y CONFIG_KVM_GENERIC_PRE_FAULT_MEMORY=y CONFIG_KVM_COMPAT=y CONFIG_HAVE_KVM_IRQ_BYPASS=y CONFIG_HAVE_KVM_NO_POLL=y CONFIG_KVM_XFER_TO_GUEST_WORK=y CONFIG_HAVE_KVM_PM_NOTIFIER=y CONFIG_KVM_GENERIC_HARDWARE_ENABLING=y CONFIG_KVM_GENERIC_MMU_NOTIFIER=y CONFIG_KVM_ELIDE_TLB_FLUSH_IF_YOUNG=y CONFIG_KVM_MMU_LOCKLESS_AGING=y CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES=y CONFIG_KVM_PRIVATE_MEM=y CONFIG_KVM_GENERIC_PRIVATE_MEM=y CONFIG_HAVE_KVM_ARCH_GMEM_PREPARE=y CONFIG_HAVE_KVM_ARCH_GMEM_INVALIDATE=y CONFIG_VIRTUALIZATION=y CONFIG_KVM_X86=y CONFIG_KVM=y CONFIG_KVM_WERROR=y CONFIG_KVM_SW_PROTECTED_VM=y # CONFIG_KVM_INTEL is not set CONFIG_KVM_AMD=y CONFIG_KVM_AMD_SEV=y CONFIG_KVM_SMM=y CONFIG_KVM_HYPERV=y # CONFIG_KVM_XEN is not set # CONFIG_KVM_PROVE_MMU is not set CONFIG_KVM_MAX_NR_VCPUS=1024 CONFIG_X86_REQUIRED_FEATURE_ALWAYS=y CONFIG_X86_REQUIRED_FEATURE_NOPL=y CONFIG_X86_REQUIRED_FEATURE_CX8=y CONFIG_X86_REQUIRED_FEATURE_CMOV=y CONFIG_X86_REQUIRED_FEATURE_CPUID=y CONFIG_X86_REQUIRED_FEATURE_FPU=y CONFIG_X86_REQUIRED_FEATURE_PAE=y CONFIG_X86_REQUIRED_FEATURE_PSE=y CONFIG_X86_REQUIRED_FEATURE_PGE=y CONFIG_X86_REQUIRED_FEATURE_MSR=y CONFIG_X86_REQUIRED_FEATURE_FXSR=y CONFIG_X86_REQUIRED_FEATURE_XMM=y CONFIG_X86_REQUIRED_FEATURE_XMM2=y CONFIG_X86_REQUIRED_FEATURE_LM=y CONFIG_X86_DISABLED_FEATURE_VME=y CONFIG_X86_DISABLED_FEATURE_K6_MTRR=y CONFIG_X86_DISABLED_FEATURE_CYRIX_ARR=y CONFIG_X86_DISABLED_FEATURE_CENTAUR_MCR=y CONFIG_X86_DISABLED_FEATURE_LAM=y CONFIG_X86_DISABLED_FEATURE_ENQCMD=y CONFIG_X86_DISABLED_FEATURE_SGX=y CONFIG_X86_DISABLED_FEATURE_XENPV=y CONFIG_X86_DISABLED_FEATURE_TDX_GUEST=y CONFIG_X86_DISABLED_FEATURE_USER_SHSTK=y CONFIG_X86_DISABLED_FEATURE_IBT=y CONFIG_X86_DISABLED_FEATURE_FRED=y CONFIG_AS_AVX512=y CONFIG_AS_SHA1_NI=y CONFIG_AS_SHA256_NI=y CONFIG_AS_GFNI=y CONFIG_AS_VAES=y CONFIG_AS_VPCLMULQDQ=y CONFIG_AS_WRUSS=y CONFIG_ARCH_CONFIGURES_CPU_MITIGATIONS=y # # General architecture-dependent options # CONFIG_HOTPLUG_SMT=y CONFIG_HOTPLUG_CORE_SYNC=y CONFIG_HOTPLUG_CORE_SYNC_DEAD=y CONFIG_HOTPLUG_CORE_SYNC_FULL=y CONFIG_HOTPLUG_SPLIT_STARTUP=y CONFIG_HOTPLUG_PARALLEL=y CONFIG_GENERIC_ENTRY=y CONFIG_KPROBES=y CONFIG_JUMP_LABEL=y # CONFIG_STATIC_KEYS_SELFTEST is not set # CONFIG_STATIC_CALL_SELFTEST is not set CONFIG_OPTPROBES=y CONFIG_UPROBES=y CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y CONFIG_ARCH_USE_BUILTIN_BSWAP=y CONFIG_KRETPROBES=y CONFIG_KRETPROBE_ON_RETHOOK=y CONFIG_USER_RETURN_NOTIFIER=y CONFIG_HAVE_IOREMAP_PROT=y CONFIG_HAVE_KPROBES=y CONFIG_HAVE_KRETPROBES=y CONFIG_HAVE_OPTPROBES=y CONFIG_HAVE_KPROBES_ON_FTRACE=y CONFIG_ARCH_CORRECT_STACKTRACE_ON_KRETPROBE=y CONFIG_HAVE_FUNCTION_ERROR_INJECTION=y CONFIG_HAVE_NMI=y CONFIG_TRACE_IRQFLAGS_SUPPORT=y CONFIG_TRACE_IRQFLAGS_NMI_SUPPORT=y CONFIG_HAVE_ARCH_TRACEHOOK=y CONFIG_HAVE_DMA_CONTIGUOUS=y CONFIG_GENERIC_SMP_IDLE_THREAD=y CONFIG_ARCH_HAS_FORTIFY_SOURCE=y CONFIG_ARCH_HAS_SET_MEMORY=y CONFIG_ARCH_HAS_SET_DIRECT_MAP=y CONFIG_ARCH_HAS_CPU_FINALIZE_INIT=y CONFIG_ARCH_HAS_CPU_PASID=y CONFIG_HAVE_ARCH_THREAD_STRUCT_WHITELIST=y CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT=y CONFIG_ARCH_WANTS_NO_INSTR=y CONFIG_HAVE_ASM_MODVERSIONS=y CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y CONFIG_HAVE_RSEQ=y CONFIG_HAVE_RUST=y CONFIG_HAVE_FUNCTION_ARG_ACCESS_API=y CONFIG_HAVE_HW_BREAKPOINT=y CONFIG_HAVE_MIXED_BREAKPOINTS_REGS=y CONFIG_HAVE_USER_RETURN_NOTIFIER=y CONFIG_HAVE_PERF_EVENTS_NMI=y CONFIG_HAVE_HARDLOCKUP_DETECTOR_PERF=y CONFIG_HAVE_PERF_REGS=y CONFIG_HAVE_PERF_USER_STACK_DUMP=y CONFIG_HAVE_ARCH_JUMP_LABEL=y CONFIG_HAVE_ARCH_JUMP_LABEL_RELATIVE=y CONFIG_MMU_GATHER_TABLE_FREE=y CONFIG_MMU_GATHER_RCU_TABLE_FREE=y CONFIG_MMU_GATHER_MERGE_VMAS=y CONFIG_MMU_LAZY_TLB_REFCOUNT=y CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y CONFIG_ARCH_HAVE_EXTRA_ELF_NOTES=y CONFIG_ARCH_HAS_NMI_SAFE_THIS_CPU_OPS=y CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y CONFIG_HAVE_CMPXCHG_LOCAL=y CONFIG_HAVE_CMPXCHG_DOUBLE=y CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION=y CONFIG_ARCH_WANT_OLD_COMPAT_IPC=y CONFIG_HAVE_ARCH_SECCOMP=y CONFIG_HAVE_ARCH_SECCOMP_FILTER=y CONFIG_SECCOMP=y CONFIG_SECCOMP_FILTER=y # CONFIG_SECCOMP_CACHE_DEBUG is not set CONFIG_HAVE_ARCH_STACKLEAK=y CONFIG_HAVE_STACKPROTECTOR=y CONFIG_STACKPROTECTOR=y CONFIG_STACKPROTECTOR_STRONG=y CONFIG_ARCH_SUPPORTS_LTO_CLANG=y CONFIG_ARCH_SUPPORTS_LTO_CLANG_THIN=y CONFIG_LTO_NONE=y CONFIG_ARCH_SUPPORTS_AUTOFDO_CLANG=y CONFIG_ARCH_SUPPORTS_PROPELLER_CLANG=y CONFIG_ARCH_SUPPORTS_CFI_CLANG=y CONFIG_HAVE_ARCH_WITHIN_STACK_FRAMES=y CONFIG_HAVE_CONTEXT_TRACKING_USER=y CONFIG_HAVE_CONTEXT_TRACKING_USER_OFFSTACK=y CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y CONFIG_HAVE_MOVE_PUD=y CONFIG_HAVE_MOVE_PMD=y CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD=y CONFIG_HAVE_ARCH_HUGE_VMAP=y CONFIG_HAVE_ARCH_HUGE_VMALLOC=y CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y CONFIG_HAVE_ARCH_SOFT_DIRTY=y CONFIG_HAVE_MOD_ARCH_SPECIFIC=y CONFIG_MODULES_USE_ELF_RELA=y CONFIG_ARCH_HAS_EXECMEM_ROX=y CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y CONFIG_HAVE_SOFTIRQ_ON_OWN_STACK=y CONFIG_SOFTIRQ_ON_OWN_STACK=y CONFIG_ARCH_HAS_ELF_RANDOMIZE=y CONFIG_HAVE_ARCH_MMAP_RND_BITS=y CONFIG_HAVE_EXIT_THREAD=y CONFIG_ARCH_MMAP_RND_BITS=28 CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS=y CONFIG_ARCH_MMAP_RND_COMPAT_BITS=8 CONFIG_HAVE_ARCH_COMPAT_MMAP_BASES=y CONFIG_HAVE_PAGE_SIZE_4KB=y CONFIG_PAGE_SIZE_4KB=y CONFIG_PAGE_SIZE_LESS_THAN_64KB=y CONFIG_PAGE_SIZE_LESS_THAN_256KB=y CONFIG_PAGE_SHIFT=12 CONFIG_HAVE_OBJTOOL=y CONFIG_HAVE_JUMP_LABEL_HACK=y CONFIG_HAVE_NOINSTR_HACK=y CONFIG_HAVE_NOINSTR_VALIDATION=y CONFIG_HAVE_UACCESS_VALIDATION=y CONFIG_HAVE_STACK_VALIDATION=y CONFIG_HAVE_RELIABLE_STACKTRACE=y CONFIG_OLD_SIGSUSPEND3=y CONFIG_COMPAT_OLD_SIGACTION=y CONFIG_COMPAT_32BIT_TIME=y CONFIG_ARCH_SUPPORTS_RT=y CONFIG_HAVE_ARCH_VMAP_STACK=y CONFIG_VMAP_STACK=y CONFIG_HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET=y CONFIG_RANDOMIZE_KSTACK_OFFSET=y # CONFIG_RANDOMIZE_KSTACK_OFFSET_DEFAULT is not set CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y CONFIG_STRICT_KERNEL_RWX=y CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y CONFIG_STRICT_MODULE_RWX=y CONFIG_HAVE_ARCH_PREL32_RELOCATIONS=y CONFIG_ARCH_USE_MEMREMAP_PROT=y # CONFIG_LOCK_EVENT_COUNTS is not set CONFIG_ARCH_HAS_MEM_ENCRYPT=y CONFIG_ARCH_HAS_CC_PLATFORM=y CONFIG_HAVE_STATIC_CALL=y CONFIG_HAVE_STATIC_CALL_INLINE=y CONFIG_HAVE_PREEMPT_DYNAMIC=y CONFIG_HAVE_PREEMPT_DYNAMIC_CALL=y CONFIG_ARCH_WANT_LD_ORPHAN_WARN=y CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y CONFIG_ARCH_SUPPORTS_PAGE_TABLE_CHECK=y CONFIG_ARCH_HAS_ELFCORE_COMPAT=y CONFIG_ARCH_HAS_PARANOID_L1D_FLUSH=y CONFIG_DYNAMIC_SIGFRAME=y CONFIG_ARCH_HAS_HW_PTE_YOUNG=y CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG=y CONFIG_ARCH_HAS_KERNEL_FPU_SUPPORT=y CONFIG_ARCH_VMLINUX_NEEDS_RELOCS=y # # GCOV-based kernel profiling # # CONFIG_GCOV_KERNEL is not set CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y # end of GCOV-based kernel profiling CONFIG_HAVE_GCC_PLUGINS=y CONFIG_FUNCTION_ALIGNMENT_4B=y CONFIG_FUNCTION_ALIGNMENT_16B=y CONFIG_FUNCTION_ALIGNMENT=16 # end of General architecture-dependent options CONFIG_RT_MUTEXES=y CONFIG_MODULES=y # CONFIG_MODULE_DEBUG is not set # CONFIG_MODULE_FORCE_LOAD is not set CONFIG_MODULE_UNLOAD=y CONFIG_MODULE_FORCE_UNLOAD=y # CONFIG_MODULE_UNLOAD_TAINT_TRACKING is not set # CONFIG_MODVERSIONS is not set # CONFIG_MODULE_SRCVERSION_ALL is not set # CONFIG_MODULE_SIG is not set # CONFIG_MODULE_COMPRESS is not set # CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS is not set CONFIG_MODPROBE_PATH="/sbin/modprobe" # CONFIG_TRIM_UNUSED_KSYMS is not set CONFIG_MODULES_TREE_LOOKUP=y CONFIG_BLOCK=y CONFIG_BLOCK_LEGACY_AUTOLOAD=y CONFIG_BLK_RQ_ALLOC_TIME=y CONFIG_BLK_DEV_BSG_COMMON=y # CONFIG_BLK_DEV_BSGLIB is not set # CONFIG_BLK_DEV_INTEGRITY is not set CONFIG_BLK_DEV_WRITE_MOUNTED=y # CONFIG_BLK_DEV_ZONED is not set # CONFIG_BLK_DEV_THROTTLING is not set # CONFIG_BLK_WBT is not set CONFIG_BLK_CGROUP_IOLATENCY=y CONFIG_BLK_CGROUP_IOCOST=y CONFIG_BLK_CGROUP_IOPRIO=y CONFIG_BLK_DEBUG_FS=y # CONFIG_BLK_SED_OPAL is not set # CONFIG_BLK_INLINE_ENCRYPTION is not set # # Partition Types # # CONFIG_PARTITION_ADVANCED is not set CONFIG_MSDOS_PARTITION=y CONFIG_EFI_PARTITION=y # end of Partition Types CONFIG_BLK_MQ_PCI=y CONFIG_BLK_MQ_VIRTIO=y CONFIG_BLK_PM=y CONFIG_BLOCK_HOLDER_DEPRECATED=y CONFIG_BLK_MQ_STACKING=y # # IO Schedulers # CONFIG_MQ_IOSCHED_DEADLINE=y CONFIG_MQ_IOSCHED_KYBER=y # CONFIG_IOSCHED_BFQ is not set # end of IO Schedulers CONFIG_PREEMPT_NOTIFIERS=y CONFIG_PADATA=y CONFIG_ASN1=y CONFIG_UNINLINE_SPIN_UNLOCK=y CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y CONFIG_MUTEX_SPIN_ON_OWNER=y CONFIG_RWSEM_SPIN_ON_OWNER=y CONFIG_LOCK_SPIN_ON_OWNER=y CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y CONFIG_QUEUED_SPINLOCKS=y CONFIG_ARCH_USE_QUEUED_RWLOCKS=y CONFIG_QUEUED_RWLOCKS=y CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE=y CONFIG_ARCH_HAS_SYNC_CORE_BEFORE_USERMODE=y CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y CONFIG_FREEZER=y # # Executable file formats # CONFIG_BINFMT_ELF=y CONFIG_COMPAT_BINFMT_ELF=y CONFIG_ELFCORE=y CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y CONFIG_BINFMT_SCRIPT=y CONFIG_BINFMT_MISC=y CONFIG_COREDUMP=y # end of Executable file formats # # Memory Management options # CONFIG_SWAP=y # CONFIG_ZSWAP is not set # # Slab allocator options # CONFIG_SLUB=y CONFIG_KVFREE_RCU_BATCHED=y # CONFIG_SLUB_TINY is not set CONFIG_SLAB_MERGE_DEFAULT=y # CONFIG_SLAB_FREELIST_RANDOM is not set # CONFIG_SLAB_FREELIST_HARDENED is not set # CONFIG_SLAB_BUCKETS is not set # CONFIG_SLUB_STATS is not set CONFIG_SLUB_CPU_PARTIAL=y # CONFIG_RANDOM_KMALLOC_CACHES is not set # end of Slab allocator options # CONFIG_SHUFFLE_PAGE_ALLOCATOR is not set # CONFIG_COMPAT_BRK is not set CONFIG_SPARSEMEM=y CONFIG_SPARSEMEM_EXTREME=y CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y CONFIG_SPARSEMEM_VMEMMAP=y CONFIG_SPARSEMEM_VMEMMAP_PREINIT=y CONFIG_ARCH_WANT_OPTIMIZE_DAX_VMEMMAP=y CONFIG_ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP=y CONFIG_ARCH_WANT_HUGETLB_VMEMMAP_PREINIT=y CONFIG_HAVE_GUP_FAST=y CONFIG_NUMA_KEEP_MEMINFO=y CONFIG_MEMORY_ISOLATION=y CONFIG_EXCLUSIVE_SYSTEM_RAM=y CONFIG_HAVE_BOOTMEM_INFO_NODE=y CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE=y CONFIG_MEMORY_HOTPLUG=y CONFIG_MHP_DEFAULT_ONLINE_TYPE_OFFLINE=y # CONFIG_MHP_DEFAULT_ONLINE_TYPE_ONLINE_AUTO is not set # CONFIG_MHP_DEFAULT_ONLINE_TYPE_ONLINE_KERNEL is not set # CONFIG_MHP_DEFAULT_ONLINE_TYPE_ONLINE_MOVABLE is not set CONFIG_MEMORY_HOTREMOVE=y CONFIG_MHP_MEMMAP_ON_MEMORY=y CONFIG_ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE=y CONFIG_SPLIT_PTE_PTLOCKS=y CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y CONFIG_SPLIT_PMD_PTLOCKS=y CONFIG_COMPACTION=y CONFIG_COMPACT_UNEVICTABLE_DEFAULT=1 # CONFIG_PAGE_REPORTING is not set CONFIG_MIGRATION=y CONFIG_DEVICE_MIGRATION=y CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION=y CONFIG_CONTIG_ALLOC=y CONFIG_PCP_BATCH_SCALE_MAX=5 CONFIG_PHYS_ADDR_T_64BIT=y CONFIG_MMU_NOTIFIER=y # CONFIG_KSM is not set CONFIG_DEFAULT_MMAP_MIN_ADDR=4096 CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y # CONFIG_MEMORY_FAILURE is not set CONFIG_ARCH_WANT_GENERAL_HUGETLB=y CONFIG_ARCH_WANTS_THP_SWAP=y # CONFIG_TRANSPARENT_HUGEPAGE is not set CONFIG_PAGE_MAPCOUNT=y CONFIG_PGTABLE_HAS_HUGE_LEAVES=y CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y CONFIG_USE_PERCPU_NUMA_NODE_ID=y CONFIG_HAVE_SETUP_PER_CPU_AREA=y # CONFIG_CMA is not set CONFIG_GENERIC_EARLY_IOREMAP=y # CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set # CONFIG_IDLE_PAGE_TRACKING is not set CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y CONFIG_ARCH_HAS_CURRENT_STACK_POINTER=y CONFIG_ARCH_HAS_PTE_DEVMAP=y CONFIG_ARCH_HAS_ZONE_DMA_SET=y CONFIG_ZONE_DMA=y CONFIG_ZONE_DMA32=y CONFIG_ZONE_DEVICE=y CONFIG_GET_FREE_REGION=y CONFIG_DEVICE_PRIVATE=y CONFIG_VMAP_PFN=y CONFIG_ARCH_USES_HIGH_VMA_FLAGS=y CONFIG_ARCH_HAS_PKEYS=y CONFIG_ARCH_USES_PG_ARCH_2=y CONFIG_VM_EVENT_COUNTERS=y # CONFIG_PERCPU_STATS is not set # CONFIG_GUP_TEST is not set # CONFIG_DMAPOOL_TEST is not set CONFIG_ARCH_HAS_PTE_SPECIAL=y CONFIG_MEMFD_CREATE=y CONFIG_SECRETMEM=y # CONFIG_ANON_VMA_NAME is not set # CONFIG_USERFAULTFD is not set # CONFIG_LRU_GEN is not set CONFIG_ARCH_SUPPORTS_PER_VMA_LOCK=y CONFIG_PER_VMA_LOCK=y CONFIG_LOCK_MM_AND_FIND_VMA=y CONFIG_IOMMU_MM_DATA=y CONFIG_EXECMEM=y CONFIG_NUMA_MEMBLKS=y # CONFIG_NUMA_EMU is not set CONFIG_ARCH_SUPPORTS_PT_RECLAIM=y CONFIG_PT_RECLAIM=y # # Data Access Monitoring # # CONFIG_DAMON is not set # end of Data Access Monitoring # end of Memory Management options CONFIG_NET=y CONFIG_NET_INGRESS=y CONFIG_NET_EGRESS=y CONFIG_NET_XGRESS=y CONFIG_SKB_EXTENSIONS=y # # Networking options # CONFIG_PACKET=y # CONFIG_PACKET_DIAG is not set CONFIG_UNIX=y CONFIG_AF_UNIX_OOB=y # CONFIG_UNIX_DIAG is not set # CONFIG_TLS is not set CONFIG_XFRM=y CONFIG_XFRM_ALGO=y CONFIG_XFRM_USER=y # CONFIG_XFRM_USER_COMPAT is not set # CONFIG_XFRM_INTERFACE is not set # CONFIG_XFRM_SUB_POLICY is not set # CONFIG_XFRM_MIGRATE is not set # CONFIG_XFRM_STATISTICS is not set CONFIG_XFRM_AH=y CONFIG_XFRM_ESP=y # CONFIG_NET_KEY is not set # CONFIG_XFRM_IPTFS is not set CONFIG_NET_HANDSHAKE=y CONFIG_INET=y CONFIG_IP_MULTICAST=y CONFIG_IP_ADVANCED_ROUTER=y # CONFIG_IP_FIB_TRIE_STATS is not set CONFIG_IP_MULTIPLE_TABLES=y CONFIG_IP_ROUTE_MULTIPATH=y CONFIG_IP_ROUTE_VERBOSE=y CONFIG_IP_ROUTE_CLASSID=y CONFIG_IP_PNP=y CONFIG_IP_PNP_DHCP=y CONFIG_IP_PNP_BOOTP=y CONFIG_IP_PNP_RARP=y # CONFIG_NET_IPIP is not set # CONFIG_NET_IPGRE_DEMUX is not set CONFIG_NET_IP_TUNNEL=y CONFIG_IP_MROUTE_COMMON=y CONFIG_IP_MROUTE=y CONFIG_IP_MROUTE_MULTIPLE_TABLES=y CONFIG_IP_PIMSM_V1=y CONFIG_IP_PIMSM_V2=y CONFIG_SYN_COOKIES=y # CONFIG_NET_IPVTI is not set # CONFIG_NET_FOU is not set # CONFIG_NET_FOU_IP_TUNNELS is not set # CONFIG_INET_AH is not set # CONFIG_INET_ESP is not set # CONFIG_INET_IPCOMP is not set CONFIG_INET_TABLE_PERTURB_ORDER=16 CONFIG_INET_TUNNEL=y # CONFIG_INET_DIAG is not set CONFIG_TCP_CONG_ADVANCED=y # CONFIG_TCP_CONG_BIC is not set CONFIG_TCP_CONG_CUBIC=y # CONFIG_TCP_CONG_WESTWOOD is not set # CONFIG_TCP_CONG_HTCP is not set # CONFIG_TCP_CONG_HSTCP is not set # CONFIG_TCP_CONG_HYBLA is not set # CONFIG_TCP_CONG_VEGAS is not set # CONFIG_TCP_CONG_NV is not set # CONFIG_TCP_CONG_SCALABLE is not set # CONFIG_TCP_CONG_LP is not set # CONFIG_TCP_CONG_VENO is not set # CONFIG_TCP_CONG_YEAH is not set # CONFIG_TCP_CONG_ILLINOIS is not set # CONFIG_TCP_CONG_DCTCP is not set # CONFIG_TCP_CONG_CDG is not set # CONFIG_TCP_CONG_BBR is not set CONFIG_DEFAULT_CUBIC=y # CONFIG_DEFAULT_RENO is not set CONFIG_DEFAULT_TCP_CONG="cubic" CONFIG_TCP_SIGPOOL=y # CONFIG_TCP_AO is not set CONFIG_TCP_MD5SIG=y CONFIG_IPV6=y CONFIG_IPV6_ROUTER_PREF=y CONFIG_IPV6_ROUTE_INFO=y # CONFIG_IPV6_OPTIMISTIC_DAD is not set CONFIG_INET6_AH=y CONFIG_INET6_ESP=y # CONFIG_INET6_ESP_OFFLOAD is not set # CONFIG_INET6_ESPINTCP is not set # CONFIG_INET6_IPCOMP is not set CONFIG_IPV6_MIP6=y CONFIG_IPV6_ILA=y CONFIG_INET6_TUNNEL=y CONFIG_IPV6_VTI=y CONFIG_IPV6_SIT=y CONFIG_IPV6_SIT_6RD=y CONFIG_IPV6_NDISC_NODETYPE=y CONFIG_IPV6_TUNNEL=y CONFIG_IPV6_MULTIPLE_TABLES=y CONFIG_IPV6_SUBTREES=y CONFIG_IPV6_MROUTE=y CONFIG_IPV6_MROUTE_MULTIPLE_TABLES=y CONFIG_IPV6_PIMSM_V2=y CONFIG_IPV6_SEG6_LWTUNNEL=y CONFIG_IPV6_SEG6_HMAC=y CONFIG_IPV6_SEG6_BPF=y # CONFIG_IPV6_RPL_LWTUNNEL is not set CONFIG_IPV6_IOAM6_LWTUNNEL=y CONFIG_NETLABEL=y # CONFIG_MPTCP is not set CONFIG_NETWORK_SECMARK=y CONFIG_NET_PTP_CLASSIFY=y # CONFIG_NETWORK_PHY_TIMESTAMPING is not set CONFIG_NETFILTER=y CONFIG_NETFILTER_ADVANCED=y CONFIG_BRIDGE_NETFILTER=y # # Core Netfilter Configuration # CONFIG_NETFILTER_INGRESS=y CONFIG_NETFILTER_EGRESS=y CONFIG_NETFILTER_SKIP_EGRESS=y CONFIG_NETFILTER_NETLINK=y CONFIG_NETFILTER_FAMILY_BRIDGE=y CONFIG_NETFILTER_FAMILY_ARP=y CONFIG_NETFILTER_NETLINK_HOOK=y CONFIG_NETFILTER_NETLINK_ACCT=y CONFIG_NETFILTER_NETLINK_QUEUE=y CONFIG_NETFILTER_NETLINK_LOG=y CONFIG_NETFILTER_NETLINK_OSF=y CONFIG_NF_CONNTRACK=y CONFIG_NF_LOG_SYSLOG=y CONFIG_NETFILTER_CONNCOUNT=y CONFIG_NF_CONNTRACK_MARK=y CONFIG_NF_CONNTRACK_SECMARK=y CONFIG_NF_CONNTRACK_ZONES=y CONFIG_NF_CONNTRACK_PROCFS=y # CONFIG_NF_CONNTRACK_EVENTS is not set # CONFIG_NF_CONNTRACK_TIMEOUT is not set # CONFIG_NF_CONNTRACK_TIMESTAMP is not set CONFIG_NF_CONNTRACK_LABELS=y CONFIG_NF_CT_PROTO_DCCP=y CONFIG_NF_CT_PROTO_SCTP=y CONFIG_NF_CT_PROTO_UDPLITE=y # CONFIG_NF_CONNTRACK_AMANDA is not set CONFIG_NF_CONNTRACK_FTP=y # CONFIG_NF_CONNTRACK_H323 is not set CONFIG_NF_CONNTRACK_IRC=y # CONFIG_NF_CONNTRACK_NETBIOS_NS is not set # CONFIG_NF_CONNTRACK_SNMP is not set # CONFIG_NF_CONNTRACK_PPTP is not set # CONFIG_NF_CONNTRACK_SANE is not set CONFIG_NF_CONNTRACK_SIP=y # CONFIG_NF_CONNTRACK_TFTP is not set CONFIG_NF_CT_NETLINK=y # CONFIG_NF_CT_NETLINK_HELPER is not set CONFIG_NETFILTER_NETLINK_GLUE_CT=y CONFIG_NF_NAT=y CONFIG_NF_NAT_FTP=y CONFIG_NF_NAT_IRC=y CONFIG_NF_NAT_SIP=y CONFIG_NF_NAT_REDIRECT=y CONFIG_NF_NAT_MASQUERADE=y CONFIG_NETFILTER_SYNPROXY=y CONFIG_NF_TABLES=y CONFIG_NF_TABLES_INET=y CONFIG_NF_TABLES_NETDEV=y CONFIG_NFT_NUMGEN=y CONFIG_NFT_CT=y CONFIG_NFT_CONNLIMIT=y CONFIG_NFT_LOG=y CONFIG_NFT_LIMIT=y CONFIG_NFT_MASQ=y CONFIG_NFT_REDIR=y CONFIG_NFT_NAT=y CONFIG_NFT_TUNNEL=y CONFIG_NFT_QUEUE=y CONFIG_NFT_QUOTA=y CONFIG_NFT_REJECT=y CONFIG_NFT_REJECT_INET=y CONFIG_NFT_COMPAT=y CONFIG_NFT_HASH=y CONFIG_NFT_FIB=y CONFIG_NFT_FIB_INET=y CONFIG_NFT_XFRM=y CONFIG_NFT_SOCKET=y CONFIG_NFT_OSF=y CONFIG_NFT_TPROXY=y CONFIG_NFT_SYNPROXY=y CONFIG_NF_DUP_NETDEV=y CONFIG_NFT_DUP_NETDEV=y CONFIG_NFT_FWD_NETDEV=y CONFIG_NFT_FIB_NETDEV=y CONFIG_NFT_REJECT_NETDEV=y # CONFIG_NF_FLOW_TABLE is not set CONFIG_NETFILTER_XTABLES=y CONFIG_NETFILTER_XTABLES_COMPAT=y # # Xtables combined modules # CONFIG_NETFILTER_XT_MARK=y CONFIG_NETFILTER_XT_CONNMARK=y # # Xtables targets # CONFIG_NETFILTER_XT_TARGET_AUDIT=y CONFIG_NETFILTER_XT_TARGET_CHECKSUM=y CONFIG_NETFILTER_XT_TARGET_CLASSIFY=y CONFIG_NETFILTER_XT_TARGET_CONNMARK=y CONFIG_NETFILTER_XT_TARGET_CONNSECMARK=y # CONFIG_NETFILTER_XT_TARGET_CT is not set CONFIG_NETFILTER_XT_TARGET_DSCP=y CONFIG_NETFILTER_XT_TARGET_HL=y CONFIG_NETFILTER_XT_TARGET_HMARK=y CONFIG_NETFILTER_XT_TARGET_IDLETIMER=y CONFIG_NETFILTER_XT_TARGET_LED=y CONFIG_NETFILTER_XT_TARGET_LOG=y CONFIG_NETFILTER_XT_TARGET_MARK=y CONFIG_NETFILTER_XT_NAT=y CONFIG_NETFILTER_XT_TARGET_NETMAP=y CONFIG_NETFILTER_XT_TARGET_NFLOG=y CONFIG_NETFILTER_XT_TARGET_NFQUEUE=y CONFIG_NETFILTER_XT_TARGET_RATEEST=y CONFIG_NETFILTER_XT_TARGET_REDIRECT=y CONFIG_NETFILTER_XT_TARGET_MASQUERADE=y CONFIG_NETFILTER_XT_TARGET_TEE=y CONFIG_NETFILTER_XT_TARGET_TPROXY=y CONFIG_NETFILTER_XT_TARGET_SECMARK=y CONFIG_NETFILTER_XT_TARGET_TCPMSS=y CONFIG_NETFILTER_XT_TARGET_TCPOPTSTRIP=y # # Xtables matches # CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=y CONFIG_NETFILTER_XT_MATCH_BPF=y CONFIG_NETFILTER_XT_MATCH_CGROUP=y CONFIG_NETFILTER_XT_MATCH_CLUSTER=y CONFIG_NETFILTER_XT_MATCH_COMMENT=y CONFIG_NETFILTER_XT_MATCH_CONNBYTES=y CONFIG_NETFILTER_XT_MATCH_CONNLABEL=y CONFIG_NETFILTER_XT_MATCH_CONNLIMIT=y CONFIG_NETFILTER_XT_MATCH_CONNMARK=y CONFIG_NETFILTER_XT_MATCH_CONNTRACK=y CONFIG_NETFILTER_XT_MATCH_CPU=y CONFIG_NETFILTER_XT_MATCH_DCCP=y CONFIG_NETFILTER_XT_MATCH_DEVGROUP=y CONFIG_NETFILTER_XT_MATCH_DSCP=y CONFIG_NETFILTER_XT_MATCH_ECN=y CONFIG_NETFILTER_XT_MATCH_ESP=y CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=y CONFIG_NETFILTER_XT_MATCH_HELPER=y CONFIG_NETFILTER_XT_MATCH_HL=y CONFIG_NETFILTER_XT_MATCH_IPCOMP=y CONFIG_NETFILTER_XT_MATCH_IPRANGE=y CONFIG_NETFILTER_XT_MATCH_L2TP=y CONFIG_NETFILTER_XT_MATCH_LENGTH=y CONFIG_NETFILTER_XT_MATCH_LIMIT=y CONFIG_NETFILTER_XT_MATCH_MAC=y CONFIG_NETFILTER_XT_MATCH_MARK=y CONFIG_NETFILTER_XT_MATCH_MULTIPORT=y CONFIG_NETFILTER_XT_MATCH_NFACCT=y CONFIG_NETFILTER_XT_MATCH_OSF=y CONFIG_NETFILTER_XT_MATCH_OWNER=y CONFIG_NETFILTER_XT_MATCH_POLICY=y CONFIG_NETFILTER_XT_MATCH_PHYSDEV=y CONFIG_NETFILTER_XT_MATCH_PKTTYPE=y CONFIG_NETFILTER_XT_MATCH_QUOTA=y CONFIG_NETFILTER_XT_MATCH_RATEEST=y CONFIG_NETFILTER_XT_MATCH_REALM=y CONFIG_NETFILTER_XT_MATCH_RECENT=y CONFIG_NETFILTER_XT_MATCH_SCTP=y CONFIG_NETFILTER_XT_MATCH_SOCKET=y CONFIG_NETFILTER_XT_MATCH_STATE=y CONFIG_NETFILTER_XT_MATCH_STATISTIC=y CONFIG_NETFILTER_XT_MATCH_STRING=y CONFIG_NETFILTER_XT_MATCH_TCPMSS=y CONFIG_NETFILTER_XT_MATCH_TIME=y CONFIG_NETFILTER_XT_MATCH_U32=y # end of Core Netfilter Configuration # CONFIG_IP_SET is not set # CONFIG_IP_VS is not set # # IP: Netfilter Configuration # CONFIG_NF_DEFRAG_IPV4=y CONFIG_IP_NF_IPTABLES_LEGACY=y CONFIG_NF_SOCKET_IPV4=y CONFIG_NF_TPROXY_IPV4=y CONFIG_NF_TABLES_IPV4=y CONFIG_NFT_REJECT_IPV4=y CONFIG_NFT_DUP_IPV4=y CONFIG_NFT_FIB_IPV4=y CONFIG_NF_TABLES_ARP=y CONFIG_NF_DUP_IPV4=y CONFIG_NF_LOG_ARP=m CONFIG_NF_LOG_IPV4=m CONFIG_NF_REJECT_IPV4=y CONFIG_IP_NF_IPTABLES=y # CONFIG_IP_NF_MATCH_AH is not set # CONFIG_IP_NF_MATCH_ECN is not set # CONFIG_IP_NF_MATCH_RPFILTER is not set # CONFIG_IP_NF_MATCH_TTL is not set CONFIG_IP_NF_FILTER=y CONFIG_IP_NF_TARGET_REJECT=y # CONFIG_IP_NF_TARGET_SYNPROXY is not set CONFIG_IP_NF_NAT=y CONFIG_IP_NF_TARGET_MASQUERADE=m # CONFIG_IP_NF_TARGET_NETMAP is not set # CONFIG_IP_NF_TARGET_REDIRECT is not set CONFIG_IP_NF_MANGLE=y # CONFIG_IP_NF_TARGET_ECN is not set # CONFIG_IP_NF_TARGET_TTL is not set # CONFIG_IP_NF_RAW is not set # CONFIG_IP_NF_SECURITY is not set CONFIG_IP_NF_ARPTABLES=y CONFIG_NFT_COMPAT_ARP=y # CONFIG_IP_NF_ARPFILTER is not set # CONFIG_IP_NF_ARP_MANGLE is not set # end of IP: Netfilter Configuration # # IPv6: Netfilter Configuration # CONFIG_IP6_NF_IPTABLES_LEGACY=y CONFIG_NF_SOCKET_IPV6=y CONFIG_NF_TPROXY_IPV6=y CONFIG_NF_TABLES_IPV6=y CONFIG_NFT_REJECT_IPV6=y CONFIG_NFT_DUP_IPV6=y CONFIG_NFT_FIB_IPV6=y CONFIG_NF_DUP_IPV6=y CONFIG_NF_REJECT_IPV6=y CONFIG_NF_LOG_IPV6=y CONFIG_IP6_NF_IPTABLES=y # CONFIG_IP6_NF_MATCH_AH is not set # CONFIG_IP6_NF_MATCH_EUI64 is not set # CONFIG_IP6_NF_MATCH_FRAG is not set # CONFIG_IP6_NF_MATCH_OPTS is not set # CONFIG_IP6_NF_MATCH_HL is not set CONFIG_IP6_NF_MATCH_IPV6HEADER=y # CONFIG_IP6_NF_MATCH_MH is not set # CONFIG_IP6_NF_MATCH_RPFILTER is not set # CONFIG_IP6_NF_MATCH_RT is not set # CONFIG_IP6_NF_MATCH_SRH is not set # CONFIG_IP6_NF_TARGET_HL is not set CONFIG_IP6_NF_FILTER=y CONFIG_IP6_NF_TARGET_REJECT=y # CONFIG_IP6_NF_TARGET_SYNPROXY is not set CONFIG_IP6_NF_MANGLE=y # CONFIG_IP6_NF_RAW is not set # CONFIG_IP6_NF_SECURITY is not set CONFIG_IP6_NF_NAT=y # CONFIG_IP6_NF_TARGET_MASQUERADE is not set # CONFIG_IP6_NF_TARGET_NPT is not set # end of IPv6: Netfilter Configuration CONFIG_NF_DEFRAG_IPV6=y CONFIG_NF_TABLES_BRIDGE=y CONFIG_NFT_BRIDGE_META=y CONFIG_NFT_BRIDGE_REJECT=y # CONFIG_NF_CONNTRACK_BRIDGE is not set CONFIG_BRIDGE_NF_EBTABLES_LEGACY=y CONFIG_BRIDGE_NF_EBTABLES=y # CONFIG_BRIDGE_EBT_BROUTE is not set # CONFIG_BRIDGE_EBT_T_FILTER is not set CONFIG_BRIDGE_EBT_T_NAT=y # CONFIG_BRIDGE_EBT_802_3 is not set # CONFIG_BRIDGE_EBT_AMONG is not set # CONFIG_BRIDGE_EBT_ARP is not set # CONFIG_BRIDGE_EBT_IP is not set # CONFIG_BRIDGE_EBT_IP6 is not set # CONFIG_BRIDGE_EBT_LIMIT is not set # CONFIG_BRIDGE_EBT_MARK is not set # CONFIG_BRIDGE_EBT_PKTTYPE is not set # CONFIG_BRIDGE_EBT_STP is not set # CONFIG_BRIDGE_EBT_VLAN is not set # CONFIG_BRIDGE_EBT_ARPREPLY is not set CONFIG_BRIDGE_EBT_DNAT=y # CONFIG_BRIDGE_EBT_MARK_T is not set # CONFIG_BRIDGE_EBT_REDIRECT is not set CONFIG_BRIDGE_EBT_SNAT=y # CONFIG_BRIDGE_EBT_LOG is not set # CONFIG_BRIDGE_EBT_NFLOG is not set # CONFIG_IP_DCCP is not set # CONFIG_IP_SCTP is not set # CONFIG_RDS is not set # CONFIG_TIPC is not set # CONFIG_ATM is not set # CONFIG_L2TP is not set CONFIG_STP=y CONFIG_BRIDGE=y CONFIG_BRIDGE_IGMP_SNOOPING=y # CONFIG_BRIDGE_MRP is not set # CONFIG_BRIDGE_CFM is not set # CONFIG_NET_DSA is not set # CONFIG_VLAN_8021Q is not set CONFIG_LLC=y # CONFIG_LLC2 is not set # CONFIG_ATALK is not set # CONFIG_X25 is not set # CONFIG_LAPB is not set # CONFIG_PHONET is not set # CONFIG_6LOWPAN is not set # CONFIG_IEEE802154 is not set CONFIG_NET_SCHED=y # # Queueing/Scheduling # # CONFIG_NET_SCH_HTB is not set # CONFIG_NET_SCH_HFSC is not set # CONFIG_NET_SCH_PRIO is not set # CONFIG_NET_SCH_MULTIQ is not set # CONFIG_NET_SCH_RED is not set # CONFIG_NET_SCH_SFB is not set # CONFIG_NET_SCH_SFQ is not set # CONFIG_NET_SCH_TEQL is not set # CONFIG_NET_SCH_TBF is not set # CONFIG_NET_SCH_CBS is not set # CONFIG_NET_SCH_ETF is not set # CONFIG_NET_SCH_TAPRIO is not set # CONFIG_NET_SCH_GRED is not set # CONFIG_NET_SCH_NETEM is not set # CONFIG_NET_SCH_DRR is not set # CONFIG_NET_SCH_MQPRIO is not set # CONFIG_NET_SCH_SKBPRIO is not set # CONFIG_NET_SCH_CHOKE is not set # CONFIG_NET_SCH_QFQ is not set # CONFIG_NET_SCH_CODEL is not set # CONFIG_NET_SCH_FQ_CODEL is not set # CONFIG_NET_SCH_CAKE is not set # CONFIG_NET_SCH_FQ is not set # CONFIG_NET_SCH_HHF is not set # CONFIG_NET_SCH_PIE is not set # CONFIG_NET_SCH_INGRESS is not set # CONFIG_NET_SCH_PLUG is not set # CONFIG_NET_SCH_ETS is not set # CONFIG_NET_SCH_DEFAULT is not set # # Classification # CONFIG_NET_CLS=y # CONFIG_NET_CLS_BASIC is not set # CONFIG_NET_CLS_ROUTE4 is not set # CONFIG_NET_CLS_FW is not set # CONFIG_NET_CLS_U32 is not set # CONFIG_NET_CLS_FLOW is not set CONFIG_NET_CLS_CGROUP=y # CONFIG_NET_CLS_BPF is not set # CONFIG_NET_CLS_FLOWER is not set # CONFIG_NET_CLS_MATCHALL is not set CONFIG_NET_EMATCH=y CONFIG_NET_EMATCH_STACK=32 # CONFIG_NET_EMATCH_CMP is not set # CONFIG_NET_EMATCH_NBYTE is not set # CONFIG_NET_EMATCH_U32 is not set # CONFIG_NET_EMATCH_META is not set # CONFIG_NET_EMATCH_TEXT is not set # CONFIG_NET_EMATCH_IPT is not set CONFIG_NET_CLS_ACT=y # CONFIG_NET_ACT_POLICE is not set # CONFIG_NET_ACT_GACT is not set # CONFIG_NET_ACT_MIRRED is not set # CONFIG_NET_ACT_SAMPLE is not set CONFIG_NET_ACT_NAT=y # CONFIG_NET_ACT_PEDIT is not set # CONFIG_NET_ACT_SIMP is not set # CONFIG_NET_ACT_SKBEDIT is not set # CONFIG_NET_ACT_CSUM is not set # CONFIG_NET_ACT_MPLS is not set # CONFIG_NET_ACT_VLAN is not set # CONFIG_NET_ACT_BPF is not set # CONFIG_NET_ACT_CONNMARK is not set # CONFIG_NET_ACT_CTINFO is not set # CONFIG_NET_ACT_SKBMOD is not set # CONFIG_NET_ACT_IFE is not set # CONFIG_NET_ACT_TUNNEL_KEY is not set # CONFIG_NET_ACT_GATE is not set # CONFIG_NET_TC_SKB_EXT is not set CONFIG_NET_SCH_FIFO=y # CONFIG_DCB is not set CONFIG_DNS_RESOLVER=y # CONFIG_BATMAN_ADV is not set # CONFIG_OPENVSWITCH is not set # CONFIG_VSOCKETS is not set # CONFIG_NETLINK_DIAG is not set # CONFIG_MPLS is not set # CONFIG_NET_NSH is not set # CONFIG_HSR is not set # CONFIG_NET_SWITCHDEV is not set # CONFIG_NET_L3_MASTER_DEV is not set # CONFIG_QRTR is not set # CONFIG_NET_NCSI is not set CONFIG_PCPU_DEV_REFCNT=y CONFIG_MAX_SKB_FRAGS=17 CONFIG_RPS=y CONFIG_RFS_ACCEL=y CONFIG_SOCK_RX_QUEUE_MAPPING=y CONFIG_XPS=y CONFIG_CGROUP_NET_PRIO=y CONFIG_CGROUP_NET_CLASSID=y CONFIG_NET_RX_BUSY_POLL=y CONFIG_BQL=y CONFIG_NET_FLOW_LIMIT=y # # Network testing # # CONFIG_NET_PKTGEN is not set # CONFIG_NET_DROP_MONITOR is not set # end of Network testing # end of Networking options # CONFIG_HAMRADIO is not set # CONFIG_CAN is not set # CONFIG_BT is not set # CONFIG_AF_RXRPC is not set # CONFIG_AF_KCM is not set # CONFIG_MCTP is not set CONFIG_FIB_RULES=y CONFIG_WIRELESS=y CONFIG_CFG80211=y # CONFIG_NL80211_TESTMODE is not set # CONFIG_CFG80211_DEVELOPER_WARNINGS is not set # CONFIG_CFG80211_CERTIFICATION_ONUS is not set CONFIG_CFG80211_REQUIRE_SIGNED_REGDB=y CONFIG_CFG80211_USE_KERNEL_REGDB_KEYS=y CONFIG_CFG80211_DEFAULT_PS=y # CONFIG_CFG80211_DEBUGFS is not set CONFIG_CFG80211_CRDA_SUPPORT=y # CONFIG_CFG80211_WEXT is not set CONFIG_MAC80211=y CONFIG_MAC80211_HAS_RC=y CONFIG_MAC80211_RC_MINSTREL=y CONFIG_MAC80211_RC_DEFAULT_MINSTREL=y CONFIG_MAC80211_RC_DEFAULT="minstrel_ht" # CONFIG_MAC80211_MESH is not set CONFIG_MAC80211_LEDS=y # CONFIG_MAC80211_MESSAGE_TRACING is not set # CONFIG_MAC80211_DEBUG_MENU is not set CONFIG_MAC80211_STA_HASH_MAX_SIZE=0 CONFIG_RFKILL=y CONFIG_RFKILL_LEDS=y CONFIG_RFKILL_INPUT=y CONFIG_NET_9P=y CONFIG_NET_9P_FD=y CONFIG_NET_9P_VIRTIO=y # CONFIG_NET_9P_DEBUG is not set # CONFIG_CAIF is not set # CONFIG_CEPH_LIB is not set # CONFIG_NFC is not set # CONFIG_PSAMPLE is not set # CONFIG_NET_IFE is not set CONFIG_LWTUNNEL=y CONFIG_LWTUNNEL_BPF=y CONFIG_DST_CACHE=y CONFIG_GRO_CELLS=y CONFIG_NET_SELFTESTS=y CONFIG_FAILOVER=y CONFIG_ETHTOOL_NETLINK=y # # Device Drivers # CONFIG_HAVE_PCI=y CONFIG_GENERIC_PCI_IOMAP=y CONFIG_PCI=y CONFIG_PCI_DOMAINS=y CONFIG_PCIEPORTBUS=y # CONFIG_HOTPLUG_PCI_PCIE is not set # CONFIG_PCIEAER is not set CONFIG_PCIEASPM=y CONFIG_PCIEASPM_DEFAULT=y # CONFIG_PCIEASPM_POWERSAVE is not set # CONFIG_PCIEASPM_POWER_SUPERSAVE is not set # CONFIG_PCIEASPM_PERFORMANCE is not set CONFIG_PCIE_PME=y # CONFIG_PCIE_PTM is not set CONFIG_PCI_MSI=y CONFIG_PCI_QUIRKS=y # CONFIG_PCI_DEBUG is not set # CONFIG_PCI_STUB is not set CONFIG_PCI_ATS=y # CONFIG_PCI_DOE is not set CONFIG_PCI_LOCKLESS_CONFIG=y # CONFIG_PCI_IOV is not set # CONFIG_PCI_NPEM is not set CONFIG_PCI_PRI=y CONFIG_PCI_PASID=y # CONFIG_PCIE_TPH is not set # CONFIG_PCI_P2PDMA is not set CONFIG_PCI_LABEL=y # CONFIG_PCIE_BUS_TUNE_OFF is not set CONFIG_PCIE_BUS_DEFAULT=y # CONFIG_PCIE_BUS_SAFE is not set # CONFIG_PCIE_BUS_PERFORMANCE is not set # CONFIG_PCIE_BUS_PEER2PEER is not set CONFIG_VGA_ARB=y CONFIG_VGA_ARB_MAX_GPUS=16 CONFIG_HOTPLUG_PCI=y # CONFIG_HOTPLUG_PCI_ACPI is not set # CONFIG_HOTPLUG_PCI_CPCI is not set # CONFIG_HOTPLUG_PCI_OCTEONEP is not set # CONFIG_HOTPLUG_PCI_SHPC is not set # # PCI controller drivers # # CONFIG_VMD is not set # # Cadence-based PCIe controllers # # end of Cadence-based PCIe controllers # # DesignWare-based PCIe controllers # # CONFIG_PCI_MESON is not set # CONFIG_PCIE_DW_PLAT_HOST is not set # end of DesignWare-based PCIe controllers # # Mobiveil-based PCIe controllers # # end of Mobiveil-based PCIe controllers # # PLDA-based PCIe controllers # # end of PLDA-based PCIe controllers # end of PCI controller drivers # # PCI Endpoint # # CONFIG_PCI_ENDPOINT is not set # end of PCI Endpoint # # PCI switch controller drivers # # CONFIG_PCI_SW_SWITCHTEC is not set # end of PCI switch controller drivers # CONFIG_PCI_PWRCTL_SLOT is not set # CONFIG_CXL_BUS is not set CONFIG_PCCARD=y CONFIG_PCMCIA=y CONFIG_PCMCIA_LOAD_CIS=y CONFIG_CARDBUS=y # # PC-card bridges # CONFIG_YENTA=y CONFIG_YENTA_O2=y CONFIG_YENTA_RICOH=y CONFIG_YENTA_TI=y CONFIG_YENTA_ENE_TUNE=y CONFIG_YENTA_TOSHIBA=y # CONFIG_PD6729 is not set # CONFIG_I82092 is not set CONFIG_PCCARD_NONSTATIC=y # CONFIG_RAPIDIO is not set # # Generic Driver Options # CONFIG_AUXILIARY_BUS=y # CONFIG_UEVENT_HELPER is not set CONFIG_DEVTMPFS=y CONFIG_DEVTMPFS_MOUNT=y # CONFIG_DEVTMPFS_SAFE is not set CONFIG_STANDALONE=y CONFIG_PREVENT_FIRMWARE_BUILD=y # # Firmware loader # CONFIG_FW_LOADER=y CONFIG_EXTRA_FIRMWARE="" # CONFIG_FW_LOADER_USER_HELPER is not set # CONFIG_FW_LOADER_COMPRESS is not set CONFIG_FW_CACHE=y # CONFIG_FW_UPLOAD is not set # end of Firmware loader CONFIG_ALLOW_DEV_COREDUMP=y # CONFIG_DEBUG_DRIVER is not set CONFIG_DEBUG_DEVRES=y # CONFIG_DEBUG_TEST_DRIVER_REMOVE is not set # CONFIG_TEST_ASYNC_DRIVER_PROBE is not set CONFIG_GENERIC_CPU_DEVICES=y CONFIG_GENERIC_CPU_AUTOPROBE=y CONFIG_GENERIC_CPU_VULNERABILITIES=y CONFIG_REGMAP=y CONFIG_DMA_SHARED_BUFFER=y # CONFIG_DMA_FENCE_TRACE is not set # CONFIG_FW_DEVLINK_SYNC_STATE_TIMEOUT is not set # end of Generic Driver Options # # Bus devices # # CONFIG_MHI_BUS is not set # CONFIG_MHI_BUS_EP is not set # end of Bus devices # # Cache Drivers # # end of Cache Drivers CONFIG_CONNECTOR=y CONFIG_PROC_EVENTS=y # # Firmware Drivers # # # ARM System Control and Management Interface Protocol # # end of ARM System Control and Management Interface Protocol # CONFIG_EDD is not set CONFIG_FIRMWARE_MEMMAP=y CONFIG_DMIID=y # CONFIG_DMI_SYSFS is not set CONFIG_DMI_SCAN_MACHINE_NON_EFI_FALLBACK=y # CONFIG_ISCSI_IBFT is not set # CONFIG_FW_CFG_SYSFS is not set # CONFIG_SYSFB_SIMPLEFB is not set # CONFIG_GOOGLE_FIRMWARE is not set # # EFI (Extensible Firmware Interface) Support # CONFIG_EFI_ESRT=y CONFIG_EFI_DXE_MEM_ATTRIBUTES=y CONFIG_EFI_RUNTIME_WRAPPERS=y # CONFIG_EFI_BOOTLOADER_CONTROL is not set # CONFIG_EFI_CAPSULE_LOADER is not set # CONFIG_EFI_TEST is not set # CONFIG_APPLE_PROPERTIES is not set # CONFIG_RESET_ATTACK_MITIGATION is not set # CONFIG_EFI_RCI2_TABLE is not set # CONFIG_EFI_DISABLE_PCI_DMA is not set CONFIG_EFI_EARLYCON=y CONFIG_EFI_CUSTOM_SSDT_OVERLAYS=y # CONFIG_EFI_DISABLE_RUNTIME is not set # CONFIG_EFI_COCO_SECRET is not set CONFIG_UNACCEPTED_MEMORY=y # end of EFI (Extensible Firmware Interface) Support # # Qualcomm firmware drivers # # end of Qualcomm firmware drivers # # Tegra firmware driver # # end of Tegra firmware driver # end of Firmware Drivers # CONFIG_FWCTL is not set # CONFIG_GNSS is not set # CONFIG_MTD is not set # CONFIG_OF is not set CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y # CONFIG_PARPORT is not set CONFIG_PNP=y CONFIG_PNP_DEBUG_MESSAGES=y # # Protocols # CONFIG_PNPACPI=y CONFIG_BLK_DEV=y # CONFIG_BLK_DEV_NULL_BLK is not set # CONFIG_BLK_DEV_FD is not set CONFIG_CDROM=y # CONFIG_BLK_DEV_PCIESSD_MTIP32XX is not set # CONFIG_ZRAM is not set CONFIG_BLK_DEV_LOOP=y CONFIG_BLK_DEV_LOOP_MIN_COUNT=8 # CONFIG_BLK_DEV_DRBD is not set # CONFIG_BLK_DEV_NBD is not set # CONFIG_BLK_DEV_RAM is not set # CONFIG_CDROM_PKTCDVD is not set # CONFIG_ATA_OVER_ETH is not set CONFIG_VIRTIO_BLK=y # CONFIG_BLK_DEV_RBD is not set # CONFIG_BLK_DEV_UBLK is not set # # NVME Support # # CONFIG_BLK_DEV_NVME is not set # CONFIG_NVME_FC is not set # CONFIG_NVME_TCP is not set # CONFIG_NVME_TARGET is not set # end of NVME Support # # Misc devices # # CONFIG_AD525X_DPOT is not set # CONFIG_DUMMY_IRQ is not set # CONFIG_IBM_ASM is not set # CONFIG_PHANTOM is not set # CONFIG_TIFM_CORE is not set # CONFIG_ICS932S401 is not set # CONFIG_ENCLOSURE_SERVICES is not set # CONFIG_HP_ILO is not set # CONFIG_APDS9802ALS is not set # CONFIG_ISL29003 is not set # CONFIG_ISL29020 is not set # CONFIG_SENSORS_TSL2550 is not set # CONFIG_SENSORS_BH1770 is not set # CONFIG_SENSORS_APDS990X is not set # CONFIG_HMC6352 is not set # CONFIG_DS1682 is not set # CONFIG_SRAM is not set # CONFIG_DW_XDATA_PCIE is not set # CONFIG_PCI_ENDPOINT_TEST is not set # CONFIG_XILINX_SDFEC is not set # CONFIG_NTSYNC is not set # CONFIG_NSM is not set # CONFIG_C2PORT is not set # # EEPROM support # # CONFIG_EEPROM_AT24 is not set # CONFIG_EEPROM_MAX6875 is not set CONFIG_EEPROM_93CX6=y # CONFIG_EEPROM_IDT_89HPESX is not set # CONFIG_EEPROM_EE1004 is not set # end of EEPROM support # CONFIG_CB710_CORE is not set # CONFIG_SENSORS_LIS3_I2C is not set # CONFIG_ALTERA_STAPL is not set # CONFIG_INTEL_MEI is not set # CONFIG_VMWARE_VMCI is not set # CONFIG_GENWQE is not set # CONFIG_ECHO is not set # CONFIG_BCM_VK is not set # CONFIG_MISC_ALCOR_PCI is not set # CONFIG_MISC_RTSX_PCI is not set # CONFIG_MISC_RTSX_USB is not set # CONFIG_UACCE is not set # CONFIG_PVPANIC is not set # CONFIG_KEBA_CP500 is not set # end of Misc devices # # SCSI device support # CONFIG_SCSI_MOD=y # CONFIG_RAID_ATTRS is not set CONFIG_SCSI_COMMON=y CONFIG_SCSI=y CONFIG_SCSI_DMA=y CONFIG_SCSI_PROC_FS=y # # SCSI support type (disk, tape, CD-ROM) # CONFIG_BLK_DEV_SD=y # CONFIG_CHR_DEV_ST is not set CONFIG_BLK_DEV_SR=y CONFIG_CHR_DEV_SG=y CONFIG_BLK_DEV_BSG=y # CONFIG_CHR_DEV_SCH is not set CONFIG_SCSI_CONSTANTS=y # CONFIG_SCSI_LOGGING is not set # CONFIG_SCSI_SCAN_ASYNC is not set # # SCSI Transports # CONFIG_SCSI_SPI_ATTRS=y # CONFIG_SCSI_FC_ATTRS is not set # CONFIG_SCSI_ISCSI_ATTRS is not set # CONFIG_SCSI_SAS_ATTRS is not set # CONFIG_SCSI_SAS_LIBSAS is not set # CONFIG_SCSI_SRP_ATTRS is not set # end of SCSI Transports CONFIG_SCSI_LOWLEVEL=y # CONFIG_ISCSI_TCP is not set # CONFIG_ISCSI_BOOT_SYSFS is not set # CONFIG_SCSI_CXGB3_ISCSI is not set # CONFIG_SCSI_CXGB4_ISCSI is not set # CONFIG_SCSI_BNX2_ISCSI is not set # CONFIG_BE2ISCSI is not set # CONFIG_BLK_DEV_3W_XXXX_RAID is not set # CONFIG_SCSI_HPSA is not set # CONFIG_SCSI_3W_9XXX is not set # CONFIG_SCSI_3W_SAS is not set # CONFIG_SCSI_ACARD is not set # CONFIG_SCSI_AACRAID is not set # CONFIG_SCSI_AIC7XXX is not set # CONFIG_SCSI_AIC79XX is not set # CONFIG_SCSI_AIC94XX is not set # CONFIG_SCSI_MVSAS is not set # CONFIG_SCSI_MVUMI is not set # CONFIG_SCSI_ADVANSYS is not set # CONFIG_SCSI_ARCMSR is not set # CONFIG_SCSI_ESAS2R is not set # CONFIG_MEGARAID_NEWGEN is not set # CONFIG_MEGARAID_LEGACY is not set # CONFIG_MEGARAID_SAS is not set # CONFIG_SCSI_MPT3SAS is not set # CONFIG_SCSI_MPT2SAS is not set # CONFIG_SCSI_MPI3MR is not set # CONFIG_SCSI_SMARTPQI is not set # CONFIG_SCSI_HPTIOP is not set # CONFIG_SCSI_BUSLOGIC is not set # CONFIG_SCSI_MYRB is not set # CONFIG_SCSI_MYRS is not set # CONFIG_VMWARE_PVSCSI is not set # CONFIG_SCSI_SNIC is not set # CONFIG_SCSI_DMX3191D is not set # CONFIG_SCSI_FDOMAIN_PCI is not set # CONFIG_SCSI_ISCI is not set # CONFIG_SCSI_IPS is not set # CONFIG_SCSI_INITIO is not set # CONFIG_SCSI_INIA100 is not set # CONFIG_SCSI_STEX is not set # CONFIG_SCSI_SYM53C8XX_2 is not set # CONFIG_SCSI_IPR is not set # CONFIG_SCSI_QLOGIC_1280 is not set # CONFIG_SCSI_QLA_ISCSI is not set # CONFIG_SCSI_DC395x is not set # CONFIG_SCSI_AM53C974 is not set # CONFIG_SCSI_WD719X is not set # CONFIG_SCSI_DEBUG is not set # CONFIG_SCSI_PMCRAID is not set # CONFIG_SCSI_PM8001 is not set CONFIG_SCSI_VIRTIO=y # CONFIG_SCSI_LOWLEVEL_PCMCIA is not set # CONFIG_SCSI_DH is not set # end of SCSI device support CONFIG_ATA=y CONFIG_SATA_HOST=y CONFIG_PATA_TIMINGS=y CONFIG_ATA_VERBOSE_ERROR=y CONFIG_ATA_FORCE=y CONFIG_ATA_ACPI=y # CONFIG_SATA_ZPODD is not set CONFIG_SATA_PMP=y # # Controllers with non-SFF native interface # CONFIG_SATA_AHCI=y CONFIG_SATA_MOBILE_LPM_POLICY=0 # CONFIG_SATA_AHCI_PLATFORM is not set # CONFIG_AHCI_DWC is not set # CONFIG_SATA_INIC162X is not set # CONFIG_SATA_ACARD_AHCI is not set # CONFIG_SATA_SIL24 is not set CONFIG_ATA_SFF=y # # SFF controllers with custom DMA interface # # CONFIG_PDC_ADMA is not set # CONFIG_SATA_QSTOR is not set # CONFIG_SATA_SX4 is not set CONFIG_ATA_BMDMA=y # # SATA SFF controllers with BMDMA # CONFIG_ATA_PIIX=y # CONFIG_SATA_DWC is not set # CONFIG_SATA_MV is not set # CONFIG_SATA_NV is not set # CONFIG_SATA_PROMISE is not set # CONFIG_SATA_SIL is not set # CONFIG_SATA_SIS is not set # CONFIG_SATA_SVW is not set # CONFIG_SATA_ULI is not set # CONFIG_SATA_VIA is not set # CONFIG_SATA_VITESSE is not set # # PATA SFF controllers with BMDMA # # CONFIG_PATA_ALI is not set CONFIG_PATA_AMD=y # CONFIG_PATA_ARTOP is not set # CONFIG_PATA_ATIIXP is not set # CONFIG_PATA_ATP867X is not set # CONFIG_PATA_CMD64X is not set # CONFIG_PATA_CYPRESS is not set # CONFIG_PATA_EFAR is not set # CONFIG_PATA_HPT366 is not set # CONFIG_PATA_HPT37X is not set # CONFIG_PATA_HPT3X2N is not set # CONFIG_PATA_HPT3X3 is not set # CONFIG_PATA_IT8213 is not set # CONFIG_PATA_IT821X is not set # CONFIG_PATA_JMICRON is not set # CONFIG_PATA_MARVELL is not set # CONFIG_PATA_NETCELL is not set # CONFIG_PATA_NINJA32 is not set # CONFIG_PATA_NS87415 is not set CONFIG_PATA_OLDPIIX=y # CONFIG_PATA_OPTIDMA is not set # CONFIG_PATA_PDC2027X is not set # CONFIG_PATA_PDC_OLD is not set # CONFIG_PATA_RADISYS is not set # CONFIG_PATA_RDC is not set CONFIG_PATA_SCH=y # CONFIG_PATA_SERVERWORKS is not set # CONFIG_PATA_SIL680 is not set # CONFIG_PATA_SIS is not set # CONFIG_PATA_TOSHIBA is not set # CONFIG_PATA_TRIFLEX is not set # CONFIG_PATA_VIA is not set # CONFIG_PATA_WINBOND is not set # # PIO-only SFF controllers # # CONFIG_PATA_CMD640_PCI is not set # CONFIG_PATA_MPIIX is not set # CONFIG_PATA_NS87410 is not set # CONFIG_PATA_OPTI is not set # CONFIG_PATA_PCMCIA is not set # CONFIG_PATA_RZ1000 is not set # # Generic fallback / legacy drivers # # CONFIG_PATA_ACPI is not set # CONFIG_ATA_GENERIC is not set # CONFIG_PATA_LEGACY is not set CONFIG_MD=y CONFIG_BLK_DEV_MD=y CONFIG_MD_AUTODETECT=y CONFIG_MD_BITMAP_FILE=y # CONFIG_MD_LINEAR is not set # CONFIG_MD_RAID0 is not set # CONFIG_MD_RAID1 is not set # CONFIG_MD_RAID10 is not set # CONFIG_MD_RAID456 is not set # CONFIG_BCACHE is not set CONFIG_BLK_DEV_DM_BUILTIN=y CONFIG_BLK_DEV_DM=y # CONFIG_DM_DEBUG is not set # CONFIG_DM_UNSTRIPED is not set # CONFIG_DM_CRYPT is not set # CONFIG_DM_SNAPSHOT is not set # CONFIG_DM_THIN_PROVISIONING is not set # CONFIG_DM_CACHE is not set # CONFIG_DM_WRITECACHE is not set # CONFIG_DM_EBS is not set # CONFIG_DM_ERA is not set # CONFIG_DM_CLONE is not set CONFIG_DM_MIRROR=y # CONFIG_DM_LOG_USERSPACE is not set # CONFIG_DM_RAID is not set CONFIG_DM_ZERO=y # CONFIG_DM_MULTIPATH is not set # CONFIG_DM_DELAY is not set # CONFIG_DM_DUST is not set # CONFIG_DM_INIT is not set # CONFIG_DM_UEVENT is not set # CONFIG_DM_FLAKEY is not set # CONFIG_DM_VERITY is not set # CONFIG_DM_SWITCH is not set # CONFIG_DM_LOG_WRITES is not set # CONFIG_DM_INTEGRITY is not set # CONFIG_DM_AUDIT is not set # CONFIG_DM_VDO is not set # CONFIG_TARGET_CORE is not set # CONFIG_FUSION is not set # # IEEE 1394 (FireWire) support # # CONFIG_FIREWIRE is not set # CONFIG_FIREWIRE_NOSY is not set # end of IEEE 1394 (FireWire) support CONFIG_MACINTOSH_DRIVERS=y CONFIG_MAC_EMUMOUSEBTN=y CONFIG_NETDEVICES=y CONFIG_MII=y CONFIG_NET_CORE=y # CONFIG_BONDING is not set # CONFIG_DUMMY is not set # CONFIG_WIREGUARD is not set # CONFIG_EQUALIZER is not set # CONFIG_NET_FC is not set # CONFIG_IFB is not set # CONFIG_NET_TEAM is not set # CONFIG_MACVLAN is not set # CONFIG_IPVLAN is not set # CONFIG_VXLAN is not set # CONFIG_GENEVE is not set # CONFIG_BAREUDP is not set # CONFIG_GTP is not set # CONFIG_PFCP is not set # CONFIG_AMT is not set # CONFIG_MACSEC is not set CONFIG_NETCONSOLE=y # CONFIG_NETCONSOLE_DYNAMIC is not set # CONFIG_NETCONSOLE_EXTENDED_LOG is not set CONFIG_NETPOLL=y CONFIG_NET_POLL_CONTROLLER=y CONFIG_TUN=y # CONFIG_TUN_VNET_CROSS_LE is not set # CONFIG_VETH is not set CONFIG_VIRTIO_NET=y # CONFIG_NLMON is not set # CONFIG_ARCNET is not set CONFIG_ETHERNET=y CONFIG_NET_VENDOR_3COM=y # CONFIG_PCMCIA_3C574 is not set # CONFIG_PCMCIA_3C589 is not set # CONFIG_VORTEX is not set # CONFIG_TYPHOON is not set CONFIG_NET_VENDOR_ADAPTEC=y # CONFIG_ADAPTEC_STARFIRE is not set CONFIG_NET_VENDOR_AGERE=y # CONFIG_ET131X is not set CONFIG_NET_VENDOR_ALACRITECH=y # CONFIG_SLICOSS is not set CONFIG_NET_VENDOR_ALTEON=y # CONFIG_ACENIC is not set # CONFIG_ALTERA_TSE is not set CONFIG_NET_VENDOR_AMAZON=y # CONFIG_ENA_ETHERNET is not set CONFIG_NET_VENDOR_AMD=y # CONFIG_AMD8111_ETH is not set # CONFIG_PCNET32 is not set # CONFIG_PCMCIA_NMCLAN is not set # CONFIG_AMD_XGBE is not set # CONFIG_PDS_CORE is not set CONFIG_NET_VENDOR_AQUANTIA=y # CONFIG_AQTION is not set CONFIG_NET_VENDOR_ARC=y CONFIG_NET_VENDOR_ASIX=y CONFIG_NET_VENDOR_ATHEROS=y # CONFIG_ATL2 is not set # CONFIG_ATL1 is not set # CONFIG_ATL1E is not set # CONFIG_ATL1C is not set # CONFIG_ALX is not set # CONFIG_CX_ECAT is not set CONFIG_NET_VENDOR_BROADCOM=y # CONFIG_B44 is not set # CONFIG_BCMGENET is not set # CONFIG_BNX2 is not set # CONFIG_CNIC is not set CONFIG_TIGON3=y CONFIG_TIGON3_HWMON=y # CONFIG_BNX2X is not set # CONFIG_SYSTEMPORT is not set # CONFIG_BNXT is not set CONFIG_NET_VENDOR_CADENCE=y # CONFIG_MACB is not set CONFIG_NET_VENDOR_CAVIUM=y # CONFIG_THUNDER_NIC_PF is not set # CONFIG_THUNDER_NIC_VF is not set # CONFIG_THUNDER_NIC_BGX is not set # CONFIG_THUNDER_NIC_RGX is not set # CONFIG_CAVIUM_PTP is not set # CONFIG_LIQUIDIO is not set # CONFIG_LIQUIDIO_VF is not set CONFIG_NET_VENDOR_CHELSIO=y # CONFIG_CHELSIO_T1 is not set # CONFIG_CHELSIO_T3 is not set # CONFIG_CHELSIO_T4 is not set # CONFIG_CHELSIO_T4VF is not set CONFIG_NET_VENDOR_CISCO=y # CONFIG_ENIC is not set CONFIG_NET_VENDOR_CORTINA=y CONFIG_NET_VENDOR_DAVICOM=y # CONFIG_DNET is not set CONFIG_NET_VENDOR_DEC=y CONFIG_NET_TULIP=y # CONFIG_DE2104X is not set # CONFIG_TULIP is not set # CONFIG_WINBOND_840 is not set # CONFIG_DM9102 is not set # CONFIG_ULI526X is not set # CONFIG_PCMCIA_XIRCOM is not set CONFIG_NET_VENDOR_DLINK=y # CONFIG_DL2K is not set CONFIG_NET_VENDOR_EMULEX=y # CONFIG_BE2NET is not set CONFIG_NET_VENDOR_ENGLEDER=y # CONFIG_TSNEP is not set CONFIG_NET_VENDOR_EZCHIP=y CONFIG_NET_VENDOR_FUJITSU=y # CONFIG_PCMCIA_FMVJ18X is not set CONFIG_NET_VENDOR_FUNGIBLE=y # CONFIG_FUN_ETH is not set CONFIG_NET_VENDOR_GOOGLE=y # CONFIG_GVE is not set CONFIG_NET_VENDOR_HISILICON=y # CONFIG_HIBMCGE is not set CONFIG_NET_VENDOR_HUAWEI=y # CONFIG_HINIC is not set CONFIG_NET_VENDOR_I825XX=y CONFIG_NET_VENDOR_INTEL=y CONFIG_E100=y CONFIG_E1000=y CONFIG_E1000E=y CONFIG_E1000E_HWTS=y # CONFIG_IGB is not set # CONFIG_IGBVF is not set # CONFIG_IXGBE is not set # CONFIG_IXGBEVF is not set # CONFIG_I40E is not set # CONFIG_I40EVF is not set # CONFIG_ICE is not set # CONFIG_FM10K is not set # CONFIG_IGC is not set # CONFIG_IDPF is not set # CONFIG_JME is not set CONFIG_NET_VENDOR_LITEX=y CONFIG_NET_VENDOR_MARVELL=y # CONFIG_MVMDIO is not set # CONFIG_SKGE is not set CONFIG_SKY2=y # CONFIG_SKY2_DEBUG is not set # CONFIG_OCTEON_EP is not set # CONFIG_OCTEON_EP_VF is not set CONFIG_NET_VENDOR_MELLANOX=y # CONFIG_MLX4_EN is not set # CONFIG_MLX5_CORE is not set # CONFIG_MLXSW_CORE is not set # CONFIG_MLXFW is not set CONFIG_NET_VENDOR_META=y # CONFIG_FBNIC is not set CONFIG_NET_VENDOR_MICREL=y # CONFIG_KS8842 is not set # CONFIG_KS8851_MLL is not set # CONFIG_KSZ884X_PCI is not set CONFIG_NET_VENDOR_MICROCHIP=y # CONFIG_LAN743X is not set # CONFIG_VCAP is not set CONFIG_NET_VENDOR_MICROSEMI=y CONFIG_NET_VENDOR_MICROSOFT=y CONFIG_NET_VENDOR_MYRI=y # CONFIG_MYRI10GE is not set # CONFIG_FEALNX is not set CONFIG_NET_VENDOR_NI=y # CONFIG_NI_XGE_MANAGEMENT_ENET is not set CONFIG_NET_VENDOR_NATSEMI=y # CONFIG_NATSEMI is not set # CONFIG_NS83820 is not set CONFIG_NET_VENDOR_NETERION=y # CONFIG_S2IO is not set CONFIG_NET_VENDOR_NETRONOME=y # CONFIG_NFP is not set CONFIG_NET_VENDOR_8390=y # CONFIG_PCMCIA_AXNET is not set # CONFIG_NE2K_PCI is not set # CONFIG_PCMCIA_PCNET is not set CONFIG_NET_VENDOR_NVIDIA=y CONFIG_FORCEDETH=y CONFIG_NET_VENDOR_OKI=y # CONFIG_ETHOC is not set CONFIG_NET_VENDOR_PACKET_ENGINES=y # CONFIG_HAMACHI is not set # CONFIG_YELLOWFIN is not set CONFIG_NET_VENDOR_PENSANDO=y # CONFIG_IONIC is not set CONFIG_NET_VENDOR_QLOGIC=y # CONFIG_QLA3XXX is not set # CONFIG_QLCNIC is not set # CONFIG_NETXEN_NIC is not set # CONFIG_QED is not set CONFIG_NET_VENDOR_BROCADE=y # CONFIG_BNA is not set CONFIG_NET_VENDOR_QUALCOMM=y # CONFIG_QCOM_EMAC is not set # CONFIG_RMNET is not set CONFIG_NET_VENDOR_RDC=y # CONFIG_R6040 is not set CONFIG_NET_VENDOR_REALTEK=y # CONFIG_8139CP is not set CONFIG_8139TOO=y CONFIG_8139TOO_PIO=y # CONFIG_8139TOO_TUNE_TWISTER is not set # CONFIG_8139TOO_8129 is not set # CONFIG_8139_OLD_RX_RESET is not set CONFIG_R8169=y # CONFIG_RTASE is not set CONFIG_NET_VENDOR_RENESAS=y CONFIG_NET_VENDOR_ROCKER=y CONFIG_NET_VENDOR_SAMSUNG=y # CONFIG_SXGBE_ETH is not set CONFIG_NET_VENDOR_SEEQ=y CONFIG_NET_VENDOR_SILAN=y # CONFIG_SC92031 is not set CONFIG_NET_VENDOR_SIS=y # CONFIG_SIS900 is not set # CONFIG_SIS190 is not set CONFIG_NET_VENDOR_SOLARFLARE=y # CONFIG_SFC is not set # CONFIG_SFC_FALCON is not set # CONFIG_SFC_SIENA is not set CONFIG_NET_VENDOR_SMSC=y # CONFIG_PCMCIA_SMC91C92 is not set # CONFIG_EPIC100 is not set # CONFIG_SMSC911X is not set # CONFIG_SMSC9420 is not set CONFIG_NET_VENDOR_SOCIONEXT=y CONFIG_NET_VENDOR_STMICRO=y # CONFIG_STMMAC_ETH is not set CONFIG_NET_VENDOR_SUN=y # CONFIG_HAPPYMEAL is not set # CONFIG_SUNGEM is not set # CONFIG_CASSINI is not set # CONFIG_NIU is not set CONFIG_NET_VENDOR_SYNOPSYS=y # CONFIG_DWC_XLGMAC is not set CONFIG_NET_VENDOR_TEHUTI=y # CONFIG_TEHUTI is not set # CONFIG_TEHUTI_TN40 is not set CONFIG_NET_VENDOR_TI=y # CONFIG_TI_CPSW_PHY_SEL is not set # CONFIG_TLAN is not set CONFIG_NET_VENDOR_VERTEXCOM=y CONFIG_NET_VENDOR_VIA=y # CONFIG_VIA_RHINE is not set # CONFIG_VIA_VELOCITY is not set CONFIG_NET_VENDOR_WANGXUN=y # CONFIG_NGBE is not set CONFIG_NET_VENDOR_WIZNET=y # CONFIG_WIZNET_W5100 is not set # CONFIG_WIZNET_W5300 is not set CONFIG_NET_VENDOR_XILINX=y # CONFIG_XILINX_EMACLITE is not set # CONFIG_XILINX_LL_TEMAC is not set CONFIG_NET_VENDOR_XIRCOM=y # CONFIG_PCMCIA_XIRC2PS is not set # CONFIG_FDDI is not set # CONFIG_HIPPI is not set CONFIG_PHYLIB=y CONFIG_SWPHY=y # CONFIG_LED_TRIGGER_PHY is not set CONFIG_FIXED_PHY=y # # MII PHY device drivers # # CONFIG_AIR_EN8811H_PHY is not set # CONFIG_AMD_PHY is not set # CONFIG_ADIN_PHY is not set # CONFIG_ADIN1100_PHY is not set # CONFIG_AQUANTIA_PHY is not set # CONFIG_AX88796B_PHY is not set # CONFIG_BROADCOM_PHY is not set # CONFIG_BCM54140_PHY is not set # CONFIG_BCM7XXX_PHY is not set # CONFIG_BCM84881_PHY is not set # CONFIG_BCM87XX_PHY is not set # CONFIG_CICADA_PHY is not set # CONFIG_CORTINA_PHY is not set # CONFIG_DAVICOM_PHY is not set # CONFIG_ICPLUS_PHY is not set # CONFIG_LXT_PHY is not set # CONFIG_INTEL_XWAY_PHY is not set # CONFIG_LSI_ET1011C_PHY is not set # CONFIG_MARVELL_PHY is not set # CONFIG_MARVELL_10G_PHY is not set # CONFIG_MARVELL_88Q2XXX_PHY is not set # CONFIG_MARVELL_88X2222_PHY is not set # CONFIG_MAXLINEAR_GPHY is not set # CONFIG_MEDIATEK_GE_PHY is not set # CONFIG_MICREL_PHY is not set # CONFIG_MICROCHIP_T1S_PHY is not set # CONFIG_MICROCHIP_PHY is not set # CONFIG_MICROCHIP_T1_PHY is not set # CONFIG_MICROSEMI_PHY is not set # CONFIG_MOTORCOMM_PHY is not set CONFIG_NATIONAL_PHY=y # CONFIG_NXP_CBTX_PHY is not set # CONFIG_NXP_C45_TJA11XX_PHY is not set # CONFIG_NXP_TJA11XX_PHY is not set # CONFIG_NCN26000_PHY is not set # CONFIG_QCA83XX_PHY is not set # CONFIG_QCA808X_PHY is not set # CONFIG_QSEMI_PHY is not set CONFIG_REALTEK_PHY=y # CONFIG_REALTEK_PHY_HWMON is not set # CONFIG_RENESAS_PHY is not set # CONFIG_ROCKCHIP_PHY is not set # CONFIG_SMSC_PHY is not set # CONFIG_STE10XP is not set # CONFIG_TERANETICS_PHY is not set # CONFIG_DP83822_PHY is not set # CONFIG_DP83TC811_PHY is not set # CONFIG_DP83848_PHY is not set # CONFIG_DP83867_PHY is not set # CONFIG_DP83869_PHY is not set # CONFIG_DP83TD510_PHY is not set # CONFIG_DP83TG720_PHY is not set # CONFIG_VITESSE_PHY is not set # CONFIG_XILINX_GMII2RGMII is not set CONFIG_MDIO_DEVICE=y CONFIG_MDIO_BUS=y CONFIG_FWNODE_MDIO=y CONFIG_ACPI_MDIO=y CONFIG_MDIO_DEVRES=y # CONFIG_MDIO_BITBANG is not set # CONFIG_MDIO_BCM_UNIMAC is not set # CONFIG_MDIO_MVUSB is not set # CONFIG_MDIO_THUNDER is not set # # MDIO Multiplexers # # # PCS device drivers # # CONFIG_PCS_XPCS is not set # end of PCS device drivers # CONFIG_PPP is not set # CONFIG_SLIP is not set CONFIG_USB_NET_DRIVERS=y # CONFIG_USB_CATC is not set # CONFIG_USB_KAWETH is not set # CONFIG_USB_PEGASUS is not set # CONFIG_USB_RTL8150 is not set # CONFIG_USB_RTL8152 is not set # CONFIG_USB_LAN78XX is not set # CONFIG_USB_USBNET is not set # CONFIG_USB_HSO is not set # CONFIG_USB_IPHETH is not set CONFIG_WLAN=y CONFIG_WLAN_VENDOR_ADMTEK=y # CONFIG_ADM8211 is not set CONFIG_WLAN_VENDOR_ATH=y # CONFIG_ATH_DEBUG is not set # CONFIG_ATH5K is not set # CONFIG_ATH5K_PCI is not set # CONFIG_ATH9K is not set # CONFIG_ATH9K_HTC is not set # CONFIG_CARL9170 is not set # CONFIG_ATH6KL is not set # CONFIG_AR5523 is not set # CONFIG_WIL6210 is not set # CONFIG_ATH10K is not set # CONFIG_WCN36XX is not set # CONFIG_ATH11K is not set # CONFIG_ATH12K is not set CONFIG_WLAN_VENDOR_ATMEL=y # CONFIG_AT76C50X_USB is not set CONFIG_WLAN_VENDOR_BROADCOM=y # CONFIG_B43 is not set # CONFIG_B43LEGACY is not set # CONFIG_BRCMSMAC is not set # CONFIG_BRCMFMAC is not set CONFIG_WLAN_VENDOR_INTEL=y # CONFIG_IPW2100 is not set # CONFIG_IPW2200 is not set # CONFIG_IWL4965 is not set # CONFIG_IWL3945 is not set # CONFIG_IWLWIFI is not set CONFIG_WLAN_VENDOR_INTERSIL=y # CONFIG_P54_COMMON is not set CONFIG_WLAN_VENDOR_MARVELL=y # CONFIG_LIBERTAS is not set # CONFIG_LIBERTAS_THINFIRM is not set # CONFIG_MWIFIEX is not set # CONFIG_MWL8K is not set CONFIG_WLAN_VENDOR_MEDIATEK=y # CONFIG_MT7601U is not set # CONFIG_MT76x0U is not set # CONFIG_MT76x0E is not set # CONFIG_MT76x2E is not set # CONFIG_MT76x2U is not set # CONFIG_MT7603E is not set # CONFIG_MT7615E is not set # CONFIG_MT7663U is not set # CONFIG_MT7915E is not set # CONFIG_MT7921E is not set # CONFIG_MT7921U is not set # CONFIG_MT7996E is not set # CONFIG_MT7925E is not set # CONFIG_MT7925U is not set CONFIG_WLAN_VENDOR_MICROCHIP=y CONFIG_WLAN_VENDOR_PURELIFI=y # CONFIG_PLFXLC is not set CONFIG_WLAN_VENDOR_RALINK=y # CONFIG_RT2X00 is not set CONFIG_WLAN_VENDOR_REALTEK=y # CONFIG_RTL8180 is not set # CONFIG_RTL8187 is not set CONFIG_RTL_CARDS=y # CONFIG_RTL8192CE is not set # CONFIG_RTL8192SE is not set # CONFIG_RTL8192DE is not set # CONFIG_RTL8723AE is not set # CONFIG_RTL8723BE is not set # CONFIG_RTL8188EE is not set # CONFIG_RTL8192EE is not set # CONFIG_RTL8821AE is not set # CONFIG_RTL8192CU is not set # CONFIG_RTL8192DU is not set # CONFIG_RTL8XXXU is not set # CONFIG_RTW88 is not set # CONFIG_RTW89 is not set CONFIG_WLAN_VENDOR_RSI=y # CONFIG_RSI_91X is not set CONFIG_WLAN_VENDOR_SILABS=y CONFIG_WLAN_VENDOR_ST=y # CONFIG_CW1200 is not set CONFIG_WLAN_VENDOR_TI=y # CONFIG_WL1251 is not set # CONFIG_WL12XX is not set # CONFIG_WL18XX is not set # CONFIG_WLCORE is not set CONFIG_WLAN_VENDOR_ZYDAS=y # CONFIG_ZD1211RW is not set CONFIG_WLAN_VENDOR_QUANTENNA=y # CONFIG_QTNFMAC_PCIE is not set # CONFIG_MAC80211_HWSIM is not set # CONFIG_VIRT_WIFI is not set # CONFIG_WAN is not set # # Wireless WAN # # CONFIG_WWAN is not set # end of Wireless WAN # CONFIG_VMXNET3 is not set # CONFIG_FUJITSU_ES is not set # CONFIG_NETDEVSIM is not set CONFIG_NET_FAILOVER=y # CONFIG_ISDN is not set # # Input device support # CONFIG_INPUT=y CONFIG_INPUT_LEDS=y CONFIG_INPUT_FF_MEMLESS=y CONFIG_INPUT_SPARSEKMAP=y # CONFIG_INPUT_MATRIXKMAP is not set CONFIG_INPUT_VIVALDIFMAP=y # # Userland interfaces # # CONFIG_INPUT_MOUSEDEV is not set # CONFIG_INPUT_JOYDEV is not set CONFIG_INPUT_EVDEV=y # # Input Device Drivers # CONFIG_INPUT_KEYBOARD=y # CONFIG_KEYBOARD_ADP5588 is not set # CONFIG_KEYBOARD_ADP5589 is not set CONFIG_KEYBOARD_ATKBD=y # CONFIG_KEYBOARD_QT1050 is not set # CONFIG_KEYBOARD_QT1070 is not set # CONFIG_KEYBOARD_QT2160 is not set # CONFIG_KEYBOARD_DLINK_DIR685 is not set # CONFIG_KEYBOARD_LKKBD is not set # CONFIG_KEYBOARD_TCA6416 is not set # CONFIG_KEYBOARD_TCA8418 is not set # CONFIG_KEYBOARD_LM8323 is not set # CONFIG_KEYBOARD_LM8333 is not set # CONFIG_KEYBOARD_MAX7359 is not set # CONFIG_KEYBOARD_MPR121 is not set # CONFIG_KEYBOARD_NEWTON is not set # CONFIG_KEYBOARD_OPENCORES is not set # CONFIG_KEYBOARD_SAMSUNG is not set # CONFIG_KEYBOARD_STOWAWAY is not set # CONFIG_KEYBOARD_SUNKBD is not set # CONFIG_KEYBOARD_TM2_TOUCHKEY is not set # CONFIG_KEYBOARD_XTKBD is not set # CONFIG_KEYBOARD_CYPRESS_SF is not set CONFIG_INPUT_MOUSE=y CONFIG_MOUSE_PS2=y CONFIG_MOUSE_PS2_ALPS=y CONFIG_MOUSE_PS2_BYD=y CONFIG_MOUSE_PS2_LOGIPS2PP=y CONFIG_MOUSE_PS2_SYNAPTICS=y CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS=y CONFIG_MOUSE_PS2_CYPRESS=y CONFIG_MOUSE_PS2_LIFEBOOK=y CONFIG_MOUSE_PS2_TRACKPOINT=y # CONFIG_MOUSE_PS2_ELANTECH is not set # CONFIG_MOUSE_PS2_SENTELIC is not set # CONFIG_MOUSE_PS2_TOUCHKIT is not set CONFIG_MOUSE_PS2_FOCALTECH=y # CONFIG_MOUSE_PS2_VMMOUSE is not set CONFIG_MOUSE_PS2_SMBUS=y # CONFIG_MOUSE_SERIAL is not set # CONFIG_MOUSE_APPLETOUCH is not set # CONFIG_MOUSE_BCM5974 is not set # CONFIG_MOUSE_CYAPA is not set # CONFIG_MOUSE_ELAN_I2C is not set # CONFIG_MOUSE_VSXXXAA is not set # CONFIG_MOUSE_SYNAPTICS_I2C is not set # CONFIG_MOUSE_SYNAPTICS_USB is not set CONFIG_INPUT_JOYSTICK=y # CONFIG_JOYSTICK_ANALOG is not set # CONFIG_JOYSTICK_A3D is not set # CONFIG_JOYSTICK_ADI is not set # CONFIG_JOYSTICK_COBRA is not set # CONFIG_JOYSTICK_GF2K is not set # CONFIG_JOYSTICK_GRIP is not set # CONFIG_JOYSTICK_GRIP_MP is not set # CONFIG_JOYSTICK_GUILLEMOT is not set # CONFIG_JOYSTICK_INTERACT is not set # CONFIG_JOYSTICK_SIDEWINDER is not set # CONFIG_JOYSTICK_TMDC is not set # CONFIG_JOYSTICK_IFORCE is not set # CONFIG_JOYSTICK_WARRIOR is not set # CONFIG_JOYSTICK_MAGELLAN is not set # CONFIG_JOYSTICK_SPACEORB is not set # CONFIG_JOYSTICK_SPACEBALL is not set # CONFIG_JOYSTICK_STINGER is not set # CONFIG_JOYSTICK_TWIDJOY is not set # CONFIG_JOYSTICK_ZHENHUA is not set # CONFIG_JOYSTICK_AS5011 is not set # CONFIG_JOYSTICK_JOYDUMP is not set # CONFIG_JOYSTICK_XPAD is not set # CONFIG_JOYSTICK_PXRC is not set # CONFIG_JOYSTICK_QWIIC is not set # CONFIG_JOYSTICK_FSIA6B is not set # CONFIG_JOYSTICK_SENSEHAT is not set # CONFIG_JOYSTICK_SEESAW is not set CONFIG_INPUT_TABLET=y # CONFIG_TABLET_USB_ACECAD is not set # CONFIG_TABLET_USB_AIPTEK is not set # CONFIG_TABLET_USB_HANWANG is not set # CONFIG_TABLET_USB_KBTAB is not set # CONFIG_TABLET_USB_PEGASUS is not set # CONFIG_TABLET_SERIAL_WACOM4 is not set CONFIG_INPUT_TOUCHSCREEN=y # CONFIG_TOUCHSCREEN_AD7879 is not set # CONFIG_TOUCHSCREEN_ATMEL_MXT is not set # CONFIG_TOUCHSCREEN_BU21013 is not set # CONFIG_TOUCHSCREEN_BU21029 is not set # CONFIG_TOUCHSCREEN_CHIPONE_ICN8505 is not set # CONFIG_TOUCHSCREEN_CY8CTMA140 is not set # CONFIG_TOUCHSCREEN_CYTTSP_CORE is not set # CONFIG_TOUCHSCREEN_CYTTSP5 is not set # CONFIG_TOUCHSCREEN_DYNAPRO is not set # CONFIG_TOUCHSCREEN_HAMPSHIRE is not set # CONFIG_TOUCHSCREEN_EETI is not set # CONFIG_TOUCHSCREEN_EGALAX_SERIAL is not set # CONFIG_TOUCHSCREEN_EXC3000 is not set # CONFIG_TOUCHSCREEN_FUJITSU is not set # CONFIG_TOUCHSCREEN_GOODIX_BERLIN_I2C is not set # CONFIG_TOUCHSCREEN_HIDEEP is not set # CONFIG_TOUCHSCREEN_HYCON_HY46XX is not set # CONFIG_TOUCHSCREEN_HYNITRON_CSTXXX is not set # CONFIG_TOUCHSCREEN_ILI210X is not set # CONFIG_TOUCHSCREEN_ILITEK is not set # CONFIG_TOUCHSCREEN_S6SY761 is not set # CONFIG_TOUCHSCREEN_GUNZE is not set # CONFIG_TOUCHSCREEN_EKTF2127 is not set # CONFIG_TOUCHSCREEN_ELAN is not set # CONFIG_TOUCHSCREEN_ELO is not set # CONFIG_TOUCHSCREEN_WACOM_W8001 is not set # CONFIG_TOUCHSCREEN_WACOM_I2C is not set # CONFIG_TOUCHSCREEN_MAX11801 is not set # CONFIG_TOUCHSCREEN_MMS114 is not set # CONFIG_TOUCHSCREEN_MELFAS_MIP4 is not set # CONFIG_TOUCHSCREEN_MTOUCH is not set # CONFIG_TOUCHSCREEN_NOVATEK_NVT_TS is not set # CONFIG_TOUCHSCREEN_IMAGIS is not set # CONFIG_TOUCHSCREEN_INEXIO is not set # CONFIG_TOUCHSCREEN_PENMOUNT is not set # CONFIG_TOUCHSCREEN_EDT_FT5X06 is not set # CONFIG_TOUCHSCREEN_TOUCHRIGHT is not set # CONFIG_TOUCHSCREEN_TOUCHWIN is not set # CONFIG_TOUCHSCREEN_PIXCIR is not set # CONFIG_TOUCHSCREEN_WDT87XX_I2C is not set # CONFIG_TOUCHSCREEN_USB_COMPOSITE is not set # CONFIG_TOUCHSCREEN_TOUCHIT213 is not set # CONFIG_TOUCHSCREEN_TSC_SERIO is not set # CONFIG_TOUCHSCREEN_TSC2004 is not set # CONFIG_TOUCHSCREEN_TSC2007 is not set # CONFIG_TOUCHSCREEN_SILEAD is not set # CONFIG_TOUCHSCREEN_ST1232 is not set # CONFIG_TOUCHSCREEN_STMFTS is not set # CONFIG_TOUCHSCREEN_SX8654 is not set # CONFIG_TOUCHSCREEN_TPS6507X is not set # CONFIG_TOUCHSCREEN_ZET6223 is not set # CONFIG_TOUCHSCREEN_ROHM_BU21023 is not set # CONFIG_TOUCHSCREEN_IQS5XX is not set # CONFIG_TOUCHSCREEN_IQS7211 is not set # CONFIG_TOUCHSCREEN_ZINITIX is not set # CONFIG_TOUCHSCREEN_HIMAX_HX83112B is not set CONFIG_INPUT_MISC=y # CONFIG_INPUT_AD714X is not set # CONFIG_INPUT_BMA150 is not set # CONFIG_INPUT_E3X0_BUTTON is not set # CONFIG_INPUT_PCSPKR is not set # CONFIG_INPUT_MMA8450 is not set # CONFIG_INPUT_APANEL is not set # CONFIG_INPUT_ATLAS_BTNS is not set # CONFIG_INPUT_ATI_REMOTE2 is not set # CONFIG_INPUT_KEYSPAN_REMOTE is not set # CONFIG_INPUT_KXTJ9 is not set # CONFIG_INPUT_POWERMATE is not set # CONFIG_INPUT_YEALINK is not set # CONFIG_INPUT_CM109 is not set # CONFIG_INPUT_UINPUT is not set # CONFIG_INPUT_PCF8574 is not set # CONFIG_INPUT_DA7280_HAPTICS is not set # CONFIG_INPUT_ADXL34X is not set # CONFIG_INPUT_IMS_PCU is not set # CONFIG_INPUT_IQS269A is not set # CONFIG_INPUT_IQS626A is not set # CONFIG_INPUT_IQS7222 is not set # CONFIG_INPUT_CMA3000 is not set # CONFIG_INPUT_IDEAPAD_SLIDEBAR is not set # CONFIG_INPUT_DRV2665_HAPTICS is not set # CONFIG_INPUT_DRV2667_HAPTICS is not set # CONFIG_RMI4_CORE is not set # # Hardware I/O ports # CONFIG_SERIO=y CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y CONFIG_SERIO_I8042=y CONFIG_SERIO_SERPORT=y # CONFIG_SERIO_CT82C710 is not set # CONFIG_SERIO_PCIPS2 is not set CONFIG_SERIO_LIBPS2=y # CONFIG_SERIO_RAW is not set # CONFIG_SERIO_ALTERA_PS2 is not set # CONFIG_SERIO_PS2MULT is not set # CONFIG_SERIO_ARC_PS2 is not set # CONFIG_USERIO is not set # CONFIG_GAMEPORT is not set # end of Hardware I/O ports # end of Input device support # # Character devices # CONFIG_TTY=y CONFIG_VT=y CONFIG_CONSOLE_TRANSLATIONS=y CONFIG_VT_CONSOLE=y CONFIG_VT_CONSOLE_SLEEP=y # CONFIG_VT_HW_CONSOLE_BINDING is not set CONFIG_UNIX98_PTYS=y # CONFIG_LEGACY_PTYS is not set CONFIG_LEGACY_TIOCSTI=y CONFIG_LDISC_AUTOLOAD=y # # Serial drivers # CONFIG_SERIAL_EARLYCON=y CONFIG_SERIAL_8250=y CONFIG_SERIAL_8250_DEPRECATED_OPTIONS=y CONFIG_SERIAL_8250_PNP=y # CONFIG_SERIAL_8250_16550A_VARIANTS is not set # CONFIG_SERIAL_8250_FINTEK is not set CONFIG_SERIAL_8250_CONSOLE=y CONFIG_SERIAL_8250_DMA=y CONFIG_SERIAL_8250_PCILIB=y CONFIG_SERIAL_8250_PCI=y CONFIG_SERIAL_8250_EXAR=y # CONFIG_SERIAL_8250_CS is not set CONFIG_SERIAL_8250_NR_UARTS=32 CONFIG_SERIAL_8250_RUNTIME_UARTS=4 CONFIG_SERIAL_8250_EXTENDED=y CONFIG_SERIAL_8250_MANY_PORTS=y # CONFIG_SERIAL_8250_PCI1XXXX is not set CONFIG_SERIAL_8250_SHARE_IRQ=y CONFIG_SERIAL_8250_DETECT_IRQ=y CONFIG_SERIAL_8250_RSA=y CONFIG_SERIAL_8250_DWLIB=y # CONFIG_SERIAL_8250_DW is not set # CONFIG_SERIAL_8250_RT288X is not set CONFIG_SERIAL_8250_LPSS=y CONFIG_SERIAL_8250_MID=y CONFIG_SERIAL_8250_PERICOM=y # CONFIG_SERIAL_8250_NI is not set # # Non-8250 serial port support # # CONFIG_SERIAL_UARTLITE is not set CONFIG_SERIAL_CORE=y CONFIG_SERIAL_CORE_CONSOLE=y # CONFIG_SERIAL_JSM is not set # CONFIG_SERIAL_LANTIQ is not set # CONFIG_SERIAL_SCCNXP is not set # CONFIG_SERIAL_SC16IS7XX is not set # CONFIG_SERIAL_ALTERA_JTAGUART is not set # CONFIG_SERIAL_ALTERA_UART is not set # CONFIG_SERIAL_ARC is not set # CONFIG_SERIAL_RP2 is not set # CONFIG_SERIAL_FSL_LPUART is not set # CONFIG_SERIAL_FSL_LINFLEXUART is not set # CONFIG_SERIAL_SPRD is not set # end of Serial drivers CONFIG_SERIAL_NONSTANDARD=y # CONFIG_MOXA_INTELLIO is not set # CONFIG_MOXA_SMARTIO is not set # CONFIG_N_HDLC is not set # CONFIG_IPWIRELESS is not set # CONFIG_N_GSM is not set # CONFIG_NOZOMI is not set # CONFIG_NULL_TTY is not set CONFIG_HVC_DRIVER=y # CONFIG_SERIAL_DEV_BUS is not set # CONFIG_TTY_PRINTK is not set CONFIG_VIRTIO_CONSOLE=y # CONFIG_IPMI_HANDLER is not set CONFIG_HW_RANDOM=y # CONFIG_HW_RANDOM_TIMERIOMEM is not set # CONFIG_HW_RANDOM_INTEL is not set # CONFIG_HW_RANDOM_AMD is not set # CONFIG_HW_RANDOM_BA431 is not set CONFIG_HW_RANDOM_VIA=y # CONFIG_HW_RANDOM_VIRTIO is not set # CONFIG_HW_RANDOM_XIPHERA is not set # CONFIG_APPLICOM is not set # CONFIG_MWAVE is not set CONFIG_DEVMEM=y CONFIG_NVRAM=y CONFIG_DEVPORT=y CONFIG_HPET=y # CONFIG_HPET_MMAP is not set # CONFIG_HANGCHECK_TIMER is not set # CONFIG_TCG_TPM is not set # CONFIG_TELCLOCK is not set # CONFIG_XILLYBUS is not set # CONFIG_XILLYUSB is not set # end of Character devices # # I2C support # CONFIG_I2C=y CONFIG_ACPI_I2C_OPREGION=y CONFIG_I2C_BOARDINFO=y # CONFIG_I2C_CHARDEV is not set # CONFIG_I2C_MUX is not set CONFIG_I2C_HELPER_AUTO=y CONFIG_I2C_SMBUS=y CONFIG_I2C_ALGOBIT=y # # I2C Hardware Bus support # # # PC SMBus host controller drivers # # CONFIG_I2C_ALI1535 is not set # CONFIG_I2C_ALI1563 is not set # CONFIG_I2C_ALI15X3 is not set # CONFIG_I2C_AMD756 is not set # CONFIG_I2C_AMD8111 is not set # CONFIG_I2C_AMD_MP2 is not set CONFIG_I2C_I801=y # CONFIG_I2C_ISCH is not set # CONFIG_I2C_ISMT is not set # CONFIG_I2C_PIIX4 is not set # CONFIG_I2C_NFORCE2 is not set # CONFIG_I2C_NVIDIA_GPU is not set # CONFIG_I2C_SIS5595 is not set # CONFIG_I2C_SIS630 is not set # CONFIG_I2C_SIS96X is not set # CONFIG_I2C_VIA is not set # CONFIG_I2C_VIAPRO is not set # CONFIG_I2C_ZHAOXIN is not set # # ACPI drivers # # CONFIG_I2C_SCMI is not set # # I2C system bus drivers (mostly embedded / system-on-chip) # # CONFIG_I2C_DESIGNWARE_CORE is not set # CONFIG_I2C_EMEV2 is not set # CONFIG_I2C_OCORES is not set # CONFIG_I2C_PCA_PLATFORM is not set # CONFIG_I2C_SIMTEC is not set # CONFIG_I2C_XILINX is not set # # External I2C/SMBus adapter drivers # # CONFIG_I2C_DIOLAN_U2C is not set # CONFIG_I2C_CP2615 is not set # CONFIG_I2C_PCI1XXXX is not set # CONFIG_I2C_ROBOTFUZZ_OSIF is not set # CONFIG_I2C_TAOS_EVM is not set # CONFIG_I2C_TINY_USB is not set # # Other I2C/SMBus bus drivers # # CONFIG_I2C_MLXCPLD is not set # CONFIG_I2C_VIRTIO is not set # end of I2C Hardware Bus support # CONFIG_I2C_STUB is not set # CONFIG_I2C_SLAVE is not set # CONFIG_I2C_DEBUG_CORE is not set # CONFIG_I2C_DEBUG_ALGO is not set # CONFIG_I2C_DEBUG_BUS is not set # end of I2C support # CONFIG_I3C is not set # CONFIG_SPI is not set # CONFIG_SPMI is not set # CONFIG_HSI is not set CONFIG_PPS=y # CONFIG_PPS_DEBUG is not set # # PPS clients support # # CONFIG_PPS_CLIENT_KTIMER is not set # CONFIG_PPS_CLIENT_LDISC is not set # CONFIG_PPS_CLIENT_GPIO is not set # CONFIG_PPS_GENERATOR is not set # # PTP clock support # CONFIG_PTP_1588_CLOCK=y CONFIG_PTP_1588_CLOCK_OPTIONAL=y # # Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks. # CONFIG_PTP_1588_CLOCK_KVM=y CONFIG_PTP_1588_CLOCK_VMCLOCK=y # CONFIG_PTP_1588_CLOCK_IDT82P33 is not set # CONFIG_PTP_1588_CLOCK_IDTCM is not set # CONFIG_PTP_1588_CLOCK_FC3W is not set # CONFIG_PTP_1588_CLOCK_MOCK is not set # CONFIG_PTP_1588_CLOCK_VMW is not set # end of PTP clock support # CONFIG_PINCTRL is not set # CONFIG_GPIOLIB is not set # CONFIG_W1 is not set # CONFIG_POWER_RESET is not set # CONFIG_POWER_SEQUENCING is not set CONFIG_POWER_SUPPLY=y # CONFIG_POWER_SUPPLY_DEBUG is not set CONFIG_POWER_SUPPLY_HWMON=y # CONFIG_IP5XXX_POWER is not set # CONFIG_TEST_POWER is not set # CONFIG_CHARGER_ADP5061 is not set # CONFIG_BATTERY_CW2015 is not set # CONFIG_BATTERY_DS2780 is not set # CONFIG_BATTERY_DS2781 is not set # CONFIG_BATTERY_DS2782 is not set # CONFIG_BATTERY_SAMSUNG_SDI is not set # CONFIG_BATTERY_SBS is not set # CONFIG_CHARGER_SBS is not set # CONFIG_BATTERY_BQ27XXX is not set # CONFIG_BATTERY_MAX17042 is not set # CONFIG_BATTERY_MAX1720X is not set # CONFIG_CHARGER_MAX8903 is not set # CONFIG_CHARGER_LP8727 is not set # CONFIG_CHARGER_LTC4162L is not set # CONFIG_CHARGER_MAX77976 is not set # CONFIG_CHARGER_BQ2415X is not set # CONFIG_BATTERY_GAUGE_LTC2941 is not set # CONFIG_BATTERY_GOLDFISH is not set # CONFIG_BATTERY_RT5033 is not set # CONFIG_CHARGER_BD99954 is not set # CONFIG_BATTERY_UG3105 is not set # CONFIG_FUEL_GAUGE_MM8013 is not set CONFIG_HWMON=y # CONFIG_HWMON_DEBUG_CHIP is not set # # Native drivers # # CONFIG_SENSORS_ABITUGURU is not set # CONFIG_SENSORS_ABITUGURU3 is not set # CONFIG_SENSORS_AD7414 is not set # CONFIG_SENSORS_AD7418 is not set # CONFIG_SENSORS_ADM1025 is not set # CONFIG_SENSORS_ADM1026 is not set # CONFIG_SENSORS_ADM1029 is not set # CONFIG_SENSORS_ADM1031 is not set # CONFIG_SENSORS_ADM1177 is not set # CONFIG_SENSORS_ADM9240 is not set # CONFIG_SENSORS_ADT7410 is not set # CONFIG_SENSORS_ADT7411 is not set # CONFIG_SENSORS_ADT7462 is not set # CONFIG_SENSORS_ADT7470 is not set # CONFIG_SENSORS_ADT7475 is not set # CONFIG_SENSORS_AHT10 is not set # CONFIG_SENSORS_AQUACOMPUTER_D5NEXT is not set # CONFIG_SENSORS_AS370 is not set # CONFIG_SENSORS_ASC7621 is not set # CONFIG_SENSORS_ASUS_ROG_RYUJIN is not set # CONFIG_SENSORS_AXI_FAN_CONTROL is not set # CONFIG_SENSORS_K8TEMP is not set # CONFIG_SENSORS_K10TEMP is not set # CONFIG_SENSORS_FAM15H_POWER is not set # CONFIG_SENSORS_APPLESMC is not set # CONFIG_SENSORS_ASB100 is not set # CONFIG_SENSORS_ATXP1 is not set # CONFIG_SENSORS_CHIPCAP2 is not set # CONFIG_SENSORS_CORSAIR_CPRO is not set # CONFIG_SENSORS_CORSAIR_PSU is not set # CONFIG_SENSORS_DRIVETEMP is not set # CONFIG_SENSORS_DS620 is not set # CONFIG_SENSORS_DS1621 is not set # CONFIG_SENSORS_DELL_SMM is not set # CONFIG_SENSORS_I5K_AMB is not set # CONFIG_SENSORS_F71805F is not set # CONFIG_SENSORS_F71882FG is not set # CONFIG_SENSORS_F75375S is not set # CONFIG_SENSORS_FSCHMD is not set # CONFIG_SENSORS_FTSTEUTATES is not set # CONFIG_SENSORS_GIGABYTE_WATERFORCE is not set # CONFIG_SENSORS_GL518SM is not set # CONFIG_SENSORS_GL520SM is not set # CONFIG_SENSORS_G760A is not set # CONFIG_SENSORS_G762 is not set # CONFIG_SENSORS_HIH6130 is not set # CONFIG_SENSORS_HS3001 is not set # CONFIG_SENSORS_HTU31 is not set # CONFIG_SENSORS_I5500 is not set # CONFIG_SENSORS_CORETEMP is not set # CONFIG_SENSORS_ISL28022 is not set # CONFIG_SENSORS_IT87 is not set # CONFIG_SENSORS_JC42 is not set # CONFIG_SENSORS_POWERZ is not set # CONFIG_SENSORS_POWR1220 is not set # CONFIG_SENSORS_LENOVO_EC is not set # CONFIG_SENSORS_LINEAGE is not set # CONFIG_SENSORS_LTC2945 is not set # CONFIG_SENSORS_LTC2947_I2C is not set # CONFIG_SENSORS_LTC2990 is not set # CONFIG_SENSORS_LTC2991 is not set # CONFIG_SENSORS_LTC4151 is not set # CONFIG_SENSORS_LTC4215 is not set # CONFIG_SENSORS_LTC4222 is not set # CONFIG_SENSORS_LTC4245 is not set # CONFIG_SENSORS_LTC4260 is not set # CONFIG_SENSORS_LTC4261 is not set # CONFIG_SENSORS_LTC4282 is not set # CONFIG_SENSORS_MAX127 is not set # CONFIG_SENSORS_MAX16065 is not set # CONFIG_SENSORS_MAX1619 is not set # CONFIG_SENSORS_MAX1668 is not set # CONFIG_SENSORS_MAX197 is not set # CONFIG_SENSORS_MAX31730 is not set # CONFIG_SENSORS_MAX31760 is not set # CONFIG_MAX31827 is not set # CONFIG_SENSORS_MAX6620 is not set # CONFIG_SENSORS_MAX6621 is not set # CONFIG_SENSORS_MAX6639 is not set # CONFIG_SENSORS_MAX6650 is not set # CONFIG_SENSORS_MAX6697 is not set # CONFIG_SENSORS_MAX31790 is not set # CONFIG_SENSORS_MC34VR500 is not set # CONFIG_SENSORS_MCP3021 is not set # CONFIG_SENSORS_TC654 is not set # CONFIG_SENSORS_TPS23861 is not set # CONFIG_SENSORS_MR75203 is not set # CONFIG_SENSORS_LM63 is not set # CONFIG_SENSORS_LM73 is not set # CONFIG_SENSORS_LM75 is not set # CONFIG_SENSORS_LM77 is not set # CONFIG_SENSORS_LM78 is not set # CONFIG_SENSORS_LM80 is not set # CONFIG_SENSORS_LM83 is not set # CONFIG_SENSORS_LM85 is not set # CONFIG_SENSORS_LM87 is not set # CONFIG_SENSORS_LM90 is not set # CONFIG_SENSORS_LM92 is not set # CONFIG_SENSORS_LM93 is not set # CONFIG_SENSORS_LM95234 is not set # CONFIG_SENSORS_LM95241 is not set # CONFIG_SENSORS_LM95245 is not set # CONFIG_SENSORS_PC87360 is not set # CONFIG_SENSORS_PC87427 is not set # CONFIG_SENSORS_NCT6683 is not set # CONFIG_SENSORS_NCT6775 is not set # CONFIG_SENSORS_NCT6775_I2C is not set # CONFIG_SENSORS_NCT7363 is not set # CONFIG_SENSORS_NCT7802 is not set # CONFIG_SENSORS_NCT7904 is not set # CONFIG_SENSORS_NPCM7XX is not set # CONFIG_SENSORS_NZXT_KRAKEN2 is not set # CONFIG_SENSORS_NZXT_KRAKEN3 is not set # CONFIG_SENSORS_NZXT_SMART2 is not set # CONFIG_SENSORS_OCC_P8_I2C is not set # CONFIG_SENSORS_OXP is not set # CONFIG_SENSORS_PCF8591 is not set # CONFIG_PMBUS is not set # CONFIG_SENSORS_PT5161L is not set # CONFIG_SENSORS_SBTSI is not set # CONFIG_SENSORS_SBRMI is not set # CONFIG_SENSORS_SHT21 is not set # CONFIG_SENSORS_SHT3x is not set # CONFIG_SENSORS_SHT4x is not set # CONFIG_SENSORS_SHTC1 is not set # CONFIG_SENSORS_SIS5595 is not set # CONFIG_SENSORS_DME1737 is not set # CONFIG_SENSORS_EMC1403 is not set # CONFIG_SENSORS_EMC2103 is not set # CONFIG_SENSORS_EMC2305 is not set # CONFIG_SENSORS_EMC6W201 is not set # CONFIG_SENSORS_SMSC47M1 is not set # CONFIG_SENSORS_SMSC47M192 is not set # CONFIG_SENSORS_SMSC47B397 is not set # CONFIG_SENSORS_SCH5627 is not set # CONFIG_SENSORS_SCH5636 is not set # CONFIG_SENSORS_STTS751 is not set # CONFIG_SENSORS_ADC128D818 is not set # CONFIG_SENSORS_ADS7828 is not set # CONFIG_SENSORS_AMC6821 is not set # CONFIG_SENSORS_INA209 is not set # CONFIG_SENSORS_INA2XX is not set # CONFIG_SENSORS_INA238 is not set # CONFIG_SENSORS_INA3221 is not set # CONFIG_SENSORS_SPD5118 is not set # CONFIG_SENSORS_TC74 is not set # CONFIG_SENSORS_THMC50 is not set # CONFIG_SENSORS_TMP102 is not set # CONFIG_SENSORS_TMP103 is not set # CONFIG_SENSORS_TMP108 is not set # CONFIG_SENSORS_TMP401 is not set # CONFIG_SENSORS_TMP421 is not set # CONFIG_SENSORS_TMP464 is not set # CONFIG_SENSORS_TMP513 is not set # CONFIG_SENSORS_VIA_CPUTEMP is not set # CONFIG_SENSORS_VIA686A is not set # CONFIG_SENSORS_VT1211 is not set # CONFIG_SENSORS_VT8231 is not set # CONFIG_SENSORS_W83773G is not set # CONFIG_SENSORS_W83781D is not set # CONFIG_SENSORS_W83791D is not set # CONFIG_SENSORS_W83792D is not set # CONFIG_SENSORS_W83793 is not set # CONFIG_SENSORS_W83795 is not set # CONFIG_SENSORS_W83L785TS is not set # CONFIG_SENSORS_W83L786NG is not set # CONFIG_SENSORS_W83627HF is not set # CONFIG_SENSORS_W83627EHF is not set # CONFIG_SENSORS_XGENE is not set # # ACPI drivers # # CONFIG_SENSORS_ACPI_POWER is not set # CONFIG_SENSORS_ATK0110 is not set # CONFIG_SENSORS_ASUS_WMI is not set # CONFIG_SENSORS_ASUS_EC is not set # CONFIG_SENSORS_HP_WMI is not set CONFIG_THERMAL=y CONFIG_THERMAL_NETLINK=y # CONFIG_THERMAL_STATISTICS is not set # CONFIG_THERMAL_DEBUGFS is not set # CONFIG_THERMAL_CORE_TESTING is not set CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS=0 CONFIG_THERMAL_HWMON=y CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y # CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE is not set # CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE is not set # CONFIG_THERMAL_GOV_FAIR_SHARE is not set CONFIG_THERMAL_GOV_STEP_WISE=y # CONFIG_THERMAL_GOV_BANG_BANG is not set CONFIG_THERMAL_GOV_USER_SPACE=y # CONFIG_PCIE_THERMAL is not set # CONFIG_THERMAL_EMULATION is not set # # Intel thermal drivers # # CONFIG_INTEL_POWERCLAMP is not set CONFIG_X86_THERMAL_VECTOR=y CONFIG_INTEL_TCC=y CONFIG_X86_PKG_TEMP_THERMAL=m # CONFIG_INTEL_SOC_DTS_THERMAL is not set # # ACPI INT340X thermal drivers # # CONFIG_INT340X_THERMAL is not set # end of ACPI INT340X thermal drivers # CONFIG_INTEL_PCH_THERMAL is not set # CONFIG_INTEL_TCC_COOLING is not set # CONFIG_INTEL_HFI_THERMAL is not set # end of Intel thermal drivers CONFIG_WATCHDOG=y # CONFIG_WATCHDOG_CORE is not set # CONFIG_WATCHDOG_NOWAYOUT is not set CONFIG_WATCHDOG_HANDLE_BOOT_ENABLED=y CONFIG_WATCHDOG_OPEN_TIMEOUT=0 # CONFIG_WATCHDOG_SYSFS is not set # CONFIG_WATCHDOG_HRTIMER_PRETIMEOUT is not set # # Watchdog Pretimeout Governors # # # Watchdog Device Drivers # # CONFIG_SOFT_WATCHDOG is not set # CONFIG_LENOVO_SE10_WDT is not set # CONFIG_LENOVO_SE30_WDT is not set # CONFIG_WDAT_WDT is not set # CONFIG_XILINX_WATCHDOG is not set # CONFIG_ZIIRAVE_WATCHDOG is not set # CONFIG_CADENCE_WATCHDOG is not set # CONFIG_DW_WATCHDOG is not set # CONFIG_MAX63XX_WATCHDOG is not set # CONFIG_ACQUIRE_WDT is not set # CONFIG_ADVANTECH_WDT is not set # CONFIG_ADVANTECH_EC_WDT is not set # CONFIG_ALIM1535_WDT is not set # CONFIG_ALIM7101_WDT is not set # CONFIG_EBC_C384_WDT is not set # CONFIG_EXAR_WDT is not set # CONFIG_F71808E_WDT is not set # CONFIG_SP5100_TCO is not set # CONFIG_SBC_FITPC2_WATCHDOG is not set # CONFIG_EUROTECH_WDT is not set # CONFIG_IB700_WDT is not set # CONFIG_IBMASR is not set # CONFIG_WAFER_WDT is not set # CONFIG_I6300ESB_WDT is not set # CONFIG_IE6XX_WDT is not set # CONFIG_ITCO_WDT is not set # CONFIG_IT8712F_WDT is not set # CONFIG_IT87_WDT is not set # CONFIG_HP_WATCHDOG is not set # CONFIG_SC1200_WDT is not set # CONFIG_PC87413_WDT is not set # CONFIG_NV_TCO is not set # CONFIG_60XX_WDT is not set # CONFIG_SMSC_SCH311X_WDT is not set # CONFIG_SMSC37B787_WDT is not set # CONFIG_TQMX86_WDT is not set # CONFIG_VIA_WDT is not set # CONFIG_W83627HF_WDT is not set # CONFIG_W83877F_WDT is not set # CONFIG_W83977F_WDT is not set # CONFIG_MACHZ_WDT is not set # CONFIG_SBC_EPX_C3_WATCHDOG is not set # CONFIG_NI903X_WDT is not set # CONFIG_NIC7018_WDT is not set # # PCI-based Watchdog Cards # # CONFIG_PCIPCWATCHDOG is not set # CONFIG_WDTPCI is not set # # USB-based Watchdog Cards # # CONFIG_USBPCWATCHDOG is not set CONFIG_SSB_POSSIBLE=y # CONFIG_SSB is not set CONFIG_BCMA_POSSIBLE=y # CONFIG_BCMA is not set # # Multifunction device drivers # # CONFIG_MFD_AS3711 is not set # CONFIG_MFD_SMPRO is not set # CONFIG_PMIC_ADP5520 is not set # CONFIG_MFD_BCM590XX is not set # CONFIG_MFD_BD9571MWV is not set # CONFIG_MFD_AXP20X_I2C is not set # CONFIG_MFD_CGBC is not set # CONFIG_MFD_CS42L43_I2C is not set # CONFIG_MFD_MADERA is not set # CONFIG_PMIC_DA903X is not set # CONFIG_MFD_DA9052_I2C is not set # CONFIG_MFD_DA9055 is not set # CONFIG_MFD_DA9062 is not set # CONFIG_MFD_DA9063 is not set # CONFIG_MFD_DA9150 is not set # CONFIG_MFD_DLN2 is not set # CONFIG_MFD_MC13XXX_I2C is not set # CONFIG_MFD_MP2629 is not set # CONFIG_MFD_INTEL_QUARK_I2C_GPIO is not set # CONFIG_LPC_ICH is not set # CONFIG_LPC_SCH is not set # CONFIG_MFD_INTEL_LPSS_ACPI is not set # CONFIG_MFD_INTEL_LPSS_PCI is not set # CONFIG_MFD_INTEL_PMC_BXT is not set # CONFIG_MFD_IQS62X is not set # CONFIG_MFD_JANZ_CMODIO is not set # CONFIG_MFD_KEMPLD is not set # CONFIG_MFD_88PM800 is not set # CONFIG_MFD_88PM805 is not set # CONFIG_MFD_88PM860X is not set # CONFIG_MFD_MAX14577 is not set # CONFIG_MFD_MAX77541 is not set # CONFIG_MFD_MAX77693 is not set # CONFIG_MFD_MAX77705 is not set # CONFIG_MFD_MAX77843 is not set # CONFIG_MFD_MAX8907 is not set # CONFIG_MFD_MAX8925 is not set # CONFIG_MFD_MAX8997 is not set # CONFIG_MFD_MAX8998 is not set # CONFIG_MFD_MT6360 is not set # CONFIG_MFD_MT6370 is not set # CONFIG_MFD_MT6397 is not set # CONFIG_MFD_MENF21BMC is not set # CONFIG_MFD_VIPERBOARD is not set # CONFIG_MFD_RETU is not set # CONFIG_MFD_SY7636A is not set # CONFIG_MFD_RDC321X is not set # CONFIG_MFD_RT4831 is not set # CONFIG_MFD_RT5033 is not set # CONFIG_MFD_RT5120 is not set # CONFIG_MFD_RC5T583 is not set # CONFIG_MFD_SI476X_CORE is not set # CONFIG_MFD_SM501 is not set # CONFIG_MFD_SKY81452 is not set # CONFIG_MFD_SYSCON is not set # CONFIG_MFD_LP3943 is not set # CONFIG_MFD_LP8788 is not set # CONFIG_MFD_TI_LMU is not set # CONFIG_MFD_PALMAS is not set # CONFIG_TPS6105X is not set # CONFIG_TPS6507X is not set # CONFIG_MFD_TPS65086 is not set # CONFIG_MFD_TPS65090 is not set # CONFIG_MFD_TI_LP873X is not set # CONFIG_MFD_TPS6586X is not set # CONFIG_MFD_TPS65912_I2C is not set # CONFIG_MFD_TPS6594_I2C is not set # CONFIG_TWL4030_CORE is not set # CONFIG_TWL6040_CORE is not set # CONFIG_MFD_WL1273_CORE is not set # CONFIG_MFD_LM3533 is not set # CONFIG_MFD_TQMX86 is not set # CONFIG_MFD_VX855 is not set # CONFIG_MFD_ARIZONA_I2C is not set # CONFIG_MFD_WM8400 is not set # CONFIG_MFD_WM831X_I2C is not set # CONFIG_MFD_WM8350_I2C is not set # CONFIG_MFD_WM8994 is not set # CONFIG_MFD_ATC260X_I2C is not set # CONFIG_MFD_CS40L50_I2C is not set # CONFIG_MFD_UPBOARD_FPGA is not set # end of Multifunction device drivers # CONFIG_REGULATOR is not set # CONFIG_RC_CORE is not set # # CEC support # # CONFIG_MEDIA_CEC_SUPPORT is not set # end of CEC support # CONFIG_MEDIA_SUPPORT is not set # # Graphics support # CONFIG_APERTURE_HELPERS=y CONFIG_VIDEO=y # CONFIG_AUXDISPLAY is not set CONFIG_AGP=y CONFIG_AGP_AMD64=y CONFIG_AGP_INTEL=y # CONFIG_AGP_SIS is not set # CONFIG_AGP_VIA is not set CONFIG_INTEL_GTT=y # CONFIG_VGA_SWITCHEROO is not set CONFIG_DRM=y CONFIG_DRM_MIPI_DSI=y # CONFIG_DRM_DEBUG_MM is not set CONFIG_DRM_KMS_HELPER=y # CONFIG_DRM_PANIC is not set # CONFIG_DRM_DEBUG_DP_MST_TOPOLOGY_REFS is not set # CONFIG_DRM_DEBUG_MODESET_LOCK is not set CONFIG_DRM_CLIENT_SELECTION=y # # Supported DRM clients # # CONFIG_DRM_FBDEV_EMULATION is not set # CONFIG_DRM_CLIENT_LOG is not set # end of Supported DRM clients # CONFIG_DRM_LOAD_EDID_FIRMWARE is not set CONFIG_DRM_DISPLAY_HELPER=y # CONFIG_DRM_DISPLAY_DP_AUX_CEC is not set # CONFIG_DRM_DISPLAY_DP_AUX_CHARDEV is not set CONFIG_DRM_DISPLAY_DP_HELPER=y CONFIG_DRM_DISPLAY_DSC_HELPER=y CONFIG_DRM_DISPLAY_HDCP_HELPER=y CONFIG_DRM_DISPLAY_HDMI_HELPER=y CONFIG_DRM_TTM=y CONFIG_DRM_BUDDY=y CONFIG_DRM_GEM_SHMEM_HELPER=y # # ARM devices # # end of ARM devices # CONFIG_DRM_RADEON is not set # CONFIG_DRM_AMDGPU is not set # CONFIG_DRM_NOUVEAU is not set CONFIG_DRM_I915=y CONFIG_DRM_I915_FORCE_PROBE="" CONFIG_DRM_I915_CAPTURE_ERROR=y CONFIG_DRM_I915_COMPRESS_ERROR=y CONFIG_DRM_I915_USERPTR=y # # drm/i915 Debugging # # CONFIG_DRM_I915_WERROR is not set # CONFIG_DRM_I915_REPLAY_GPU_HANGS_API is not set # CONFIG_DRM_I915_DEBUG is not set # CONFIG_DRM_I915_DEBUG_MMIO is not set # CONFIG_DRM_I915_SW_FENCE_DEBUG_OBJECTS is not set # CONFIG_DRM_I915_SW_FENCE_CHECK_DAG is not set # CONFIG_DRM_I915_DEBUG_GUC is not set # CONFIG_DRM_I915_SELFTEST is not set # CONFIG_DRM_I915_LOW_LEVEL_TRACEPOINTS is not set # CONFIG_DRM_I915_DEBUG_VBLANK_EVADE is not set # CONFIG_DRM_I915_DEBUG_RUNTIME_PM is not set # CONFIG_DRM_I915_DEBUG_WAKEREF is not set # end of drm/i915 Debugging # # drm/i915 Profile Guided Optimisation # CONFIG_DRM_I915_REQUEST_TIMEOUT=20000 CONFIG_DRM_I915_FENCE_TIMEOUT=10000 CONFIG_DRM_I915_USERFAULT_AUTOSUSPEND=250 CONFIG_DRM_I915_HEARTBEAT_INTERVAL=2500 CONFIG_DRM_I915_PREEMPT_TIMEOUT=640 CONFIG_DRM_I915_PREEMPT_TIMEOUT_COMPUTE=7500 CONFIG_DRM_I915_MAX_REQUEST_BUSYWAIT=8000 CONFIG_DRM_I915_STOP_TIMEOUT=100 CONFIG_DRM_I915_TIMESLICE_DURATION=1 # end of drm/i915 Profile Guided Optimisation # CONFIG_DRM_XE is not set # CONFIG_DRM_VGEM is not set # CONFIG_DRM_VKMS is not set # CONFIG_DRM_VMWGFX is not set # CONFIG_DRM_GMA500 is not set # CONFIG_DRM_UDL is not set # CONFIG_DRM_AST is not set # CONFIG_DRM_MGAG200 is not set # CONFIG_DRM_QXL is not set CONFIG_DRM_VIRTIO_GPU=y CONFIG_DRM_VIRTIO_GPU_KMS=y CONFIG_DRM_PANEL=y # # Display Panels # # CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN is not set # end of Display Panels CONFIG_DRM_BRIDGE=y CONFIG_DRM_PANEL_BRIDGE=y # # Display Interface Bridges # # CONFIG_DRM_I2C_NXP_TDA998X is not set # CONFIG_DRM_ANALOGIX_ANX78XX is not set # end of Display Interface Bridges # CONFIG_DRM_ETNAVIV is not set # CONFIG_DRM_HISI_HIBMC is not set # CONFIG_DRM_APPLETBDRM is not set # CONFIG_DRM_BOCHS is not set # CONFIG_DRM_CIRRUS_QEMU is not set # CONFIG_DRM_GM12U320 is not set # CONFIG_DRM_SIMPLEDRM is not set # CONFIG_DRM_VBOXVIDEO is not set # CONFIG_DRM_GUD is not set # CONFIG_DRM_SSD130X is not set CONFIG_DRM_PANEL_ORIENTATION_QUIRKS=y # # Frame buffer Devices # # CONFIG_FB is not set # end of Frame buffer Devices # # Backlight & LCD device support # # CONFIG_LCD_CLASS_DEVICE is not set CONFIG_BACKLIGHT_CLASS_DEVICE=y # CONFIG_BACKLIGHT_KTD2801 is not set # CONFIG_BACKLIGHT_KTZ8866 is not set # CONFIG_BACKLIGHT_APPLE is not set # CONFIG_BACKLIGHT_QCOM_WLED is not set # CONFIG_BACKLIGHT_SAHARA is not set # CONFIG_BACKLIGHT_ADP8860 is not set # CONFIG_BACKLIGHT_ADP8870 is not set # CONFIG_BACKLIGHT_LM3509 is not set # CONFIG_BACKLIGHT_LM3639 is not set # CONFIG_BACKLIGHT_LV5207LP is not set # CONFIG_BACKLIGHT_BD6107 is not set # CONFIG_BACKLIGHT_ARCXCNN is not set # end of Backlight & LCD device support CONFIG_HDMI=y # # Console display driver support # CONFIG_VGA_CONSOLE=y CONFIG_DUMMY_CONSOLE=y CONFIG_DUMMY_CONSOLE_COLUMNS=80 CONFIG_DUMMY_CONSOLE_ROWS=25 # end of Console display driver support # end of Graphics support # CONFIG_DRM_ACCEL is not set CONFIG_SOUND=y CONFIG_SND=y CONFIG_SND_TIMER=y CONFIG_SND_PCM=y CONFIG_SND_HWDEP=y CONFIG_SND_SEQ_DEVICE=y CONFIG_SND_JACK=y CONFIG_SND_JACK_INPUT_DEV=y # CONFIG_SND_OSSEMUL is not set CONFIG_SND_PCM_TIMER=y CONFIG_SND_HRTIMER=y # CONFIG_SND_DYNAMIC_MINORS is not set CONFIG_SND_SUPPORT_OLD_API=y CONFIG_SND_PROC_FS=y CONFIG_SND_VERBOSE_PROCFS=y CONFIG_SND_CTL_FAST_LOOKUP=y # CONFIG_SND_DEBUG is not set # CONFIG_SND_CTL_INPUT_VALIDATION is not set # CONFIG_SND_UTIMER is not set CONFIG_SND_VMASTER=y CONFIG_SND_DMA_SGBUF=y CONFIG_SND_SEQUENCER=y CONFIG_SND_SEQ_DUMMY=y CONFIG_SND_SEQ_HRTIMER_DEFAULT=y # CONFIG_SND_SEQ_UMP is not set CONFIG_SND_DRIVERS=y # CONFIG_SND_PCSP is not set # CONFIG_SND_DUMMY is not set # CONFIG_SND_ALOOP is not set # CONFIG_SND_PCMTEST is not set # CONFIG_SND_VIRMIDI is not set # CONFIG_SND_MTPAV is not set # CONFIG_SND_SERIAL_U16550 is not set # CONFIG_SND_MPU401 is not set CONFIG_SND_PCI=y # CONFIG_SND_AD1889 is not set # CONFIG_SND_ALS300 is not set # CONFIG_SND_ALS4000 is not set # CONFIG_SND_ALI5451 is not set # CONFIG_SND_ASIHPI is not set # CONFIG_SND_ATIIXP is not set # CONFIG_SND_ATIIXP_MODEM is not set # CONFIG_SND_AU8810 is not set # CONFIG_SND_AU8820 is not set # CONFIG_SND_AU8830 is not set # CONFIG_SND_AW2 is not set # CONFIG_SND_AZT3328 is not set # CONFIG_SND_BT87X is not set # CONFIG_SND_CA0106 is not set # CONFIG_SND_CMIPCI is not set # CONFIG_SND_OXYGEN is not set # CONFIG_SND_CS4281 is not set # CONFIG_SND_CS46XX is not set # CONFIG_SND_CTXFI is not set # CONFIG_SND_DARLA20 is not set # CONFIG_SND_GINA20 is not set # CONFIG_SND_LAYLA20 is not set # CONFIG_SND_DARLA24 is not set # CONFIG_SND_GINA24 is not set # CONFIG_SND_LAYLA24 is not set # CONFIG_SND_MONA is not set # CONFIG_SND_MIA is not set # CONFIG_SND_ECHO3G is not set # CONFIG_SND_INDIGO is not set # CONFIG_SND_INDIGOIO is not set # CONFIG_SND_INDIGODJ is not set # CONFIG_SND_INDIGOIOX is not set # CONFIG_SND_INDIGODJX is not set # CONFIG_SND_EMU10K1 is not set # CONFIG_SND_EMU10K1X is not set # CONFIG_SND_ENS1370 is not set # CONFIG_SND_ENS1371 is not set # CONFIG_SND_ES1938 is not set # CONFIG_SND_ES1968 is not set # CONFIG_SND_FM801 is not set # CONFIG_SND_HDSP is not set # CONFIG_SND_HDSPM is not set # CONFIG_SND_ICE1712 is not set # CONFIG_SND_ICE1724 is not set # CONFIG_SND_INTEL8X0 is not set # CONFIG_SND_INTEL8X0M is not set # CONFIG_SND_KORG1212 is not set # CONFIG_SND_LOLA is not set # CONFIG_SND_LX6464ES is not set # CONFIG_SND_MAESTRO3 is not set # CONFIG_SND_MIXART is not set # CONFIG_SND_NM256 is not set # CONFIG_SND_PCXHR is not set # CONFIG_SND_RIPTIDE is not set # CONFIG_SND_RME32 is not set # CONFIG_SND_RME96 is not set # CONFIG_SND_RME9652 is not set # CONFIG_SND_SE6X is not set # CONFIG_SND_SONICVIBES is not set # CONFIG_SND_TRIDENT is not set # CONFIG_SND_VIA82XX is not set # CONFIG_SND_VIA82XX_MODEM is not set # CONFIG_SND_VIRTUOSO is not set # CONFIG_SND_VX222 is not set # CONFIG_SND_YMFPCI is not set # # HD-Audio # CONFIG_SND_HDA=y CONFIG_SND_HDA_INTEL=y CONFIG_SND_HDA_HWDEP=y # CONFIG_SND_HDA_RECONFIG is not set # CONFIG_SND_HDA_INPUT_BEEP is not set # CONFIG_SND_HDA_PATCH_LOADER is not set # CONFIG_SND_HDA_CODEC_REALTEK is not set # CONFIG_SND_HDA_CODEC_ANALOG is not set # CONFIG_SND_HDA_CODEC_SIGMATEL is not set # CONFIG_SND_HDA_CODEC_VIA is not set # CONFIG_SND_HDA_CODEC_HDMI is not set # CONFIG_SND_HDA_CODEC_CIRRUS is not set # CONFIG_SND_HDA_CODEC_CS8409 is not set # CONFIG_SND_HDA_CODEC_CONEXANT is not set # CONFIG_SND_HDA_CODEC_SENARYTECH is not set # CONFIG_SND_HDA_CODEC_CA0110 is not set # CONFIG_SND_HDA_CODEC_CA0132 is not set # CONFIG_SND_HDA_CODEC_CMEDIA is not set # CONFIG_SND_HDA_CODEC_SI3054 is not set # CONFIG_SND_HDA_GENERIC is not set CONFIG_SND_HDA_POWER_SAVE_DEFAULT=0 # CONFIG_SND_HDA_INTEL_HDMI_SILENT_STREAM is not set # CONFIG_SND_HDA_CTL_DEV_ID is not set # end of HD-Audio CONFIG_SND_HDA_CORE=y CONFIG_SND_HDA_COMPONENT=y CONFIG_SND_HDA_I915=y CONFIG_SND_HDA_PREALLOC_SIZE=0 CONFIG_SND_INTEL_NHLT=y CONFIG_SND_INTEL_DSP_CONFIG=y CONFIG_SND_INTEL_SOUNDWIRE_ACPI=y CONFIG_SND_USB=y # CONFIG_SND_USB_AUDIO is not set # CONFIG_SND_USB_UA101 is not set # CONFIG_SND_USB_USX2Y is not set # CONFIG_SND_USB_CAIAQ is not set # CONFIG_SND_USB_US122L is not set # CONFIG_SND_USB_6FIRE is not set # CONFIG_SND_USB_HIFACE is not set # CONFIG_SND_BCD2000 is not set # CONFIG_SND_USB_POD is not set # CONFIG_SND_USB_PODHD is not set # CONFIG_SND_USB_TONEPORT is not set # CONFIG_SND_USB_VARIAX is not set CONFIG_SND_PCMCIA=y # CONFIG_SND_VXPOCKET is not set # CONFIG_SND_PDAUDIOCF is not set # CONFIG_SND_SOC is not set CONFIG_SND_X86=y # CONFIG_HDMI_LPE_AUDIO is not set # CONFIG_SND_VIRTIO is not set CONFIG_HID_SUPPORT=y CONFIG_HID=y # CONFIG_HID_BATTERY_STRENGTH is not set CONFIG_HIDRAW=y # CONFIG_UHID is not set CONFIG_HID_GENERIC=y # # Special HID drivers # CONFIG_HID_A4TECH=y # CONFIG_HID_ACCUTOUCH is not set # CONFIG_HID_ACRUX is not set CONFIG_HID_APPLE=y # CONFIG_HID_APPLEIR is not set # CONFIG_HID_APPLETB_BL is not set # CONFIG_HID_APPLETB_KBD is not set # CONFIG_HID_ASUS is not set # CONFIG_HID_AUREAL is not set CONFIG_HID_BELKIN=y # CONFIG_HID_BETOP_FF is not set # CONFIG_HID_BIGBEN_FF is not set CONFIG_HID_CHERRY=y CONFIG_HID_CHICONY=y # CONFIG_HID_CORSAIR is not set # CONFIG_HID_COUGAR is not set # CONFIG_HID_MACALLY is not set # CONFIG_HID_PRODIKEYS is not set # CONFIG_HID_CMEDIA is not set # CONFIG_HID_CREATIVE_SB0540 is not set CONFIG_HID_CYPRESS=y # CONFIG_HID_DRAGONRISE is not set # CONFIG_HID_EMS_FF is not set # CONFIG_HID_ELAN is not set # CONFIG_HID_ELECOM is not set # CONFIG_HID_ELO is not set # CONFIG_HID_EVISION is not set CONFIG_HID_EZKEY=y # CONFIG_HID_FT260 is not set # CONFIG_HID_GEMBIRD is not set # CONFIG_HID_GFRM is not set # CONFIG_HID_GLORIOUS is not set # CONFIG_HID_HOLTEK is not set # CONFIG_HID_GOOGLE_STADIA_FF is not set # CONFIG_HID_VIVALDI is not set # CONFIG_HID_GT683R is not set # CONFIG_HID_KEYTOUCH is not set # CONFIG_HID_KYE is not set # CONFIG_HID_KYSONA is not set # CONFIG_HID_UCLOGIC is not set # CONFIG_HID_WALTOP is not set # CONFIG_HID_VIEWSONIC is not set # CONFIG_HID_VRC2 is not set # CONFIG_HID_XIAOMI is not set CONFIG_HID_GYRATION=y # CONFIG_HID_ICADE is not set CONFIG_HID_ITE=y # CONFIG_HID_JABRA is not set # CONFIG_HID_TWINHAN is not set CONFIG_HID_KENSINGTON=y # CONFIG_HID_LCPOWER is not set # CONFIG_HID_LED is not set # CONFIG_HID_LENOVO is not set # CONFIG_HID_LETSKETCH is not set # CONFIG_HID_MAGICMOUSE is not set # CONFIG_HID_MALTRON is not set # CONFIG_HID_MAYFLASH is not set # CONFIG_HID_MEGAWORLD_FF is not set CONFIG_HID_REDRAGON=y CONFIG_HID_MICROSOFT=y CONFIG_HID_MONTEREY=y # CONFIG_HID_MULTITOUCH is not set # CONFIG_HID_NINTENDO is not set # CONFIG_HID_NTI is not set CONFIG_HID_NTRIG=y # CONFIG_HID_ORTEK is not set CONFIG_HID_PANTHERLORD=y CONFIG_PANTHERLORD_FF=y # CONFIG_HID_PENMOUNT is not set CONFIG_HID_PETALYNX=y # CONFIG_HID_PICOLCD is not set # CONFIG_HID_PLANTRONICS is not set # CONFIG_HID_PXRC is not set # CONFIG_HID_RAZER is not set # CONFIG_HID_PRIMAX is not set # CONFIG_HID_RETRODE is not set # CONFIG_HID_ROCCAT is not set # CONFIG_HID_SAITEK is not set CONFIG_HID_SAMSUNG=y # CONFIG_HID_SEMITEK is not set # CONFIG_HID_SIGMAMICRO is not set CONFIG_HID_SONY=y # CONFIG_SONY_FF is not set # CONFIG_HID_SPEEDLINK is not set # CONFIG_HID_STEAM is not set # CONFIG_HID_STEELSERIES is not set CONFIG_HID_SUNPLUS=y # CONFIG_HID_RMI is not set # CONFIG_HID_GREENASIA is not set # CONFIG_HID_SMARTJOYPLUS is not set # CONFIG_HID_TIVO is not set CONFIG_HID_TOPSEED=y # CONFIG_HID_TOPRE is not set # CONFIG_HID_THINGM is not set # CONFIG_HID_THRUSTMASTER is not set # CONFIG_HID_UDRAW_PS3 is not set # CONFIG_HID_U2FZERO is not set # CONFIG_HID_UNIVERSAL_PIDFF is not set # CONFIG_HID_WACOM is not set # CONFIG_HID_WIIMOTE is not set # CONFIG_HID_WINWING is not set # CONFIG_HID_XINMO is not set # CONFIG_HID_ZEROPLUS is not set # CONFIG_HID_ZYDACRON is not set # CONFIG_HID_SENSOR_HUB is not set # CONFIG_HID_ALPS is not set # CONFIG_HID_MCP2221 is not set # end of Special HID drivers # # HID-BPF support # # end of HID-BPF support CONFIG_I2C_HID=y # CONFIG_I2C_HID_ACPI is not set # CONFIG_I2C_HID_OF is not set # # Intel ISH HID support # # CONFIG_INTEL_ISH_HID is not set # end of Intel ISH HID support # # AMD SFH HID Support # # CONFIG_AMD_SFH_HID is not set # end of AMD SFH HID Support # # Intel THC HID Support # # CONFIG_INTEL_THC_HID is not set # end of Intel THC HID Support # # USB HID support # CONFIG_USB_HID=y CONFIG_HID_PID=y CONFIG_USB_HIDDEV=y # end of USB HID support CONFIG_USB_OHCI_LITTLE_ENDIAN=y CONFIG_USB_SUPPORT=y CONFIG_USB_COMMON=y # CONFIG_USB_LED_TRIG is not set # CONFIG_USB_ULPI_BUS is not set CONFIG_USB_ARCH_HAS_HCD=y CONFIG_USB=y CONFIG_USB_PCI=y CONFIG_USB_PCI_AMD=y CONFIG_USB_ANNOUNCE_NEW_DEVICES=y # # Miscellaneous USB options # CONFIG_USB_DEFAULT_PERSIST=y # CONFIG_USB_FEW_INIT_RETRIES is not set # CONFIG_USB_DYNAMIC_MINORS is not set # CONFIG_USB_OTG is not set # CONFIG_USB_OTG_PRODUCTLIST is not set # CONFIG_USB_OTG_DISABLE_EXTERNAL_HUB is not set # CONFIG_USB_LEDS_TRIGGER_USBPORT is not set CONFIG_USB_AUTOSUSPEND_DELAY=2 CONFIG_USB_DEFAULT_AUTHORIZATION_MODE=1 CONFIG_USB_MON=y # # USB Host Controller Drivers # # CONFIG_USB_C67X00_HCD is not set CONFIG_USB_XHCI_HCD=y # CONFIG_USB_XHCI_DBGCAP is not set CONFIG_USB_XHCI_PCI=y # CONFIG_USB_XHCI_PCI_RENESAS is not set # CONFIG_USB_XHCI_PLATFORM is not set CONFIG_USB_EHCI_HCD=y # CONFIG_USB_EHCI_ROOT_HUB_TT is not set CONFIG_USB_EHCI_TT_NEWSCHED=y CONFIG_USB_EHCI_PCI=y # CONFIG_USB_EHCI_FSL is not set # CONFIG_USB_EHCI_HCD_PLATFORM is not set # CONFIG_USB_OXU210HP_HCD is not set # CONFIG_USB_ISP116X_HCD is not set CONFIG_USB_OHCI_HCD=y CONFIG_USB_OHCI_HCD_PCI=y # CONFIG_USB_OHCI_HCD_PLATFORM is not set CONFIG_USB_UHCI_HCD=y # CONFIG_USB_SL811_HCD is not set # CONFIG_USB_R8A66597_HCD is not set # CONFIG_USB_HCD_TEST_MODE is not set # # USB Device Class drivers # # CONFIG_USB_ACM is not set CONFIG_USB_PRINTER=y # CONFIG_USB_WDM is not set # CONFIG_USB_TMC is not set # # NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may also be needed; see USB_STORAGE Help for more info # CONFIG_USB_STORAGE=y # CONFIG_USB_STORAGE_DEBUG is not set # CONFIG_USB_STORAGE_REALTEK is not set # CONFIG_USB_STORAGE_DATAFAB is not set # CONFIG_USB_STORAGE_FREECOM is not set # CONFIG_USB_STORAGE_ISD200 is not set # CONFIG_USB_STORAGE_USBAT is not set # CONFIG_USB_STORAGE_SDDR09 is not set # CONFIG_USB_STORAGE_SDDR55 is not set # CONFIG_USB_STORAGE_JUMPSHOT is not set # CONFIG_USB_STORAGE_ALAUDA is not set # CONFIG_USB_STORAGE_ONETOUCH is not set # CONFIG_USB_STORAGE_KARMA is not set # CONFIG_USB_STORAGE_CYPRESS_ATACB is not set # CONFIG_USB_STORAGE_ENE_UB6250 is not set # CONFIG_USB_UAS is not set # # USB Imaging devices # # CONFIG_USB_MDC800 is not set # CONFIG_USB_MICROTEK is not set # CONFIG_USBIP_CORE is not set # # USB dual-mode controller drivers # # CONFIG_USB_CDNS_SUPPORT is not set # CONFIG_USB_MUSB_HDRC is not set # CONFIG_USB_DWC3 is not set # CONFIG_USB_DWC2 is not set # CONFIG_USB_CHIPIDEA is not set # CONFIG_USB_ISP1760 is not set # # USB port drivers # # CONFIG_USB_SERIAL is not set # # USB Miscellaneous drivers # # CONFIG_USB_EMI62 is not set # CONFIG_USB_EMI26 is not set # CONFIG_USB_ADUTUX is not set # CONFIG_USB_SEVSEG is not set # CONFIG_USB_LEGOTOWER is not set # CONFIG_USB_LCD is not set # CONFIG_USB_CYPRESS_CY7C63 is not set # CONFIG_USB_CYTHERM is not set # CONFIG_USB_IDMOUSE is not set # CONFIG_USB_APPLEDISPLAY is not set # CONFIG_APPLE_MFI_FASTCHARGE is not set # CONFIG_USB_LJCA is not set # CONFIG_USB_SISUSBVGA is not set # CONFIG_USB_LD is not set # CONFIG_USB_TRANCEVIBRATOR is not set # CONFIG_USB_IOWARRIOR is not set # CONFIG_USB_TEST is not set # CONFIG_USB_EHSET_TEST_FIXTURE is not set # CONFIG_USB_ISIGHTFW is not set # CONFIG_USB_YUREX is not set # CONFIG_USB_EZUSB_FX2 is not set # CONFIG_USB_HUB_USB251XB is not set # CONFIG_USB_HSIC_USB3503 is not set # CONFIG_USB_HSIC_USB4604 is not set # CONFIG_USB_LINK_LAYER_TEST is not set # CONFIG_USB_CHAOSKEY is not set # # USB Physical Layer drivers # # CONFIG_NOP_USB_XCEIV is not set # CONFIG_USB_ISP1301 is not set # end of USB Physical Layer drivers # CONFIG_USB_GADGET is not set # CONFIG_TYPEC is not set # CONFIG_USB_ROLE_SWITCH is not set # CONFIG_MMC is not set # CONFIG_SCSI_UFSHCD is not set # CONFIG_MEMSTICK is not set CONFIG_NEW_LEDS=y CONFIG_LEDS_CLASS=y # CONFIG_LEDS_CLASS_FLASH is not set # CONFIG_LEDS_CLASS_MULTICOLOR is not set # CONFIG_LEDS_BRIGHTNESS_HW_CHANGED is not set # # LED drivers # # CONFIG_LEDS_APU is not set # CONFIG_LEDS_AW200XX is not set # CONFIG_LEDS_LM3530 is not set # CONFIG_LEDS_LM3532 is not set # CONFIG_LEDS_LM3642 is not set # CONFIG_LEDS_PCA9532 is not set # CONFIG_LEDS_LP3944 is not set # CONFIG_LEDS_PCA955X is not set # CONFIG_LEDS_PCA963X is not set # CONFIG_LEDS_PCA995X is not set # CONFIG_LEDS_BD2606MVV is not set # CONFIG_LEDS_BD2802 is not set # CONFIG_LEDS_INTEL_SS4200 is not set # CONFIG_LEDS_TCA6507 is not set # CONFIG_LEDS_TLC591XX is not set # CONFIG_LEDS_LM355x is not set # CONFIG_LEDS_IS31FL319X is not set # # LED driver for blink(1) USB RGB LED is under Special HID drivers (HID_THINGM) # # CONFIG_LEDS_BLINKM is not set # CONFIG_LEDS_MLXCPLD is not set # CONFIG_LEDS_MLXREG is not set # CONFIG_LEDS_USER is not set # CONFIG_LEDS_NIC78BX is not set # # Flash and Torch LED drivers # # # RGB LED drivers # # # LED Triggers # CONFIG_LEDS_TRIGGERS=y # CONFIG_LEDS_TRIGGER_TIMER is not set # CONFIG_LEDS_TRIGGER_ONESHOT is not set # CONFIG_LEDS_TRIGGER_DISK is not set # CONFIG_LEDS_TRIGGER_HEARTBEAT is not set # CONFIG_LEDS_TRIGGER_BACKLIGHT is not set # CONFIG_LEDS_TRIGGER_CPU is not set # CONFIG_LEDS_TRIGGER_ACTIVITY is not set # CONFIG_LEDS_TRIGGER_DEFAULT_ON is not set # # iptables trigger is under Netfilter config (LED target) # # CONFIG_LEDS_TRIGGER_TRANSIENT is not set # CONFIG_LEDS_TRIGGER_CAMERA is not set # CONFIG_LEDS_TRIGGER_PANIC is not set # CONFIG_LEDS_TRIGGER_NETDEV is not set # CONFIG_LEDS_TRIGGER_PATTERN is not set # CONFIG_LEDS_TRIGGER_TTY is not set # CONFIG_LEDS_TRIGGER_INPUT_EVENTS is not set # # Simatic LED drivers # # CONFIG_ACCESSIBILITY is not set # CONFIG_INFINIBAND is not set CONFIG_EDAC_ATOMIC_SCRUB=y CONFIG_EDAC_SUPPORT=y CONFIG_RTC_LIB=y CONFIG_RTC_MC146818_LIB=y CONFIG_RTC_CLASS=y # CONFIG_RTC_HCTOSYS is not set CONFIG_RTC_SYSTOHC=y CONFIG_RTC_SYSTOHC_DEVICE="rtc0" # CONFIG_RTC_DEBUG is not set CONFIG_RTC_NVMEM=y # # RTC interfaces # CONFIG_RTC_INTF_SYSFS=y CONFIG_RTC_INTF_PROC=y CONFIG_RTC_INTF_DEV=y # CONFIG_RTC_INTF_DEV_UIE_EMUL is not set # CONFIG_RTC_DRV_TEST is not set # # I2C RTC drivers # # CONFIG_RTC_DRV_ABB5ZES3 is not set # CONFIG_RTC_DRV_ABEOZ9 is not set # CONFIG_RTC_DRV_ABX80X is not set # CONFIG_RTC_DRV_DS1307 is not set # CONFIG_RTC_DRV_DS1374 is not set # CONFIG_RTC_DRV_DS1672 is not set # CONFIG_RTC_DRV_MAX6900 is not set # CONFIG_RTC_DRV_MAX31335 is not set # CONFIG_RTC_DRV_RS5C372 is not set # CONFIG_RTC_DRV_ISL1208 is not set # CONFIG_RTC_DRV_ISL12022 is not set # CONFIG_RTC_DRV_X1205 is not set # CONFIG_RTC_DRV_PCF8523 is not set # CONFIG_RTC_DRV_PCF85063 is not set # CONFIG_RTC_DRV_PCF85363 is not set # CONFIG_RTC_DRV_PCF8563 is not set # CONFIG_RTC_DRV_PCF8583 is not set # CONFIG_RTC_DRV_M41T80 is not set # CONFIG_RTC_DRV_BQ32K is not set # CONFIG_RTC_DRV_S35390A is not set # CONFIG_RTC_DRV_FM3130 is not set # CONFIG_RTC_DRV_RX8010 is not set # CONFIG_RTC_DRV_RX8111 is not set # CONFIG_RTC_DRV_RX8581 is not set # CONFIG_RTC_DRV_RX8025 is not set # CONFIG_RTC_DRV_EM3027 is not set # CONFIG_RTC_DRV_RV3028 is not set # CONFIG_RTC_DRV_RV3032 is not set # CONFIG_RTC_DRV_RV8803 is not set # CONFIG_RTC_DRV_SD2405AL is not set # CONFIG_RTC_DRV_SD3078 is not set # # SPI RTC drivers # CONFIG_RTC_I2C_AND_SPI=y # # SPI and I2C RTC drivers # # CONFIG_RTC_DRV_DS3232 is not set # CONFIG_RTC_DRV_PCF2127 is not set # CONFIG_RTC_DRV_RV3029C2 is not set # CONFIG_RTC_DRV_RX6110 is not set # # Platform RTC drivers # CONFIG_RTC_DRV_CMOS=y # CONFIG_RTC_DRV_DS1286 is not set # CONFIG_RTC_DRV_DS1511 is not set # CONFIG_RTC_DRV_DS1553 is not set # CONFIG_RTC_DRV_DS1685_FAMILY is not set # CONFIG_RTC_DRV_DS1742 is not set # CONFIG_RTC_DRV_DS2404 is not set # CONFIG_RTC_DRV_STK17TA8 is not set # CONFIG_RTC_DRV_M48T86 is not set # CONFIG_RTC_DRV_M48T35 is not set # CONFIG_RTC_DRV_M48T59 is not set # CONFIG_RTC_DRV_MSM6242 is not set # CONFIG_RTC_DRV_RP5C01 is not set # # on-CPU RTC drivers # # CONFIG_RTC_DRV_FTRTC010 is not set # # HID Sensor RTC drivers # # CONFIG_RTC_DRV_GOLDFISH is not set CONFIG_DMADEVICES=y # CONFIG_DMADEVICES_DEBUG is not set # # DMA Devices # CONFIG_DMA_ENGINE=y CONFIG_DMA_VIRTUAL_CHANNELS=y CONFIG_DMA_ACPI=y # CONFIG_ALTERA_MSGDMA is not set # CONFIG_INTEL_IDMA64 is not set # CONFIG_INTEL_IDXD is not set # CONFIG_INTEL_IDXD_COMPAT is not set # CONFIG_INTEL_IOATDMA is not set # CONFIG_PLX_DMA is not set # CONFIG_XILINX_DMA is not set # CONFIG_XILINX_XDMA is not set # CONFIG_AMD_PTDMA is not set # CONFIG_AMD_QDMA is not set # CONFIG_QCOM_HIDMA_MGMT is not set # CONFIG_QCOM_HIDMA is not set CONFIG_DW_DMAC_CORE=y # CONFIG_DW_DMAC is not set # CONFIG_DW_DMAC_PCI is not set # CONFIG_DW_EDMA is not set CONFIG_HSU_DMA=y # CONFIG_SF_PDMA is not set # CONFIG_INTEL_LDMA is not set # # DMA Clients # # CONFIG_ASYNC_TX_DMA is not set # CONFIG_DMATEST is not set # # DMABUF options # CONFIG_SYNC_FILE=y # CONFIG_SW_SYNC is not set # CONFIG_UDMABUF is not set # CONFIG_DMABUF_MOVE_NOTIFY is not set # CONFIG_DMABUF_DEBUG is not set # CONFIG_DMABUF_SELFTESTS is not set # CONFIG_DMABUF_HEAPS is not set # CONFIG_DMABUF_SYSFS_STATS is not set # end of DMABUF options # CONFIG_UIO is not set # CONFIG_VFIO is not set CONFIG_IRQ_BYPASS_MANAGER=y CONFIG_VIRT_DRIVERS=y CONFIG_VMGENID=y # CONFIG_VBOXGUEST is not set # CONFIG_NITRO_ENCLAVES is not set CONFIG_TSM_REPORTS=y # CONFIG_EFI_SECRET is not set CONFIG_SEV_GUEST=y CONFIG_VIRTIO_ANCHOR=y CONFIG_VIRTIO=y CONFIG_VIRTIO_PCI_LIB=y CONFIG_VIRTIO_PCI_LIB_LEGACY=y CONFIG_VIRTIO_MENU=y CONFIG_VIRTIO_PCI=y CONFIG_VIRTIO_PCI_ADMIN_LEGACY=y CONFIG_VIRTIO_PCI_LEGACY=y # CONFIG_VIRTIO_BALLOON is not set CONFIG_VIRTIO_MEM=y CONFIG_VIRTIO_INPUT=y # CONFIG_VIRTIO_MMIO is not set CONFIG_VIRTIO_DMA_SHARED_BUFFER=y # CONFIG_VIRTIO_DEBUG is not set # CONFIG_VDPA is not set CONFIG_VHOST_TASK=y CONFIG_VHOST_MENU=y # CONFIG_VHOST_NET is not set # CONFIG_VHOST_CROSS_ENDIAN_LEGACY is not set # # Microsoft Hyper-V guest support # # CONFIG_HYPERV is not set # end of Microsoft Hyper-V guest support # CONFIG_GREYBUS is not set # CONFIG_COMEDI is not set # CONFIG_STAGING is not set # CONFIG_GOLDFISH is not set # CONFIG_CHROME_PLATFORMS is not set # CONFIG_MELLANOX_PLATFORM is not set CONFIG_SURFACE_PLATFORMS=y # CONFIG_SURFACE_3_POWER_OPREGION is not set # CONFIG_SURFACE_GPE is not set # CONFIG_SURFACE_PRO3_BUTTON is not set CONFIG_X86_PLATFORM_DEVICES=y CONFIG_ACPI_WMI=y CONFIG_WMI_BMOF=y # CONFIG_HUAWEI_WMI is not set # CONFIG_MXM_WMI is not set # CONFIG_NVIDIA_WMI_EC_BACKLIGHT is not set # CONFIG_XIAOMI_WMI is not set # CONFIG_GIGABYTE_WMI is not set # CONFIG_YOGABOOK is not set # CONFIG_ACERHDF is not set # CONFIG_ACER_WIRELESS is not set # CONFIG_ACER_WMI is not set # # AMD HSMP Driver # # CONFIG_AMD_HSMP_ACPI is not set # CONFIG_AMD_HSMP_PLAT is not set # end of AMD HSMP Driver # CONFIG_AMD_PMC is not set # CONFIG_AMD_3D_VCACHE is not set # CONFIG_AMD_WBRF is not set # CONFIG_ADV_SWBUTTON is not set # CONFIG_APPLE_GMUX is not set # CONFIG_ASUS_LAPTOP is not set # CONFIG_ASUS_WIRELESS is not set # CONFIG_ASUS_WMI is not set CONFIG_EEEPC_LAPTOP=y # CONFIG_X86_PLATFORM_DRIVERS_DELL is not set # CONFIG_AMILO_RFKILL is not set # CONFIG_FUJITSU_LAPTOP is not set # CONFIG_FUJITSU_TABLET is not set # CONFIG_GPD_POCKET_FAN is not set # CONFIG_X86_PLATFORM_DRIVERS_HP is not set # CONFIG_WIRELESS_HOTKEY is not set # CONFIG_IBM_RTL is not set # CONFIG_IDEAPAD_LAPTOP is not set # CONFIG_LENOVO_WMI_HOTKEY_UTILITIES is not set # CONFIG_SENSORS_HDAPS is not set # CONFIG_THINKPAD_ACPI is not set # CONFIG_THINKPAD_LMI is not set # CONFIG_INTEL_ATOMISP2_PM is not set # CONFIG_INTEL_IFS is not set # CONFIG_INTEL_SAR_INT1092 is not set # # Intel Speed Select Technology interface support # # CONFIG_INTEL_SPEED_SELECT_INTERFACE is not set # end of Intel Speed Select Technology interface support # CONFIG_INTEL_WMI_SBL_FW_UPDATE is not set # CONFIG_INTEL_WMI_THUNDERBOLT is not set # # Intel Uncore Frequency Control # # CONFIG_INTEL_UNCORE_FREQ_CONTROL is not set # end of Intel Uncore Frequency Control # CONFIG_INTEL_HID_EVENT is not set # CONFIG_INTEL_VBTN is not set # CONFIG_INTEL_OAKTRAIL is not set # CONFIG_INTEL_PUNIT_IPC is not set # CONFIG_INTEL_RST is not set # CONFIG_INTEL_SMARTCONNECT is not set # CONFIG_INTEL_TURBO_MAX_3 is not set # CONFIG_INTEL_VSEC is not set # CONFIG_ACPI_QUICKSTART is not set # CONFIG_MSI_EC is not set # CONFIG_MSI_LAPTOP is not set # CONFIG_MSI_WMI is not set # CONFIG_MSI_WMI_PLATFORM is not set # CONFIG_SAMSUNG_GALAXYBOOK is not set # CONFIG_SAMSUNG_LAPTOP is not set # CONFIG_SAMSUNG_Q10 is not set # CONFIG_TOSHIBA_BT_RFKILL is not set # CONFIG_TOSHIBA_HAPS is not set # CONFIG_TOSHIBA_WMI is not set # CONFIG_ACPI_CMPC is not set # CONFIG_COMPAL_LAPTOP is not set # CONFIG_LG_LAPTOP is not set # CONFIG_PANASONIC_LAPTOP is not set # CONFIG_SONY_LAPTOP is not set # CONFIG_SYSTEM76_ACPI is not set # CONFIG_TOPSTAR_LAPTOP is not set # CONFIG_SERIAL_MULTI_INSTANTIATE is not set # CONFIG_INSPUR_PLATFORM_PROFILE is not set # CONFIG_LENOVO_WMI_CAMERA is not set # CONFIG_INTEL_IPS is not set # CONFIG_INTEL_SCU_PCI is not set # CONFIG_INTEL_SCU_PLATFORM is not set # CONFIG_SIEMENS_SIMATIC_IPC is not set # CONFIG_WINMATE_FM07_KEYS is not set CONFIG_P2SB=y CONFIG_HAVE_CLK=y CONFIG_HAVE_CLK_PREPARE=y CONFIG_COMMON_CLK=y # CONFIG_COMMON_CLK_MAX9485 is not set # CONFIG_COMMON_CLK_SI5341 is not set # CONFIG_COMMON_CLK_SI5351 is not set # CONFIG_COMMON_CLK_SI544 is not set # CONFIG_COMMON_CLK_CDCE706 is not set # CONFIG_COMMON_CLK_CS2000_CP is not set # CONFIG_XILINX_VCU is not set # CONFIG_HWSPINLOCK is not set # # Clock Source drivers # CONFIG_CLKEVT_I8253=y CONFIG_I8253_LOCK=y CONFIG_CLKBLD_I8253=y # end of Clock Source drivers CONFIG_MAILBOX=y CONFIG_PCC=y # CONFIG_ALTERA_MBOX is not set CONFIG_IOMMU_IOVA=y CONFIG_IOMMU_API=y CONFIG_IOMMU_SUPPORT=y # # Generic IOMMU Pagetable Support # CONFIG_IOMMU_IO_PGTABLE=y # end of Generic IOMMU Pagetable Support # CONFIG_IOMMU_DEBUGFS is not set # CONFIG_IOMMU_DEFAULT_DMA_STRICT is not set CONFIG_IOMMU_DEFAULT_DMA_LAZY=y # CONFIG_IOMMU_DEFAULT_PASSTHROUGH is not set CONFIG_IOMMU_DMA=y CONFIG_IOMMU_SVA=y CONFIG_IOMMU_IOPF=y CONFIG_AMD_IOMMU=y CONFIG_DMAR_TABLE=y CONFIG_INTEL_IOMMU=y # CONFIG_INTEL_IOMMU_SVM is not set # CONFIG_INTEL_IOMMU_DEFAULT_ON is not set CONFIG_INTEL_IOMMU_FLOPPY_WA=y CONFIG_INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON=y CONFIG_INTEL_IOMMU_PERF_EVENTS=y # CONFIG_IOMMUFD is not set # CONFIG_IRQ_REMAP is not set # CONFIG_VIRTIO_IOMMU is not set # # Remoteproc drivers # # CONFIG_REMOTEPROC is not set # end of Remoteproc drivers # # Rpmsg drivers # # CONFIG_RPMSG_QCOM_GLINK_RPM is not set # CONFIG_RPMSG_VIRTIO is not set # end of Rpmsg drivers # # SOC (System On Chip) specific Drivers # # # Amlogic SoC drivers # # end of Amlogic SoC drivers # # Broadcom SoC drivers # # end of Broadcom SoC drivers # # NXP/Freescale QorIQ SoC drivers # # end of NXP/Freescale QorIQ SoC drivers # # fujitsu SoC drivers # # end of fujitsu SoC drivers # # i.MX SoC drivers # # end of i.MX SoC drivers # # Enable LiteX SoC Builder specific drivers # # end of Enable LiteX SoC Builder specific drivers # CONFIG_WPCM450_SOC is not set # # Qualcomm SoC drivers # # end of Qualcomm SoC drivers # CONFIG_SOC_TI is not set # # Xilinx SoC drivers # # end of Xilinx SoC drivers # end of SOC (System On Chip) specific Drivers # # PM Domains # # # Amlogic PM Domains # # end of Amlogic PM Domains # # Broadcom PM Domains # # end of Broadcom PM Domains # # i.MX PM Domains # # end of i.MX PM Domains # # Qualcomm PM Domains # # end of Qualcomm PM Domains # end of PM Domains # CONFIG_PM_DEVFREQ is not set # CONFIG_EXTCON is not set # CONFIG_MEMORY is not set # CONFIG_IIO is not set # CONFIG_NTB is not set # CONFIG_PWM is not set # # IRQ chip support # # end of IRQ chip support # CONFIG_IPACK_BUS is not set # CONFIG_RESET_CONTROLLER is not set # # PHY Subsystem # # CONFIG_GENERIC_PHY is not set # CONFIG_USB_LGM_PHY is not set # CONFIG_PHY_CAN_TRANSCEIVER is not set # # PHY drivers for Broadcom platforms # # CONFIG_BCM_KONA_USB2_PHY is not set # end of PHY drivers for Broadcom platforms # CONFIG_PHY_PXA_28NM_HSIC is not set # CONFIG_PHY_PXA_28NM_USB2 is not set # CONFIG_PHY_INTEL_LGM_EMMC is not set # end of PHY Subsystem # CONFIG_POWERCAP is not set # CONFIG_MCB is not set # # Performance monitor support # # CONFIG_DWC_PCIE_PMU is not set # end of Performance monitor support # CONFIG_RAS is not set # CONFIG_USB4 is not set # # Android # # CONFIG_ANDROID_BINDER_IPC is not set # end of Android # CONFIG_LIBNVDIMM is not set # CONFIG_DAX is not set CONFIG_NVMEM=y CONFIG_NVMEM_SYSFS=y # CONFIG_NVMEM_LAYOUTS is not set # CONFIG_NVMEM_RMEM is not set # # HW tracing support # # CONFIG_STM is not set # CONFIG_INTEL_TH is not set # end of HW tracing support # CONFIG_FPGA is not set # CONFIG_TEE is not set # CONFIG_SIOX is not set # CONFIG_SLIMBUS is not set # CONFIG_INTERCONNECT is not set # CONFIG_COUNTER is not set # CONFIG_MOST is not set # CONFIG_PECI is not set # CONFIG_HTE is not set # end of Device Drivers # # File systems # CONFIG_DCACHE_WORD_ACCESS=y # CONFIG_VALIDATE_FS_PARSER is not set CONFIG_FS_IOMAP=y CONFIG_BUFFER_HEAD=y CONFIG_LEGACY_DIRECT_IO=y # CONFIG_EXT2_FS is not set # CONFIG_EXT3_FS is not set CONFIG_EXT4_FS=y CONFIG_EXT4_USE_FOR_EXT2=y CONFIG_EXT4_FS_POSIX_ACL=y CONFIG_EXT4_FS_SECURITY=y # CONFIG_EXT4_DEBUG is not set CONFIG_JBD2=y # CONFIG_JBD2_DEBUG is not set CONFIG_FS_MBCACHE=y # CONFIG_JFS_FS is not set # CONFIG_XFS_FS is not set # CONFIG_GFS2_FS is not set # CONFIG_OCFS2_FS is not set # CONFIG_BTRFS_FS is not set # CONFIG_NILFS2_FS is not set # CONFIG_F2FS_FS is not set # CONFIG_BCACHEFS_FS is not set # CONFIG_FS_DAX is not set CONFIG_FS_POSIX_ACL=y CONFIG_EXPORTFS=y # CONFIG_EXPORTFS_BLOCK_OPS is not set CONFIG_FILE_LOCKING=y # CONFIG_FS_ENCRYPTION is not set # CONFIG_FS_VERITY is not set CONFIG_FSNOTIFY=y CONFIG_DNOTIFY=y CONFIG_INOTIFY_USER=y CONFIG_FANOTIFY=y CONFIG_FANOTIFY_ACCESS_PERMISSIONS=y CONFIG_QUOTA=y CONFIG_QUOTA_NETLINK_INTERFACE=y # CONFIG_QUOTA_DEBUG is not set CONFIG_QUOTA_TREE=y # CONFIG_QFMT_V1 is not set CONFIG_QFMT_V2=y CONFIG_QUOTACTL=y CONFIG_AUTOFS_FS=y # CONFIG_FUSE_FS is not set # CONFIG_OVERLAY_FS is not set # # Caches # CONFIG_NETFS_SUPPORT=y # CONFIG_NETFS_STATS is not set # CONFIG_NETFS_DEBUG is not set # CONFIG_FSCACHE is not set # end of Caches # # CD-ROM/DVD Filesystems # CONFIG_ISO9660_FS=y CONFIG_JOLIET=y CONFIG_ZISOFS=y # CONFIG_UDF_FS is not set # end of CD-ROM/DVD Filesystems # # DOS/FAT/EXFAT/NT Filesystems # CONFIG_FAT_FS=y CONFIG_MSDOS_FS=y CONFIG_VFAT_FS=y CONFIG_FAT_DEFAULT_CODEPAGE=437 CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1" # CONFIG_FAT_DEFAULT_UTF8 is not set # CONFIG_EXFAT_FS is not set # CONFIG_NTFS3_FS is not set # CONFIG_NTFS_FS is not set # end of DOS/FAT/EXFAT/NT Filesystems # # Pseudo filesystems # CONFIG_PROC_FS=y CONFIG_PROC_KCORE=y CONFIG_PROC_VMCORE=y # CONFIG_PROC_VMCORE_DEVICE_DUMP is not set CONFIG_PROC_SYSCTL=y CONFIG_PROC_PAGE_MONITOR=y # CONFIG_PROC_CHILDREN is not set CONFIG_PROC_PID_ARCH_STATUS=y CONFIG_KERNFS=y CONFIG_SYSFS=y CONFIG_TMPFS=y CONFIG_TMPFS_POSIX_ACL=y CONFIG_TMPFS_XATTR=y # CONFIG_TMPFS_INODE64 is not set # CONFIG_TMPFS_QUOTA is not set CONFIG_HUGETLBFS=y # CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON is not set CONFIG_HUGETLB_PAGE=y CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP=y CONFIG_HUGETLB_PMD_PAGE_TABLE_SHARING=y CONFIG_ARCH_HAS_GIGANTIC_PAGE=y CONFIG_CONFIGFS_FS=y CONFIG_EFIVAR_FS=m # end of Pseudo filesystems CONFIG_MISC_FILESYSTEMS=y # CONFIG_ORANGEFS_FS is not set # CONFIG_ADFS_FS is not set # CONFIG_AFFS_FS is not set # CONFIG_ECRYPT_FS is not set # CONFIG_HFS_FS is not set # CONFIG_HFSPLUS_FS is not set # CONFIG_BEFS_FS is not set # CONFIG_BFS_FS is not set # CONFIG_EFS_FS is not set # CONFIG_CRAMFS is not set # CONFIG_SQUASHFS is not set # CONFIG_VXFS_FS is not set # CONFIG_MINIX_FS is not set # CONFIG_OMFS_FS is not set # CONFIG_HPFS_FS is not set # CONFIG_QNX4FS_FS is not set # CONFIG_QNX6FS_FS is not set # CONFIG_ROMFS_FS is not set # CONFIG_PSTORE is not set # CONFIG_UFS_FS is not set # CONFIG_EROFS_FS is not set CONFIG_NETWORK_FILESYSTEMS=y CONFIG_NFS_FS=y CONFIG_NFS_V2=y CONFIG_NFS_V3=y CONFIG_NFS_V3_ACL=y CONFIG_NFS_V4=y # CONFIG_NFS_SWAP is not set # CONFIG_NFS_V4_1 is not set CONFIG_ROOT_NFS=y # CONFIG_NFS_FSCACHE is not set # CONFIG_NFS_USE_LEGACY_DNS is not set CONFIG_NFS_USE_KERNEL_DNS=y CONFIG_NFS_DISABLE_UDP_SUPPORT=y # CONFIG_NFSD is not set CONFIG_GRACE_PERIOD=y CONFIG_LOCKD=y CONFIG_LOCKD_V4=y CONFIG_NFS_ACL_SUPPORT=y CONFIG_NFS_COMMON=y CONFIG_SUNRPC=y CONFIG_SUNRPC_GSS=y CONFIG_RPCSEC_GSS_KRB5=y # CONFIG_SUNRPC_DEBUG is not set # CONFIG_CEPH_FS is not set # CONFIG_CIFS is not set # CONFIG_SMB_SERVER is not set # CONFIG_CODA_FS is not set # CONFIG_AFS_FS is not set CONFIG_9P_FS=y # CONFIG_9P_FS_POSIX_ACL is not set # CONFIG_9P_FS_SECURITY is not set CONFIG_NLS=y CONFIG_NLS_DEFAULT="utf8" CONFIG_NLS_CODEPAGE_437=y # CONFIG_NLS_CODEPAGE_737 is not set # CONFIG_NLS_CODEPAGE_775 is not set # CONFIG_NLS_CODEPAGE_850 is not set # CONFIG_NLS_CODEPAGE_852 is not set # CONFIG_NLS_CODEPAGE_855 is not set # CONFIG_NLS_CODEPAGE_857 is not set # CONFIG_NLS_CODEPAGE_860 is not set # CONFIG_NLS_CODEPAGE_861 is not set # CONFIG_NLS_CODEPAGE_862 is not set # CONFIG_NLS_CODEPAGE_863 is not set # CONFIG_NLS_CODEPAGE_864 is not set # CONFIG_NLS_CODEPAGE_865 is not set # CONFIG_NLS_CODEPAGE_866 is not set # CONFIG_NLS_CODEPAGE_869 is not set # CONFIG_NLS_CODEPAGE_936 is not set # CONFIG_NLS_CODEPAGE_950 is not set # CONFIG_NLS_CODEPAGE_932 is not set # CONFIG_NLS_CODEPAGE_949 is not set # CONFIG_NLS_CODEPAGE_874 is not set # CONFIG_NLS_ISO8859_8 is not set # CONFIG_NLS_CODEPAGE_1250 is not set # CONFIG_NLS_CODEPAGE_1251 is not set CONFIG_NLS_ASCII=y CONFIG_NLS_ISO8859_1=y # CONFIG_NLS_ISO8859_2 is not set # CONFIG_NLS_ISO8859_3 is not set # CONFIG_NLS_ISO8859_4 is not set # CONFIG_NLS_ISO8859_5 is not set # CONFIG_NLS_ISO8859_6 is not set # CONFIG_NLS_ISO8859_7 is not set # CONFIG_NLS_ISO8859_9 is not set # CONFIG_NLS_ISO8859_13 is not set # CONFIG_NLS_ISO8859_14 is not set # CONFIG_NLS_ISO8859_15 is not set # CONFIG_NLS_KOI8_R is not set # CONFIG_NLS_KOI8_U is not set # CONFIG_NLS_MAC_ROMAN is not set # CONFIG_NLS_MAC_CELTIC is not set # CONFIG_NLS_MAC_CENTEURO is not set # CONFIG_NLS_MAC_CROATIAN is not set # CONFIG_NLS_MAC_CYRILLIC is not set # CONFIG_NLS_MAC_GAELIC is not set # CONFIG_NLS_MAC_GREEK is not set # CONFIG_NLS_MAC_ICELAND is not set # CONFIG_NLS_MAC_INUIT is not set # CONFIG_NLS_MAC_ROMANIAN is not set # CONFIG_NLS_MAC_TURKISH is not set CONFIG_NLS_UTF8=y # CONFIG_DLM is not set # CONFIG_UNICODE is not set CONFIG_IO_WQ=y # end of File systems # # Security options # CONFIG_KEYS=y # CONFIG_KEYS_REQUEST_CACHE is not set # CONFIG_PERSISTENT_KEYRINGS is not set # CONFIG_BIG_KEYS is not set # CONFIG_TRUSTED_KEYS is not set # CONFIG_ENCRYPTED_KEYS is not set # CONFIG_KEY_DH_OPERATIONS is not set # CONFIG_SECURITY_DMESG_RESTRICT is not set CONFIG_PROC_MEM_ALWAYS_FORCE=y # CONFIG_PROC_MEM_FORCE_PTRACE is not set # CONFIG_PROC_MEM_NO_FORCE is not set # CONFIG_MSEAL_SYSTEM_MAPPINGS is not set CONFIG_SECURITY=y CONFIG_HAS_SECURITY_AUDIT=y # CONFIG_SECURITYFS is not set CONFIG_SECURITY_NETWORK=y # CONFIG_SECURITY_NETWORK_XFRM is not set # CONFIG_SECURITY_PATH is not set # CONFIG_INTEL_TXT is not set CONFIG_LSM_MMAP_MIN_ADDR=65536 # CONFIG_STATIC_USERMODEHELPER is not set CONFIG_SECURITY_SELINUX=y CONFIG_SECURITY_SELINUX_BOOTPARAM=y CONFIG_SECURITY_SELINUX_DEVELOP=y CONFIG_SECURITY_SELINUX_AVC_STATS=y CONFIG_SECURITY_SELINUX_SIDTAB_HASH_BITS=9 CONFIG_SECURITY_SELINUX_SID2STR_CACHE_SIZE=256 # CONFIG_SECURITY_SELINUX_DEBUG is not set # CONFIG_SECURITY_SMACK is not set # CONFIG_SECURITY_TOMOYO is not set # CONFIG_SECURITY_APPARMOR is not set # CONFIG_SECURITY_LOADPIN is not set # CONFIG_SECURITY_YAMA is not set # CONFIG_SECURITY_SAFESETID is not set # CONFIG_SECURITY_LOCKDOWN_LSM is not set # CONFIG_SECURITY_LANDLOCK is not set CONFIG_INTEGRITY=y CONFIG_INTEGRITY_SIGNATURE=y # CONFIG_INTEGRITY_ASYMMETRIC_KEYS is not set CONFIG_INTEGRITY_AUDIT=y # CONFIG_IMA is not set # CONFIG_IMA_SECURE_AND_OR_TRUSTED_BOOT is not set # CONFIG_EVM is not set CONFIG_DEFAULT_SECURITY_SELINUX=y # CONFIG_DEFAULT_SECURITY_DAC is not set CONFIG_LSM="landlock,lockdown,yama,loadpin,safesetid,integrity,selinux,smack,tomoyo,apparmor,bpf" # # Kernel hardening options # # # Memory initialization # CONFIG_INIT_STACK_NONE=y # CONFIG_INIT_ON_ALLOC_DEFAULT_ON is not set # CONFIG_INIT_ON_FREE_DEFAULT_ON is not set CONFIG_CC_HAS_ZERO_CALL_USED_REGS=y # CONFIG_ZERO_CALL_USED_REGS is not set # end of Memory initialization # # Bounds checking # # CONFIG_FORTIFY_SOURCE is not set # CONFIG_HARDENED_USERCOPY is not set # end of Bounds checking # # Hardening of kernel data structures # # CONFIG_LIST_HARDENED is not set # CONFIG_BUG_ON_DATA_CORRUPTION is not set # end of Hardening of kernel data structures CONFIG_RANDSTRUCT_NONE=y # end of Kernel hardening options # end of Security options CONFIG_CRYPTO=y # # Crypto core or helper # CONFIG_CRYPTO_ALGAPI=y CONFIG_CRYPTO_ALGAPI2=y CONFIG_CRYPTO_AEAD=y CONFIG_CRYPTO_AEAD2=y CONFIG_CRYPTO_SIG=y CONFIG_CRYPTO_SIG2=y CONFIG_CRYPTO_SKCIPHER=y CONFIG_CRYPTO_SKCIPHER2=y CONFIG_CRYPTO_HASH=y CONFIG_CRYPTO_HASH2=y CONFIG_CRYPTO_RNG=y CONFIG_CRYPTO_RNG2=y CONFIG_CRYPTO_RNG_DEFAULT=y CONFIG_CRYPTO_AKCIPHER2=y CONFIG_CRYPTO_AKCIPHER=y CONFIG_CRYPTO_KPP2=y CONFIG_CRYPTO_ACOMP2=y CONFIG_CRYPTO_MANAGER=y CONFIG_CRYPTO_MANAGER2=y # CONFIG_CRYPTO_USER is not set CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=y CONFIG_CRYPTO_NULL=y CONFIG_CRYPTO_NULL2=y # CONFIG_CRYPTO_PCRYPT is not set # CONFIG_CRYPTO_CRYPTD is not set CONFIG_CRYPTO_AUTHENC=y # CONFIG_CRYPTO_KRB5ENC is not set # CONFIG_CRYPTO_TEST is not set # end of Crypto core or helper # # Public-key cryptography # CONFIG_CRYPTO_RSA=y # CONFIG_CRYPTO_DH is not set # CONFIG_CRYPTO_ECDH is not set # CONFIG_CRYPTO_ECDSA is not set # CONFIG_CRYPTO_ECRDSA is not set # CONFIG_CRYPTO_CURVE25519 is not set # end of Public-key cryptography # # Block ciphers # CONFIG_CRYPTO_AES=y # CONFIG_CRYPTO_AES_TI is not set # CONFIG_CRYPTO_ARIA is not set # CONFIG_CRYPTO_BLOWFISH is not set # CONFIG_CRYPTO_CAMELLIA is not set # CONFIG_CRYPTO_CAST5 is not set # CONFIG_CRYPTO_CAST6 is not set # CONFIG_CRYPTO_DES is not set # CONFIG_CRYPTO_FCRYPT is not set # CONFIG_CRYPTO_SERPENT is not set # CONFIG_CRYPTO_SM4_GENERIC is not set # CONFIG_CRYPTO_TWOFISH is not set # end of Block ciphers # # Length-preserving ciphers and modes # # CONFIG_CRYPTO_ADIANTUM is not set # CONFIG_CRYPTO_CHACHA20 is not set CONFIG_CRYPTO_CBC=y CONFIG_CRYPTO_CTR=y # CONFIG_CRYPTO_CTS is not set CONFIG_CRYPTO_ECB=y # CONFIG_CRYPTO_HCTR2 is not set # CONFIG_CRYPTO_LRW is not set # CONFIG_CRYPTO_PCBC is not set # CONFIG_CRYPTO_XTS is not set # end of Length-preserving ciphers and modes # # AEAD (authenticated encryption with associated data) ciphers # # CONFIG_CRYPTO_AEGIS128 is not set # CONFIG_CRYPTO_CHACHA20POLY1305 is not set CONFIG_CRYPTO_CCM=y CONFIG_CRYPTO_GCM=y CONFIG_CRYPTO_GENIV=y CONFIG_CRYPTO_SEQIV=y CONFIG_CRYPTO_ECHAINIV=y # CONFIG_CRYPTO_ESSIV is not set # end of AEAD (authenticated encryption with associated data) ciphers # # Hashes, digests, and MACs # # CONFIG_CRYPTO_BLAKE2B is not set CONFIG_CRYPTO_CMAC=y CONFIG_CRYPTO_GHASH=y CONFIG_CRYPTO_HMAC=y # CONFIG_CRYPTO_MD4 is not set CONFIG_CRYPTO_MD5=y # CONFIG_CRYPTO_MICHAEL_MIC is not set # CONFIG_CRYPTO_POLY1305 is not set # CONFIG_CRYPTO_RMD160 is not set CONFIG_CRYPTO_SHA1=y CONFIG_CRYPTO_SHA256=y CONFIG_CRYPTO_SHA512=y CONFIG_CRYPTO_SHA3=y # CONFIG_CRYPTO_SM3_GENERIC is not set # CONFIG_CRYPTO_STREEBOG is not set # CONFIG_CRYPTO_WP512 is not set # CONFIG_CRYPTO_XCBC is not set # CONFIG_CRYPTO_XXHASH is not set # end of Hashes, digests, and MACs # # CRCs (cyclic redundancy checks) # CONFIG_CRYPTO_CRC32C=y # CONFIG_CRYPTO_CRC32 is not set # end of CRCs (cyclic redundancy checks) # # Compression # # CONFIG_CRYPTO_DEFLATE is not set CONFIG_CRYPTO_LZO=y # CONFIG_CRYPTO_842 is not set # CONFIG_CRYPTO_LZ4 is not set # CONFIG_CRYPTO_LZ4HC is not set # CONFIG_CRYPTO_ZSTD is not set # end of Compression # # Random number generation # # CONFIG_CRYPTO_ANSI_CPRNG is not set CONFIG_CRYPTO_DRBG_MENU=y CONFIG_CRYPTO_DRBG_HMAC=y # CONFIG_CRYPTO_DRBG_HASH is not set # CONFIG_CRYPTO_DRBG_CTR is not set CONFIG_CRYPTO_DRBG=y CONFIG_CRYPTO_JITTERENTROPY=y CONFIG_CRYPTO_JITTERENTROPY_MEMORY_BLOCKS=64 CONFIG_CRYPTO_JITTERENTROPY_MEMORY_BLOCKSIZE=32 CONFIG_CRYPTO_JITTERENTROPY_OSR=1 # end of Random number generation # # Userspace interface # # CONFIG_CRYPTO_USER_API_HASH is not set # CONFIG_CRYPTO_USER_API_SKCIPHER is not set # CONFIG_CRYPTO_USER_API_RNG is not set # CONFIG_CRYPTO_USER_API_AEAD is not set # end of Userspace interface CONFIG_CRYPTO_HASH_INFO=y # # Accelerated Cryptographic Algorithms for CPU (x86) # # CONFIG_CRYPTO_AES_NI_INTEL is not set # CONFIG_CRYPTO_BLOWFISH_X86_64 is not set # CONFIG_CRYPTO_CAMELLIA_X86_64 is not set # CONFIG_CRYPTO_CAMELLIA_AESNI_AVX_X86_64 is not set # CONFIG_CRYPTO_CAMELLIA_AESNI_AVX2_X86_64 is not set # CONFIG_CRYPTO_CAST5_AVX_X86_64 is not set # CONFIG_CRYPTO_CAST6_AVX_X86_64 is not set # CONFIG_CRYPTO_DES3_EDE_X86_64 is not set # CONFIG_CRYPTO_SERPENT_SSE2_X86_64 is not set # CONFIG_CRYPTO_SERPENT_AVX_X86_64 is not set # CONFIG_CRYPTO_SERPENT_AVX2_X86_64 is not set # CONFIG_CRYPTO_SM4_AESNI_AVX_X86_64 is not set # CONFIG_CRYPTO_SM4_AESNI_AVX2_X86_64 is not set # CONFIG_CRYPTO_TWOFISH_X86_64 is not set # CONFIG_CRYPTO_TWOFISH_X86_64_3WAY is not set # CONFIG_CRYPTO_TWOFISH_AVX_X86_64 is not set # CONFIG_CRYPTO_ARIA_AESNI_AVX_X86_64 is not set # CONFIG_CRYPTO_ARIA_AESNI_AVX2_X86_64 is not set # CONFIG_CRYPTO_ARIA_GFNI_AVX512_X86_64 is not set # CONFIG_CRYPTO_AEGIS128_AESNI_SSE2 is not set # CONFIG_CRYPTO_NHPOLY1305_SSE2 is not set # CONFIG_CRYPTO_NHPOLY1305_AVX2 is not set # CONFIG_CRYPTO_BLAKE2S_X86 is not set # CONFIG_CRYPTO_POLYVAL_CLMUL_NI is not set # CONFIG_CRYPTO_SHA1_SSSE3 is not set # CONFIG_CRYPTO_SHA256_SSSE3 is not set # CONFIG_CRYPTO_SHA512_SSSE3 is not set # CONFIG_CRYPTO_SM3_AVX_X86_64 is not set # CONFIG_CRYPTO_GHASH_CLMUL_NI_INTEL is not set # end of Accelerated Cryptographic Algorithms for CPU (x86) CONFIG_CRYPTO_HW=y # CONFIG_CRYPTO_DEV_PADLOCK is not set # CONFIG_CRYPTO_DEV_ATMEL_ECC is not set # CONFIG_CRYPTO_DEV_ATMEL_SHA204A is not set CONFIG_CRYPTO_DEV_CCP=y CONFIG_CRYPTO_DEV_CCP_DD=y CONFIG_CRYPTO_DEV_SP_CCP=y CONFIG_CRYPTO_DEV_CCP_CRYPTO=m CONFIG_CRYPTO_DEV_SP_PSP=y # CONFIG_CRYPTO_DEV_CCP_DEBUGFS is not set # CONFIG_CRYPTO_DEV_NITROX_CNN55XX is not set # CONFIG_CRYPTO_DEV_QAT_DH895xCC is not set # CONFIG_CRYPTO_DEV_QAT_C3XXX is not set # CONFIG_CRYPTO_DEV_QAT_C62X is not set # CONFIG_CRYPTO_DEV_QAT_4XXX is not set # CONFIG_CRYPTO_DEV_QAT_420XX is not set # CONFIG_CRYPTO_DEV_QAT_DH895xCCVF is not set # CONFIG_CRYPTO_DEV_QAT_C3XXXVF is not set # CONFIG_CRYPTO_DEV_QAT_C62XVF is not set # CONFIG_CRYPTO_DEV_VIRTIO is not set # CONFIG_CRYPTO_DEV_SAFEXCEL is not set # CONFIG_CRYPTO_DEV_AMLOGIC_GXL is not set CONFIG_ASYMMETRIC_KEY_TYPE=y CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=y CONFIG_X509_CERTIFICATE_PARSER=y # CONFIG_PKCS8_PRIVATE_KEY_PARSER is not set CONFIG_PKCS7_MESSAGE_PARSER=y # CONFIG_PKCS7_TEST_KEY is not set # CONFIG_SIGNED_PE_FILE_VERIFICATION is not set # CONFIG_FIPS_SIGNATURE_SELFTEST is not set # # Certificates for signature checking # CONFIG_SYSTEM_TRUSTED_KEYRING=y CONFIG_SYSTEM_TRUSTED_KEYS="" # CONFIG_SYSTEM_EXTRA_CERTIFICATE is not set # CONFIG_SECONDARY_TRUSTED_KEYRING is not set # CONFIG_SYSTEM_BLACKLIST_KEYRING is not set # end of Certificates for signature checking # CONFIG_CRYPTO_KRB5 is not set CONFIG_BINARY_PRINTF=y # # Library routines # # CONFIG_PACKING is not set CONFIG_BITREVERSE=y CONFIG_GENERIC_STRNCPY_FROM_USER=y CONFIG_GENERIC_STRNLEN_USER=y CONFIG_GENERIC_NET_UTILS=y # CONFIG_CORDIC is not set # CONFIG_PRIME_NUMBERS is not set CONFIG_RATIONAL=y CONFIG_GENERIC_IOMAP=y CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y CONFIG_ARCH_HAS_FAST_MULTIPLIER=y CONFIG_ARCH_USE_SYM_ANNOTATIONS=y # # Crypto library routines # CONFIG_CRYPTO_LIB_UTILS=y CONFIG_CRYPTO_LIB_AES=y CONFIG_CRYPTO_LIB_AESGCM=y CONFIG_CRYPTO_LIB_ARC4=y CONFIG_CRYPTO_LIB_GF128MUL=y CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y CONFIG_CRYPTO_LIB_POLY1305_RSIZE=11 CONFIG_CRYPTO_LIB_SHA1=y CONFIG_CRYPTO_LIB_SHA256=y # end of Crypto library routines CONFIG_CRC_CCITT=y CONFIG_CRC16=y CONFIG_ARCH_HAS_CRC_T10DIF=y CONFIG_CRC32=y CONFIG_ARCH_HAS_CRC32=y CONFIG_CRC32_ARCH=y CONFIG_ARCH_HAS_CRC64=y CONFIG_CRC_OPTIMIZATIONS=y CONFIG_XXHASH=y # CONFIG_RANDOM32_SELFTEST is not set CONFIG_ZLIB_INFLATE=y CONFIG_ZLIB_DEFLATE=y CONFIG_LZO_COMPRESS=y CONFIG_LZO_DECOMPRESS=y CONFIG_LZ4_DECOMPRESS=y CONFIG_ZSTD_COMMON=y CONFIG_ZSTD_DECOMPRESS=y CONFIG_XZ_DEC=y CONFIG_XZ_DEC_X86=y CONFIG_XZ_DEC_POWERPC=y CONFIG_XZ_DEC_ARM=y CONFIG_XZ_DEC_ARMTHUMB=y CONFIG_XZ_DEC_ARM64=y CONFIG_XZ_DEC_SPARC=y CONFIG_XZ_DEC_RISCV=y # CONFIG_XZ_DEC_MICROLZMA is not set CONFIG_XZ_DEC_BCJ=y # CONFIG_XZ_DEC_TEST is not set CONFIG_DECOMPRESS_GZIP=y CONFIG_DECOMPRESS_BZIP2=y CONFIG_DECOMPRESS_LZMA=y CONFIG_DECOMPRESS_XZ=y CONFIG_DECOMPRESS_LZO=y CONFIG_DECOMPRESS_LZ4=y CONFIG_DECOMPRESS_ZSTD=y CONFIG_GENERIC_ALLOCATOR=y CONFIG_TEXTSEARCH=y CONFIG_TEXTSEARCH_KMP=y CONFIG_TEXTSEARCH_BM=y CONFIG_TEXTSEARCH_FSM=y CONFIG_INTERVAL_TREE=y CONFIG_XARRAY_MULTI=y CONFIG_ASSOCIATIVE_ARRAY=y CONFIG_HAS_IOMEM=y CONFIG_HAS_IOPORT=y CONFIG_HAS_IOPORT_MAP=y CONFIG_HAS_DMA=y CONFIG_DMA_OPS_HELPERS=y CONFIG_NEED_SG_DMA_FLAGS=y CONFIG_NEED_SG_DMA_LENGTH=y CONFIG_NEED_DMA_MAP_STATE=y CONFIG_ARCH_DMA_ADDR_T_64BIT=y CONFIG_ARCH_HAS_FORCE_DMA_UNENCRYPTED=y CONFIG_SWIOTLB=y # CONFIG_SWIOTLB_DYNAMIC is not set CONFIG_DMA_NEED_SYNC=y CONFIG_DMA_COHERENT_POOL=y # CONFIG_DMA_API_DEBUG is not set # CONFIG_DMA_MAP_BENCHMARK is not set CONFIG_SGL_ALLOC=y CONFIG_CHECK_SIGNATURE=y CONFIG_CPU_RMAP=y CONFIG_DQL=y CONFIG_GLOB=y # CONFIG_GLOB_SELFTEST is not set CONFIG_NLATTR=y CONFIG_CLZ_TAB=y # CONFIG_IRQ_POLL is not set CONFIG_MPILIB=y CONFIG_SIGNATURE=y CONFIG_DIMLIB=y CONFIG_OID_REGISTRY=y CONFIG_UCS2_STRING=y CONFIG_HAVE_GENERIC_VDSO=y CONFIG_GENERIC_GETTIMEOFDAY=y CONFIG_GENERIC_VDSO_TIME_NS=y CONFIG_GENERIC_VDSO_OVERFLOW_PROTECT=y CONFIG_VDSO_GETRANDOM=y CONFIG_GENERIC_VDSO_DATA_STORE=y CONFIG_FONT_SUPPORT=y CONFIG_FONT_8x16=y CONFIG_FONT_AUTOSELECT=y CONFIG_SG_POOL=y CONFIG_ARCH_HAS_PMEM_API=y CONFIG_ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION=y CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE=y CONFIG_ARCH_HAS_COPY_MC=y CONFIG_ARCH_STACKWALK=y CONFIG_STACKDEPOT=y CONFIG_STACKDEPOT_MAX_FRAMES=64 CONFIG_SBITMAP=y # CONFIG_LWQ_TEST is not set # end of Library routines CONFIG_FIRMWARE_TABLE=y CONFIG_UNION_FIND=y # # Kernel hacking # # # printk and dmesg options # CONFIG_PRINTK_TIME=y # CONFIG_PRINTK_CALLER is not set # CONFIG_STACKTRACE_BUILD_ID is not set CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7 CONFIG_CONSOLE_LOGLEVEL_QUIET=4 CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4 # CONFIG_BOOT_PRINTK_DELAY is not set # CONFIG_DYNAMIC_DEBUG is not set # CONFIG_DYNAMIC_DEBUG_CORE is not set CONFIG_SYMBOLIC_ERRNAME=y CONFIG_DEBUG_BUGVERBOSE=y # end of printk and dmesg options CONFIG_DEBUG_KERNEL=y CONFIG_DEBUG_MISC=y # # Compile-time checks and compiler options # CONFIG_AS_HAS_NON_CONST_ULEB128=y CONFIG_DEBUG_INFO_NONE=y # CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT is not set # CONFIG_DEBUG_INFO_DWARF4 is not set # CONFIG_DEBUG_INFO_DWARF5 is not set CONFIG_FRAME_WARN=2048 # CONFIG_STRIP_ASM_SYMS is not set # CONFIG_READABLE_ASM is not set # CONFIG_HEADERS_INSTALL is not set # CONFIG_DEBUG_SECTION_MISMATCH is not set CONFIG_SECTION_MISMATCH_WARN_ONLY=y # CONFIG_DEBUG_FORCE_FUNCTION_ALIGN_64B is not set CONFIG_OBJTOOL=y # CONFIG_OBJTOOL_WERROR is not set # CONFIG_VMLINUX_MAP is not set # CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set # end of Compile-time checks and compiler options # # Generic Kernel Debugging Instruments # CONFIG_MAGIC_SYSRQ=y CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1 CONFIG_MAGIC_SYSRQ_SERIAL=y CONFIG_MAGIC_SYSRQ_SERIAL_SEQUENCE="" CONFIG_DEBUG_FS=y CONFIG_DEBUG_FS_ALLOW_ALL=y # CONFIG_DEBUG_FS_DISALLOW_MOUNT is not set # CONFIG_DEBUG_FS_ALLOW_NONE is not set CONFIG_HAVE_ARCH_KGDB=y # CONFIG_KGDB is not set CONFIG_ARCH_HAS_UBSAN=y # CONFIG_UBSAN is not set CONFIG_HAVE_ARCH_KCSAN=y CONFIG_HAVE_KCSAN_COMPILER=y # CONFIG_KCSAN is not set # end of Generic Kernel Debugging Instruments # # Networking Debugging # # CONFIG_NET_DEV_REFCNT_TRACKER is not set # CONFIG_NET_NS_REFCNT_TRACKER is not set # CONFIG_DEBUG_NET is not set # CONFIG_DEBUG_NET_SMALL_RTNL is not set # end of Networking Debugging # # Memory Debugging # # CONFIG_PAGE_EXTENSION is not set # CONFIG_DEBUG_PAGEALLOC is not set CONFIG_SLUB_DEBUG=y # CONFIG_SLUB_DEBUG_ON is not set # CONFIG_PAGE_OWNER is not set # CONFIG_PAGE_TABLE_CHECK is not set # CONFIG_PAGE_POISONING is not set # CONFIG_DEBUG_PAGE_REF is not set # CONFIG_DEBUG_RODATA_TEST is not set CONFIG_ARCH_HAS_DEBUG_WX=y # CONFIG_DEBUG_WX is not set CONFIG_ARCH_HAS_PTDUMP=y # CONFIG_PTDUMP_DEBUGFS is not set CONFIG_HAVE_DEBUG_KMEMLEAK=y # CONFIG_DEBUG_KMEMLEAK is not set # CONFIG_PER_VMA_LOCK_STATS is not set # CONFIG_DEBUG_OBJECTS is not set # CONFIG_SHRINKER_DEBUG is not set CONFIG_DEBUG_STACK_USAGE=y # CONFIG_SCHED_STACK_END_CHECK is not set CONFIG_ARCH_HAS_DEBUG_VM_PGTABLE=y # CONFIG_DEBUG_VFS is not set # CONFIG_DEBUG_VM is not set # CONFIG_DEBUG_VM_PGTABLE is not set CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y # CONFIG_DEBUG_VIRTUAL is not set CONFIG_DEBUG_MEMORY_INIT=y # CONFIG_DEBUG_PER_CPU_MAPS is not set CONFIG_ARCH_SUPPORTS_KMAP_LOCAL_FORCE_MAP=y # CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP is not set # CONFIG_MEM_ALLOC_PROFILING is not set CONFIG_HAVE_ARCH_KASAN=y CONFIG_HAVE_ARCH_KASAN_VMALLOC=y CONFIG_CC_HAS_KASAN_GENERIC=y CONFIG_CC_HAS_WORKING_NOSANITIZE_ADDRESS=y # CONFIG_KASAN is not set CONFIG_HAVE_ARCH_KFENCE=y # CONFIG_KFENCE is not set CONFIG_HAVE_ARCH_KMSAN=y # end of Memory Debugging # CONFIG_DEBUG_SHIRQ is not set # # Debug Oops, Lockups and Hangs # # CONFIG_PANIC_ON_OOPS is not set CONFIG_PANIC_ON_OOPS_VALUE=0 CONFIG_PANIC_TIMEOUT=0 # CONFIG_SOFTLOCKUP_DETECTOR is not set CONFIG_HAVE_HARDLOCKUP_DETECTOR_BUDDY=y # CONFIG_HARDLOCKUP_DETECTOR is not set CONFIG_HARDLOCKUP_CHECK_TIMESTAMP=y # CONFIG_DETECT_HUNG_TASK is not set # CONFIG_WQ_WATCHDOG is not set # CONFIG_WQ_CPU_INTENSIVE_REPORT is not set # CONFIG_TEST_LOCKUP is not set # end of Debug Oops, Lockups and Hangs # # Scheduler Debugging # CONFIG_SCHED_INFO=y CONFIG_SCHEDSTATS=y # end of Scheduler Debugging CONFIG_DEBUG_PREEMPT=y # # Lock Debugging (spinlocks, mutexes, etc...) # CONFIG_LOCK_DEBUGGING_SUPPORT=y # CONFIG_PROVE_LOCKING is not set # CONFIG_LOCK_STAT is not set # CONFIG_DEBUG_RT_MUTEXES is not set # CONFIG_DEBUG_SPINLOCK is not set # CONFIG_DEBUG_MUTEXES is not set # CONFIG_DEBUG_WW_MUTEX_SLOWPATH is not set # CONFIG_DEBUG_RWSEMS is not set # CONFIG_DEBUG_LOCK_ALLOC is not set # CONFIG_DEBUG_ATOMIC_SLEEP is not set # CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set # CONFIG_LOCK_TORTURE_TEST is not set # CONFIG_WW_MUTEX_SELFTEST is not set # CONFIG_SCF_TORTURE_TEST is not set # CONFIG_CSD_LOCK_WAIT_DEBUG is not set # end of Lock Debugging (spinlocks, mutexes, etc...) # CONFIG_NMI_CHECK_CPU is not set # CONFIG_DEBUG_IRQFLAGS is not set CONFIG_STACKTRACE=y # CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set # CONFIG_DEBUG_KOBJECT is not set # # Debug kernel data structures # # CONFIG_DEBUG_LIST is not set # CONFIG_DEBUG_PLIST is not set # CONFIG_DEBUG_SG is not set # CONFIG_DEBUG_NOTIFIERS is not set # CONFIG_DEBUG_MAPLE_TREE is not set # end of Debug kernel data structures # # RCU Debugging # # CONFIG_RCU_SCALE_TEST is not set # CONFIG_RCU_TORTURE_TEST is not set # CONFIG_RCU_REF_SCALE_TEST is not set CONFIG_RCU_CPU_STALL_TIMEOUT=21 CONFIG_RCU_EXP_CPU_STALL_TIMEOUT=0 # CONFIG_RCU_CPU_STALL_CPUTIME is not set CONFIG_RCU_TRACE=y # CONFIG_RCU_EQS_DEBUG is not set # end of RCU Debugging # CONFIG_DEBUG_WQ_FORCE_RR_CPU is not set # CONFIG_CPU_HOTPLUG_STATE_CONTROL is not set # CONFIG_LATENCYTOP is not set # CONFIG_DEBUG_CGROUP_REF is not set CONFIG_USER_STACKTRACE_SUPPORT=y CONFIG_NOP_TRACER=y CONFIG_HAVE_RETHOOK=y CONFIG_RETHOOK=y CONFIG_HAVE_FUNCTION_TRACER=y CONFIG_HAVE_DYNAMIC_FTRACE=y CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS=y CONFIG_HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS=y CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS=y CONFIG_HAVE_FTRACE_REGS_HAVING_PT_REGS=y CONFIG_HAVE_DYNAMIC_FTRACE_NO_PATCHABLE=y CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y CONFIG_HAVE_SYSCALL_TRACEPOINTS=y CONFIG_HAVE_FENTRY=y CONFIG_HAVE_OBJTOOL_MCOUNT=y CONFIG_HAVE_OBJTOOL_NOP_MCOUNT=y CONFIG_HAVE_C_RECORDMCOUNT=y CONFIG_HAVE_BUILDTIME_MCOUNT_SORT=y CONFIG_TRACE_CLOCK=y CONFIG_RING_BUFFER=y CONFIG_EVENT_TRACING=y CONFIG_CONTEXT_SWITCH_TRACER=y CONFIG_TRACING=y CONFIG_GENERIC_TRACER=y CONFIG_TRACING_SUPPORT=y CONFIG_FTRACE=y # CONFIG_BOOTTIME_TRACING is not set # CONFIG_FUNCTION_TRACER is not set # CONFIG_STACK_TRACER is not set # CONFIG_IRQSOFF_TRACER is not set # CONFIG_PREEMPT_TRACER is not set # CONFIG_SCHED_TRACER is not set # CONFIG_HWLAT_TRACER is not set # CONFIG_OSNOISE_TRACER is not set # CONFIG_TIMERLAT_TRACER is not set # CONFIG_MMIOTRACE is not set # CONFIG_FTRACE_SYSCALLS is not set # CONFIG_TRACER_SNAPSHOT is not set CONFIG_BRANCH_PROFILE_NONE=y # CONFIG_PROFILE_ANNOTATED_BRANCHES is not set # CONFIG_PROFILE_ALL_BRANCHES is not set CONFIG_BLK_DEV_IO_TRACE=y CONFIG_KPROBE_EVENTS=y CONFIG_UPROBE_EVENTS=y CONFIG_DYNAMIC_EVENTS=y CONFIG_PROBE_EVENTS=y # CONFIG_SYNTH_EVENTS is not set # CONFIG_USER_EVENTS is not set # CONFIG_HIST_TRIGGERS is not set # CONFIG_TRACE_EVENT_INJECT is not set # CONFIG_TRACEPOINT_BENCHMARK is not set # CONFIG_RING_BUFFER_BENCHMARK is not set # CONFIG_TRACE_EVAL_MAP_FILE is not set # CONFIG_FTRACE_STARTUP_TEST is not set # CONFIG_RING_BUFFER_STARTUP_TEST is not set # CONFIG_RING_BUFFER_VALIDATE_TIME_DELTAS is not set # CONFIG_PREEMPTIRQ_DELAY_TEST is not set # CONFIG_KPROBE_EVENT_GEN_TEST is not set # CONFIG_RV is not set CONFIG_PROVIDE_OHCI1394_DMA_INIT=y # CONFIG_SAMPLES is not set CONFIG_HAVE_SAMPLE_FTRACE_DIRECT=y CONFIG_HAVE_SAMPLE_FTRACE_DIRECT_MULTI=y CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED=y CONFIG_STRICT_DEVMEM=y # CONFIG_IO_STRICT_DEVMEM is not set # # x86 Debugging # CONFIG_EARLY_PRINTK_USB=y CONFIG_X86_VERBOSE_BOOTUP=y CONFIG_EARLY_PRINTK=y CONFIG_EARLY_PRINTK_DBGP=y # CONFIG_EARLY_PRINTK_USB_XDBC is not set # CONFIG_EFI_PGT_DUMP is not set # CONFIG_DEBUG_TLBFLUSH is not set CONFIG_HAVE_MMIOTRACE_SUPPORT=y # CONFIG_X86_DECODER_SELFTEST is not set CONFIG_IO_DELAY_0X80=y # CONFIG_IO_DELAY_0XED is not set # CONFIG_IO_DELAY_UDELAY is not set # CONFIG_IO_DELAY_NONE is not set CONFIG_DEBUG_BOOT_PARAMS=y # CONFIG_CPA_DEBUG is not set # CONFIG_DEBUG_ENTRY is not set # CONFIG_DEBUG_NMI_SELFTEST is not set CONFIG_X86_DEBUG_FPU=y # CONFIG_PUNIT_ATOM_DEBUG is not set CONFIG_UNWINDER_ORC=y # CONFIG_UNWINDER_FRAME_POINTER is not set # end of x86 Debugging # # Kernel Testing and Coverage # # CONFIG_KUNIT is not set # CONFIG_NOTIFIER_ERROR_INJECTION is not set CONFIG_FUNCTION_ERROR_INJECTION=y # CONFIG_FAULT_INJECTION is not set CONFIG_ARCH_HAS_KCOV=y CONFIG_CC_HAS_SANCOV_TRACE_PC=y # CONFIG_KCOV is not set CONFIG_RUNTIME_TESTING_MENU=y # CONFIG_TEST_DHRY is not set # CONFIG_LKDTM is not set # CONFIG_TEST_MIN_HEAP is not set # CONFIG_TEST_DIV64 is not set # CONFIG_TEST_MULDIV64 is not set # CONFIG_BACKTRACE_SELF_TEST is not set # CONFIG_TEST_REF_TRACKER is not set # CONFIG_RBTREE_TEST is not set # CONFIG_REED_SOLOMON_TEST is not set # CONFIG_INTERVAL_TREE_TEST is not set # CONFIG_PERCPU_TEST is not set # CONFIG_ATOMIC64_SELFTEST is not set # CONFIG_TEST_HEXDUMP is not set # CONFIG_TEST_KSTRTOX is not set # CONFIG_TEST_BITMAP is not set # CONFIG_TEST_UUID is not set # CONFIG_TEST_XARRAY is not set # CONFIG_TEST_MAPLE_TREE is not set # CONFIG_TEST_RHASHTABLE is not set # CONFIG_TEST_IDA is not set # CONFIG_TEST_LKM is not set # CONFIG_TEST_BITOPS is not set # CONFIG_TEST_VMALLOC is not set # CONFIG_TEST_BPF is not set # CONFIG_FIND_BIT_BENCHMARK is not set # CONFIG_TEST_FIRMWARE is not set # CONFIG_TEST_SYSCTL is not set # CONFIG_TEST_UDELAY is not set # CONFIG_TEST_STATIC_KEYS is not set # CONFIG_TEST_KMOD is not set # CONFIG_TEST_KALLSYMS is not set # CONFIG_TEST_MEMCAT_P is not set # CONFIG_TEST_MEMINIT is not set # CONFIG_TEST_FREE_PAGES is not set # CONFIG_TEST_FPU is not set # CONFIG_TEST_CLOCKSOURCE_WATCHDOG is not set # CONFIG_TEST_OBJPOOL is not set CONFIG_ARCH_USE_MEMTEST=y # CONFIG_MEMTEST is not set # end of Kernel Testing and Coverage # # Rust hacking # # end of Rust hacking # end of Kernel hacking ^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [tip: x86/boot] x86/boot: Move the EFI mixed mode startup code back under arch/x86, into startup/ 2025-04-07 7:38 ` Aithal, Srikanth @ 2025-04-07 8:30 ` Ard Biesheuvel 2025-04-07 9:41 ` Aithal, Srikanth 0 siblings, 1 reply; 20+ messages in thread From: Ard Biesheuvel @ 2025-04-07 8:30 UTC (permalink / raw) To: Aithal, Srikanth Cc: linux-kernel, Ingo Molnar, David Woodhouse, H. Peter Anvin, Kees Cook, x86 On Mon, 7 Apr 2025 at 10:38, Aithal, Srikanth <sraithal@amd.com> wrote: > > Hello, > > This commit breaks the build of next-20250407. The kernel config is > attached here. > > Build error: > > arch/x86/boot/startup/efi-mixed.o: warning: objtool: > efi32_stub_entry+0x0: unannotated intra-function call > make[3]: *** [scripts/Makefile.build:335: > arch/x86/boot/startup/efi-mixed.o] Error 255 > make[3]: *** Deleting file 'arch/x86/boot/startup/efi-mixed.o' > make[3]: *** Waiting for unfinished jobs.... > make[2]: *** [scripts/Makefile.build:461: arch/x86/boot/startup] Error 2 > make[2]: *** Waiting for unfinished jobs.... > make[1]: *** [/home/VT_BUILD/linux/Makefile:2006: .] Error 2 > make: *** [Makefile:248: __sub-make] Error 2 > > Apologies for the breakage. Does it help to add the following to arch/x86/boot/startup/Makefile: OBJECT_FILES_NON_STANDARD := y ? > > Thanks, > Srikanth Aithal <sraithal@amd.com> > > > On 4/7/2025 12:03 AM, tip-bot2 for Ard Biesheuvel wrote: > > The following commit has been merged into the x86/boot branch of tip: > > > > Commit-ID: 4f2d1bbc2c92a32fd612e6c3b51832d5c1c3678e > > Gitweb: https://git.kernel.org/tip/4f2d1bbc2c92a32fd612e6c3b51832d5c1c3678e > > Author: Ard Biesheuvel <ardb@kernel.org> > > AuthorDate: Tue, 01 Apr 2025 15:34:20 +02:00 > > Committer: Ingo Molnar <mingo@kernel.org> > > CommitterDate: Sun, 06 Apr 2025 20:15:14 +02:00 > > > > x86/boot: Move the EFI mixed mode startup code back under arch/x86, into startup/ > > > > Linus expressed a strong preference for arch-specific asm code (i.e., > > virtually all of it) to reside under arch/ rather than anywhere else. > > > > So move the EFI mixed mode startup code back, and put it under > > arch/x86/boot/startup/ where all shared x86 startup code is going to > > live. > > > > Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> > > Signed-off-by: Ard Biesheuvel <ardb@kernel.org> > > Signed-off-by: Ingo Molnar <mingo@kernel.org> > > Cc: David Woodhouse <dwmw@amazon.co.uk> > > Cc: H. Peter Anvin <hpa@zytor.com> > > Cc: Kees Cook <keescook@chromium.org> > > Link: https://lore.kernel.org/r/20250401133416.1436741-11-ardb+git@google.com > > --- > > arch/x86/boot/startup/Makefile | 3 +- > > arch/x86/boot/startup/efi-mixed.S | 253 ++++++++++++++++++++++- > > drivers/firmware/efi/libstub/Makefile | 1 +- > > drivers/firmware/efi/libstub/x86-mixed.S | 253 +---------------------- > > 4 files changed, 256 insertions(+), 254 deletions(-) > > create mode 100644 arch/x86/boot/startup/efi-mixed.S > > delete mode 100644 drivers/firmware/efi/libstub/x86-mixed.S > > > > diff --git a/arch/x86/boot/startup/Makefile b/arch/x86/boot/startup/Makefile > > index 03519ef..73946a3 100644 > > --- a/arch/x86/boot/startup/Makefile > > +++ b/arch/x86/boot/startup/Makefile > > @@ -1,3 +1,6 @@ > > # SPDX-License-Identifier: GPL-2.0 > > > > +KBUILD_AFLAGS += -D__DISABLE_EXPORTS > > + > > lib-$(CONFIG_X86_64) += la57toggle.o > > +lib-$(CONFIG_EFI_MIXED) += efi-mixed.o > > diff --git a/arch/x86/boot/startup/efi-mixed.S b/arch/x86/boot/startup/efi-mixed.S > > new file mode 100644 > > index 0000000..e04ed99 > > --- /dev/null > > +++ b/arch/x86/boot/startup/efi-mixed.S > > @@ -0,0 +1,253 @@ > > +/* SPDX-License-Identifier: GPL-2.0 */ > > +/* > > + * Copyright (C) 2014, 2015 Intel Corporation; author Matt Fleming > > + * > > + * Early support for invoking 32-bit EFI services from a 64-bit kernel. > > + * > > + * Because this thunking occurs before ExitBootServices() we have to > > + * restore the firmware's 32-bit GDT and IDT before we make EFI service > > + * calls. > > + * > > + * On the plus side, we don't have to worry about mangling 64-bit > > + * addresses into 32-bits because we're executing with an identity > > + * mapped pagetable and haven't transitioned to 64-bit virtual addresses > > + * yet. > > + */ > > + > > +#include <linux/linkage.h> > > +#include <asm/desc_defs.h> > > +#include <asm/msr.h> > > +#include <asm/page_types.h> > > +#include <asm/pgtable_types.h> > > +#include <asm/processor-flags.h> > > +#include <asm/segment.h> > > + > > + .text > > + .code32 > > +#ifdef CONFIG_EFI_HANDOVER_PROTOCOL > > +SYM_FUNC_START(efi32_stub_entry) > > + call 1f > > +1: popl %ecx > > + > > + /* Clear BSS */ > > + xorl %eax, %eax > > + leal (_bss - 1b)(%ecx), %edi > > + leal (_ebss - 1b)(%ecx), %ecx > > + subl %edi, %ecx > > + shrl $2, %ecx > > + cld > > + rep stosl > > + > > + add $0x4, %esp /* Discard return address */ > > + movl 8(%esp), %ebx /* struct boot_params pointer */ > > + jmp efi32_startup > > +SYM_FUNC_END(efi32_stub_entry) > > +#endif > > + > > +/* > > + * Called using a far call from __efi64_thunk() below, using the x86_64 SysV > > + * ABI (except for R8/R9 which are inaccessible to 32-bit code - EAX/EBX are > > + * used instead). EBP+16 points to the arguments passed via the stack. > > + * > > + * The first argument (EDI) is a pointer to the boot service or protocol, to > > + * which the remaining arguments are passed, each truncated to 32 bits. > > + */ > > +SYM_FUNC_START_LOCAL(efi_enter32) > > + /* > > + * Convert x86-64 SysV ABI params to i386 ABI > > + */ > > + pushl 32(%ebp) /* Up to 3 args passed via the stack */ > > + pushl 24(%ebp) > > + pushl 16(%ebp) > > + pushl %ebx /* R9 */ > > + pushl %eax /* R8 */ > > + pushl %ecx > > + pushl %edx > > + pushl %esi > > + > > + /* Disable paging */ > > + movl %cr0, %eax > > + btrl $X86_CR0_PG_BIT, %eax > > + movl %eax, %cr0 > > + > > + /* Disable long mode via EFER */ > > + movl $MSR_EFER, %ecx > > + rdmsr > > + btrl $_EFER_LME, %eax > > + wrmsr > > + > > + call *%edi > > + > > + /* We must preserve return value */ > > + movl %eax, %edi > > + > > + call efi32_enable_long_mode > > + > > + addl $32, %esp > > + movl %edi, %eax > > + lret > > +SYM_FUNC_END(efi_enter32) > > + > > + .code64 > > +SYM_FUNC_START(__efi64_thunk) > > + push %rbp > > + movl %esp, %ebp > > + push %rbx > > + > > + /* Move args #5 and #6 into 32-bit accessible registers */ > > + movl %r8d, %eax > > + movl %r9d, %ebx > > + > > + lcalll *efi32_call(%rip) > > + > > + pop %rbx > > + pop %rbp > > + RET > > +SYM_FUNC_END(__efi64_thunk) > > + > > + .code32 > > +SYM_FUNC_START_LOCAL(efi32_enable_long_mode) > > + movl %cr4, %eax > > + btsl $(X86_CR4_PAE_BIT), %eax > > + movl %eax, %cr4 > > + > > + movl $MSR_EFER, %ecx > > + rdmsr > > + btsl $_EFER_LME, %eax > > + wrmsr > > + > > + /* Disable interrupts - the firmware's IDT does not work in long mode */ > > + cli > > + > > + /* Enable paging */ > > + movl %cr0, %eax > > + btsl $X86_CR0_PG_BIT, %eax > > + movl %eax, %cr0 > > + ret > > +SYM_FUNC_END(efi32_enable_long_mode) > > + > > +/* > > + * This is the common EFI stub entry point for mixed mode. It sets up the GDT > > + * and page tables needed for 64-bit execution, after which it calls the > > + * common 64-bit EFI entrypoint efi_stub_entry(). > > + * > > + * Arguments: 0(%esp) image handle > > + * 4(%esp) EFI system table pointer > > + * %ebx struct boot_params pointer (or NULL) > > + * > > + * Since this is the point of no return for ordinary execution, no registers > > + * are considered live except for the function parameters. [Note that the EFI > > + * stub may still exit and return to the firmware using the Exit() EFI boot > > + * service.] > > + */ > > +SYM_FUNC_START_LOCAL(efi32_startup) > > + movl %esp, %ebp > > + > > + subl $8, %esp > > + sgdtl (%esp) /* Save GDT descriptor to the stack */ > > + movl 2(%esp), %esi /* Existing GDT pointer */ > > + movzwl (%esp), %ecx /* Existing GDT limit */ > > + inc %ecx /* Existing GDT size */ > > + andl $~7, %ecx /* Ensure size is multiple of 8 */ > > + > > + subl %ecx, %esp /* Allocate new GDT */ > > + andl $~15, %esp /* Realign the stack */ > > + movl %esp, %edi /* New GDT address */ > > + leal 7(%ecx), %eax /* New GDT limit */ > > + pushw %cx /* Push 64-bit CS (for LJMP below) */ > > + pushl %edi /* Push new GDT address */ > > + pushw %ax /* Push new GDT limit */ > > + > > + /* Copy GDT to the stack and add a 64-bit code segment at the end */ > > + movl $GDT_ENTRY(DESC_CODE64, 0, 0xfffff) & 0xffffffff, (%edi,%ecx) > > + movl $GDT_ENTRY(DESC_CODE64, 0, 0xfffff) >> 32, 4(%edi,%ecx) > > + shrl $2, %ecx > > + cld > > + rep movsl /* Copy the firmware GDT */ > > + lgdtl (%esp) /* Switch to the new GDT */ > > + > > + call 1f > > +1: pop %edi > > + > > + /* Record mixed mode entry */ > > + movb $0x0, (efi_is64 - 1b)(%edi) > > + > > + /* Set up indirect far call to re-enter 32-bit mode */ > > + leal (efi32_call - 1b)(%edi), %eax > > + addl %eax, (%eax) > > + movw %cs, 4(%eax) > > + > > + /* Disable paging */ > > + movl %cr0, %eax > > + btrl $X86_CR0_PG_BIT, %eax > > + movl %eax, %cr0 > > + > > + /* Set up 1:1 mapping */ > > + leal (pte - 1b)(%edi), %eax > > + movl $_PAGE_PRESENT | _PAGE_RW | _PAGE_PSE, %ecx > > + leal (_PAGE_PRESENT | _PAGE_RW)(%eax), %edx > > +2: movl %ecx, (%eax) > > + addl $8, %eax > > + addl $PMD_SIZE, %ecx > > + jnc 2b > > + > > + movl $PAGE_SIZE, %ecx > > + .irpc l, 0123 > > + movl %edx, \l * 8(%eax) > > + addl %ecx, %edx > > + .endr > > + addl %ecx, %eax > > + movl %edx, (%eax) > > + movl %eax, %cr3 > > + > > + call efi32_enable_long_mode > > + > > + /* Set up far jump to 64-bit mode (CS is already on the stack) */ > > + leal (efi_stub_entry - 1b)(%edi), %eax > > + movl %eax, 2(%esp) > > + > > + movl 0(%ebp), %edi > > + movl 4(%ebp), %esi > > + movl %ebx, %edx > > + ljmpl *2(%esp) > > +SYM_FUNC_END(efi32_startup) > > + > > +/* > > + * efi_status_t efi32_pe_entry(efi_handle_t image_handle, > > + * efi_system_table_32_t *sys_table) > > + */ > > +SYM_FUNC_START(efi32_pe_entry) > > + pushl %ebx // save callee-save registers > > + > > + /* Check whether the CPU supports long mode */ > > + movl $0x80000001, %eax // assume extended info support > > + cpuid > > + btl $29, %edx // check long mode bit > > + jnc 1f > > + leal 8(%esp), %esp // preserve stack alignment > > + xor %ebx, %ebx // no struct boot_params pointer > > + jmp efi32_startup // only ESP and EBX remain live > > +1: movl $0x80000003, %eax // EFI_UNSUPPORTED > > + popl %ebx > > + RET > > +SYM_FUNC_END(efi32_pe_entry) > > + > > +#ifdef CONFIG_EFI_HANDOVER_PROTOCOL > > + .org efi32_stub_entry + 0x200 > > + .code64 > > +SYM_FUNC_START_NOALIGN(efi64_stub_entry) > > + jmp efi_handover_entry > > +SYM_FUNC_END(efi64_stub_entry) > > +#endif > > + > > + .data > > + .balign 8 > > +SYM_DATA_START_LOCAL(efi32_call) > > + .long efi_enter32 - . > > + .word 0x0 > > +SYM_DATA_END(efi32_call) > > +SYM_DATA(efi_is64, .byte 1) > > + > > + .bss > > + .balign PAGE_SIZE > > +SYM_DATA_LOCAL(pte, .fill 6 * PAGE_SIZE, 1, 0) > > diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile > > index d23a1b9..2f17339 100644 > > --- a/drivers/firmware/efi/libstub/Makefile > > +++ b/drivers/firmware/efi/libstub/Makefile > > @@ -85,7 +85,6 @@ lib-$(CONFIG_EFI_GENERIC_STUB) += efi-stub.o string.o intrinsics.o systable.o \ > > lib-$(CONFIG_ARM) += arm32-stub.o > > lib-$(CONFIG_ARM64) += kaslr.o arm64.o arm64-stub.o smbios.o > > lib-$(CONFIG_X86) += x86-stub.o smbios.o > > -lib-$(CONFIG_EFI_MIXED) += x86-mixed.o > > lib-$(CONFIG_X86_64) += x86-5lvl.o > > lib-$(CONFIG_RISCV) += kaslr.o riscv.o riscv-stub.o > > lib-$(CONFIG_LOONGARCH) += loongarch.o loongarch-stub.o > > diff --git a/drivers/firmware/efi/libstub/x86-mixed.S b/drivers/firmware/efi/libstub/x86-mixed.S > > deleted file mode 100644 > > index e04ed99..0000000 > > --- a/drivers/firmware/efi/libstub/x86-mixed.S > > +++ /dev/null > > @@ -1,253 +0,0 @@ > > -/* SPDX-License-Identifier: GPL-2.0 */ > > -/* > > - * Copyright (C) 2014, 2015 Intel Corporation; author Matt Fleming > > - * > > - * Early support for invoking 32-bit EFI services from a 64-bit kernel. > > - * > > - * Because this thunking occurs before ExitBootServices() we have to > > - * restore the firmware's 32-bit GDT and IDT before we make EFI service > > - * calls. > > - * > > - * On the plus side, we don't have to worry about mangling 64-bit > > - * addresses into 32-bits because we're executing with an identity > > - * mapped pagetable and haven't transitioned to 64-bit virtual addresses > > - * yet. > > - */ > > - > > -#include <linux/linkage.h> > > -#include <asm/desc_defs.h> > > -#include <asm/msr.h> > > -#include <asm/page_types.h> > > -#include <asm/pgtable_types.h> > > -#include <asm/processor-flags.h> > > -#include <asm/segment.h> > > - > > - .text > > - .code32 > > -#ifdef CONFIG_EFI_HANDOVER_PROTOCOL > > -SYM_FUNC_START(efi32_stub_entry) > > - call 1f > > -1: popl %ecx > > - > > - /* Clear BSS */ > > - xorl %eax, %eax > > - leal (_bss - 1b)(%ecx), %edi > > - leal (_ebss - 1b)(%ecx), %ecx > > - subl %edi, %ecx > > - shrl $2, %ecx > > - cld > > - rep stosl > > - > > - add $0x4, %esp /* Discard return address */ > > - movl 8(%esp), %ebx /* struct boot_params pointer */ > > - jmp efi32_startup > > -SYM_FUNC_END(efi32_stub_entry) > > -#endif > > - > > -/* > > - * Called using a far call from __efi64_thunk() below, using the x86_64 SysV > > - * ABI (except for R8/R9 which are inaccessible to 32-bit code - EAX/EBX are > > - * used instead). EBP+16 points to the arguments passed via the stack. > > - * > > - * The first argument (EDI) is a pointer to the boot service or protocol, to > > - * which the remaining arguments are passed, each truncated to 32 bits. > > - */ > > -SYM_FUNC_START_LOCAL(efi_enter32) > > - /* > > - * Convert x86-64 SysV ABI params to i386 ABI > > - */ > > - pushl 32(%ebp) /* Up to 3 args passed via the stack */ > > - pushl 24(%ebp) > > - pushl 16(%ebp) > > - pushl %ebx /* R9 */ > > - pushl %eax /* R8 */ > > - pushl %ecx > > - pushl %edx > > - pushl %esi > > - > > - /* Disable paging */ > > - movl %cr0, %eax > > - btrl $X86_CR0_PG_BIT, %eax > > - movl %eax, %cr0 > > - > > - /* Disable long mode via EFER */ > > - movl $MSR_EFER, %ecx > > - rdmsr > > - btrl $_EFER_LME, %eax > > - wrmsr > > - > > - call *%edi > > - > > - /* We must preserve return value */ > > - movl %eax, %edi > > - > > - call efi32_enable_long_mode > > - > > - addl $32, %esp > > - movl %edi, %eax > > - lret > > -SYM_FUNC_END(efi_enter32) > > - > > - .code64 > > -SYM_FUNC_START(__efi64_thunk) > > - push %rbp > > - movl %esp, %ebp > > - push %rbx > > - > > - /* Move args #5 and #6 into 32-bit accessible registers */ > > - movl %r8d, %eax > > - movl %r9d, %ebx > > - > > - lcalll *efi32_call(%rip) > > - > > - pop %rbx > > - pop %rbp > > - RET > > -SYM_FUNC_END(__efi64_thunk) > > - > > - .code32 > > -SYM_FUNC_START_LOCAL(efi32_enable_long_mode) > > - movl %cr4, %eax > > - btsl $(X86_CR4_PAE_BIT), %eax > > - movl %eax, %cr4 > > - > > - movl $MSR_EFER, %ecx > > - rdmsr > > - btsl $_EFER_LME, %eax > > - wrmsr > > - > > - /* Disable interrupts - the firmware's IDT does not work in long mode */ > > - cli > > - > > - /* Enable paging */ > > - movl %cr0, %eax > > - btsl $X86_CR0_PG_BIT, %eax > > - movl %eax, %cr0 > > - ret > > -SYM_FUNC_END(efi32_enable_long_mode) > > - > > -/* > > - * This is the common EFI stub entry point for mixed mode. It sets up the GDT > > - * and page tables needed for 64-bit execution, after which it calls the > > - * common 64-bit EFI entrypoint efi_stub_entry(). > > - * > > - * Arguments: 0(%esp) image handle > > - * 4(%esp) EFI system table pointer > > - * %ebx struct boot_params pointer (or NULL) > > - * > > - * Since this is the point of no return for ordinary execution, no registers > > - * are considered live except for the function parameters. [Note that the EFI > > - * stub may still exit and return to the firmware using the Exit() EFI boot > > - * service.] > > - */ > > -SYM_FUNC_START_LOCAL(efi32_startup) > > - movl %esp, %ebp > > - > > - subl $8, %esp > > - sgdtl (%esp) /* Save GDT descriptor to the stack */ > > - movl 2(%esp), %esi /* Existing GDT pointer */ > > - movzwl (%esp), %ecx /* Existing GDT limit */ > > - inc %ecx /* Existing GDT size */ > > - andl $~7, %ecx /* Ensure size is multiple of 8 */ > > - > > - subl %ecx, %esp /* Allocate new GDT */ > > - andl $~15, %esp /* Realign the stack */ > > - movl %esp, %edi /* New GDT address */ > > - leal 7(%ecx), %eax /* New GDT limit */ > > - pushw %cx /* Push 64-bit CS (for LJMP below) */ > > - pushl %edi /* Push new GDT address */ > > - pushw %ax /* Push new GDT limit */ > > - > > - /* Copy GDT to the stack and add a 64-bit code segment at the end */ > > - movl $GDT_ENTRY(DESC_CODE64, 0, 0xfffff) & 0xffffffff, (%edi,%ecx) > > - movl $GDT_ENTRY(DESC_CODE64, 0, 0xfffff) >> 32, 4(%edi,%ecx) > > - shrl $2, %ecx > > - cld > > - rep movsl /* Copy the firmware GDT */ > > - lgdtl (%esp) /* Switch to the new GDT */ > > - > > - call 1f > > -1: pop %edi > > - > > - /* Record mixed mode entry */ > > - movb $0x0, (efi_is64 - 1b)(%edi) > > - > > - /* Set up indirect far call to re-enter 32-bit mode */ > > - leal (efi32_call - 1b)(%edi), %eax > > - addl %eax, (%eax) > > - movw %cs, 4(%eax) > > - > > - /* Disable paging */ > > - movl %cr0, %eax > > - btrl $X86_CR0_PG_BIT, %eax > > - movl %eax, %cr0 > > - > > - /* Set up 1:1 mapping */ > > - leal (pte - 1b)(%edi), %eax > > - movl $_PAGE_PRESENT | _PAGE_RW | _PAGE_PSE, %ecx > > - leal (_PAGE_PRESENT | _PAGE_RW)(%eax), %edx > > -2: movl %ecx, (%eax) > > - addl $8, %eax > > - addl $PMD_SIZE, %ecx > > - jnc 2b > > - > > - movl $PAGE_SIZE, %ecx > > - .irpc l, 0123 > > - movl %edx, \l * 8(%eax) > > - addl %ecx, %edx > > - .endr > > - addl %ecx, %eax > > - movl %edx, (%eax) > > - movl %eax, %cr3 > > - > > - call efi32_enable_long_mode > > - > > - /* Set up far jump to 64-bit mode (CS is already on the stack) */ > > - leal (efi_stub_entry - 1b)(%edi), %eax > > - movl %eax, 2(%esp) > > - > > - movl 0(%ebp), %edi > > - movl 4(%ebp), %esi > > - movl %ebx, %edx > > - ljmpl *2(%esp) > > -SYM_FUNC_END(efi32_startup) > > - > > -/* > > - * efi_status_t efi32_pe_entry(efi_handle_t image_handle, > > - * efi_system_table_32_t *sys_table) > > - */ > > -SYM_FUNC_START(efi32_pe_entry) > > - pushl %ebx // save callee-save registers > > - > > - /* Check whether the CPU supports long mode */ > > - movl $0x80000001, %eax // assume extended info support > > - cpuid > > - btl $29, %edx // check long mode bit > > - jnc 1f > > - leal 8(%esp), %esp // preserve stack alignment > > - xor %ebx, %ebx // no struct boot_params pointer > > - jmp efi32_startup // only ESP and EBX remain live > > -1: movl $0x80000003, %eax // EFI_UNSUPPORTED > > - popl %ebx > > - RET > > -SYM_FUNC_END(efi32_pe_entry) > > - > > -#ifdef CONFIG_EFI_HANDOVER_PROTOCOL > > - .org efi32_stub_entry + 0x200 > > - .code64 > > -SYM_FUNC_START_NOALIGN(efi64_stub_entry) > > - jmp efi_handover_entry > > -SYM_FUNC_END(efi64_stub_entry) > > -#endif > > - > > - .data > > - .balign 8 > > -SYM_DATA_START_LOCAL(efi32_call) > > - .long efi_enter32 - . > > - .word 0x0 > > -SYM_DATA_END(efi32_call) > > -SYM_DATA(efi_is64, .byte 1) > > - > > - .bss > > - .balign PAGE_SIZE > > -SYM_DATA_LOCAL(pte, .fill 6 * PAGE_SIZE, 1, 0) ^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [tip: x86/boot] x86/boot: Move the EFI mixed mode startup code back under arch/x86, into startup/ 2025-04-07 8:30 ` Ard Biesheuvel @ 2025-04-07 9:41 ` Aithal, Srikanth 2025-04-09 11:54 ` Aithal, Srikanth 0 siblings, 1 reply; 20+ messages in thread From: Aithal, Srikanth @ 2025-04-07 9:41 UTC (permalink / raw) To: Ard Biesheuvel Cc: linux-kernel, Ingo Molnar, David Woodhouse, H. Peter Anvin, Kees Cook, x86 On 4/7/2025 2:00 PM, Ard Biesheuvel wrote: > On Mon, 7 Apr 2025 at 10:38, Aithal, Srikanth <sraithal@amd.com> wrote: >> >> Hello, >> >> This commit breaks the build of next-20250407. The kernel config is >> attached here. >> >> Build error: >> >> arch/x86/boot/startup/efi-mixed.o: warning: objtool: >> efi32_stub_entry+0x0: unannotated intra-function call >> make[3]: *** [scripts/Makefile.build:335: >> arch/x86/boot/startup/efi-mixed.o] Error 255 >> make[3]: *** Deleting file 'arch/x86/boot/startup/efi-mixed.o' >> make[3]: *** Waiting for unfinished jobs.... >> make[2]: *** [scripts/Makefile.build:461: arch/x86/boot/startup] Error 2 >> make[2]: *** Waiting for unfinished jobs.... >> make[1]: *** [/home/VT_BUILD/linux/Makefile:2006: .] Error 2 >> make: *** [Makefile:248: __sub-make] Error 2 >> >> > > Apologies for the breakage. > > Does it help to add the following to arch/x86/boot/startup/Makefile: > > OBJECT_FILES_NON_STANDARD := y > > ? yes, this fixes the issue. Reported-by: Srikanth Aithal <sraithal@amd.com> Tested-by: Srikanth Aithal <sraithal@amd.com> > >> >> Thanks, >> Srikanth Aithal <sraithal@amd.com> >> >> >> On 4/7/2025 12:03 AM, tip-bot2 for Ard Biesheuvel wrote: >>> The following commit has been merged into the x86/boot branch of tip: >>> >>> Commit-ID: 4f2d1bbc2c92a32fd612e6c3b51832d5c1c3678e >>> Gitweb: https://git.kernel.org/tip/4f2d1bbc2c92a32fd612e6c3b51832d5c1c3678e >>> Author: Ard Biesheuvel <ardb@kernel.org> >>> AuthorDate: Tue, 01 Apr 2025 15:34:20 +02:00 >>> Committer: Ingo Molnar <mingo@kernel.org> >>> CommitterDate: Sun, 06 Apr 2025 20:15:14 +02:00 >>> >>> x86/boot: Move the EFI mixed mode startup code back under arch/x86, into startup/ >>> >>> Linus expressed a strong preference for arch-specific asm code (i.e., >>> virtually all of it) to reside under arch/ rather than anywhere else. >>> >>> So move the EFI mixed mode startup code back, and put it under >>> arch/x86/boot/startup/ where all shared x86 startup code is going to >>> live. >>> >>> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> >>> Signed-off-by: Ard Biesheuvel <ardb@kernel.org> >>> Signed-off-by: Ingo Molnar <mingo@kernel.org> >>> Cc: David Woodhouse <dwmw@amazon.co.uk> >>> Cc: H. Peter Anvin <hpa@zytor.com> >>> Cc: Kees Cook <keescook@chromium.org> >>> Link: https://lore.kernel.org/r/20250401133416.1436741-11-ardb+git@google.com >>> --- >>> arch/x86/boot/startup/Makefile | 3 +- >>> arch/x86/boot/startup/efi-mixed.S | 253 ++++++++++++++++++++++- >>> drivers/firmware/efi/libstub/Makefile | 1 +- >>> drivers/firmware/efi/libstub/x86-mixed.S | 253 +---------------------- >>> 4 files changed, 256 insertions(+), 254 deletions(-) >>> create mode 100644 arch/x86/boot/startup/efi-mixed.S >>> delete mode 100644 drivers/firmware/efi/libstub/x86-mixed.S >>> >>> diff --git a/arch/x86/boot/startup/Makefile b/arch/x86/boot/startup/Makefile >>> index 03519ef..73946a3 100644 >>> --- a/arch/x86/boot/startup/Makefile >>> +++ b/arch/x86/boot/startup/Makefile >>> @@ -1,3 +1,6 @@ >>> # SPDX-License-Identifier: GPL-2.0 >>> >>> +KBUILD_AFLAGS += -D__DISABLE_EXPORTS >>> + >>> lib-$(CONFIG_X86_64) += la57toggle.o >>> +lib-$(CONFIG_EFI_MIXED) += efi-mixed.o >>> diff --git a/arch/x86/boot/startup/efi-mixed.S b/arch/x86/boot/startup/efi-mixed.S >>> new file mode 100644 >>> index 0000000..e04ed99 >>> --- /dev/null >>> +++ b/arch/x86/boot/startup/efi-mixed.S >>> @@ -0,0 +1,253 @@ >>> +/* SPDX-License-Identifier: GPL-2.0 */ >>> +/* >>> + * Copyright (C) 2014, 2015 Intel Corporation; author Matt Fleming >>> + * >>> + * Early support for invoking 32-bit EFI services from a 64-bit kernel. >>> + * >>> + * Because this thunking occurs before ExitBootServices() we have to >>> + * restore the firmware's 32-bit GDT and IDT before we make EFI service >>> + * calls. >>> + * >>> + * On the plus side, we don't have to worry about mangling 64-bit >>> + * addresses into 32-bits because we're executing with an identity >>> + * mapped pagetable and haven't transitioned to 64-bit virtual addresses >>> + * yet. >>> + */ >>> + >>> +#include <linux/linkage.h> >>> +#include <asm/desc_defs.h> >>> +#include <asm/msr.h> >>> +#include <asm/page_types.h> >>> +#include <asm/pgtable_types.h> >>> +#include <asm/processor-flags.h> >>> +#include <asm/segment.h> >>> + >>> + .text >>> + .code32 >>> +#ifdef CONFIG_EFI_HANDOVER_PROTOCOL >>> +SYM_FUNC_START(efi32_stub_entry) >>> + call 1f >>> +1: popl %ecx >>> + >>> + /* Clear BSS */ >>> + xorl %eax, %eax >>> + leal (_bss - 1b)(%ecx), %edi >>> + leal (_ebss - 1b)(%ecx), %ecx >>> + subl %edi, %ecx >>> + shrl $2, %ecx >>> + cld >>> + rep stosl >>> + >>> + add $0x4, %esp /* Discard return address */ >>> + movl 8(%esp), %ebx /* struct boot_params pointer */ >>> + jmp efi32_startup >>> +SYM_FUNC_END(efi32_stub_entry) >>> +#endif >>> + >>> +/* >>> + * Called using a far call from __efi64_thunk() below, using the x86_64 SysV >>> + * ABI (except for R8/R9 which are inaccessible to 32-bit code - EAX/EBX are >>> + * used instead). EBP+16 points to the arguments passed via the stack. >>> + * >>> + * The first argument (EDI) is a pointer to the boot service or protocol, to >>> + * which the remaining arguments are passed, each truncated to 32 bits. >>> + */ >>> +SYM_FUNC_START_LOCAL(efi_enter32) >>> + /* >>> + * Convert x86-64 SysV ABI params to i386 ABI >>> + */ >>> + pushl 32(%ebp) /* Up to 3 args passed via the stack */ >>> + pushl 24(%ebp) >>> + pushl 16(%ebp) >>> + pushl %ebx /* R9 */ >>> + pushl %eax /* R8 */ >>> + pushl %ecx >>> + pushl %edx >>> + pushl %esi >>> + >>> + /* Disable paging */ >>> + movl %cr0, %eax >>> + btrl $X86_CR0_PG_BIT, %eax >>> + movl %eax, %cr0 >>> + >>> + /* Disable long mode via EFER */ >>> + movl $MSR_EFER, %ecx >>> + rdmsr >>> + btrl $_EFER_LME, %eax >>> + wrmsr >>> + >>> + call *%edi >>> + >>> + /* We must preserve return value */ >>> + movl %eax, %edi >>> + >>> + call efi32_enable_long_mode >>> + >>> + addl $32, %esp >>> + movl %edi, %eax >>> + lret >>> +SYM_FUNC_END(efi_enter32) >>> + >>> + .code64 >>> +SYM_FUNC_START(__efi64_thunk) >>> + push %rbp >>> + movl %esp, %ebp >>> + push %rbx >>> + >>> + /* Move args #5 and #6 into 32-bit accessible registers */ >>> + movl %r8d, %eax >>> + movl %r9d, %ebx >>> + >>> + lcalll *efi32_call(%rip) >>> + >>> + pop %rbx >>> + pop %rbp >>> + RET >>> +SYM_FUNC_END(__efi64_thunk) >>> + >>> + .code32 >>> +SYM_FUNC_START_LOCAL(efi32_enable_long_mode) >>> + movl %cr4, %eax >>> + btsl $(X86_CR4_PAE_BIT), %eax >>> + movl %eax, %cr4 >>> + >>> + movl $MSR_EFER, %ecx >>> + rdmsr >>> + btsl $_EFER_LME, %eax >>> + wrmsr >>> + >>> + /* Disable interrupts - the firmware's IDT does not work in long mode */ >>> + cli >>> + >>> + /* Enable paging */ >>> + movl %cr0, %eax >>> + btsl $X86_CR0_PG_BIT, %eax >>> + movl %eax, %cr0 >>> + ret >>> +SYM_FUNC_END(efi32_enable_long_mode) >>> + >>> +/* >>> + * This is the common EFI stub entry point for mixed mode. It sets up the GDT >>> + * and page tables needed for 64-bit execution, after which it calls the >>> + * common 64-bit EFI entrypoint efi_stub_entry(). >>> + * >>> + * Arguments: 0(%esp) image handle >>> + * 4(%esp) EFI system table pointer >>> + * %ebx struct boot_params pointer (or NULL) >>> + * >>> + * Since this is the point of no return for ordinary execution, no registers >>> + * are considered live except for the function parameters. [Note that the EFI >>> + * stub may still exit and return to the firmware using the Exit() EFI boot >>> + * service.] >>> + */ >>> +SYM_FUNC_START_LOCAL(efi32_startup) >>> + movl %esp, %ebp >>> + >>> + subl $8, %esp >>> + sgdtl (%esp) /* Save GDT descriptor to the stack */ >>> + movl 2(%esp), %esi /* Existing GDT pointer */ >>> + movzwl (%esp), %ecx /* Existing GDT limit */ >>> + inc %ecx /* Existing GDT size */ >>> + andl $~7, %ecx /* Ensure size is multiple of 8 */ >>> + >>> + subl %ecx, %esp /* Allocate new GDT */ >>> + andl $~15, %esp /* Realign the stack */ >>> + movl %esp, %edi /* New GDT address */ >>> + leal 7(%ecx), %eax /* New GDT limit */ >>> + pushw %cx /* Push 64-bit CS (for LJMP below) */ >>> + pushl %edi /* Push new GDT address */ >>> + pushw %ax /* Push new GDT limit */ >>> + >>> + /* Copy GDT to the stack and add a 64-bit code segment at the end */ >>> + movl $GDT_ENTRY(DESC_CODE64, 0, 0xfffff) & 0xffffffff, (%edi,%ecx) >>> + movl $GDT_ENTRY(DESC_CODE64, 0, 0xfffff) >> 32, 4(%edi,%ecx) >>> + shrl $2, %ecx >>> + cld >>> + rep movsl /* Copy the firmware GDT */ >>> + lgdtl (%esp) /* Switch to the new GDT */ >>> + >>> + call 1f >>> +1: pop %edi >>> + >>> + /* Record mixed mode entry */ >>> + movb $0x0, (efi_is64 - 1b)(%edi) >>> + >>> + /* Set up indirect far call to re-enter 32-bit mode */ >>> + leal (efi32_call - 1b)(%edi), %eax >>> + addl %eax, (%eax) >>> + movw %cs, 4(%eax) >>> + >>> + /* Disable paging */ >>> + movl %cr0, %eax >>> + btrl $X86_CR0_PG_BIT, %eax >>> + movl %eax, %cr0 >>> + >>> + /* Set up 1:1 mapping */ >>> + leal (pte - 1b)(%edi), %eax >>> + movl $_PAGE_PRESENT | _PAGE_RW | _PAGE_PSE, %ecx >>> + leal (_PAGE_PRESENT | _PAGE_RW)(%eax), %edx >>> +2: movl %ecx, (%eax) >>> + addl $8, %eax >>> + addl $PMD_SIZE, %ecx >>> + jnc 2b >>> + >>> + movl $PAGE_SIZE, %ecx >>> + .irpc l, 0123 >>> + movl %edx, \l * 8(%eax) >>> + addl %ecx, %edx >>> + .endr >>> + addl %ecx, %eax >>> + movl %edx, (%eax) >>> + movl %eax, %cr3 >>> + >>> + call efi32_enable_long_mode >>> + >>> + /* Set up far jump to 64-bit mode (CS is already on the stack) */ >>> + leal (efi_stub_entry - 1b)(%edi), %eax >>> + movl %eax, 2(%esp) >>> + >>> + movl 0(%ebp), %edi >>> + movl 4(%ebp), %esi >>> + movl %ebx, %edx >>> + ljmpl *2(%esp) >>> +SYM_FUNC_END(efi32_startup) >>> + >>> +/* >>> + * efi_status_t efi32_pe_entry(efi_handle_t image_handle, >>> + * efi_system_table_32_t *sys_table) >>> + */ >>> +SYM_FUNC_START(efi32_pe_entry) >>> + pushl %ebx // save callee-save registers >>> + >>> + /* Check whether the CPU supports long mode */ >>> + movl $0x80000001, %eax // assume extended info support >>> + cpuid >>> + btl $29, %edx // check long mode bit >>> + jnc 1f >>> + leal 8(%esp), %esp // preserve stack alignment >>> + xor %ebx, %ebx // no struct boot_params pointer >>> + jmp efi32_startup // only ESP and EBX remain live >>> +1: movl $0x80000003, %eax // EFI_UNSUPPORTED >>> + popl %ebx >>> + RET >>> +SYM_FUNC_END(efi32_pe_entry) >>> + >>> +#ifdef CONFIG_EFI_HANDOVER_PROTOCOL >>> + .org efi32_stub_entry + 0x200 >>> + .code64 >>> +SYM_FUNC_START_NOALIGN(efi64_stub_entry) >>> + jmp efi_handover_entry >>> +SYM_FUNC_END(efi64_stub_entry) >>> +#endif >>> + >>> + .data >>> + .balign 8 >>> +SYM_DATA_START_LOCAL(efi32_call) >>> + .long efi_enter32 - . >>> + .word 0x0 >>> +SYM_DATA_END(efi32_call) >>> +SYM_DATA(efi_is64, .byte 1) >>> + >>> + .bss >>> + .balign PAGE_SIZE >>> +SYM_DATA_LOCAL(pte, .fill 6 * PAGE_SIZE, 1, 0) >>> diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile >>> index d23a1b9..2f17339 100644 >>> --- a/drivers/firmware/efi/libstub/Makefile >>> +++ b/drivers/firmware/efi/libstub/Makefile >>> @@ -85,7 +85,6 @@ lib-$(CONFIG_EFI_GENERIC_STUB) += efi-stub.o string.o intrinsics.o systable.o \ >>> lib-$(CONFIG_ARM) += arm32-stub.o >>> lib-$(CONFIG_ARM64) += kaslr.o arm64.o arm64-stub.o smbios.o >>> lib-$(CONFIG_X86) += x86-stub.o smbios.o >>> -lib-$(CONFIG_EFI_MIXED) += x86-mixed.o >>> lib-$(CONFIG_X86_64) += x86-5lvl.o >>> lib-$(CONFIG_RISCV) += kaslr.o riscv.o riscv-stub.o >>> lib-$(CONFIG_LOONGARCH) += loongarch.o loongarch-stub.o >>> diff --git a/drivers/firmware/efi/libstub/x86-mixed.S b/drivers/firmware/efi/libstub/x86-mixed.S >>> deleted file mode 100644 >>> index e04ed99..0000000 >>> --- a/drivers/firmware/efi/libstub/x86-mixed.S >>> +++ /dev/null >>> @@ -1,253 +0,0 @@ >>> -/* SPDX-License-Identifier: GPL-2.0 */ >>> -/* >>> - * Copyright (C) 2014, 2015 Intel Corporation; author Matt Fleming >>> - * >>> - * Early support for invoking 32-bit EFI services from a 64-bit kernel. >>> - * >>> - * Because this thunking occurs before ExitBootServices() we have to >>> - * restore the firmware's 32-bit GDT and IDT before we make EFI service >>> - * calls. >>> - * >>> - * On the plus side, we don't have to worry about mangling 64-bit >>> - * addresses into 32-bits because we're executing with an identity >>> - * mapped pagetable and haven't transitioned to 64-bit virtual addresses >>> - * yet. >>> - */ >>> - >>> -#include <linux/linkage.h> >>> -#include <asm/desc_defs.h> >>> -#include <asm/msr.h> >>> -#include <asm/page_types.h> >>> -#include <asm/pgtable_types.h> >>> -#include <asm/processor-flags.h> >>> -#include <asm/segment.h> >>> - >>> - .text >>> - .code32 >>> -#ifdef CONFIG_EFI_HANDOVER_PROTOCOL >>> -SYM_FUNC_START(efi32_stub_entry) >>> - call 1f >>> -1: popl %ecx >>> - >>> - /* Clear BSS */ >>> - xorl %eax, %eax >>> - leal (_bss - 1b)(%ecx), %edi >>> - leal (_ebss - 1b)(%ecx), %ecx >>> - subl %edi, %ecx >>> - shrl $2, %ecx >>> - cld >>> - rep stosl >>> - >>> - add $0x4, %esp /* Discard return address */ >>> - movl 8(%esp), %ebx /* struct boot_params pointer */ >>> - jmp efi32_startup >>> -SYM_FUNC_END(efi32_stub_entry) >>> -#endif >>> - >>> -/* >>> - * Called using a far call from __efi64_thunk() below, using the x86_64 SysV >>> - * ABI (except for R8/R9 which are inaccessible to 32-bit code - EAX/EBX are >>> - * used instead). EBP+16 points to the arguments passed via the stack. >>> - * >>> - * The first argument (EDI) is a pointer to the boot service or protocol, to >>> - * which the remaining arguments are passed, each truncated to 32 bits. >>> - */ >>> -SYM_FUNC_START_LOCAL(efi_enter32) >>> - /* >>> - * Convert x86-64 SysV ABI params to i386 ABI >>> - */ >>> - pushl 32(%ebp) /* Up to 3 args passed via the stack */ >>> - pushl 24(%ebp) >>> - pushl 16(%ebp) >>> - pushl %ebx /* R9 */ >>> - pushl %eax /* R8 */ >>> - pushl %ecx >>> - pushl %edx >>> - pushl %esi >>> - >>> - /* Disable paging */ >>> - movl %cr0, %eax >>> - btrl $X86_CR0_PG_BIT, %eax >>> - movl %eax, %cr0 >>> - >>> - /* Disable long mode via EFER */ >>> - movl $MSR_EFER, %ecx >>> - rdmsr >>> - btrl $_EFER_LME, %eax >>> - wrmsr >>> - >>> - call *%edi >>> - >>> - /* We must preserve return value */ >>> - movl %eax, %edi >>> - >>> - call efi32_enable_long_mode >>> - >>> - addl $32, %esp >>> - movl %edi, %eax >>> - lret >>> -SYM_FUNC_END(efi_enter32) >>> - >>> - .code64 >>> -SYM_FUNC_START(__efi64_thunk) >>> - push %rbp >>> - movl %esp, %ebp >>> - push %rbx >>> - >>> - /* Move args #5 and #6 into 32-bit accessible registers */ >>> - movl %r8d, %eax >>> - movl %r9d, %ebx >>> - >>> - lcalll *efi32_call(%rip) >>> - >>> - pop %rbx >>> - pop %rbp >>> - RET >>> -SYM_FUNC_END(__efi64_thunk) >>> - >>> - .code32 >>> -SYM_FUNC_START_LOCAL(efi32_enable_long_mode) >>> - movl %cr4, %eax >>> - btsl $(X86_CR4_PAE_BIT), %eax >>> - movl %eax, %cr4 >>> - >>> - movl $MSR_EFER, %ecx >>> - rdmsr >>> - btsl $_EFER_LME, %eax >>> - wrmsr >>> - >>> - /* Disable interrupts - the firmware's IDT does not work in long mode */ >>> - cli >>> - >>> - /* Enable paging */ >>> - movl %cr0, %eax >>> - btsl $X86_CR0_PG_BIT, %eax >>> - movl %eax, %cr0 >>> - ret >>> -SYM_FUNC_END(efi32_enable_long_mode) >>> - >>> -/* >>> - * This is the common EFI stub entry point for mixed mode. It sets up the GDT >>> - * and page tables needed for 64-bit execution, after which it calls the >>> - * common 64-bit EFI entrypoint efi_stub_entry(). >>> - * >>> - * Arguments: 0(%esp) image handle >>> - * 4(%esp) EFI system table pointer >>> - * %ebx struct boot_params pointer (or NULL) >>> - * >>> - * Since this is the point of no return for ordinary execution, no registers >>> - * are considered live except for the function parameters. [Note that the EFI >>> - * stub may still exit and return to the firmware using the Exit() EFI boot >>> - * service.] >>> - */ >>> -SYM_FUNC_START_LOCAL(efi32_startup) >>> - movl %esp, %ebp >>> - >>> - subl $8, %esp >>> - sgdtl (%esp) /* Save GDT descriptor to the stack */ >>> - movl 2(%esp), %esi /* Existing GDT pointer */ >>> - movzwl (%esp), %ecx /* Existing GDT limit */ >>> - inc %ecx /* Existing GDT size */ >>> - andl $~7, %ecx /* Ensure size is multiple of 8 */ >>> - >>> - subl %ecx, %esp /* Allocate new GDT */ >>> - andl $~15, %esp /* Realign the stack */ >>> - movl %esp, %edi /* New GDT address */ >>> - leal 7(%ecx), %eax /* New GDT limit */ >>> - pushw %cx /* Push 64-bit CS (for LJMP below) */ >>> - pushl %edi /* Push new GDT address */ >>> - pushw %ax /* Push new GDT limit */ >>> - >>> - /* Copy GDT to the stack and add a 64-bit code segment at the end */ >>> - movl $GDT_ENTRY(DESC_CODE64, 0, 0xfffff) & 0xffffffff, (%edi,%ecx) >>> - movl $GDT_ENTRY(DESC_CODE64, 0, 0xfffff) >> 32, 4(%edi,%ecx) >>> - shrl $2, %ecx >>> - cld >>> - rep movsl /* Copy the firmware GDT */ >>> - lgdtl (%esp) /* Switch to the new GDT */ >>> - >>> - call 1f >>> -1: pop %edi >>> - >>> - /* Record mixed mode entry */ >>> - movb $0x0, (efi_is64 - 1b)(%edi) >>> - >>> - /* Set up indirect far call to re-enter 32-bit mode */ >>> - leal (efi32_call - 1b)(%edi), %eax >>> - addl %eax, (%eax) >>> - movw %cs, 4(%eax) >>> - >>> - /* Disable paging */ >>> - movl %cr0, %eax >>> - btrl $X86_CR0_PG_BIT, %eax >>> - movl %eax, %cr0 >>> - >>> - /* Set up 1:1 mapping */ >>> - leal (pte - 1b)(%edi), %eax >>> - movl $_PAGE_PRESENT | _PAGE_RW | _PAGE_PSE, %ecx >>> - leal (_PAGE_PRESENT | _PAGE_RW)(%eax), %edx >>> -2: movl %ecx, (%eax) >>> - addl $8, %eax >>> - addl $PMD_SIZE, %ecx >>> - jnc 2b >>> - >>> - movl $PAGE_SIZE, %ecx >>> - .irpc l, 0123 >>> - movl %edx, \l * 8(%eax) >>> - addl %ecx, %edx >>> - .endr >>> - addl %ecx, %eax >>> - movl %edx, (%eax) >>> - movl %eax, %cr3 >>> - >>> - call efi32_enable_long_mode >>> - >>> - /* Set up far jump to 64-bit mode (CS is already on the stack) */ >>> - leal (efi_stub_entry - 1b)(%edi), %eax >>> - movl %eax, 2(%esp) >>> - >>> - movl 0(%ebp), %edi >>> - movl 4(%ebp), %esi >>> - movl %ebx, %edx >>> - ljmpl *2(%esp) >>> -SYM_FUNC_END(efi32_startup) >>> - >>> -/* >>> - * efi_status_t efi32_pe_entry(efi_handle_t image_handle, >>> - * efi_system_table_32_t *sys_table) >>> - */ >>> -SYM_FUNC_START(efi32_pe_entry) >>> - pushl %ebx // save callee-save registers >>> - >>> - /* Check whether the CPU supports long mode */ >>> - movl $0x80000001, %eax // assume extended info support >>> - cpuid >>> - btl $29, %edx // check long mode bit >>> - jnc 1f >>> - leal 8(%esp), %esp // preserve stack alignment >>> - xor %ebx, %ebx // no struct boot_params pointer >>> - jmp efi32_startup // only ESP and EBX remain live >>> -1: movl $0x80000003, %eax // EFI_UNSUPPORTED >>> - popl %ebx >>> - RET >>> -SYM_FUNC_END(efi32_pe_entry) >>> - >>> -#ifdef CONFIG_EFI_HANDOVER_PROTOCOL >>> - .org efi32_stub_entry + 0x200 >>> - .code64 >>> -SYM_FUNC_START_NOALIGN(efi64_stub_entry) >>> - jmp efi_handover_entry >>> -SYM_FUNC_END(efi64_stub_entry) >>> -#endif >>> - >>> - .data >>> - .balign 8 >>> -SYM_DATA_START_LOCAL(efi32_call) >>> - .long efi_enter32 - . >>> - .word 0x0 >>> -SYM_DATA_END(efi32_call) >>> -SYM_DATA(efi_is64, .byte 1) >>> - >>> - .bss >>> - .balign PAGE_SIZE >>> -SYM_DATA_LOCAL(pte, .fill 6 * PAGE_SIZE, 1, 0) ^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [tip: x86/boot] x86/boot: Move the EFI mixed mode startup code back under arch/x86, into startup/ 2025-04-07 9:41 ` Aithal, Srikanth @ 2025-04-09 11:54 ` Aithal, Srikanth 2025-04-09 12:00 ` Ingo Molnar 0 siblings, 1 reply; 20+ messages in thread From: Aithal, Srikanth @ 2025-04-09 11:54 UTC (permalink / raw) To: Ard Biesheuvel Cc: linux-kernel, Ingo Molnar, David Woodhouse, H. Peter Anvin, Kees Cook, x86 On 4/7/2025 3:11 PM, Aithal, Srikanth wrote: > On 4/7/2025 2:00 PM, Ard Biesheuvel wrote: >> On Mon, 7 Apr 2025 at 10:38, Aithal, Srikanth <sraithal@amd.com> wrote: >>> >>> Hello, >>> >>> This commit breaks the build of next-20250407. The kernel config is >>> attached here. >>> >>> Build error: >>> >>> arch/x86/boot/startup/efi-mixed.o: warning: objtool: >>> efi32_stub_entry+0x0: unannotated intra-function call >>> make[3]: *** [scripts/Makefile.build:335: >>> arch/x86/boot/startup/efi-mixed.o] Error 255 >>> make[3]: *** Deleting file 'arch/x86/boot/startup/efi-mixed.o' >>> make[3]: *** Waiting for unfinished jobs.... >>> make[2]: *** [scripts/Makefile.build:461: arch/x86/boot/startup] Error 2 >>> make[2]: *** Waiting for unfinished jobs.... >>> make[1]: *** [/home/VT_BUILD/linux/Makefile:2006: .] Error 2 >>> make: *** [Makefile:248: __sub-make] Error 2 >>> >>> >> >> Apologies for the breakage. >> >> Does it help to add the following to arch/x86/boot/startup/Makefile: >> >> OBJECT_FILES_NON_STANDARD := y >> >> ? If the above is the solution, could you please let me know how soon it might be included in the linux-next build? > > yes, this fixes the issue. > > Reported-by: Srikanth Aithal <sraithal@amd.com> > Tested-by: Srikanth Aithal <sraithal@amd.com> > >> >>> >>> Thanks, >>> Srikanth Aithal <sraithal@amd.com> >>> >>> >>> On 4/7/2025 12:03 AM, tip-bot2 for Ard Biesheuvel wrote: >>>> The following commit has been merged into the x86/boot branch of tip: >>>> >>>> Commit-ID: 4f2d1bbc2c92a32fd612e6c3b51832d5c1c3678e >>>> Gitweb: https://git.kernel.org/ >>>> tip/4f2d1bbc2c92a32fd612e6c3b51832d5c1c3678e >>>> Author: Ard Biesheuvel <ardb@kernel.org> >>>> AuthorDate: Tue, 01 Apr 2025 15:34:20 +02:00 >>>> Committer: Ingo Molnar <mingo@kernel.org> >>>> CommitterDate: Sun, 06 Apr 2025 20:15:14 +02:00 >>>> >>>> x86/boot: Move the EFI mixed mode startup code back under arch/x86, >>>> into startup/ >>>> >>>> Linus expressed a strong preference for arch-specific asm code (i.e., >>>> virtually all of it) to reside under arch/ rather than anywhere else. >>>> >>>> So move the EFI mixed mode startup code back, and put it under >>>> arch/x86/boot/startup/ where all shared x86 startup code is going to >>>> live. >>>> >>>> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> >>>> Signed-off-by: Ard Biesheuvel <ardb@kernel.org> >>>> Signed-off-by: Ingo Molnar <mingo@kernel.org> >>>> Cc: David Woodhouse <dwmw@amazon.co.uk> >>>> Cc: H. Peter Anvin <hpa@zytor.com> >>>> Cc: Kees Cook <keescook@chromium.org> >>>> Link: https://lore.kernel.org/r/20250401133416.1436741-11- >>>> ardb+git@google.com >>>> --- >>>> arch/x86/boot/startup/Makefile | 3 +- >>>> arch/x86/boot/startup/efi-mixed.S | 253 ++++++++++++++++++ >>>> ++++- >>>> drivers/firmware/efi/libstub/Makefile | 1 +- >>>> drivers/firmware/efi/libstub/x86-mixed.S | 253 >>>> +---------------------- >>>> 4 files changed, 256 insertions(+), 254 deletions(-) >>>> create mode 100644 arch/x86/boot/startup/efi-mixed.S >>>> delete mode 100644 drivers/firmware/efi/libstub/x86-mixed.S >>>> >>>> diff --git a/arch/x86/boot/startup/Makefile b/arch/x86/boot/startup/ >>>> Makefile >>>> index 03519ef..73946a3 100644 >>>> --- a/arch/x86/boot/startup/Makefile >>>> +++ b/arch/x86/boot/startup/Makefile >>>> @@ -1,3 +1,6 @@ >>>> # SPDX-License-Identifier: GPL-2.0 >>>> >>>> +KBUILD_AFLAGS += -D__DISABLE_EXPORTS >>>> + >>>> lib-$(CONFIG_X86_64) += la57toggle.o >>>> +lib-$(CONFIG_EFI_MIXED) += efi-mixed.o >>>> diff --git a/arch/x86/boot/startup/efi-mixed.S b/arch/x86/boot/ >>>> startup/efi-mixed.S >>>> new file mode 100644 >>>> index 0000000..e04ed99 >>>> --- /dev/null >>>> +++ b/arch/x86/boot/startup/efi-mixed.S >>>> @@ -0,0 +1,253 @@ >>>> +/* SPDX-License-Identifier: GPL-2.0 */ >>>> +/* >>>> + * Copyright (C) 2014, 2015 Intel Corporation; author Matt Fleming >>>> + * >>>> + * Early support for invoking 32-bit EFI services from a 64-bit >>>> kernel. >>>> + * >>>> + * Because this thunking occurs before ExitBootServices() we have to >>>> + * restore the firmware's 32-bit GDT and IDT before we make EFI >>>> service >>>> + * calls. >>>> + * >>>> + * On the plus side, we don't have to worry about mangling 64-bit >>>> + * addresses into 32-bits because we're executing with an identity >>>> + * mapped pagetable and haven't transitioned to 64-bit virtual >>>> addresses >>>> + * yet. >>>> + */ >>>> + >>>> +#include <linux/linkage.h> >>>> +#include <asm/desc_defs.h> >>>> +#include <asm/msr.h> >>>> +#include <asm/page_types.h> >>>> +#include <asm/pgtable_types.h> >>>> +#include <asm/processor-flags.h> >>>> +#include <asm/segment.h> >>>> + >>>> + .text >>>> + .code32 >>>> +#ifdef CONFIG_EFI_HANDOVER_PROTOCOL >>>> +SYM_FUNC_START(efi32_stub_entry) >>>> + call 1f >>>> +1: popl %ecx >>>> + >>>> + /* Clear BSS */ >>>> + xorl %eax, %eax >>>> + leal (_bss - 1b)(%ecx), %edi >>>> + leal (_ebss - 1b)(%ecx), %ecx >>>> + subl %edi, %ecx >>>> + shrl $2, %ecx >>>> + cld >>>> + rep stosl >>>> + >>>> + add $0x4, %esp /* Discard return address */ >>>> + movl 8(%esp), %ebx /* struct boot_params pointer */ >>>> + jmp efi32_startup >>>> +SYM_FUNC_END(efi32_stub_entry) >>>> +#endif >>>> + >>>> +/* >>>> + * Called using a far call from __efi64_thunk() below, using the >>>> x86_64 SysV >>>> + * ABI (except for R8/R9 which are inaccessible to 32-bit code - >>>> EAX/EBX are >>>> + * used instead). EBP+16 points to the arguments passed via the >>>> stack. >>>> + * >>>> + * The first argument (EDI) is a pointer to the boot service or >>>> protocol, to >>>> + * which the remaining arguments are passed, each truncated to 32 >>>> bits. >>>> + */ >>>> +SYM_FUNC_START_LOCAL(efi_enter32) >>>> + /* >>>> + * Convert x86-64 SysV ABI params to i386 ABI >>>> + */ >>>> + pushl 32(%ebp) /* Up to 3 args passed via the stack */ >>>> + pushl 24(%ebp) >>>> + pushl 16(%ebp) >>>> + pushl %ebx /* R9 */ >>>> + pushl %eax /* R8 */ >>>> + pushl %ecx >>>> + pushl %edx >>>> + pushl %esi >>>> + >>>> + /* Disable paging */ >>>> + movl %cr0, %eax >>>> + btrl $X86_CR0_PG_BIT, %eax >>>> + movl %eax, %cr0 >>>> + >>>> + /* Disable long mode via EFER */ >>>> + movl $MSR_EFER, %ecx >>>> + rdmsr >>>> + btrl $_EFER_LME, %eax >>>> + wrmsr >>>> + >>>> + call *%edi >>>> + >>>> + /* We must preserve return value */ >>>> + movl %eax, %edi >>>> + >>>> + call efi32_enable_long_mode >>>> + >>>> + addl $32, %esp >>>> + movl %edi, %eax >>>> + lret >>>> +SYM_FUNC_END(efi_enter32) >>>> + >>>> + .code64 >>>> +SYM_FUNC_START(__efi64_thunk) >>>> + push %rbp >>>> + movl %esp, %ebp >>>> + push %rbx >>>> + >>>> + /* Move args #5 and #6 into 32-bit accessible registers */ >>>> + movl %r8d, %eax >>>> + movl %r9d, %ebx >>>> + >>>> + lcalll *efi32_call(%rip) >>>> + >>>> + pop %rbx >>>> + pop %rbp >>>> + RET >>>> +SYM_FUNC_END(__efi64_thunk) >>>> + >>>> + .code32 >>>> +SYM_FUNC_START_LOCAL(efi32_enable_long_mode) >>>> + movl %cr4, %eax >>>> + btsl $(X86_CR4_PAE_BIT), %eax >>>> + movl %eax, %cr4 >>>> + >>>> + movl $MSR_EFER, %ecx >>>> + rdmsr >>>> + btsl $_EFER_LME, %eax >>>> + wrmsr >>>> + >>>> + /* Disable interrupts - the firmware's IDT does not work in >>>> long mode */ >>>> + cli >>>> + >>>> + /* Enable paging */ >>>> + movl %cr0, %eax >>>> + btsl $X86_CR0_PG_BIT, %eax >>>> + movl %eax, %cr0 >>>> + ret >>>> +SYM_FUNC_END(efi32_enable_long_mode) >>>> + >>>> +/* >>>> + * This is the common EFI stub entry point for mixed mode. It sets >>>> up the GDT >>>> + * and page tables needed for 64-bit execution, after which it >>>> calls the >>>> + * common 64-bit EFI entrypoint efi_stub_entry(). >>>> + * >>>> + * Arguments: 0(%esp) image handle >>>> + * 4(%esp) EFI system table pointer >>>> + * %ebx struct boot_params pointer (or NULL) >>>> + * >>>> + * Since this is the point of no return for ordinary execution, no >>>> registers >>>> + * are considered live except for the function parameters. [Note >>>> that the EFI >>>> + * stub may still exit and return to the firmware using the Exit() >>>> EFI boot >>>> + * service.] >>>> + */ >>>> +SYM_FUNC_START_LOCAL(efi32_startup) >>>> + movl %esp, %ebp >>>> + >>>> + subl $8, %esp >>>> + sgdtl (%esp) /* Save GDT descriptor to the >>>> stack */ >>>> + movl 2(%esp), %esi /* Existing GDT pointer */ >>>> + movzwl (%esp), %ecx /* Existing GDT limit */ >>>> + inc %ecx /* Existing GDT size */ >>>> + andl $~7, %ecx /* Ensure size is multiple of >>>> 8 */ >>>> + >>>> + subl %ecx, %esp /* Allocate new GDT */ >>>> + andl $~15, %esp /* Realign the stack */ >>>> + movl %esp, %edi /* New GDT address */ >>>> + leal 7(%ecx), %eax /* New GDT limit */ >>>> + pushw %cx /* Push 64-bit CS (for LJMP >>>> below) */ >>>> + pushl %edi /* Push new GDT address */ >>>> + pushw %ax /* Push new GDT limit */ >>>> + >>>> + /* Copy GDT to the stack and add a 64-bit code segment at the >>>> end */ >>>> + movl $GDT_ENTRY(DESC_CODE64, 0, 0xfffff) & 0xffffffff, >>>> (%edi,%ecx) >>>> + movl $GDT_ENTRY(DESC_CODE64, 0, 0xfffff) >> 32, 4(%edi,%ecx) >>>> + shrl $2, %ecx >>>> + cld >>>> + rep movsl /* Copy the firmware GDT */ >>>> + lgdtl (%esp) /* Switch to the new GDT */ >>>> + >>>> + call 1f >>>> +1: pop %edi >>>> + >>>> + /* Record mixed mode entry */ >>>> + movb $0x0, (efi_is64 - 1b)(%edi) >>>> + >>>> + /* Set up indirect far call to re-enter 32-bit mode */ >>>> + leal (efi32_call - 1b)(%edi), %eax >>>> + addl %eax, (%eax) >>>> + movw %cs, 4(%eax) >>>> + >>>> + /* Disable paging */ >>>> + movl %cr0, %eax >>>> + btrl $X86_CR0_PG_BIT, %eax >>>> + movl %eax, %cr0 >>>> + >>>> + /* Set up 1:1 mapping */ >>>> + leal (pte - 1b)(%edi), %eax >>>> + movl $_PAGE_PRESENT | _PAGE_RW | _PAGE_PSE, %ecx >>>> + leal (_PAGE_PRESENT | _PAGE_RW)(%eax), %edx >>>> +2: movl %ecx, (%eax) >>>> + addl $8, %eax >>>> + addl $PMD_SIZE, %ecx >>>> + jnc 2b >>>> + >>>> + movl $PAGE_SIZE, %ecx >>>> + .irpc l, 0123 >>>> + movl %edx, \l * 8(%eax) >>>> + addl %ecx, %edx >>>> + .endr >>>> + addl %ecx, %eax >>>> + movl %edx, (%eax) >>>> + movl %eax, %cr3 >>>> + >>>> + call efi32_enable_long_mode >>>> + >>>> + /* Set up far jump to 64-bit mode (CS is already on the stack) */ >>>> + leal (efi_stub_entry - 1b)(%edi), %eax >>>> + movl %eax, 2(%esp) >>>> + >>>> + movl 0(%ebp), %edi >>>> + movl 4(%ebp), %esi >>>> + movl %ebx, %edx >>>> + ljmpl *2(%esp) >>>> +SYM_FUNC_END(efi32_startup) >>>> + >>>> +/* >>>> + * efi_status_t efi32_pe_entry(efi_handle_t image_handle, >>>> + * efi_system_table_32_t *sys_table) >>>> + */ >>>> +SYM_FUNC_START(efi32_pe_entry) >>>> + pushl %ebx // save callee-save >>>> registers >>>> + >>>> + /* Check whether the CPU supports long mode */ >>>> + movl $0x80000001, %eax // assume extended >>>> info support >>>> + cpuid >>>> + btl $29, %edx // check long mode bit >>>> + jnc 1f >>>> + leal 8(%esp), %esp // preserve stack >>>> alignment >>>> + xor %ebx, %ebx // no struct >>>> boot_params pointer >>>> + jmp efi32_startup // only ESP and EBX >>>> remain live >>>> +1: movl $0x80000003, %eax // EFI_UNSUPPORTED >>>> + popl %ebx >>>> + RET >>>> +SYM_FUNC_END(efi32_pe_entry) >>>> + >>>> +#ifdef CONFIG_EFI_HANDOVER_PROTOCOL >>>> + .org efi32_stub_entry + 0x200 >>>> + .code64 >>>> +SYM_FUNC_START_NOALIGN(efi64_stub_entry) >>>> + jmp efi_handover_entry >>>> +SYM_FUNC_END(efi64_stub_entry) >>>> +#endif >>>> + >>>> + .data >>>> + .balign 8 >>>> +SYM_DATA_START_LOCAL(efi32_call) >>>> + .long efi_enter32 - . >>>> + .word 0x0 >>>> +SYM_DATA_END(efi32_call) >>>> +SYM_DATA(efi_is64, .byte 1) >>>> + >>>> + .bss >>>> + .balign PAGE_SIZE >>>> +SYM_DATA_LOCAL(pte, .fill 6 * PAGE_SIZE, 1, 0) >>>> diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/ >>>> firmware/efi/libstub/Makefile >>>> index d23a1b9..2f17339 100644 >>>> --- a/drivers/firmware/efi/libstub/Makefile >>>> +++ b/drivers/firmware/efi/libstub/Makefile >>>> @@ -85,7 +85,6 @@ lib-$(CONFIG_EFI_GENERIC_STUB) += efi-stub.o >>>> string.o intrinsics.o systable.o \ >>>> lib-$(CONFIG_ARM) += arm32-stub.o >>>> lib-$(CONFIG_ARM64) += kaslr.o arm64.o arm64-stub.o smbios.o >>>> lib-$(CONFIG_X86) += x86-stub.o smbios.o >>>> -lib-$(CONFIG_EFI_MIXED) += x86-mixed.o >>>> lib-$(CONFIG_X86_64) += x86-5lvl.o >>>> lib-$(CONFIG_RISCV) += kaslr.o riscv.o riscv-stub.o >>>> lib-$(CONFIG_LOONGARCH) += loongarch.o loongarch-stub.o >>>> diff --git a/drivers/firmware/efi/libstub/x86-mixed.S b/drivers/ >>>> firmware/efi/libstub/x86-mixed.S >>>> deleted file mode 100644 >>>> index e04ed99..0000000 >>>> --- a/drivers/firmware/efi/libstub/x86-mixed.S >>>> +++ /dev/null >>>> @@ -1,253 +0,0 @@ >>>> -/* SPDX-License-Identifier: GPL-2.0 */ >>>> -/* >>>> - * Copyright (C) 2014, 2015 Intel Corporation; author Matt Fleming >>>> - * >>>> - * Early support for invoking 32-bit EFI services from a 64-bit >>>> kernel. >>>> - * >>>> - * Because this thunking occurs before ExitBootServices() we have to >>>> - * restore the firmware's 32-bit GDT and IDT before we make EFI >>>> service >>>> - * calls. >>>> - * >>>> - * On the plus side, we don't have to worry about mangling 64-bit >>>> - * addresses into 32-bits because we're executing with an identity >>>> - * mapped pagetable and haven't transitioned to 64-bit virtual >>>> addresses >>>> - * yet. >>>> - */ >>>> - >>>> -#include <linux/linkage.h> >>>> -#include <asm/desc_defs.h> >>>> -#include <asm/msr.h> >>>> -#include <asm/page_types.h> >>>> -#include <asm/pgtable_types.h> >>>> -#include <asm/processor-flags.h> >>>> -#include <asm/segment.h> >>>> - >>>> - .text >>>> - .code32 >>>> -#ifdef CONFIG_EFI_HANDOVER_PROTOCOL >>>> -SYM_FUNC_START(efi32_stub_entry) >>>> - call 1f >>>> -1: popl %ecx >>>> - >>>> - /* Clear BSS */ >>>> - xorl %eax, %eax >>>> - leal (_bss - 1b)(%ecx), %edi >>>> - leal (_ebss - 1b)(%ecx), %ecx >>>> - subl %edi, %ecx >>>> - shrl $2, %ecx >>>> - cld >>>> - rep stosl >>>> - >>>> - add $0x4, %esp /* Discard return address */ >>>> - movl 8(%esp), %ebx /* struct boot_params pointer */ >>>> - jmp efi32_startup >>>> -SYM_FUNC_END(efi32_stub_entry) >>>> -#endif >>>> - >>>> -/* >>>> - * Called using a far call from __efi64_thunk() below, using the >>>> x86_64 SysV >>>> - * ABI (except for R8/R9 which are inaccessible to 32-bit code - >>>> EAX/EBX are >>>> - * used instead). EBP+16 points to the arguments passed via the >>>> stack. >>>> - * >>>> - * The first argument (EDI) is a pointer to the boot service or >>>> protocol, to >>>> - * which the remaining arguments are passed, each truncated to 32 >>>> bits. >>>> - */ >>>> -SYM_FUNC_START_LOCAL(efi_enter32) >>>> - /* >>>> - * Convert x86-64 SysV ABI params to i386 ABI >>>> - */ >>>> - pushl 32(%ebp) /* Up to 3 args passed via the stack */ >>>> - pushl 24(%ebp) >>>> - pushl 16(%ebp) >>>> - pushl %ebx /* R9 */ >>>> - pushl %eax /* R8 */ >>>> - pushl %ecx >>>> - pushl %edx >>>> - pushl %esi >>>> - >>>> - /* Disable paging */ >>>> - movl %cr0, %eax >>>> - btrl $X86_CR0_PG_BIT, %eax >>>> - movl %eax, %cr0 >>>> - >>>> - /* Disable long mode via EFER */ >>>> - movl $MSR_EFER, %ecx >>>> - rdmsr >>>> - btrl $_EFER_LME, %eax >>>> - wrmsr >>>> - >>>> - call *%edi >>>> - >>>> - /* We must preserve return value */ >>>> - movl %eax, %edi >>>> - >>>> - call efi32_enable_long_mode >>>> - >>>> - addl $32, %esp >>>> - movl %edi, %eax >>>> - lret >>>> -SYM_FUNC_END(efi_enter32) >>>> - >>>> - .code64 >>>> -SYM_FUNC_START(__efi64_thunk) >>>> - push %rbp >>>> - movl %esp, %ebp >>>> - push %rbx >>>> - >>>> - /* Move args #5 and #6 into 32-bit accessible registers */ >>>> - movl %r8d, %eax >>>> - movl %r9d, %ebx >>>> - >>>> - lcalll *efi32_call(%rip) >>>> - >>>> - pop %rbx >>>> - pop %rbp >>>> - RET >>>> -SYM_FUNC_END(__efi64_thunk) >>>> - >>>> - .code32 >>>> -SYM_FUNC_START_LOCAL(efi32_enable_long_mode) >>>> - movl %cr4, %eax >>>> - btsl $(X86_CR4_PAE_BIT), %eax >>>> - movl %eax, %cr4 >>>> - >>>> - movl $MSR_EFER, %ecx >>>> - rdmsr >>>> - btsl $_EFER_LME, %eax >>>> - wrmsr >>>> - >>>> - /* Disable interrupts - the firmware's IDT does not work in >>>> long mode */ >>>> - cli >>>> - >>>> - /* Enable paging */ >>>> - movl %cr0, %eax >>>> - btsl $X86_CR0_PG_BIT, %eax >>>> - movl %eax, %cr0 >>>> - ret >>>> -SYM_FUNC_END(efi32_enable_long_mode) >>>> - >>>> -/* >>>> - * This is the common EFI stub entry point for mixed mode. It sets >>>> up the GDT >>>> - * and page tables needed for 64-bit execution, after which it >>>> calls the >>>> - * common 64-bit EFI entrypoint efi_stub_entry(). >>>> - * >>>> - * Arguments: 0(%esp) image handle >>>> - * 4(%esp) EFI system table pointer >>>> - * %ebx struct boot_params pointer (or NULL) >>>> - * >>>> - * Since this is the point of no return for ordinary execution, no >>>> registers >>>> - * are considered live except for the function parameters. [Note >>>> that the EFI >>>> - * stub may still exit and return to the firmware using the Exit() >>>> EFI boot >>>> - * service.] >>>> - */ >>>> -SYM_FUNC_START_LOCAL(efi32_startup) >>>> - movl %esp, %ebp >>>> - >>>> - subl $8, %esp >>>> - sgdtl (%esp) /* Save GDT descriptor to the >>>> stack */ >>>> - movl 2(%esp), %esi /* Existing GDT pointer */ >>>> - movzwl (%esp), %ecx /* Existing GDT limit */ >>>> - inc %ecx /* Existing GDT size */ >>>> - andl $~7, %ecx /* Ensure size is multiple of >>>> 8 */ >>>> - >>>> - subl %ecx, %esp /* Allocate new GDT */ >>>> - andl $~15, %esp /* Realign the stack */ >>>> - movl %esp, %edi /* New GDT address */ >>>> - leal 7(%ecx), %eax /* New GDT limit */ >>>> - pushw %cx /* Push 64-bit CS (for LJMP >>>> below) */ >>>> - pushl %edi /* Push new GDT address */ >>>> - pushw %ax /* Push new GDT limit */ >>>> - >>>> - /* Copy GDT to the stack and add a 64-bit code segment at the >>>> end */ >>>> - movl $GDT_ENTRY(DESC_CODE64, 0, 0xfffff) & 0xffffffff, >>>> (%edi,%ecx) >>>> - movl $GDT_ENTRY(DESC_CODE64, 0, 0xfffff) >> 32, 4(%edi,%ecx) >>>> - shrl $2, %ecx >>>> - cld >>>> - rep movsl /* Copy the firmware GDT */ >>>> - lgdtl (%esp) /* Switch to the new GDT */ >>>> - >>>> - call 1f >>>> -1: pop %edi >>>> - >>>> - /* Record mixed mode entry */ >>>> - movb $0x0, (efi_is64 - 1b)(%edi) >>>> - >>>> - /* Set up indirect far call to re-enter 32-bit mode */ >>>> - leal (efi32_call - 1b)(%edi), %eax >>>> - addl %eax, (%eax) >>>> - movw %cs, 4(%eax) >>>> - >>>> - /* Disable paging */ >>>> - movl %cr0, %eax >>>> - btrl $X86_CR0_PG_BIT, %eax >>>> - movl %eax, %cr0 >>>> - >>>> - /* Set up 1:1 mapping */ >>>> - leal (pte - 1b)(%edi), %eax >>>> - movl $_PAGE_PRESENT | _PAGE_RW | _PAGE_PSE, %ecx >>>> - leal (_PAGE_PRESENT | _PAGE_RW)(%eax), %edx >>>> -2: movl %ecx, (%eax) >>>> - addl $8, %eax >>>> - addl $PMD_SIZE, %ecx >>>> - jnc 2b >>>> - >>>> - movl $PAGE_SIZE, %ecx >>>> - .irpc l, 0123 >>>> - movl %edx, \l * 8(%eax) >>>> - addl %ecx, %edx >>>> - .endr >>>> - addl %ecx, %eax >>>> - movl %edx, (%eax) >>>> - movl %eax, %cr3 >>>> - >>>> - call efi32_enable_long_mode >>>> - >>>> - /* Set up far jump to 64-bit mode (CS is already on the stack) */ >>>> - leal (efi_stub_entry - 1b)(%edi), %eax >>>> - movl %eax, 2(%esp) >>>> - >>>> - movl 0(%ebp), %edi >>>> - movl 4(%ebp), %esi >>>> - movl %ebx, %edx >>>> - ljmpl *2(%esp) >>>> -SYM_FUNC_END(efi32_startup) >>>> - >>>> -/* >>>> - * efi_status_t efi32_pe_entry(efi_handle_t image_handle, >>>> - * efi_system_table_32_t *sys_table) >>>> - */ >>>> -SYM_FUNC_START(efi32_pe_entry) >>>> - pushl %ebx // save callee-save >>>> registers >>>> - >>>> - /* Check whether the CPU supports long mode */ >>>> - movl $0x80000001, %eax // assume extended >>>> info support >>>> - cpuid >>>> - btl $29, %edx // check long mode bit >>>> - jnc 1f >>>> - leal 8(%esp), %esp // preserve stack >>>> alignment >>>> - xor %ebx, %ebx // no struct >>>> boot_params pointer >>>> - jmp efi32_startup // only ESP and EBX >>>> remain live >>>> -1: movl $0x80000003, %eax // EFI_UNSUPPORTED >>>> - popl %ebx >>>> - RET >>>> -SYM_FUNC_END(efi32_pe_entry) >>>> - >>>> -#ifdef CONFIG_EFI_HANDOVER_PROTOCOL >>>> - .org efi32_stub_entry + 0x200 >>>> - .code64 >>>> -SYM_FUNC_START_NOALIGN(efi64_stub_entry) >>>> - jmp efi_handover_entry >>>> -SYM_FUNC_END(efi64_stub_entry) >>>> -#endif >>>> - >>>> - .data >>>> - .balign 8 >>>> -SYM_DATA_START_LOCAL(efi32_call) >>>> - .long efi_enter32 - . >>>> - .word 0x0 >>>> -SYM_DATA_END(efi32_call) >>>> -SYM_DATA(efi_is64, .byte 1) >>>> - >>>> - .bss >>>> - .balign PAGE_SIZE >>>> -SYM_DATA_LOCAL(pte, .fill 6 * PAGE_SIZE, 1, 0) > ^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [tip: x86/boot] x86/boot: Move the EFI mixed mode startup code back under arch/x86, into startup/ 2025-04-09 11:54 ` Aithal, Srikanth @ 2025-04-09 12:00 ` Ingo Molnar 0 siblings, 0 replies; 20+ messages in thread From: Ingo Molnar @ 2025-04-09 12:00 UTC (permalink / raw) To: Aithal, Srikanth Cc: Ard Biesheuvel, linux-kernel, David Woodhouse, H. Peter Anvin, Kees Cook, x86 * Aithal, Srikanth <sraithal@amd.com> wrote: > > > On 4/7/2025 3:11 PM, Aithal, Srikanth wrote: > > On 4/7/2025 2:00 PM, Ard Biesheuvel wrote: > > > On Mon, 7 Apr 2025 at 10:38, Aithal, Srikanth <sraithal@amd.com> wrote: > > > > > > > > Hello, > > > > > > > > This commit breaks the build of next-20250407. The kernel config is > > > > attached here. > > > > > > > > Build error: > > > > > > > > arch/x86/boot/startup/efi-mixed.o: warning: objtool: > > > > efi32_stub_entry+0x0: unannotated intra-function call > > > > make[3]: *** [scripts/Makefile.build:335: > > > > arch/x86/boot/startup/efi-mixed.o] Error 255 > > > > make[3]: *** Deleting file 'arch/x86/boot/startup/efi-mixed.o' > > > > make[3]: *** Waiting for unfinished jobs.... > > > > make[2]: *** [scripts/Makefile.build:461: arch/x86/boot/startup] Error 2 > > > > make[2]: *** Waiting for unfinished jobs.... > > > > make[1]: *** [/home/VT_BUILD/linux/Makefile:2006: .] Error 2 > > > > make: *** [Makefile:248: __sub-make] Error 2 > > > > > > > > > > > > > > Apologies for the breakage. > > > > > > Does it help to add the following to arch/x86/boot/startup/Makefile: > > > > > > OBJECT_FILES_NON_STANDARD := y > > > > > > ? > > > > If the above is the solution, could you please let me know how soon it might > be included in the linux-next build? Tomorrow's -next should have this all sorted out. Thanks, Ingo ^ permalink raw reply [flat|nested] 20+ messages in thread
* [RFC PATCH 4/6] x86/boot: Move early GDT/IDT setup code into startup/ 2025-04-01 13:34 [RFC PATCH 0/6] x86: Refactor and consolidate startup code Ard Biesheuvel ` (2 preceding siblings ...) 2025-04-01 13:34 ` [RFC PATCH 3/6] x86/boot: Move EFI mixed mode startup code back under arch/x86 Ard Biesheuvel @ 2025-04-01 13:34 ` Ard Biesheuvel 2025-04-06 18:33 ` [tip: x86/boot] x86/boot: Move the " tip-bot2 for Ard Biesheuvel 2025-04-01 13:34 ` [RFC PATCH 5/6] x86/boot: Move early kernel mapping " Ard Biesheuvel 2025-04-01 13:34 ` [RFC PATCH 6/6] x86/boot: Move early SME init " Ard Biesheuvel 5 siblings, 1 reply; 20+ messages in thread From: Ard Biesheuvel @ 2025-04-01 13:34 UTC (permalink / raw) To: linux-efi Cc: linux-kernel, x86, Ard Biesheuvel, Tom Lendacky, Dionna Amalie Glaze, Kevin Loughlin From: Ard Biesheuvel <ardb@kernel.org> Move the early GDT/IDT setup code that runs long before the kernel virtual mapping is up into arch/x86/boot/startup/, and build it in a way that ensures that the code tolerates being called from the 1:1 mapping of memory. This allows the RIP_REL_REF() macro uses to be dropped, and removes the need for emitting the code into the special .head.text section. Also tweak the sed symbol matching pattern in the decompressor to match on lower case 't' or 'b', as these will be emitted by Clang for symbols with hidden linkage. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> --- arch/x86/boot/compressed/Makefile | 2 +- arch/x86/boot/startup/Makefile | 15 ++++ arch/x86/boot/startup/gdt_idt.c | 82 ++++++++++++++++++++ arch/x86/kernel/head64.c | 74 ------------------ 4 files changed, 98 insertions(+), 75 deletions(-) diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile index 468e135de88e..48541cf54790 100644 --- a/arch/x86/boot/compressed/Makefile +++ b/arch/x86/boot/compressed/Makefile @@ -74,7 +74,7 @@ LDFLAGS_vmlinux += -T hostprogs := mkpiggy HOST_EXTRACFLAGS += -I$(srctree)/tools/include -sed-voffset := -e 's/^\([0-9a-fA-F]*\) [ABCDGRSTVW] \(_text\|__start_rodata\|__bss_start\|_end\)$$/\#define VO_\2 _AC(0x\1,UL)/p' +sed-voffset := -e 's/^\([0-9a-fA-F]*\) [ABbCDGRSTtVW] \(_text\|__start_rodata\|__bss_start\|_end\)$$/\#define VO_\2 _AC(0x\1,UL)/p' quiet_cmd_voffset = VOFFSET $@ cmd_voffset = $(NM) $< | sed -n $(sed-voffset) > $@ diff --git a/arch/x86/boot/startup/Makefile b/arch/x86/boot/startup/Makefile index 73946a3f6b3b..34b324cbd5a4 100644 --- a/arch/x86/boot/startup/Makefile +++ b/arch/x86/boot/startup/Makefile @@ -1,6 +1,21 @@ # SPDX-License-Identifier: GPL-2.0 KBUILD_AFLAGS += -D__DISABLE_EXPORTS +KBUILD_CFLAGS += -D__DISABLE_EXPORTS -mcmodel=small -fPIC \ + -Os -DDISABLE_BRANCH_PROFILING \ + $(DISABLE_STACKLEAK_PLUGIN) \ + -fno-stack-protector -D__NO_FORTIFY \ + -include $(srctree)/include/linux/hidden.h + +# disable ftrace hooks +KBUILD_CFLAGS := $(subst $(CC_FLAGS_FTRACE),,$(KBUILD_CFLAGS)) +KASAN_SANITIZE := n +KCSAN_SANITIZE := n +KMSAN_SANITIZE := n +UBSAN_SANITIZE := n +KCOV_INSTRUMENT := n + +obj-$(CONFIG_X86_64) += gdt_idt.o lib-$(CONFIG_X86_64) += la57toggle.o lib-$(CONFIG_EFI_MIXED) += efi-mixed.o diff --git a/arch/x86/boot/startup/gdt_idt.c b/arch/x86/boot/startup/gdt_idt.c new file mode 100644 index 000000000000..b382d5db2586 --- /dev/null +++ b/arch/x86/boot/startup/gdt_idt.c @@ -0,0 +1,82 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/linkage.h> +#include <linux/types.h> + +#include <asm/desc.h> +#include <asm/setup.h> +#include <asm/sev.h> +#include <asm/trapnr.h> + +/* + * Data structures and code used for IDT setup in head_64.S. The bringup-IDT is + * used until the idt_table takes over. On the boot CPU this happens in + * x86_64_start_kernel(), on secondary CPUs in start_secondary(). In both cases + * this happens in the functions called from head_64.S. + * + * The idt_table can't be used that early because all the code modifying it is + * in idt.c and can be instrumented by tracing or KASAN, which both don't work + * during early CPU bringup. Also the idt_table has the runtime vectors + * configured which require certain CPU state to be setup already (like TSS), + * which also hasn't happened yet in early CPU bringup. + */ +static gate_desc bringup_idt_table[NUM_EXCEPTION_VECTORS] __page_aligned_data; + +/* This may run while still in the direct mapping */ +static void startup_64_load_idt(void *vc_handler) +{ + struct desc_ptr desc = { + .address = (unsigned long)bringup_idt_table, + .size = sizeof(bringup_idt_table) - 1, + }; + struct idt_data data; + gate_desc idt_desc; + + /* @vc_handler is set only for a VMM Communication Exception */ + if (vc_handler) { + init_idt_data(&data, X86_TRAP_VC, vc_handler); + idt_init_desc(&idt_desc, &data); + native_write_idt_entry((gate_desc *)desc.address, X86_TRAP_VC, &idt_desc); + } + + native_load_idt(&desc); +} + +/* This is used when running on kernel addresses */ +void early_setup_idt(void) +{ + void *handler = NULL; + + if (IS_ENABLED(CONFIG_AMD_MEM_ENCRYPT)) { + setup_ghcb(); + handler = vc_boot_ghcb; + } + + startup_64_load_idt(handler); +} + +/* + * Setup boot CPU state needed before kernel switches to virtual addresses. + */ +void __init startup_64_setup_gdt_idt(void) +{ + void *handler = NULL; + + struct desc_ptr startup_gdt_descr = { + .address = (__force unsigned long)gdt_page.gdt, + .size = GDT_SIZE - 1, + }; + + /* Load GDT */ + native_load_gdt(&startup_gdt_descr); + + /* New GDT is live - reload data segment registers */ + asm volatile("movl %%eax, %%ds\n" + "movl %%eax, %%ss\n" + "movl %%eax, %%es\n" : : "a"(__KERNEL_DS) : "memory"); + + if (IS_ENABLED(CONFIG_AMD_MEM_ENCRYPT)) + handler = vc_no_ghcb; + + startup_64_load_idt(handler); +} diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index fa9b6339975f..5b993b545c7e 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -512,77 +512,3 @@ void __init __noreturn x86_64_start_reservations(char *real_mode_data) start_kernel(); } - -/* - * Data structures and code used for IDT setup in head_64.S. The bringup-IDT is - * used until the idt_table takes over. On the boot CPU this happens in - * x86_64_start_kernel(), on secondary CPUs in start_secondary(). In both cases - * this happens in the functions called from head_64.S. - * - * The idt_table can't be used that early because all the code modifying it is - * in idt.c and can be instrumented by tracing or KASAN, which both don't work - * during early CPU bringup. Also the idt_table has the runtime vectors - * configured which require certain CPU state to be setup already (like TSS), - * which also hasn't happened yet in early CPU bringup. - */ -static gate_desc bringup_idt_table[NUM_EXCEPTION_VECTORS] __page_aligned_data; - -/* This may run while still in the direct mapping */ -static void __head startup_64_load_idt(void *vc_handler) -{ - struct desc_ptr desc = { - .address = (unsigned long)&RIP_REL_REF(bringup_idt_table), - .size = sizeof(bringup_idt_table) - 1, - }; - struct idt_data data; - gate_desc idt_desc; - - /* @vc_handler is set only for a VMM Communication Exception */ - if (vc_handler) { - init_idt_data(&data, X86_TRAP_VC, vc_handler); - idt_init_desc(&idt_desc, &data); - native_write_idt_entry((gate_desc *)desc.address, X86_TRAP_VC, &idt_desc); - } - - native_load_idt(&desc); -} - -/* This is used when running on kernel addresses */ -void early_setup_idt(void) -{ - void *handler = NULL; - - if (IS_ENABLED(CONFIG_AMD_MEM_ENCRYPT)) { - setup_ghcb(); - handler = vc_boot_ghcb; - } - - startup_64_load_idt(handler); -} - -/* - * Setup boot CPU state needed before kernel switches to virtual addresses. - */ -void __head startup_64_setup_gdt_idt(void) -{ - struct desc_struct *gdt = (void *)(__force unsigned long)gdt_page.gdt; - void *handler = NULL; - - struct desc_ptr startup_gdt_descr = { - .address = (unsigned long)&RIP_REL_REF(*gdt), - .size = GDT_SIZE - 1, - }; - - /* Load GDT */ - native_load_gdt(&startup_gdt_descr); - - /* New GDT is live - reload data segment registers */ - asm volatile("movl %%eax, %%ds\n" - "movl %%eax, %%ss\n" - "movl %%eax, %%es\n" : : "a"(__KERNEL_DS) : "memory"); - - if (IS_ENABLED(CONFIG_AMD_MEM_ENCRYPT)) - handler = &RIP_REL_REF(vc_no_ghcb); - - startup_64_load_idt(handler); -} -- 2.49.0.472.ge94155a9ec-goog ^ permalink raw reply related [flat|nested] 20+ messages in thread
* [tip: x86/boot] x86/boot: Move the early GDT/IDT setup code into startup/ 2025-04-01 13:34 ` [RFC PATCH 4/6] x86/boot: Move early GDT/IDT setup code " Ard Biesheuvel @ 2025-04-06 18:33 ` tip-bot2 for Ard Biesheuvel 0 siblings, 0 replies; 20+ messages in thread From: tip-bot2 for Ard Biesheuvel @ 2025-04-06 18:33 UTC (permalink / raw) To: linux-tip-commits Cc: Ard Biesheuvel, Ingo Molnar, David Woodhouse, H. Peter Anvin, Kees Cook, Linus Torvalds, x86, linux-kernel The following commit has been merged into the x86/boot branch of tip: Commit-ID: cc34e658c6db493c1524077e95b42d478de58f2b Gitweb: https://git.kernel.org/tip/cc34e658c6db493c1524077e95b42d478de58f2b Author: Ard Biesheuvel <ardb@kernel.org> AuthorDate: Tue, 01 Apr 2025 15:34:21 +02:00 Committer: Ingo Molnar <mingo@kernel.org> CommitterDate: Sun, 06 Apr 2025 20:15:14 +02:00 x86/boot: Move the early GDT/IDT setup code into startup/ Move the early GDT/IDT setup code that runs long before the kernel virtual mapping is up into arch/x86/boot/startup/, and build it in a way that ensures that the code tolerates being called from the 1:1 mapping of memory. This allows the RIP_REL_REF() macro uses to be dropped, and removes the need for emitting the code into the special .head.text section. Also tweak the sed symbol matching pattern in the decompressor to match on lower case 't' or 'b', as these will be emitted by Clang for symbols with hidden linkage. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: David Woodhouse <dwmw@amazon.co.uk> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Kees Cook <keescook@chromium.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/20250401133416.1436741-12-ardb+git@google.com --- arch/x86/boot/compressed/Makefile | 2 +- arch/x86/boot/startup/Makefile | 15 +++++- arch/x86/boot/startup/gdt_idt.c | 82 ++++++++++++++++++++++++++++++- arch/x86/kernel/head64.c | 74 +--------------------------- 4 files changed, 98 insertions(+), 75 deletions(-) create mode 100644 arch/x86/boot/startup/gdt_idt.c diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile index 37b85ce..0fcad7b 100644 --- a/arch/x86/boot/compressed/Makefile +++ b/arch/x86/boot/compressed/Makefile @@ -73,7 +73,7 @@ LDFLAGS_vmlinux += -T hostprogs := mkpiggy HOST_EXTRACFLAGS += -I$(srctree)/tools/include -sed-voffset := -e 's/^\([0-9a-fA-F]*\) [ABCDGRSTVW] \(_text\|__start_rodata\|__bss_start\|_end\)$$/\#define VO_\2 _AC(0x\1,UL)/p' +sed-voffset := -e 's/^\([0-9a-fA-F]*\) [ABbCDGRSTtVW] \(_text\|__start_rodata\|__bss_start\|_end\)$$/\#define VO_\2 _AC(0x\1,UL)/p' quiet_cmd_voffset = VOFFSET $@ cmd_voffset = $(NM) $< | sed -n $(sed-voffset) > $@ diff --git a/arch/x86/boot/startup/Makefile b/arch/x86/boot/startup/Makefile index 73946a3..34b324c 100644 --- a/arch/x86/boot/startup/Makefile +++ b/arch/x86/boot/startup/Makefile @@ -1,6 +1,21 @@ # SPDX-License-Identifier: GPL-2.0 KBUILD_AFLAGS += -D__DISABLE_EXPORTS +KBUILD_CFLAGS += -D__DISABLE_EXPORTS -mcmodel=small -fPIC \ + -Os -DDISABLE_BRANCH_PROFILING \ + $(DISABLE_STACKLEAK_PLUGIN) \ + -fno-stack-protector -D__NO_FORTIFY \ + -include $(srctree)/include/linux/hidden.h + +# disable ftrace hooks +KBUILD_CFLAGS := $(subst $(CC_FLAGS_FTRACE),,$(KBUILD_CFLAGS)) +KASAN_SANITIZE := n +KCSAN_SANITIZE := n +KMSAN_SANITIZE := n +UBSAN_SANITIZE := n +KCOV_INSTRUMENT := n + +obj-$(CONFIG_X86_64) += gdt_idt.o lib-$(CONFIG_X86_64) += la57toggle.o lib-$(CONFIG_EFI_MIXED) += efi-mixed.o diff --git a/arch/x86/boot/startup/gdt_idt.c b/arch/x86/boot/startup/gdt_idt.c new file mode 100644 index 0000000..b382d5d --- /dev/null +++ b/arch/x86/boot/startup/gdt_idt.c @@ -0,0 +1,82 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/linkage.h> +#include <linux/types.h> + +#include <asm/desc.h> +#include <asm/setup.h> +#include <asm/sev.h> +#include <asm/trapnr.h> + +/* + * Data structures and code used for IDT setup in head_64.S. The bringup-IDT is + * used until the idt_table takes over. On the boot CPU this happens in + * x86_64_start_kernel(), on secondary CPUs in start_secondary(). In both cases + * this happens in the functions called from head_64.S. + * + * The idt_table can't be used that early because all the code modifying it is + * in idt.c and can be instrumented by tracing or KASAN, which both don't work + * during early CPU bringup. Also the idt_table has the runtime vectors + * configured which require certain CPU state to be setup already (like TSS), + * which also hasn't happened yet in early CPU bringup. + */ +static gate_desc bringup_idt_table[NUM_EXCEPTION_VECTORS] __page_aligned_data; + +/* This may run while still in the direct mapping */ +static void startup_64_load_idt(void *vc_handler) +{ + struct desc_ptr desc = { + .address = (unsigned long)bringup_idt_table, + .size = sizeof(bringup_idt_table) - 1, + }; + struct idt_data data; + gate_desc idt_desc; + + /* @vc_handler is set only for a VMM Communication Exception */ + if (vc_handler) { + init_idt_data(&data, X86_TRAP_VC, vc_handler); + idt_init_desc(&idt_desc, &data); + native_write_idt_entry((gate_desc *)desc.address, X86_TRAP_VC, &idt_desc); + } + + native_load_idt(&desc); +} + +/* This is used when running on kernel addresses */ +void early_setup_idt(void) +{ + void *handler = NULL; + + if (IS_ENABLED(CONFIG_AMD_MEM_ENCRYPT)) { + setup_ghcb(); + handler = vc_boot_ghcb; + } + + startup_64_load_idt(handler); +} + +/* + * Setup boot CPU state needed before kernel switches to virtual addresses. + */ +void __init startup_64_setup_gdt_idt(void) +{ + void *handler = NULL; + + struct desc_ptr startup_gdt_descr = { + .address = (__force unsigned long)gdt_page.gdt, + .size = GDT_SIZE - 1, + }; + + /* Load GDT */ + native_load_gdt(&startup_gdt_descr); + + /* New GDT is live - reload data segment registers */ + asm volatile("movl %%eax, %%ds\n" + "movl %%eax, %%ss\n" + "movl %%eax, %%es\n" : : "a"(__KERNEL_DS) : "memory"); + + if (IS_ENABLED(CONFIG_AMD_MEM_ENCRYPT)) + handler = vc_no_ghcb; + + startup_64_load_idt(handler); +} diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index fa9b633..5b993b5 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -512,77 +512,3 @@ void __init __noreturn x86_64_start_reservations(char *real_mode_data) start_kernel(); } - -/* - * Data structures and code used for IDT setup in head_64.S. The bringup-IDT is - * used until the idt_table takes over. On the boot CPU this happens in - * x86_64_start_kernel(), on secondary CPUs in start_secondary(). In both cases - * this happens in the functions called from head_64.S. - * - * The idt_table can't be used that early because all the code modifying it is - * in idt.c and can be instrumented by tracing or KASAN, which both don't work - * during early CPU bringup. Also the idt_table has the runtime vectors - * configured which require certain CPU state to be setup already (like TSS), - * which also hasn't happened yet in early CPU bringup. - */ -static gate_desc bringup_idt_table[NUM_EXCEPTION_VECTORS] __page_aligned_data; - -/* This may run while still in the direct mapping */ -static void __head startup_64_load_idt(void *vc_handler) -{ - struct desc_ptr desc = { - .address = (unsigned long)&RIP_REL_REF(bringup_idt_table), - .size = sizeof(bringup_idt_table) - 1, - }; - struct idt_data data; - gate_desc idt_desc; - - /* @vc_handler is set only for a VMM Communication Exception */ - if (vc_handler) { - init_idt_data(&data, X86_TRAP_VC, vc_handler); - idt_init_desc(&idt_desc, &data); - native_write_idt_entry((gate_desc *)desc.address, X86_TRAP_VC, &idt_desc); - } - - native_load_idt(&desc); -} - -/* This is used when running on kernel addresses */ -void early_setup_idt(void) -{ - void *handler = NULL; - - if (IS_ENABLED(CONFIG_AMD_MEM_ENCRYPT)) { - setup_ghcb(); - handler = vc_boot_ghcb; - } - - startup_64_load_idt(handler); -} - -/* - * Setup boot CPU state needed before kernel switches to virtual addresses. - */ -void __head startup_64_setup_gdt_idt(void) -{ - struct desc_struct *gdt = (void *)(__force unsigned long)gdt_page.gdt; - void *handler = NULL; - - struct desc_ptr startup_gdt_descr = { - .address = (unsigned long)&RIP_REL_REF(*gdt), - .size = GDT_SIZE - 1, - }; - - /* Load GDT */ - native_load_gdt(&startup_gdt_descr); - - /* New GDT is live - reload data segment registers */ - asm volatile("movl %%eax, %%ds\n" - "movl %%eax, %%ss\n" - "movl %%eax, %%es\n" : : "a"(__KERNEL_DS) : "memory"); - - if (IS_ENABLED(CONFIG_AMD_MEM_ENCRYPT)) - handler = &RIP_REL_REF(vc_no_ghcb); - - startup_64_load_idt(handler); -} ^ permalink raw reply related [flat|nested] 20+ messages in thread
* [RFC PATCH 5/6] x86/boot: Move early kernel mapping code into startup/ 2025-04-01 13:34 [RFC PATCH 0/6] x86: Refactor and consolidate startup code Ard Biesheuvel ` (3 preceding siblings ...) 2025-04-01 13:34 ` [RFC PATCH 4/6] x86/boot: Move early GDT/IDT setup code " Ard Biesheuvel @ 2025-04-01 13:34 ` Ard Biesheuvel 2025-04-06 18:32 ` [tip: x86/boot] x86/boot: Move the " tip-bot2 for Ard Biesheuvel 2025-04-06 18:51 ` [RFC PATCH 5/6] x86/boot: Move " Ingo Molnar 2025-04-01 13:34 ` [RFC PATCH 6/6] x86/boot: Move early SME init " Ard Biesheuvel 5 siblings, 2 replies; 20+ messages in thread From: Ard Biesheuvel @ 2025-04-01 13:34 UTC (permalink / raw) To: linux-efi Cc: linux-kernel, x86, Ard Biesheuvel, Tom Lendacky, Dionna Amalie Glaze, Kevin Loughlin From: Ard Biesheuvel <ardb@kernel.org> The startup code that constructs the kernel virtual mapping runs from the 1:1 mapping of memory itself, and therefore, cannot use absolute symbol references. Move this code into a separate source file under arch/x86/boot/startup/ where all such code will be kept from now on. Since all code here is constructed in a manner that ensures that it tolerates running from the 1:1 mapping of memory, any uses of the RIP_REL_REF() macro can be dropped, along with __head annotations for placing this code in a dedicated startup section. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> --- arch/x86/boot/startup/Makefile | 2 +- arch/x86/boot/startup/map_kernel.c | 232 ++++++++++++++++++++ arch/x86/kernel/head64.c | 228 +------------------ 3 files changed, 234 insertions(+), 228 deletions(-) diff --git a/arch/x86/boot/startup/Makefile b/arch/x86/boot/startup/Makefile index 34b324cbd5a4..01423063fec2 100644 --- a/arch/x86/boot/startup/Makefile +++ b/arch/x86/boot/startup/Makefile @@ -15,7 +15,7 @@ KMSAN_SANITIZE := n UBSAN_SANITIZE := n KCOV_INSTRUMENT := n -obj-$(CONFIG_X86_64) += gdt_idt.o +obj-$(CONFIG_X86_64) += gdt_idt.o map_kernel.o lib-$(CONFIG_X86_64) += la57toggle.o lib-$(CONFIG_EFI_MIXED) += efi-mixed.o diff --git a/arch/x86/boot/startup/map_kernel.c b/arch/x86/boot/startup/map_kernel.c new file mode 100644 index 000000000000..ba856be92d10 --- /dev/null +++ b/arch/x86/boot/startup/map_kernel.c @@ -0,0 +1,232 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/init.h> +#include <linux/linkage.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/pgtable.h> + +#include <asm/sections.h> +#include <asm/setup.h> +#include <asm/sev.h> + +extern pmd_t early_dynamic_pgts[EARLY_DYNAMIC_PAGE_TABLES][PTRS_PER_PMD]; +extern unsigned int next_early_pgt; + +#ifdef CONFIG_X86_5LEVEL +unsigned int __pgtable_l5_enabled __ro_after_init; +unsigned int pgdir_shift __ro_after_init = 39; +EXPORT_SYMBOL(pgdir_shift); +unsigned int ptrs_per_p4d __ro_after_init = 1; +EXPORT_SYMBOL(ptrs_per_p4d); +#endif + +#ifdef CONFIG_DYNAMIC_MEMORY_LAYOUT +unsigned long page_offset_base __ro_after_init = __PAGE_OFFSET_BASE_L4; +EXPORT_SYMBOL(page_offset_base); +unsigned long vmalloc_base __ro_after_init = __VMALLOC_BASE_L4; +EXPORT_SYMBOL(vmalloc_base); +unsigned long vmemmap_base __ro_after_init = __VMEMMAP_BASE_L4; +EXPORT_SYMBOL(vmemmap_base); +#endif + +static inline bool check_la57_support(void) +{ + if (!IS_ENABLED(CONFIG_X86_5LEVEL)) + return false; + + /* + * 5-level paging is detected and enabled at kernel decompression + * stage. Only check if it has been enabled there. + */ + if (!(native_read_cr4() & X86_CR4_LA57)) + return false; + + __pgtable_l5_enabled = 1; + pgdir_shift = 48; + ptrs_per_p4d = 512; + page_offset_base = __PAGE_OFFSET_BASE_L5; + vmalloc_base = __VMALLOC_BASE_L5; + vmemmap_base = __VMEMMAP_BASE_L5; + + return true; +} + +static unsigned long sme_postprocess_startup(struct boot_params *bp, + pmdval_t *pmd, + unsigned long p2v_offset) +{ + unsigned long paddr, paddr_end; + int i; + + /* Encrypt the kernel and related (if SME is active) */ + sme_encrypt_kernel(bp); + + /* + * Clear the memory encryption mask from the .bss..decrypted section. + * The bss section will be memset to zero later in the initialization so + * there is no need to zero it after changing the memory encryption + * attribute. + */ + if (sme_get_me_mask()) { + paddr = (unsigned long)__start_bss_decrypted; + paddr_end = (unsigned long)__end_bss_decrypted; + + for (; paddr < paddr_end; paddr += PMD_SIZE) { + /* + * On SNP, transition the page to shared in the RMP table so that + * it is consistent with the page table attribute change. + * + * __start_bss_decrypted has a virtual address in the high range + * mapping (kernel .text). PVALIDATE, by way of + * early_snp_set_memory_shared(), requires a valid virtual + * address but the kernel is currently running off of the identity + * mapping so use the PA to get a *currently* valid virtual address. + */ + early_snp_set_memory_shared(paddr, paddr, PTRS_PER_PMD); + + i = pmd_index(paddr - p2v_offset); + pmd[i] -= sme_get_me_mask(); + } + } + + /* + * Return the SME encryption mask (if SME is active) to be used as a + * modifier for the initial pgdir entry programmed into CR3. + */ + return sme_get_me_mask(); +} + +unsigned long __init __startup_64(unsigned long p2v_offset, + struct boot_params *bp) +{ + pmd_t (*early_pgts)[PTRS_PER_PMD] = early_dynamic_pgts; + unsigned long physaddr = (unsigned long)_text; + unsigned long va_text, va_end; + unsigned long pgtable_flags; + unsigned long load_delta; + pgdval_t *pgd; + p4dval_t *p4d; + pudval_t *pud; + pmdval_t *pmd, pmd_entry; + bool la57; + int i; + + la57 = check_la57_support(); + + /* Is the address too large? */ + if (physaddr >> MAX_PHYSMEM_BITS) + for (;;); + + /* + * Compute the delta between the address I am compiled to run at + * and the address I am actually running at. + */ + phys_base = load_delta = __START_KERNEL_map + p2v_offset; + + /* Is the address not 2M aligned? */ + if (load_delta & ~PMD_MASK) + for (;;); + + va_text = physaddr - p2v_offset; + va_end = (unsigned long)_end - p2v_offset; + + /* Include the SME encryption mask in the fixup value */ + load_delta += sme_get_me_mask(); + + /* Fixup the physical addresses in the page table */ + + pgd = &early_top_pgt[0].pgd; + pgd[pgd_index(__START_KERNEL_map)] += load_delta; + + if (IS_ENABLED(CONFIG_X86_5LEVEL) && la57) { + p4d = (p4dval_t *)level4_kernel_pgt; + p4d[MAX_PTRS_PER_P4D - 1] += load_delta; + + pgd[pgd_index(__START_KERNEL_map)] = (pgdval_t)p4d | _PAGE_TABLE; + } + + level3_kernel_pgt[PTRS_PER_PUD - 2].pud += load_delta; + level3_kernel_pgt[PTRS_PER_PUD - 1].pud += load_delta; + + for (i = FIXMAP_PMD_TOP; i > FIXMAP_PMD_TOP - FIXMAP_PMD_NUM; i--) + level2_fixmap_pgt[i].pmd += load_delta; + + /* + * Set up the identity mapping for the switchover. These + * entries should *NOT* have the global bit set! This also + * creates a bunch of nonsense entries but that is fine -- + * it avoids problems around wraparound. + */ + + pud = &early_pgts[0]->pmd; + pmd = &early_pgts[1]->pmd; + next_early_pgt = 2; + + pgtable_flags = _KERNPG_TABLE_NOENC + sme_get_me_mask(); + + if (la57) { + p4d = &early_pgts[next_early_pgt++]->pmd; + + i = (physaddr >> PGDIR_SHIFT) % PTRS_PER_PGD; + pgd[i + 0] = (pgdval_t)p4d + pgtable_flags; + pgd[i + 1] = (pgdval_t)p4d + pgtable_flags; + + i = physaddr >> P4D_SHIFT; + p4d[(i + 0) % PTRS_PER_P4D] = (pgdval_t)pud + pgtable_flags; + p4d[(i + 1) % PTRS_PER_P4D] = (pgdval_t)pud + pgtable_flags; + } else { + i = (physaddr >> PGDIR_SHIFT) % PTRS_PER_PGD; + pgd[i + 0] = (pgdval_t)pud + pgtable_flags; + pgd[i + 1] = (pgdval_t)pud + pgtable_flags; + } + + i = physaddr >> PUD_SHIFT; + pud[(i + 0) % PTRS_PER_PUD] = (pudval_t)pmd + pgtable_flags; + pud[(i + 1) % PTRS_PER_PUD] = (pudval_t)pmd + pgtable_flags; + + pmd_entry = __PAGE_KERNEL_LARGE_EXEC & ~_PAGE_GLOBAL; + /* Filter out unsupported __PAGE_KERNEL_* bits: */ + pmd_entry &= __supported_pte_mask; + pmd_entry += sme_get_me_mask(); + pmd_entry += physaddr; + + for (i = 0; i < DIV_ROUND_UP(va_end - va_text, PMD_SIZE); i++) { + int idx = i + (physaddr >> PMD_SHIFT); + + pmd[idx % PTRS_PER_PMD] = pmd_entry + i * PMD_SIZE; + } + + /* + * Fixup the kernel text+data virtual addresses. Note that + * we might write invalid pmds, when the kernel is relocated + * cleanup_highmap() fixes this up along with the mappings + * beyond _end. + * + * Only the region occupied by the kernel image has so far + * been checked against the table of usable memory regions + * provided by the firmware, so invalidate pages outside that + * region. A page table entry that maps to a reserved area of + * memory would allow processor speculation into that area, + * and on some hardware (particularly the UV platform) even + * speculative access to some reserved areas is caught as an + * error, causing the BIOS to halt the system. + */ + + pmd = &level2_kernel_pgt[0].pmd; + + /* invalidate pages before the kernel image */ + for (i = 0; i < pmd_index(va_text); i++) + pmd[i] &= ~_PAGE_PRESENT; + + /* fixup pages that are part of the kernel image */ + for (; i <= pmd_index(va_end); i++) + if (pmd[i] & _PAGE_PRESENT) + pmd[i] += load_delta; + + /* invalidate pages after the kernel image */ + for (; i < PTRS_PER_PMD; i++) + pmd[i] &= ~_PAGE_PRESENT; + + return sme_postprocess_startup(bp, pmd, p2v_offset); +} diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index 5b993b545c7e..9afb123a8676 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -47,235 +47,9 @@ * Manage page tables very early on. */ extern pmd_t early_dynamic_pgts[EARLY_DYNAMIC_PAGE_TABLES][PTRS_PER_PMD]; -static unsigned int __initdata next_early_pgt; +unsigned int __initdata next_early_pgt; pmdval_t early_pmd_flags = __PAGE_KERNEL_LARGE & ~(_PAGE_GLOBAL | _PAGE_NX); -#ifdef CONFIG_X86_5LEVEL -unsigned int __pgtable_l5_enabled __ro_after_init; -unsigned int pgdir_shift __ro_after_init = 39; -EXPORT_SYMBOL(pgdir_shift); -unsigned int ptrs_per_p4d __ro_after_init = 1; -EXPORT_SYMBOL(ptrs_per_p4d); -#endif - -#ifdef CONFIG_DYNAMIC_MEMORY_LAYOUT -unsigned long page_offset_base __ro_after_init = __PAGE_OFFSET_BASE_L4; -EXPORT_SYMBOL(page_offset_base); -unsigned long vmalloc_base __ro_after_init = __VMALLOC_BASE_L4; -EXPORT_SYMBOL(vmalloc_base); -unsigned long vmemmap_base __ro_after_init = __VMEMMAP_BASE_L4; -EXPORT_SYMBOL(vmemmap_base); -#endif - -static inline bool check_la57_support(void) -{ - if (!IS_ENABLED(CONFIG_X86_5LEVEL)) - return false; - - /* - * 5-level paging is detected and enabled at kernel decompression - * stage. Only check if it has been enabled there. - */ - if (!(native_read_cr4() & X86_CR4_LA57)) - return false; - - RIP_REL_REF(__pgtable_l5_enabled) = 1; - RIP_REL_REF(pgdir_shift) = 48; - RIP_REL_REF(ptrs_per_p4d) = 512; - RIP_REL_REF(page_offset_base) = __PAGE_OFFSET_BASE_L5; - RIP_REL_REF(vmalloc_base) = __VMALLOC_BASE_L5; - RIP_REL_REF(vmemmap_base) = __VMEMMAP_BASE_L5; - - return true; -} - -static unsigned long __head sme_postprocess_startup(struct boot_params *bp, - pmdval_t *pmd, - unsigned long p2v_offset) -{ - unsigned long paddr, paddr_end; - int i; - - /* Encrypt the kernel and related (if SME is active) */ - sme_encrypt_kernel(bp); - - /* - * Clear the memory encryption mask from the .bss..decrypted section. - * The bss section will be memset to zero later in the initialization so - * there is no need to zero it after changing the memory encryption - * attribute. - */ - if (sme_get_me_mask()) { - paddr = (unsigned long)&RIP_REL_REF(__start_bss_decrypted); - paddr_end = (unsigned long)&RIP_REL_REF(__end_bss_decrypted); - - for (; paddr < paddr_end; paddr += PMD_SIZE) { - /* - * On SNP, transition the page to shared in the RMP table so that - * it is consistent with the page table attribute change. - * - * __start_bss_decrypted has a virtual address in the high range - * mapping (kernel .text). PVALIDATE, by way of - * early_snp_set_memory_shared(), requires a valid virtual - * address but the kernel is currently running off of the identity - * mapping so use the PA to get a *currently* valid virtual address. - */ - early_snp_set_memory_shared(paddr, paddr, PTRS_PER_PMD); - - i = pmd_index(paddr - p2v_offset); - pmd[i] -= sme_get_me_mask(); - } - } - - /* - * Return the SME encryption mask (if SME is active) to be used as a - * modifier for the initial pgdir entry programmed into CR3. - */ - return sme_get_me_mask(); -} - -/* Code in __startup_64() can be relocated during execution, but the compiler - * doesn't have to generate PC-relative relocations when accessing globals from - * that function. Clang actually does not generate them, which leads to - * boot-time crashes. To work around this problem, every global pointer must - * be accessed using RIP_REL_REF(). Kernel virtual addresses can be determined - * by subtracting p2v_offset from the RIP-relative address. - */ -unsigned long __head __startup_64(unsigned long p2v_offset, - struct boot_params *bp) -{ - pmd_t (*early_pgts)[PTRS_PER_PMD] = RIP_REL_REF(early_dynamic_pgts); - unsigned long physaddr = (unsigned long)&RIP_REL_REF(_text); - unsigned long va_text, va_end; - unsigned long pgtable_flags; - unsigned long load_delta; - pgdval_t *pgd; - p4dval_t *p4d; - pudval_t *pud; - pmdval_t *pmd, pmd_entry; - bool la57; - int i; - - la57 = check_la57_support(); - - /* Is the address too large? */ - if (physaddr >> MAX_PHYSMEM_BITS) - for (;;); - - /* - * Compute the delta between the address I am compiled to run at - * and the address I am actually running at. - */ - load_delta = __START_KERNEL_map + p2v_offset; - RIP_REL_REF(phys_base) = load_delta; - - /* Is the address not 2M aligned? */ - if (load_delta & ~PMD_MASK) - for (;;); - - va_text = physaddr - p2v_offset; - va_end = (unsigned long)&RIP_REL_REF(_end) - p2v_offset; - - /* Include the SME encryption mask in the fixup value */ - load_delta += sme_get_me_mask(); - - /* Fixup the physical addresses in the page table */ - - pgd = &RIP_REL_REF(early_top_pgt)->pgd; - pgd[pgd_index(__START_KERNEL_map)] += load_delta; - - if (IS_ENABLED(CONFIG_X86_5LEVEL) && la57) { - p4d = (p4dval_t *)&RIP_REL_REF(level4_kernel_pgt); - p4d[MAX_PTRS_PER_P4D - 1] += load_delta; - - pgd[pgd_index(__START_KERNEL_map)] = (pgdval_t)p4d | _PAGE_TABLE; - } - - RIP_REL_REF(level3_kernel_pgt)[PTRS_PER_PUD - 2].pud += load_delta; - RIP_REL_REF(level3_kernel_pgt)[PTRS_PER_PUD - 1].pud += load_delta; - - for (i = FIXMAP_PMD_TOP; i > FIXMAP_PMD_TOP - FIXMAP_PMD_NUM; i--) - RIP_REL_REF(level2_fixmap_pgt)[i].pmd += load_delta; - - /* - * Set up the identity mapping for the switchover. These - * entries should *NOT* have the global bit set! This also - * creates a bunch of nonsense entries but that is fine -- - * it avoids problems around wraparound. - */ - - pud = &early_pgts[0]->pmd; - pmd = &early_pgts[1]->pmd; - RIP_REL_REF(next_early_pgt) = 2; - - pgtable_flags = _KERNPG_TABLE_NOENC + sme_get_me_mask(); - - if (la57) { - p4d = &early_pgts[RIP_REL_REF(next_early_pgt)++]->pmd; - - i = (physaddr >> PGDIR_SHIFT) % PTRS_PER_PGD; - pgd[i + 0] = (pgdval_t)p4d + pgtable_flags; - pgd[i + 1] = (pgdval_t)p4d + pgtable_flags; - - i = physaddr >> P4D_SHIFT; - p4d[(i + 0) % PTRS_PER_P4D] = (pgdval_t)pud + pgtable_flags; - p4d[(i + 1) % PTRS_PER_P4D] = (pgdval_t)pud + pgtable_flags; - } else { - i = (physaddr >> PGDIR_SHIFT) % PTRS_PER_PGD; - pgd[i + 0] = (pgdval_t)pud + pgtable_flags; - pgd[i + 1] = (pgdval_t)pud + pgtable_flags; - } - - i = physaddr >> PUD_SHIFT; - pud[(i + 0) % PTRS_PER_PUD] = (pudval_t)pmd + pgtable_flags; - pud[(i + 1) % PTRS_PER_PUD] = (pudval_t)pmd + pgtable_flags; - - pmd_entry = __PAGE_KERNEL_LARGE_EXEC & ~_PAGE_GLOBAL; - /* Filter out unsupported __PAGE_KERNEL_* bits: */ - pmd_entry &= RIP_REL_REF(__supported_pte_mask); - pmd_entry += sme_get_me_mask(); - pmd_entry += physaddr; - - for (i = 0; i < DIV_ROUND_UP(va_end - va_text, PMD_SIZE); i++) { - int idx = i + (physaddr >> PMD_SHIFT); - - pmd[idx % PTRS_PER_PMD] = pmd_entry + i * PMD_SIZE; - } - - /* - * Fixup the kernel text+data virtual addresses. Note that - * we might write invalid pmds, when the kernel is relocated - * cleanup_highmap() fixes this up along with the mappings - * beyond _end. - * - * Only the region occupied by the kernel image has so far - * been checked against the table of usable memory regions - * provided by the firmware, so invalidate pages outside that - * region. A page table entry that maps to a reserved area of - * memory would allow processor speculation into that area, - * and on some hardware (particularly the UV platform) even - * speculative access to some reserved areas is caught as an - * error, causing the BIOS to halt the system. - */ - - pmd = &RIP_REL_REF(level2_kernel_pgt)->pmd; - - /* invalidate pages before the kernel image */ - for (i = 0; i < pmd_index(va_text); i++) - pmd[i] &= ~_PAGE_PRESENT; - - /* fixup pages that are part of the kernel image */ - for (; i <= pmd_index(va_end); i++) - if (pmd[i] & _PAGE_PRESENT) - pmd[i] += load_delta; - - /* invalidate pages after the kernel image */ - for (; i < PTRS_PER_PMD; i++) - pmd[i] &= ~_PAGE_PRESENT; - - return sme_postprocess_startup(bp, pmd, p2v_offset); -} - /* Wipe all early page tables except for the kernel symbol map */ static void __init reset_early_page_tables(void) { -- 2.49.0.472.ge94155a9ec-goog ^ permalink raw reply related [flat|nested] 20+ messages in thread
* [tip: x86/boot] x86/boot: Move the early kernel mapping code into startup/ 2025-04-01 13:34 ` [RFC PATCH 5/6] x86/boot: Move early kernel mapping " Ard Biesheuvel @ 2025-04-06 18:32 ` tip-bot2 for Ard Biesheuvel 2025-04-06 18:51 ` [RFC PATCH 5/6] x86/boot: Move " Ingo Molnar 1 sibling, 0 replies; 20+ messages in thread From: tip-bot2 for Ard Biesheuvel @ 2025-04-06 18:32 UTC (permalink / raw) To: linux-tip-commits Cc: Ard Biesheuvel, Ingo Molnar, David Woodhouse, H. Peter Anvin, Kees Cook, Linus Torvalds, x86, linux-kernel The following commit has been merged into the x86/boot branch of tip: Commit-ID: 1c1f4adbb07ee6ead77050a0322fedfd19bc2861 Gitweb: https://git.kernel.org/tip/1c1f4adbb07ee6ead77050a0322fedfd19bc2861 Author: Ard Biesheuvel <ardb@kernel.org> AuthorDate: Tue, 01 Apr 2025 15:34:22 +02:00 Committer: Ingo Molnar <mingo@kernel.org> CommitterDate: Sun, 06 Apr 2025 20:15:15 +02:00 x86/boot: Move the early kernel mapping code into startup/ The startup code that constructs the kernel virtual mapping runs from the 1:1 mapping of memory itself, and therefore, cannot use absolute symbol references. Move this code into a separate source file under arch/x86/boot/startup/ where all such code will be kept from now on. Since all code here is constructed in a manner that ensures that it tolerates running from the 1:1 mapping of memory, any uses of the RIP_REL_REF() macro can be dropped, along with __head annotations for placing this code in a dedicated startup section. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: David Woodhouse <dwmw@amazon.co.uk> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Kees Cook <keescook@chromium.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/20250401133416.1436741-13-ardb+git@google.com --- arch/x86/boot/startup/Makefile | 2 +- arch/x86/boot/startup/map_kernel.c | 232 ++++++++++++++++++++++++++++- arch/x86/kernel/head64.c | 228 +---------------------------- 3 files changed, 234 insertions(+), 228 deletions(-) create mode 100644 arch/x86/boot/startup/map_kernel.c diff --git a/arch/x86/boot/startup/Makefile b/arch/x86/boot/startup/Makefile index 34b324c..0142306 100644 --- a/arch/x86/boot/startup/Makefile +++ b/arch/x86/boot/startup/Makefile @@ -15,7 +15,7 @@ KMSAN_SANITIZE := n UBSAN_SANITIZE := n KCOV_INSTRUMENT := n -obj-$(CONFIG_X86_64) += gdt_idt.o +obj-$(CONFIG_X86_64) += gdt_idt.o map_kernel.o lib-$(CONFIG_X86_64) += la57toggle.o lib-$(CONFIG_EFI_MIXED) += efi-mixed.o diff --git a/arch/x86/boot/startup/map_kernel.c b/arch/x86/boot/startup/map_kernel.c new file mode 100644 index 0000000..ba856be --- /dev/null +++ b/arch/x86/boot/startup/map_kernel.c @@ -0,0 +1,232 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/init.h> +#include <linux/linkage.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/pgtable.h> + +#include <asm/sections.h> +#include <asm/setup.h> +#include <asm/sev.h> + +extern pmd_t early_dynamic_pgts[EARLY_DYNAMIC_PAGE_TABLES][PTRS_PER_PMD]; +extern unsigned int next_early_pgt; + +#ifdef CONFIG_X86_5LEVEL +unsigned int __pgtable_l5_enabled __ro_after_init; +unsigned int pgdir_shift __ro_after_init = 39; +EXPORT_SYMBOL(pgdir_shift); +unsigned int ptrs_per_p4d __ro_after_init = 1; +EXPORT_SYMBOL(ptrs_per_p4d); +#endif + +#ifdef CONFIG_DYNAMIC_MEMORY_LAYOUT +unsigned long page_offset_base __ro_after_init = __PAGE_OFFSET_BASE_L4; +EXPORT_SYMBOL(page_offset_base); +unsigned long vmalloc_base __ro_after_init = __VMALLOC_BASE_L4; +EXPORT_SYMBOL(vmalloc_base); +unsigned long vmemmap_base __ro_after_init = __VMEMMAP_BASE_L4; +EXPORT_SYMBOL(vmemmap_base); +#endif + +static inline bool check_la57_support(void) +{ + if (!IS_ENABLED(CONFIG_X86_5LEVEL)) + return false; + + /* + * 5-level paging is detected and enabled at kernel decompression + * stage. Only check if it has been enabled there. + */ + if (!(native_read_cr4() & X86_CR4_LA57)) + return false; + + __pgtable_l5_enabled = 1; + pgdir_shift = 48; + ptrs_per_p4d = 512; + page_offset_base = __PAGE_OFFSET_BASE_L5; + vmalloc_base = __VMALLOC_BASE_L5; + vmemmap_base = __VMEMMAP_BASE_L5; + + return true; +} + +static unsigned long sme_postprocess_startup(struct boot_params *bp, + pmdval_t *pmd, + unsigned long p2v_offset) +{ + unsigned long paddr, paddr_end; + int i; + + /* Encrypt the kernel and related (if SME is active) */ + sme_encrypt_kernel(bp); + + /* + * Clear the memory encryption mask from the .bss..decrypted section. + * The bss section will be memset to zero later in the initialization so + * there is no need to zero it after changing the memory encryption + * attribute. + */ + if (sme_get_me_mask()) { + paddr = (unsigned long)__start_bss_decrypted; + paddr_end = (unsigned long)__end_bss_decrypted; + + for (; paddr < paddr_end; paddr += PMD_SIZE) { + /* + * On SNP, transition the page to shared in the RMP table so that + * it is consistent with the page table attribute change. + * + * __start_bss_decrypted has a virtual address in the high range + * mapping (kernel .text). PVALIDATE, by way of + * early_snp_set_memory_shared(), requires a valid virtual + * address but the kernel is currently running off of the identity + * mapping so use the PA to get a *currently* valid virtual address. + */ + early_snp_set_memory_shared(paddr, paddr, PTRS_PER_PMD); + + i = pmd_index(paddr - p2v_offset); + pmd[i] -= sme_get_me_mask(); + } + } + + /* + * Return the SME encryption mask (if SME is active) to be used as a + * modifier for the initial pgdir entry programmed into CR3. + */ + return sme_get_me_mask(); +} + +unsigned long __init __startup_64(unsigned long p2v_offset, + struct boot_params *bp) +{ + pmd_t (*early_pgts)[PTRS_PER_PMD] = early_dynamic_pgts; + unsigned long physaddr = (unsigned long)_text; + unsigned long va_text, va_end; + unsigned long pgtable_flags; + unsigned long load_delta; + pgdval_t *pgd; + p4dval_t *p4d; + pudval_t *pud; + pmdval_t *pmd, pmd_entry; + bool la57; + int i; + + la57 = check_la57_support(); + + /* Is the address too large? */ + if (physaddr >> MAX_PHYSMEM_BITS) + for (;;); + + /* + * Compute the delta between the address I am compiled to run at + * and the address I am actually running at. + */ + phys_base = load_delta = __START_KERNEL_map + p2v_offset; + + /* Is the address not 2M aligned? */ + if (load_delta & ~PMD_MASK) + for (;;); + + va_text = physaddr - p2v_offset; + va_end = (unsigned long)_end - p2v_offset; + + /* Include the SME encryption mask in the fixup value */ + load_delta += sme_get_me_mask(); + + /* Fixup the physical addresses in the page table */ + + pgd = &early_top_pgt[0].pgd; + pgd[pgd_index(__START_KERNEL_map)] += load_delta; + + if (IS_ENABLED(CONFIG_X86_5LEVEL) && la57) { + p4d = (p4dval_t *)level4_kernel_pgt; + p4d[MAX_PTRS_PER_P4D - 1] += load_delta; + + pgd[pgd_index(__START_KERNEL_map)] = (pgdval_t)p4d | _PAGE_TABLE; + } + + level3_kernel_pgt[PTRS_PER_PUD - 2].pud += load_delta; + level3_kernel_pgt[PTRS_PER_PUD - 1].pud += load_delta; + + for (i = FIXMAP_PMD_TOP; i > FIXMAP_PMD_TOP - FIXMAP_PMD_NUM; i--) + level2_fixmap_pgt[i].pmd += load_delta; + + /* + * Set up the identity mapping for the switchover. These + * entries should *NOT* have the global bit set! This also + * creates a bunch of nonsense entries but that is fine -- + * it avoids problems around wraparound. + */ + + pud = &early_pgts[0]->pmd; + pmd = &early_pgts[1]->pmd; + next_early_pgt = 2; + + pgtable_flags = _KERNPG_TABLE_NOENC + sme_get_me_mask(); + + if (la57) { + p4d = &early_pgts[next_early_pgt++]->pmd; + + i = (physaddr >> PGDIR_SHIFT) % PTRS_PER_PGD; + pgd[i + 0] = (pgdval_t)p4d + pgtable_flags; + pgd[i + 1] = (pgdval_t)p4d + pgtable_flags; + + i = physaddr >> P4D_SHIFT; + p4d[(i + 0) % PTRS_PER_P4D] = (pgdval_t)pud + pgtable_flags; + p4d[(i + 1) % PTRS_PER_P4D] = (pgdval_t)pud + pgtable_flags; + } else { + i = (physaddr >> PGDIR_SHIFT) % PTRS_PER_PGD; + pgd[i + 0] = (pgdval_t)pud + pgtable_flags; + pgd[i + 1] = (pgdval_t)pud + pgtable_flags; + } + + i = physaddr >> PUD_SHIFT; + pud[(i + 0) % PTRS_PER_PUD] = (pudval_t)pmd + pgtable_flags; + pud[(i + 1) % PTRS_PER_PUD] = (pudval_t)pmd + pgtable_flags; + + pmd_entry = __PAGE_KERNEL_LARGE_EXEC & ~_PAGE_GLOBAL; + /* Filter out unsupported __PAGE_KERNEL_* bits: */ + pmd_entry &= __supported_pte_mask; + pmd_entry += sme_get_me_mask(); + pmd_entry += physaddr; + + for (i = 0; i < DIV_ROUND_UP(va_end - va_text, PMD_SIZE); i++) { + int idx = i + (physaddr >> PMD_SHIFT); + + pmd[idx % PTRS_PER_PMD] = pmd_entry + i * PMD_SIZE; + } + + /* + * Fixup the kernel text+data virtual addresses. Note that + * we might write invalid pmds, when the kernel is relocated + * cleanup_highmap() fixes this up along with the mappings + * beyond _end. + * + * Only the region occupied by the kernel image has so far + * been checked against the table of usable memory regions + * provided by the firmware, so invalidate pages outside that + * region. A page table entry that maps to a reserved area of + * memory would allow processor speculation into that area, + * and on some hardware (particularly the UV platform) even + * speculative access to some reserved areas is caught as an + * error, causing the BIOS to halt the system. + */ + + pmd = &level2_kernel_pgt[0].pmd; + + /* invalidate pages before the kernel image */ + for (i = 0; i < pmd_index(va_text); i++) + pmd[i] &= ~_PAGE_PRESENT; + + /* fixup pages that are part of the kernel image */ + for (; i <= pmd_index(va_end); i++) + if (pmd[i] & _PAGE_PRESENT) + pmd[i] += load_delta; + + /* invalidate pages after the kernel image */ + for (; i < PTRS_PER_PMD; i++) + pmd[i] &= ~_PAGE_PRESENT; + + return sme_postprocess_startup(bp, pmd, p2v_offset); +} diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index 5b993b5..9afb123 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -47,235 +47,9 @@ * Manage page tables very early on. */ extern pmd_t early_dynamic_pgts[EARLY_DYNAMIC_PAGE_TABLES][PTRS_PER_PMD]; -static unsigned int __initdata next_early_pgt; +unsigned int __initdata next_early_pgt; pmdval_t early_pmd_flags = __PAGE_KERNEL_LARGE & ~(_PAGE_GLOBAL | _PAGE_NX); -#ifdef CONFIG_X86_5LEVEL -unsigned int __pgtable_l5_enabled __ro_after_init; -unsigned int pgdir_shift __ro_after_init = 39; -EXPORT_SYMBOL(pgdir_shift); -unsigned int ptrs_per_p4d __ro_after_init = 1; -EXPORT_SYMBOL(ptrs_per_p4d); -#endif - -#ifdef CONFIG_DYNAMIC_MEMORY_LAYOUT -unsigned long page_offset_base __ro_after_init = __PAGE_OFFSET_BASE_L4; -EXPORT_SYMBOL(page_offset_base); -unsigned long vmalloc_base __ro_after_init = __VMALLOC_BASE_L4; -EXPORT_SYMBOL(vmalloc_base); -unsigned long vmemmap_base __ro_after_init = __VMEMMAP_BASE_L4; -EXPORT_SYMBOL(vmemmap_base); -#endif - -static inline bool check_la57_support(void) -{ - if (!IS_ENABLED(CONFIG_X86_5LEVEL)) - return false; - - /* - * 5-level paging is detected and enabled at kernel decompression - * stage. Only check if it has been enabled there. - */ - if (!(native_read_cr4() & X86_CR4_LA57)) - return false; - - RIP_REL_REF(__pgtable_l5_enabled) = 1; - RIP_REL_REF(pgdir_shift) = 48; - RIP_REL_REF(ptrs_per_p4d) = 512; - RIP_REL_REF(page_offset_base) = __PAGE_OFFSET_BASE_L5; - RIP_REL_REF(vmalloc_base) = __VMALLOC_BASE_L5; - RIP_REL_REF(vmemmap_base) = __VMEMMAP_BASE_L5; - - return true; -} - -static unsigned long __head sme_postprocess_startup(struct boot_params *bp, - pmdval_t *pmd, - unsigned long p2v_offset) -{ - unsigned long paddr, paddr_end; - int i; - - /* Encrypt the kernel and related (if SME is active) */ - sme_encrypt_kernel(bp); - - /* - * Clear the memory encryption mask from the .bss..decrypted section. - * The bss section will be memset to zero later in the initialization so - * there is no need to zero it after changing the memory encryption - * attribute. - */ - if (sme_get_me_mask()) { - paddr = (unsigned long)&RIP_REL_REF(__start_bss_decrypted); - paddr_end = (unsigned long)&RIP_REL_REF(__end_bss_decrypted); - - for (; paddr < paddr_end; paddr += PMD_SIZE) { - /* - * On SNP, transition the page to shared in the RMP table so that - * it is consistent with the page table attribute change. - * - * __start_bss_decrypted has a virtual address in the high range - * mapping (kernel .text). PVALIDATE, by way of - * early_snp_set_memory_shared(), requires a valid virtual - * address but the kernel is currently running off of the identity - * mapping so use the PA to get a *currently* valid virtual address. - */ - early_snp_set_memory_shared(paddr, paddr, PTRS_PER_PMD); - - i = pmd_index(paddr - p2v_offset); - pmd[i] -= sme_get_me_mask(); - } - } - - /* - * Return the SME encryption mask (if SME is active) to be used as a - * modifier for the initial pgdir entry programmed into CR3. - */ - return sme_get_me_mask(); -} - -/* Code in __startup_64() can be relocated during execution, but the compiler - * doesn't have to generate PC-relative relocations when accessing globals from - * that function. Clang actually does not generate them, which leads to - * boot-time crashes. To work around this problem, every global pointer must - * be accessed using RIP_REL_REF(). Kernel virtual addresses can be determined - * by subtracting p2v_offset from the RIP-relative address. - */ -unsigned long __head __startup_64(unsigned long p2v_offset, - struct boot_params *bp) -{ - pmd_t (*early_pgts)[PTRS_PER_PMD] = RIP_REL_REF(early_dynamic_pgts); - unsigned long physaddr = (unsigned long)&RIP_REL_REF(_text); - unsigned long va_text, va_end; - unsigned long pgtable_flags; - unsigned long load_delta; - pgdval_t *pgd; - p4dval_t *p4d; - pudval_t *pud; - pmdval_t *pmd, pmd_entry; - bool la57; - int i; - - la57 = check_la57_support(); - - /* Is the address too large? */ - if (physaddr >> MAX_PHYSMEM_BITS) - for (;;); - - /* - * Compute the delta between the address I am compiled to run at - * and the address I am actually running at. - */ - load_delta = __START_KERNEL_map + p2v_offset; - RIP_REL_REF(phys_base) = load_delta; - - /* Is the address not 2M aligned? */ - if (load_delta & ~PMD_MASK) - for (;;); - - va_text = physaddr - p2v_offset; - va_end = (unsigned long)&RIP_REL_REF(_end) - p2v_offset; - - /* Include the SME encryption mask in the fixup value */ - load_delta += sme_get_me_mask(); - - /* Fixup the physical addresses in the page table */ - - pgd = &RIP_REL_REF(early_top_pgt)->pgd; - pgd[pgd_index(__START_KERNEL_map)] += load_delta; - - if (IS_ENABLED(CONFIG_X86_5LEVEL) && la57) { - p4d = (p4dval_t *)&RIP_REL_REF(level4_kernel_pgt); - p4d[MAX_PTRS_PER_P4D - 1] += load_delta; - - pgd[pgd_index(__START_KERNEL_map)] = (pgdval_t)p4d | _PAGE_TABLE; - } - - RIP_REL_REF(level3_kernel_pgt)[PTRS_PER_PUD - 2].pud += load_delta; - RIP_REL_REF(level3_kernel_pgt)[PTRS_PER_PUD - 1].pud += load_delta; - - for (i = FIXMAP_PMD_TOP; i > FIXMAP_PMD_TOP - FIXMAP_PMD_NUM; i--) - RIP_REL_REF(level2_fixmap_pgt)[i].pmd += load_delta; - - /* - * Set up the identity mapping for the switchover. These - * entries should *NOT* have the global bit set! This also - * creates a bunch of nonsense entries but that is fine -- - * it avoids problems around wraparound. - */ - - pud = &early_pgts[0]->pmd; - pmd = &early_pgts[1]->pmd; - RIP_REL_REF(next_early_pgt) = 2; - - pgtable_flags = _KERNPG_TABLE_NOENC + sme_get_me_mask(); - - if (la57) { - p4d = &early_pgts[RIP_REL_REF(next_early_pgt)++]->pmd; - - i = (physaddr >> PGDIR_SHIFT) % PTRS_PER_PGD; - pgd[i + 0] = (pgdval_t)p4d + pgtable_flags; - pgd[i + 1] = (pgdval_t)p4d + pgtable_flags; - - i = physaddr >> P4D_SHIFT; - p4d[(i + 0) % PTRS_PER_P4D] = (pgdval_t)pud + pgtable_flags; - p4d[(i + 1) % PTRS_PER_P4D] = (pgdval_t)pud + pgtable_flags; - } else { - i = (physaddr >> PGDIR_SHIFT) % PTRS_PER_PGD; - pgd[i + 0] = (pgdval_t)pud + pgtable_flags; - pgd[i + 1] = (pgdval_t)pud + pgtable_flags; - } - - i = physaddr >> PUD_SHIFT; - pud[(i + 0) % PTRS_PER_PUD] = (pudval_t)pmd + pgtable_flags; - pud[(i + 1) % PTRS_PER_PUD] = (pudval_t)pmd + pgtable_flags; - - pmd_entry = __PAGE_KERNEL_LARGE_EXEC & ~_PAGE_GLOBAL; - /* Filter out unsupported __PAGE_KERNEL_* bits: */ - pmd_entry &= RIP_REL_REF(__supported_pte_mask); - pmd_entry += sme_get_me_mask(); - pmd_entry += physaddr; - - for (i = 0; i < DIV_ROUND_UP(va_end - va_text, PMD_SIZE); i++) { - int idx = i + (physaddr >> PMD_SHIFT); - - pmd[idx % PTRS_PER_PMD] = pmd_entry + i * PMD_SIZE; - } - - /* - * Fixup the kernel text+data virtual addresses. Note that - * we might write invalid pmds, when the kernel is relocated - * cleanup_highmap() fixes this up along with the mappings - * beyond _end. - * - * Only the region occupied by the kernel image has so far - * been checked against the table of usable memory regions - * provided by the firmware, so invalidate pages outside that - * region. A page table entry that maps to a reserved area of - * memory would allow processor speculation into that area, - * and on some hardware (particularly the UV platform) even - * speculative access to some reserved areas is caught as an - * error, causing the BIOS to halt the system. - */ - - pmd = &RIP_REL_REF(level2_kernel_pgt)->pmd; - - /* invalidate pages before the kernel image */ - for (i = 0; i < pmd_index(va_text); i++) - pmd[i] &= ~_PAGE_PRESENT; - - /* fixup pages that are part of the kernel image */ - for (; i <= pmd_index(va_end); i++) - if (pmd[i] & _PAGE_PRESENT) - pmd[i] += load_delta; - - /* invalidate pages after the kernel image */ - for (; i < PTRS_PER_PMD; i++) - pmd[i] &= ~_PAGE_PRESENT; - - return sme_postprocess_startup(bp, pmd, p2v_offset); -} - /* Wipe all early page tables except for the kernel symbol map */ static void __init reset_early_page_tables(void) { ^ permalink raw reply related [flat|nested] 20+ messages in thread
* Re: [RFC PATCH 5/6] x86/boot: Move early kernel mapping code into startup/ 2025-04-01 13:34 ` [RFC PATCH 5/6] x86/boot: Move early kernel mapping " Ard Biesheuvel 2025-04-06 18:32 ` [tip: x86/boot] x86/boot: Move the " tip-bot2 for Ard Biesheuvel @ 2025-04-06 18:51 ` Ingo Molnar 2025-04-06 19:24 ` Ard Biesheuvel 1 sibling, 1 reply; 20+ messages in thread From: Ingo Molnar @ 2025-04-06 18:51 UTC (permalink / raw) To: Ard Biesheuvel Cc: linux-efi, linux-kernel, x86, Ard Biesheuvel, Tom Lendacky, Dionna Amalie Glaze, Kevin Loughlin * Ard Biesheuvel <ardb+git@google.com> wrote: > From: Ard Biesheuvel <ardb@kernel.org> > > The startup code that constructs the kernel virtual mapping runs from > the 1:1 mapping of memory itself, and therefore, cannot use absolute > symbol references. Move this code into a separate source file under > arch/x86/boot/startup/ where all such code will be kept from now on. > > Since all code here is constructed in a manner that ensures that it > tolerates running from the 1:1 mapping of memory, any uses of the > RIP_REL_REF() macro can be dropped, along with __head annotations for > placing this code in a dedicated startup section. > > Signed-off-by: Ard Biesheuvel <ardb@kernel.org> > --- > arch/x86/boot/startup/Makefile | 2 +- > arch/x86/boot/startup/map_kernel.c | 232 ++++++++++++++++++++ > arch/x86/kernel/head64.c | 228 +------------------ > 3 files changed, 234 insertions(+), 228 deletions(-) So this patch breaks the x86-64 allmodconfig build: ERROR: modpost: "page_offset_base" [arch/x86/crypto/aegis128-aesni.ko] undefined! ERROR: modpost: "vmemmap_base" [arch/x86/crypto/aegis128-aesni.ko] undefined! ERROR: modpost: "page_offset_base" [arch/x86/crypto/aesni-intel.ko] undefined! ERROR: modpost: "vmemmap_base" [arch/x86/crypto/aesni-intel.ko] undefined! I suppose EXPORT_SYMBOL() in the new startup code isn't properly extracted? Thanks, Ingo ^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [RFC PATCH 5/6] x86/boot: Move early kernel mapping code into startup/ 2025-04-06 18:51 ` [RFC PATCH 5/6] x86/boot: Move " Ingo Molnar @ 2025-04-06 19:24 ` Ard Biesheuvel 0 siblings, 0 replies; 20+ messages in thread From: Ard Biesheuvel @ 2025-04-06 19:24 UTC (permalink / raw) To: Ingo Molnar Cc: Ard Biesheuvel, linux-efi, linux-kernel, x86, Tom Lendacky, Dionna Amalie Glaze, Kevin Loughlin On Sun, 6 Apr 2025 at 21:51, Ingo Molnar <mingo@kernel.org> wrote: > > > * Ard Biesheuvel <ardb+git@google.com> wrote: > > > From: Ard Biesheuvel <ardb@kernel.org> > > > > The startup code that constructs the kernel virtual mapping runs from > > the 1:1 mapping of memory itself, and therefore, cannot use absolute > > symbol references. Move this code into a separate source file under > > arch/x86/boot/startup/ where all such code will be kept from now on. > > > > Since all code here is constructed in a manner that ensures that it > > tolerates running from the 1:1 mapping of memory, any uses of the > > RIP_REL_REF() macro can be dropped, along with __head annotations for > > placing this code in a dedicated startup section. > > > > Signed-off-by: Ard Biesheuvel <ardb@kernel.org> > > --- > > arch/x86/boot/startup/Makefile | 2 +- > > arch/x86/boot/startup/map_kernel.c | 232 ++++++++++++++++++++ > > arch/x86/kernel/head64.c | 228 +------------------ > > 3 files changed, 234 insertions(+), 228 deletions(-) > > So this patch breaks the x86-64 allmodconfig build: > > ERROR: modpost: "page_offset_base" [arch/x86/crypto/aegis128-aesni.ko] undefined! > ERROR: modpost: "vmemmap_base" [arch/x86/crypto/aegis128-aesni.ko] undefined! > ERROR: modpost: "page_offset_base" [arch/x86/crypto/aesni-intel.ko] undefined! > ERROR: modpost: "vmemmap_base" [arch/x86/crypto/aesni-intel.ko] undefined! > > I suppose EXPORT_SYMBOL() in the new startup code isn't properly > extracted? > No, and there is a fundamental issue here, as those exports use absolute references. I'll tweak this to keep these definitions in the old location. ^ permalink raw reply [flat|nested] 20+ messages in thread
* [RFC PATCH 6/6] x86/boot: Move early SME init code into startup/ 2025-04-01 13:34 [RFC PATCH 0/6] x86: Refactor and consolidate startup code Ard Biesheuvel ` (4 preceding siblings ...) 2025-04-01 13:34 ` [RFC PATCH 5/6] x86/boot: Move early kernel mapping " Ard Biesheuvel @ 2025-04-01 13:34 ` Ard Biesheuvel 2025-04-06 18:32 ` [tip: x86/boot] x86/boot: Move the " tip-bot2 for Ard Biesheuvel 5 siblings, 1 reply; 20+ messages in thread From: Ard Biesheuvel @ 2025-04-01 13:34 UTC (permalink / raw) To: linux-efi Cc: linux-kernel, x86, Ard Biesheuvel, Tom Lendacky, Dionna Amalie Glaze, Kevin Loughlin From: Ard Biesheuvel <ardb@kernel.org> Move the SME initialization code, which runs from the 1:1 mapping of memory as it operates on the kernel virtual mapping, into the new sub-directory arch/x86/boot/startup/ where all startup code will reside that needs to tolerate executing from the 1:1 mapping. This allows RIP_REL_REF() macro invocations and __head annotations to be dropped. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> --- arch/x86/boot/startup/Makefile | 1 + arch/x86/{mm/mem_encrypt_identity.c => boot/startup/sme.c} | 45 +++++++++----------- arch/x86/include/asm/mem_encrypt.h | 2 +- arch/x86/mm/Makefile | 6 --- 4 files changed, 23 insertions(+), 31 deletions(-) diff --git a/arch/x86/boot/startup/Makefile b/arch/x86/boot/startup/Makefile index 01423063fec2..480c2d2063a0 100644 --- a/arch/x86/boot/startup/Makefile +++ b/arch/x86/boot/startup/Makefile @@ -16,6 +16,7 @@ UBSAN_SANITIZE := n KCOV_INSTRUMENT := n obj-$(CONFIG_X86_64) += gdt_idt.o map_kernel.o +obj-$(CONFIG_AMD_MEM_ENCRYPT) += sme.o lib-$(CONFIG_X86_64) += la57toggle.o lib-$(CONFIG_EFI_MIXED) += efi-mixed.o diff --git a/arch/x86/mm/mem_encrypt_identity.c b/arch/x86/boot/startup/sme.c similarity index 92% rename from arch/x86/mm/mem_encrypt_identity.c rename to arch/x86/boot/startup/sme.c index 5eecdd92da10..85bd39652535 100644 --- a/arch/x86/mm/mem_encrypt_identity.c +++ b/arch/x86/boot/startup/sme.c @@ -45,8 +45,6 @@ #include <asm/coco.h> #include <asm/sev.h> -#include "mm_internal.h" - #define PGD_FLAGS _KERNPG_TABLE_NOENC #define P4D_FLAGS _KERNPG_TABLE_NOENC #define PUD_FLAGS _KERNPG_TABLE_NOENC @@ -93,7 +91,7 @@ struct sme_populate_pgd_data { */ static char sme_workarea[2 * PMD_SIZE] __section(".init.scratch"); -static void __head sme_clear_pgd(struct sme_populate_pgd_data *ppd) +static void __init sme_clear_pgd(struct sme_populate_pgd_data *ppd) { unsigned long pgd_start, pgd_end, pgd_size; pgd_t *pgd_p; @@ -108,7 +106,7 @@ static void __head sme_clear_pgd(struct sme_populate_pgd_data *ppd) memset(pgd_p, 0, pgd_size); } -static pud_t __head *sme_prepare_pgd(struct sme_populate_pgd_data *ppd) +static pud_t __init *sme_prepare_pgd(struct sme_populate_pgd_data *ppd) { pgd_t *pgd; p4d_t *p4d; @@ -145,7 +143,7 @@ static pud_t __head *sme_prepare_pgd(struct sme_populate_pgd_data *ppd) return pud; } -static void __head sme_populate_pgd_large(struct sme_populate_pgd_data *ppd) +static void __init sme_populate_pgd_large(struct sme_populate_pgd_data *ppd) { pud_t *pud; pmd_t *pmd; @@ -161,7 +159,7 @@ static void __head sme_populate_pgd_large(struct sme_populate_pgd_data *ppd) set_pmd(pmd, __pmd(ppd->paddr | ppd->pmd_flags)); } -static void __head sme_populate_pgd(struct sme_populate_pgd_data *ppd) +static void __init sme_populate_pgd(struct sme_populate_pgd_data *ppd) { pud_t *pud; pmd_t *pmd; @@ -187,7 +185,7 @@ static void __head sme_populate_pgd(struct sme_populate_pgd_data *ppd) set_pte(pte, __pte(ppd->paddr | ppd->pte_flags)); } -static void __head __sme_map_range_pmd(struct sme_populate_pgd_data *ppd) +static void __init __sme_map_range_pmd(struct sme_populate_pgd_data *ppd) { while (ppd->vaddr < ppd->vaddr_end) { sme_populate_pgd_large(ppd); @@ -197,7 +195,7 @@ static void __head __sme_map_range_pmd(struct sme_populate_pgd_data *ppd) } } -static void __head __sme_map_range_pte(struct sme_populate_pgd_data *ppd) +static void __init __sme_map_range_pte(struct sme_populate_pgd_data *ppd) { while (ppd->vaddr < ppd->vaddr_end) { sme_populate_pgd(ppd); @@ -207,7 +205,7 @@ static void __head __sme_map_range_pte(struct sme_populate_pgd_data *ppd) } } -static void __head __sme_map_range(struct sme_populate_pgd_data *ppd, +static void __init __sme_map_range(struct sme_populate_pgd_data *ppd, pmdval_t pmd_flags, pteval_t pte_flags) { unsigned long vaddr_end; @@ -231,22 +229,22 @@ static void __head __sme_map_range(struct sme_populate_pgd_data *ppd, __sme_map_range_pte(ppd); } -static void __head sme_map_range_encrypted(struct sme_populate_pgd_data *ppd) +static void __init sme_map_range_encrypted(struct sme_populate_pgd_data *ppd) { __sme_map_range(ppd, PMD_FLAGS_ENC, PTE_FLAGS_ENC); } -static void __head sme_map_range_decrypted(struct sme_populate_pgd_data *ppd) +static void __init sme_map_range_decrypted(struct sme_populate_pgd_data *ppd) { __sme_map_range(ppd, PMD_FLAGS_DEC, PTE_FLAGS_DEC); } -static void __head sme_map_range_decrypted_wp(struct sme_populate_pgd_data *ppd) +static void __init sme_map_range_decrypted_wp(struct sme_populate_pgd_data *ppd) { __sme_map_range(ppd, PMD_FLAGS_DEC_WP, PTE_FLAGS_DEC_WP); } -static unsigned long __head sme_pgtable_calc(unsigned long len) +static unsigned long __init sme_pgtable_calc(unsigned long len) { unsigned long entries = 0, tables = 0; @@ -283,7 +281,7 @@ static unsigned long __head sme_pgtable_calc(unsigned long len) return entries + tables; } -void __head sme_encrypt_kernel(struct boot_params *bp) +void __init sme_encrypt_kernel(struct boot_params *bp) { unsigned long workarea_start, workarea_end, workarea_len; unsigned long execute_start, execute_end, execute_len; @@ -299,8 +297,7 @@ void __head sme_encrypt_kernel(struct boot_params *bp) * instrumentation or checking boot_cpu_data in the cc_platform_has() * function. */ - if (!sme_get_me_mask() || - RIP_REL_REF(sev_status) & MSR_AMD64_SEV_ENABLED) + if (!sme_get_me_mask() || sev_status & MSR_AMD64_SEV_ENABLED) return; /* @@ -318,8 +315,8 @@ void __head sme_encrypt_kernel(struct boot_params *bp) * memory from being cached. */ - kernel_start = (unsigned long)RIP_REL_REF(_text); - kernel_end = ALIGN((unsigned long)RIP_REL_REF(_end), PMD_SIZE); + kernel_start = (unsigned long)_text; + kernel_end = ALIGN((unsigned long)_end, PMD_SIZE); kernel_len = kernel_end - kernel_start; initrd_start = 0; @@ -345,7 +342,7 @@ void __head sme_encrypt_kernel(struct boot_params *bp) * pagetable structures for the encryption of the kernel * pagetable structures for workarea (in case not currently mapped) */ - execute_start = workarea_start = (unsigned long)RIP_REL_REF(sme_workarea); + execute_start = workarea_start = (unsigned long)sme_workarea; execute_end = execute_start + (PAGE_SIZE * 2) + PMD_SIZE; execute_len = execute_end - execute_start; @@ -488,7 +485,7 @@ void __head sme_encrypt_kernel(struct boot_params *bp) native_write_cr3(__native_read_cr3()); } -void __head sme_enable(struct boot_params *bp) +void __init sme_enable(struct boot_params *bp) { unsigned int eax, ebx, ecx, edx; unsigned long feature_mask; @@ -526,7 +523,7 @@ void __head sme_enable(struct boot_params *bp) me_mask = 1UL << (ebx & 0x3f); /* Check the SEV MSR whether SEV or SME is enabled */ - RIP_REL_REF(sev_status) = msr = __rdmsr(MSR_AMD64_SEV); + sev_status = msr = __rdmsr(MSR_AMD64_SEV); feature_mask = (msr & MSR_AMD64_SEV_ENABLED) ? AMD_SEV_BIT : AMD_SME_BIT; /* @@ -562,8 +559,8 @@ void __head sme_enable(struct boot_params *bp) return; } - RIP_REL_REF(sme_me_mask) = me_mask; - RIP_REL_REF(physical_mask) &= ~me_mask; - RIP_REL_REF(cc_vendor) = CC_VENDOR_AMD; + sme_me_mask = me_mask; + physical_mask &= ~me_mask; + cc_vendor = CC_VENDOR_AMD; cc_set_mask(me_mask); } diff --git a/arch/x86/include/asm/mem_encrypt.h b/arch/x86/include/asm/mem_encrypt.h index 1530ee301dfe..ea6494628cb0 100644 --- a/arch/x86/include/asm/mem_encrypt.h +++ b/arch/x86/include/asm/mem_encrypt.h @@ -61,7 +61,7 @@ void __init sev_es_init_vc_handling(void); static inline u64 sme_get_me_mask(void) { - return RIP_REL_REF(sme_me_mask); + return sme_me_mask; } #define __bss_decrypted __section(".bss..decrypted") diff --git a/arch/x86/mm/Makefile b/arch/x86/mm/Makefile index 690fbf48e853..9cbb18c99adb 100644 --- a/arch/x86/mm/Makefile +++ b/arch/x86/mm/Makefile @@ -3,12 +3,10 @@ KCOV_INSTRUMENT_tlb.o := n KCOV_INSTRUMENT_mem_encrypt.o := n KCOV_INSTRUMENT_mem_encrypt_amd.o := n -KCOV_INSTRUMENT_mem_encrypt_identity.o := n KCOV_INSTRUMENT_pgprot.o := n KASAN_SANITIZE_mem_encrypt.o := n KASAN_SANITIZE_mem_encrypt_amd.o := n -KASAN_SANITIZE_mem_encrypt_identity.o := n KASAN_SANITIZE_pgprot.o := n # Disable KCSAN entirely, because otherwise we get warnings that some functions @@ -16,12 +14,10 @@ KASAN_SANITIZE_pgprot.o := n KCSAN_SANITIZE := n # Avoid recursion by not calling KMSAN hooks for CEA code. KMSAN_SANITIZE_cpu_entry_area.o := n -KMSAN_SANITIZE_mem_encrypt_identity.o := n ifdef CONFIG_FUNCTION_TRACER CFLAGS_REMOVE_mem_encrypt.o = -pg CFLAGS_REMOVE_mem_encrypt_amd.o = -pg -CFLAGS_REMOVE_mem_encrypt_identity.o = -pg CFLAGS_REMOVE_pgprot.o = -pg endif @@ -32,7 +28,6 @@ obj-y += pat/ # Make sure __phys_addr has no stackprotector CFLAGS_physaddr.o := -fno-stack-protector -CFLAGS_mem_encrypt_identity.o := -fno-stack-protector CFLAGS_fault.o := -I $(src)/../include/asm/trace @@ -65,5 +60,4 @@ obj-$(CONFIG_MITIGATION_PAGE_TABLE_ISOLATION) += pti.o obj-$(CONFIG_X86_MEM_ENCRYPT) += mem_encrypt.o obj-$(CONFIG_AMD_MEM_ENCRYPT) += mem_encrypt_amd.o -obj-$(CONFIG_AMD_MEM_ENCRYPT) += mem_encrypt_identity.o obj-$(CONFIG_AMD_MEM_ENCRYPT) += mem_encrypt_boot.o -- 2.49.0.472.ge94155a9ec-goog ^ permalink raw reply related [flat|nested] 20+ messages in thread
* [tip: x86/boot] x86/boot: Move the early SME init code into startup/ 2025-04-01 13:34 ` [RFC PATCH 6/6] x86/boot: Move early SME init " Ard Biesheuvel @ 2025-04-06 18:32 ` tip-bot2 for Ard Biesheuvel 0 siblings, 0 replies; 20+ messages in thread From: tip-bot2 for Ard Biesheuvel @ 2025-04-06 18:32 UTC (permalink / raw) To: linux-tip-commits Cc: Ard Biesheuvel, Ingo Molnar, David Woodhouse, H. Peter Anvin, Kees Cook, Linus Torvalds, x86, linux-kernel The following commit has been merged into the x86/boot branch of tip: Commit-ID: 11e1687bec8008d7d11a876dc0a7764eb4560edc Gitweb: https://git.kernel.org/tip/11e1687bec8008d7d11a876dc0a7764eb4560edc Author: Ard Biesheuvel <ardb@kernel.org> AuthorDate: Tue, 01 Apr 2025 15:34:23 +02:00 Committer: Ingo Molnar <mingo@kernel.org> CommitterDate: Sun, 06 Apr 2025 20:15:15 +02:00 x86/boot: Move the early SME init code into startup/ Move the SME initialization code, which runs from the 1:1 mapping of memory as it operates on the kernel virtual mapping, into the new sub-directory arch/x86/boot/startup/ where all startup code will reside that needs to tolerate executing from the 1:1 mapping. This allows RIP_REL_REF() macro invocations and __head annotations to be dropped. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: David Woodhouse <dwmw@amazon.co.uk> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Kees Cook <keescook@chromium.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/20250401133416.1436741-14-ardb+git@google.com --- arch/x86/boot/startup/Makefile | 1 +- arch/x86/boot/startup/sme.c | 566 ++++++++++++++++++++++++++++- arch/x86/include/asm/mem_encrypt.h | 2 +- arch/x86/mm/Makefile | 6 +- arch/x86/mm/mem_encrypt_identity.c | 569 +---------------------------- 5 files changed, 568 insertions(+), 576 deletions(-) create mode 100644 arch/x86/boot/startup/sme.c delete mode 100644 arch/x86/mm/mem_encrypt_identity.c diff --git a/arch/x86/boot/startup/Makefile b/arch/x86/boot/startup/Makefile index 0142306..480c2d2 100644 --- a/arch/x86/boot/startup/Makefile +++ b/arch/x86/boot/startup/Makefile @@ -16,6 +16,7 @@ UBSAN_SANITIZE := n KCOV_INSTRUMENT := n obj-$(CONFIG_X86_64) += gdt_idt.o map_kernel.o +obj-$(CONFIG_AMD_MEM_ENCRYPT) += sme.o lib-$(CONFIG_X86_64) += la57toggle.o lib-$(CONFIG_EFI_MIXED) += efi-mixed.o diff --git a/arch/x86/boot/startup/sme.c b/arch/x86/boot/startup/sme.c new file mode 100644 index 0000000..85bd396 --- /dev/null +++ b/arch/x86/boot/startup/sme.c @@ -0,0 +1,566 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * AMD Memory Encryption Support + * + * Copyright (C) 2016 Advanced Micro Devices, Inc. + * + * Author: Tom Lendacky <thomas.lendacky@amd.com> + */ + +/* + * Since we're dealing with identity mappings, physical and virtual + * addresses are the same, so override these defines which are ultimately + * used by the headers in misc.h. + */ +#define __pa(x) ((unsigned long)(x)) +#define __va(x) ((void *)((unsigned long)(x))) + +/* + * Special hack: we have to be careful, because no indirections are + * allowed here, and paravirt_ops is a kind of one. As it will only run in + * baremetal anyway, we just keep it from happening. (This list needs to + * be extended when new paravirt and debugging variants are added.) + */ +#undef CONFIG_PARAVIRT +#undef CONFIG_PARAVIRT_XXL +#undef CONFIG_PARAVIRT_SPINLOCKS + +/* + * This code runs before CPU feature bits are set. By default, the + * pgtable_l5_enabled() function uses bit X86_FEATURE_LA57 to determine if + * 5-level paging is active, so that won't work here. USE_EARLY_PGTABLE_L5 + * is provided to handle this situation and, instead, use a variable that + * has been set by the early boot code. + */ +#define USE_EARLY_PGTABLE_L5 + +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/mem_encrypt.h> +#include <linux/cc_platform.h> + +#include <asm/init.h> +#include <asm/setup.h> +#include <asm/sections.h> +#include <asm/coco.h> +#include <asm/sev.h> + +#define PGD_FLAGS _KERNPG_TABLE_NOENC +#define P4D_FLAGS _KERNPG_TABLE_NOENC +#define PUD_FLAGS _KERNPG_TABLE_NOENC +#define PMD_FLAGS _KERNPG_TABLE_NOENC + +#define PMD_FLAGS_LARGE (__PAGE_KERNEL_LARGE_EXEC & ~_PAGE_GLOBAL) + +#define PMD_FLAGS_DEC PMD_FLAGS_LARGE +#define PMD_FLAGS_DEC_WP ((PMD_FLAGS_DEC & ~_PAGE_LARGE_CACHE_MASK) | \ + (_PAGE_PAT_LARGE | _PAGE_PWT)) + +#define PMD_FLAGS_ENC (PMD_FLAGS_LARGE | _PAGE_ENC) + +#define PTE_FLAGS (__PAGE_KERNEL_EXEC & ~_PAGE_GLOBAL) + +#define PTE_FLAGS_DEC PTE_FLAGS +#define PTE_FLAGS_DEC_WP ((PTE_FLAGS_DEC & ~_PAGE_CACHE_MASK) | \ + (_PAGE_PAT | _PAGE_PWT)) + +#define PTE_FLAGS_ENC (PTE_FLAGS | _PAGE_ENC) + +struct sme_populate_pgd_data { + void *pgtable_area; + pgd_t *pgd; + + pmdval_t pmd_flags; + pteval_t pte_flags; + unsigned long paddr; + + unsigned long vaddr; + unsigned long vaddr_end; +}; + +/* + * This work area lives in the .init.scratch section, which lives outside of + * the kernel proper. It is sized to hold the intermediate copy buffer and + * more than enough pagetable pages. + * + * By using this section, the kernel can be encrypted in place and it + * avoids any possibility of boot parameters or initramfs images being + * placed such that the in-place encryption logic overwrites them. This + * section is 2MB aligned to allow for simple pagetable setup using only + * PMD entries (see vmlinux.lds.S). + */ +static char sme_workarea[2 * PMD_SIZE] __section(".init.scratch"); + +static void __init sme_clear_pgd(struct sme_populate_pgd_data *ppd) +{ + unsigned long pgd_start, pgd_end, pgd_size; + pgd_t *pgd_p; + + pgd_start = ppd->vaddr & PGDIR_MASK; + pgd_end = ppd->vaddr_end & PGDIR_MASK; + + pgd_size = (((pgd_end - pgd_start) / PGDIR_SIZE) + 1) * sizeof(pgd_t); + + pgd_p = ppd->pgd + pgd_index(ppd->vaddr); + + memset(pgd_p, 0, pgd_size); +} + +static pud_t __init *sme_prepare_pgd(struct sme_populate_pgd_data *ppd) +{ + pgd_t *pgd; + p4d_t *p4d; + pud_t *pud; + pmd_t *pmd; + + pgd = ppd->pgd + pgd_index(ppd->vaddr); + if (pgd_none(*pgd)) { + p4d = ppd->pgtable_area; + memset(p4d, 0, sizeof(*p4d) * PTRS_PER_P4D); + ppd->pgtable_area += sizeof(*p4d) * PTRS_PER_P4D; + set_pgd(pgd, __pgd(PGD_FLAGS | __pa(p4d))); + } + + p4d = p4d_offset(pgd, ppd->vaddr); + if (p4d_none(*p4d)) { + pud = ppd->pgtable_area; + memset(pud, 0, sizeof(*pud) * PTRS_PER_PUD); + ppd->pgtable_area += sizeof(*pud) * PTRS_PER_PUD; + set_p4d(p4d, __p4d(P4D_FLAGS | __pa(pud))); + } + + pud = pud_offset(p4d, ppd->vaddr); + if (pud_none(*pud)) { + pmd = ppd->pgtable_area; + memset(pmd, 0, sizeof(*pmd) * PTRS_PER_PMD); + ppd->pgtable_area += sizeof(*pmd) * PTRS_PER_PMD; + set_pud(pud, __pud(PUD_FLAGS | __pa(pmd))); + } + + if (pud_leaf(*pud)) + return NULL; + + return pud; +} + +static void __init sme_populate_pgd_large(struct sme_populate_pgd_data *ppd) +{ + pud_t *pud; + pmd_t *pmd; + + pud = sme_prepare_pgd(ppd); + if (!pud) + return; + + pmd = pmd_offset(pud, ppd->vaddr); + if (pmd_leaf(*pmd)) + return; + + set_pmd(pmd, __pmd(ppd->paddr | ppd->pmd_flags)); +} + +static void __init sme_populate_pgd(struct sme_populate_pgd_data *ppd) +{ + pud_t *pud; + pmd_t *pmd; + pte_t *pte; + + pud = sme_prepare_pgd(ppd); + if (!pud) + return; + + pmd = pmd_offset(pud, ppd->vaddr); + if (pmd_none(*pmd)) { + pte = ppd->pgtable_area; + memset(pte, 0, sizeof(*pte) * PTRS_PER_PTE); + ppd->pgtable_area += sizeof(*pte) * PTRS_PER_PTE; + set_pmd(pmd, __pmd(PMD_FLAGS | __pa(pte))); + } + + if (pmd_leaf(*pmd)) + return; + + pte = pte_offset_kernel(pmd, ppd->vaddr); + if (pte_none(*pte)) + set_pte(pte, __pte(ppd->paddr | ppd->pte_flags)); +} + +static void __init __sme_map_range_pmd(struct sme_populate_pgd_data *ppd) +{ + while (ppd->vaddr < ppd->vaddr_end) { + sme_populate_pgd_large(ppd); + + ppd->vaddr += PMD_SIZE; + ppd->paddr += PMD_SIZE; + } +} + +static void __init __sme_map_range_pte(struct sme_populate_pgd_data *ppd) +{ + while (ppd->vaddr < ppd->vaddr_end) { + sme_populate_pgd(ppd); + + ppd->vaddr += PAGE_SIZE; + ppd->paddr += PAGE_SIZE; + } +} + +static void __init __sme_map_range(struct sme_populate_pgd_data *ppd, + pmdval_t pmd_flags, pteval_t pte_flags) +{ + unsigned long vaddr_end; + + ppd->pmd_flags = pmd_flags; + ppd->pte_flags = pte_flags; + + /* Save original end value since we modify the struct value */ + vaddr_end = ppd->vaddr_end; + + /* If start is not 2MB aligned, create PTE entries */ + ppd->vaddr_end = ALIGN(ppd->vaddr, PMD_SIZE); + __sme_map_range_pte(ppd); + + /* Create PMD entries */ + ppd->vaddr_end = vaddr_end & PMD_MASK; + __sme_map_range_pmd(ppd); + + /* If end is not 2MB aligned, create PTE entries */ + ppd->vaddr_end = vaddr_end; + __sme_map_range_pte(ppd); +} + +static void __init sme_map_range_encrypted(struct sme_populate_pgd_data *ppd) +{ + __sme_map_range(ppd, PMD_FLAGS_ENC, PTE_FLAGS_ENC); +} + +static void __init sme_map_range_decrypted(struct sme_populate_pgd_data *ppd) +{ + __sme_map_range(ppd, PMD_FLAGS_DEC, PTE_FLAGS_DEC); +} + +static void __init sme_map_range_decrypted_wp(struct sme_populate_pgd_data *ppd) +{ + __sme_map_range(ppd, PMD_FLAGS_DEC_WP, PTE_FLAGS_DEC_WP); +} + +static unsigned long __init sme_pgtable_calc(unsigned long len) +{ + unsigned long entries = 0, tables = 0; + + /* + * Perform a relatively simplistic calculation of the pagetable + * entries that are needed. Those mappings will be covered mostly + * by 2MB PMD entries so we can conservatively calculate the required + * number of P4D, PUD and PMD structures needed to perform the + * mappings. For mappings that are not 2MB aligned, PTE mappings + * would be needed for the start and end portion of the address range + * that fall outside of the 2MB alignment. This results in, at most, + * two extra pages to hold PTE entries for each range that is mapped. + * Incrementing the count for each covers the case where the addresses + * cross entries. + */ + + /* PGDIR_SIZE is equal to P4D_SIZE on 4-level machine. */ + if (PTRS_PER_P4D > 1) + entries += (DIV_ROUND_UP(len, PGDIR_SIZE) + 1) * sizeof(p4d_t) * PTRS_PER_P4D; + entries += (DIV_ROUND_UP(len, P4D_SIZE) + 1) * sizeof(pud_t) * PTRS_PER_PUD; + entries += (DIV_ROUND_UP(len, PUD_SIZE) + 1) * sizeof(pmd_t) * PTRS_PER_PMD; + entries += 2 * sizeof(pte_t) * PTRS_PER_PTE; + + /* + * Now calculate the added pagetable structures needed to populate + * the new pagetables. + */ + + if (PTRS_PER_P4D > 1) + tables += DIV_ROUND_UP(entries, PGDIR_SIZE) * sizeof(p4d_t) * PTRS_PER_P4D; + tables += DIV_ROUND_UP(entries, P4D_SIZE) * sizeof(pud_t) * PTRS_PER_PUD; + tables += DIV_ROUND_UP(entries, PUD_SIZE) * sizeof(pmd_t) * PTRS_PER_PMD; + + return entries + tables; +} + +void __init sme_encrypt_kernel(struct boot_params *bp) +{ + unsigned long workarea_start, workarea_end, workarea_len; + unsigned long execute_start, execute_end, execute_len; + unsigned long kernel_start, kernel_end, kernel_len; + unsigned long initrd_start, initrd_end, initrd_len; + struct sme_populate_pgd_data ppd; + unsigned long pgtable_area_len; + unsigned long decrypted_base; + + /* + * This is early code, use an open coded check for SME instead of + * using cc_platform_has(). This eliminates worries about removing + * instrumentation or checking boot_cpu_data in the cc_platform_has() + * function. + */ + if (!sme_get_me_mask() || sev_status & MSR_AMD64_SEV_ENABLED) + return; + + /* + * Prepare for encrypting the kernel and initrd by building new + * pagetables with the necessary attributes needed to encrypt the + * kernel in place. + * + * One range of virtual addresses will map the memory occupied + * by the kernel and initrd as encrypted. + * + * Another range of virtual addresses will map the memory occupied + * by the kernel and initrd as decrypted and write-protected. + * + * The use of write-protect attribute will prevent any of the + * memory from being cached. + */ + + kernel_start = (unsigned long)_text; + kernel_end = ALIGN((unsigned long)_end, PMD_SIZE); + kernel_len = kernel_end - kernel_start; + + initrd_start = 0; + initrd_end = 0; + initrd_len = 0; +#ifdef CONFIG_BLK_DEV_INITRD + initrd_len = (unsigned long)bp->hdr.ramdisk_size | + ((unsigned long)bp->ext_ramdisk_size << 32); + if (initrd_len) { + initrd_start = (unsigned long)bp->hdr.ramdisk_image | + ((unsigned long)bp->ext_ramdisk_image << 32); + initrd_end = PAGE_ALIGN(initrd_start + initrd_len); + initrd_len = initrd_end - initrd_start; + } +#endif + + /* + * Calculate required number of workarea bytes needed: + * executable encryption area size: + * stack page (PAGE_SIZE) + * encryption routine page (PAGE_SIZE) + * intermediate copy buffer (PMD_SIZE) + * pagetable structures for the encryption of the kernel + * pagetable structures for workarea (in case not currently mapped) + */ + execute_start = workarea_start = (unsigned long)sme_workarea; + execute_end = execute_start + (PAGE_SIZE * 2) + PMD_SIZE; + execute_len = execute_end - execute_start; + + /* + * One PGD for both encrypted and decrypted mappings and a set of + * PUDs and PMDs for each of the encrypted and decrypted mappings. + */ + pgtable_area_len = sizeof(pgd_t) * PTRS_PER_PGD; + pgtable_area_len += sme_pgtable_calc(execute_end - kernel_start) * 2; + if (initrd_len) + pgtable_area_len += sme_pgtable_calc(initrd_len) * 2; + + /* PUDs and PMDs needed in the current pagetables for the workarea */ + pgtable_area_len += sme_pgtable_calc(execute_len + pgtable_area_len); + + /* + * The total workarea includes the executable encryption area and + * the pagetable area. The start of the workarea is already 2MB + * aligned, align the end of the workarea on a 2MB boundary so that + * we don't try to create/allocate PTE entries from the workarea + * before it is mapped. + */ + workarea_len = execute_len + pgtable_area_len; + workarea_end = ALIGN(workarea_start + workarea_len, PMD_SIZE); + + /* + * Set the address to the start of where newly created pagetable + * structures (PGDs, PUDs and PMDs) will be allocated. New pagetable + * structures are created when the workarea is added to the current + * pagetables and when the new encrypted and decrypted kernel + * mappings are populated. + */ + ppd.pgtable_area = (void *)execute_end; + + /* + * Make sure the current pagetable structure has entries for + * addressing the workarea. + */ + ppd.pgd = (pgd_t *)native_read_cr3_pa(); + ppd.paddr = workarea_start; + ppd.vaddr = workarea_start; + ppd.vaddr_end = workarea_end; + sme_map_range_decrypted(&ppd); + + /* Flush the TLB - no globals so cr3 is enough */ + native_write_cr3(__native_read_cr3()); + + /* + * A new pagetable structure is being built to allow for the kernel + * and initrd to be encrypted. It starts with an empty PGD that will + * then be populated with new PUDs and PMDs as the encrypted and + * decrypted kernel mappings are created. + */ + ppd.pgd = ppd.pgtable_area; + memset(ppd.pgd, 0, sizeof(pgd_t) * PTRS_PER_PGD); + ppd.pgtable_area += sizeof(pgd_t) * PTRS_PER_PGD; + + /* + * A different PGD index/entry must be used to get different + * pagetable entries for the decrypted mapping. Choose the next + * PGD index and convert it to a virtual address to be used as + * the base of the mapping. + */ + decrypted_base = (pgd_index(workarea_end) + 1) & (PTRS_PER_PGD - 1); + if (initrd_len) { + unsigned long check_base; + + check_base = (pgd_index(initrd_end) + 1) & (PTRS_PER_PGD - 1); + decrypted_base = max(decrypted_base, check_base); + } + decrypted_base <<= PGDIR_SHIFT; + + /* Add encrypted kernel (identity) mappings */ + ppd.paddr = kernel_start; + ppd.vaddr = kernel_start; + ppd.vaddr_end = kernel_end; + sme_map_range_encrypted(&ppd); + + /* Add decrypted, write-protected kernel (non-identity) mappings */ + ppd.paddr = kernel_start; + ppd.vaddr = kernel_start + decrypted_base; + ppd.vaddr_end = kernel_end + decrypted_base; + sme_map_range_decrypted_wp(&ppd); + + if (initrd_len) { + /* Add encrypted initrd (identity) mappings */ + ppd.paddr = initrd_start; + ppd.vaddr = initrd_start; + ppd.vaddr_end = initrd_end; + sme_map_range_encrypted(&ppd); + /* + * Add decrypted, write-protected initrd (non-identity) mappings + */ + ppd.paddr = initrd_start; + ppd.vaddr = initrd_start + decrypted_base; + ppd.vaddr_end = initrd_end + decrypted_base; + sme_map_range_decrypted_wp(&ppd); + } + + /* Add decrypted workarea mappings to both kernel mappings */ + ppd.paddr = workarea_start; + ppd.vaddr = workarea_start; + ppd.vaddr_end = workarea_end; + sme_map_range_decrypted(&ppd); + + ppd.paddr = workarea_start; + ppd.vaddr = workarea_start + decrypted_base; + ppd.vaddr_end = workarea_end + decrypted_base; + sme_map_range_decrypted(&ppd); + + /* Perform the encryption */ + sme_encrypt_execute(kernel_start, kernel_start + decrypted_base, + kernel_len, workarea_start, (unsigned long)ppd.pgd); + + if (initrd_len) + sme_encrypt_execute(initrd_start, initrd_start + decrypted_base, + initrd_len, workarea_start, + (unsigned long)ppd.pgd); + + /* + * At this point we are running encrypted. Remove the mappings for + * the decrypted areas - all that is needed for this is to remove + * the PGD entry/entries. + */ + ppd.vaddr = kernel_start + decrypted_base; + ppd.vaddr_end = kernel_end + decrypted_base; + sme_clear_pgd(&ppd); + + if (initrd_len) { + ppd.vaddr = initrd_start + decrypted_base; + ppd.vaddr_end = initrd_end + decrypted_base; + sme_clear_pgd(&ppd); + } + + ppd.vaddr = workarea_start + decrypted_base; + ppd.vaddr_end = workarea_end + decrypted_base; + sme_clear_pgd(&ppd); + + /* Flush the TLB - no globals so cr3 is enough */ + native_write_cr3(__native_read_cr3()); +} + +void __init sme_enable(struct boot_params *bp) +{ + unsigned int eax, ebx, ecx, edx; + unsigned long feature_mask; + unsigned long me_mask; + bool snp_en; + u64 msr; + + snp_en = snp_init(bp); + + /* Check for the SME/SEV support leaf */ + eax = 0x80000000; + ecx = 0; + native_cpuid(&eax, &ebx, &ecx, &edx); + if (eax < 0x8000001f) + return; + +#define AMD_SME_BIT BIT(0) +#define AMD_SEV_BIT BIT(1) + + /* + * Check for the SME/SEV feature: + * CPUID Fn8000_001F[EAX] + * - Bit 0 - Secure Memory Encryption support + * - Bit 1 - Secure Encrypted Virtualization support + * CPUID Fn8000_001F[EBX] + * - Bits 5:0 - Pagetable bit position used to indicate encryption + */ + eax = 0x8000001f; + ecx = 0; + native_cpuid(&eax, &ebx, &ecx, &edx); + /* Check whether SEV or SME is supported */ + if (!(eax & (AMD_SEV_BIT | AMD_SME_BIT))) + return; + + me_mask = 1UL << (ebx & 0x3f); + + /* Check the SEV MSR whether SEV or SME is enabled */ + sev_status = msr = __rdmsr(MSR_AMD64_SEV); + feature_mask = (msr & MSR_AMD64_SEV_ENABLED) ? AMD_SEV_BIT : AMD_SME_BIT; + + /* + * Any discrepancies between the presence of a CC blob and SNP + * enablement abort the guest. + */ + if (snp_en ^ !!(msr & MSR_AMD64_SEV_SNP_ENABLED)) + snp_abort(); + + /* Check if memory encryption is enabled */ + if (feature_mask == AMD_SME_BIT) { + if (!(bp->hdr.xloadflags & XLF_MEM_ENCRYPTION)) + return; + + /* + * No SME if Hypervisor bit is set. This check is here to + * prevent a guest from trying to enable SME. For running as a + * KVM guest the MSR_AMD64_SYSCFG will be sufficient, but there + * might be other hypervisors which emulate that MSR as non-zero + * or even pass it through to the guest. + * A malicious hypervisor can still trick a guest into this + * path, but there is no way to protect against that. + */ + eax = 1; + ecx = 0; + native_cpuid(&eax, &ebx, &ecx, &edx); + if (ecx & BIT(31)) + return; + + /* For SME, check the SYSCFG MSR */ + msr = __rdmsr(MSR_AMD64_SYSCFG); + if (!(msr & MSR_AMD64_SYSCFG_MEM_ENCRYPT)) + return; + } + + sme_me_mask = me_mask; + physical_mask &= ~me_mask; + cc_vendor = CC_VENDOR_AMD; + cc_set_mask(me_mask); +} diff --git a/arch/x86/include/asm/mem_encrypt.h b/arch/x86/include/asm/mem_encrypt.h index 1530ee3..ea64946 100644 --- a/arch/x86/include/asm/mem_encrypt.h +++ b/arch/x86/include/asm/mem_encrypt.h @@ -61,7 +61,7 @@ void __init sev_es_init_vc_handling(void); static inline u64 sme_get_me_mask(void) { - return RIP_REL_REF(sme_me_mask); + return sme_me_mask; } #define __bss_decrypted __section(".bss..decrypted") diff --git a/arch/x86/mm/Makefile b/arch/x86/mm/Makefile index 32035d5..3faa60f 100644 --- a/arch/x86/mm/Makefile +++ b/arch/x86/mm/Makefile @@ -3,12 +3,10 @@ KCOV_INSTRUMENT_tlb.o := n KCOV_INSTRUMENT_mem_encrypt.o := n KCOV_INSTRUMENT_mem_encrypt_amd.o := n -KCOV_INSTRUMENT_mem_encrypt_identity.o := n KCOV_INSTRUMENT_pgprot.o := n KASAN_SANITIZE_mem_encrypt.o := n KASAN_SANITIZE_mem_encrypt_amd.o := n -KASAN_SANITIZE_mem_encrypt_identity.o := n KASAN_SANITIZE_pgprot.o := n # Disable KCSAN entirely, because otherwise we get warnings that some functions @@ -16,12 +14,10 @@ KASAN_SANITIZE_pgprot.o := n KCSAN_SANITIZE := n # Avoid recursion by not calling KMSAN hooks for CEA code. KMSAN_SANITIZE_cpu_entry_area.o := n -KMSAN_SANITIZE_mem_encrypt_identity.o := n ifdef CONFIG_FUNCTION_TRACER CFLAGS_REMOVE_mem_encrypt.o = -pg CFLAGS_REMOVE_mem_encrypt_amd.o = -pg -CFLAGS_REMOVE_mem_encrypt_identity.o = -pg CFLAGS_REMOVE_pgprot.o = -pg endif @@ -32,7 +28,6 @@ obj-y += pat/ # Make sure __phys_addr has no stackprotector CFLAGS_physaddr.o := -fno-stack-protector -CFLAGS_mem_encrypt_identity.o := -fno-stack-protector CFLAGS_fault.o := -I $(src)/../include/asm/trace @@ -63,5 +58,4 @@ obj-$(CONFIG_MITIGATION_PAGE_TABLE_ISOLATION) += pti.o obj-$(CONFIG_X86_MEM_ENCRYPT) += mem_encrypt.o obj-$(CONFIG_AMD_MEM_ENCRYPT) += mem_encrypt_amd.o -obj-$(CONFIG_AMD_MEM_ENCRYPT) += mem_encrypt_identity.o obj-$(CONFIG_AMD_MEM_ENCRYPT) += mem_encrypt_boot.o diff --git a/arch/x86/mm/mem_encrypt_identity.c b/arch/x86/mm/mem_encrypt_identity.c deleted file mode 100644 index 5eecdd9..0000000 --- a/arch/x86/mm/mem_encrypt_identity.c +++ /dev/null @@ -1,569 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * AMD Memory Encryption Support - * - * Copyright (C) 2016 Advanced Micro Devices, Inc. - * - * Author: Tom Lendacky <thomas.lendacky@amd.com> - */ - -/* - * Since we're dealing with identity mappings, physical and virtual - * addresses are the same, so override these defines which are ultimately - * used by the headers in misc.h. - */ -#define __pa(x) ((unsigned long)(x)) -#define __va(x) ((void *)((unsigned long)(x))) - -/* - * Special hack: we have to be careful, because no indirections are - * allowed here, and paravirt_ops is a kind of one. As it will only run in - * baremetal anyway, we just keep it from happening. (This list needs to - * be extended when new paravirt and debugging variants are added.) - */ -#undef CONFIG_PARAVIRT -#undef CONFIG_PARAVIRT_XXL -#undef CONFIG_PARAVIRT_SPINLOCKS - -/* - * This code runs before CPU feature bits are set. By default, the - * pgtable_l5_enabled() function uses bit X86_FEATURE_LA57 to determine if - * 5-level paging is active, so that won't work here. USE_EARLY_PGTABLE_L5 - * is provided to handle this situation and, instead, use a variable that - * has been set by the early boot code. - */ -#define USE_EARLY_PGTABLE_L5 - -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/mem_encrypt.h> -#include <linux/cc_platform.h> - -#include <asm/init.h> -#include <asm/setup.h> -#include <asm/sections.h> -#include <asm/coco.h> -#include <asm/sev.h> - -#include "mm_internal.h" - -#define PGD_FLAGS _KERNPG_TABLE_NOENC -#define P4D_FLAGS _KERNPG_TABLE_NOENC -#define PUD_FLAGS _KERNPG_TABLE_NOENC -#define PMD_FLAGS _KERNPG_TABLE_NOENC - -#define PMD_FLAGS_LARGE (__PAGE_KERNEL_LARGE_EXEC & ~_PAGE_GLOBAL) - -#define PMD_FLAGS_DEC PMD_FLAGS_LARGE -#define PMD_FLAGS_DEC_WP ((PMD_FLAGS_DEC & ~_PAGE_LARGE_CACHE_MASK) | \ - (_PAGE_PAT_LARGE | _PAGE_PWT)) - -#define PMD_FLAGS_ENC (PMD_FLAGS_LARGE | _PAGE_ENC) - -#define PTE_FLAGS (__PAGE_KERNEL_EXEC & ~_PAGE_GLOBAL) - -#define PTE_FLAGS_DEC PTE_FLAGS -#define PTE_FLAGS_DEC_WP ((PTE_FLAGS_DEC & ~_PAGE_CACHE_MASK) | \ - (_PAGE_PAT | _PAGE_PWT)) - -#define PTE_FLAGS_ENC (PTE_FLAGS | _PAGE_ENC) - -struct sme_populate_pgd_data { - void *pgtable_area; - pgd_t *pgd; - - pmdval_t pmd_flags; - pteval_t pte_flags; - unsigned long paddr; - - unsigned long vaddr; - unsigned long vaddr_end; -}; - -/* - * This work area lives in the .init.scratch section, which lives outside of - * the kernel proper. It is sized to hold the intermediate copy buffer and - * more than enough pagetable pages. - * - * By using this section, the kernel can be encrypted in place and it - * avoids any possibility of boot parameters or initramfs images being - * placed such that the in-place encryption logic overwrites them. This - * section is 2MB aligned to allow for simple pagetable setup using only - * PMD entries (see vmlinux.lds.S). - */ -static char sme_workarea[2 * PMD_SIZE] __section(".init.scratch"); - -static void __head sme_clear_pgd(struct sme_populate_pgd_data *ppd) -{ - unsigned long pgd_start, pgd_end, pgd_size; - pgd_t *pgd_p; - - pgd_start = ppd->vaddr & PGDIR_MASK; - pgd_end = ppd->vaddr_end & PGDIR_MASK; - - pgd_size = (((pgd_end - pgd_start) / PGDIR_SIZE) + 1) * sizeof(pgd_t); - - pgd_p = ppd->pgd + pgd_index(ppd->vaddr); - - memset(pgd_p, 0, pgd_size); -} - -static pud_t __head *sme_prepare_pgd(struct sme_populate_pgd_data *ppd) -{ - pgd_t *pgd; - p4d_t *p4d; - pud_t *pud; - pmd_t *pmd; - - pgd = ppd->pgd + pgd_index(ppd->vaddr); - if (pgd_none(*pgd)) { - p4d = ppd->pgtable_area; - memset(p4d, 0, sizeof(*p4d) * PTRS_PER_P4D); - ppd->pgtable_area += sizeof(*p4d) * PTRS_PER_P4D; - set_pgd(pgd, __pgd(PGD_FLAGS | __pa(p4d))); - } - - p4d = p4d_offset(pgd, ppd->vaddr); - if (p4d_none(*p4d)) { - pud = ppd->pgtable_area; - memset(pud, 0, sizeof(*pud) * PTRS_PER_PUD); - ppd->pgtable_area += sizeof(*pud) * PTRS_PER_PUD; - set_p4d(p4d, __p4d(P4D_FLAGS | __pa(pud))); - } - - pud = pud_offset(p4d, ppd->vaddr); - if (pud_none(*pud)) { - pmd = ppd->pgtable_area; - memset(pmd, 0, sizeof(*pmd) * PTRS_PER_PMD); - ppd->pgtable_area += sizeof(*pmd) * PTRS_PER_PMD; - set_pud(pud, __pud(PUD_FLAGS | __pa(pmd))); - } - - if (pud_leaf(*pud)) - return NULL; - - return pud; -} - -static void __head sme_populate_pgd_large(struct sme_populate_pgd_data *ppd) -{ - pud_t *pud; - pmd_t *pmd; - - pud = sme_prepare_pgd(ppd); - if (!pud) - return; - - pmd = pmd_offset(pud, ppd->vaddr); - if (pmd_leaf(*pmd)) - return; - - set_pmd(pmd, __pmd(ppd->paddr | ppd->pmd_flags)); -} - -static void __head sme_populate_pgd(struct sme_populate_pgd_data *ppd) -{ - pud_t *pud; - pmd_t *pmd; - pte_t *pte; - - pud = sme_prepare_pgd(ppd); - if (!pud) - return; - - pmd = pmd_offset(pud, ppd->vaddr); - if (pmd_none(*pmd)) { - pte = ppd->pgtable_area; - memset(pte, 0, sizeof(*pte) * PTRS_PER_PTE); - ppd->pgtable_area += sizeof(*pte) * PTRS_PER_PTE; - set_pmd(pmd, __pmd(PMD_FLAGS | __pa(pte))); - } - - if (pmd_leaf(*pmd)) - return; - - pte = pte_offset_kernel(pmd, ppd->vaddr); - if (pte_none(*pte)) - set_pte(pte, __pte(ppd->paddr | ppd->pte_flags)); -} - -static void __head __sme_map_range_pmd(struct sme_populate_pgd_data *ppd) -{ - while (ppd->vaddr < ppd->vaddr_end) { - sme_populate_pgd_large(ppd); - - ppd->vaddr += PMD_SIZE; - ppd->paddr += PMD_SIZE; - } -} - -static void __head __sme_map_range_pte(struct sme_populate_pgd_data *ppd) -{ - while (ppd->vaddr < ppd->vaddr_end) { - sme_populate_pgd(ppd); - - ppd->vaddr += PAGE_SIZE; - ppd->paddr += PAGE_SIZE; - } -} - -static void __head __sme_map_range(struct sme_populate_pgd_data *ppd, - pmdval_t pmd_flags, pteval_t pte_flags) -{ - unsigned long vaddr_end; - - ppd->pmd_flags = pmd_flags; - ppd->pte_flags = pte_flags; - - /* Save original end value since we modify the struct value */ - vaddr_end = ppd->vaddr_end; - - /* If start is not 2MB aligned, create PTE entries */ - ppd->vaddr_end = ALIGN(ppd->vaddr, PMD_SIZE); - __sme_map_range_pte(ppd); - - /* Create PMD entries */ - ppd->vaddr_end = vaddr_end & PMD_MASK; - __sme_map_range_pmd(ppd); - - /* If end is not 2MB aligned, create PTE entries */ - ppd->vaddr_end = vaddr_end; - __sme_map_range_pte(ppd); -} - -static void __head sme_map_range_encrypted(struct sme_populate_pgd_data *ppd) -{ - __sme_map_range(ppd, PMD_FLAGS_ENC, PTE_FLAGS_ENC); -} - -static void __head sme_map_range_decrypted(struct sme_populate_pgd_data *ppd) -{ - __sme_map_range(ppd, PMD_FLAGS_DEC, PTE_FLAGS_DEC); -} - -static void __head sme_map_range_decrypted_wp(struct sme_populate_pgd_data *ppd) -{ - __sme_map_range(ppd, PMD_FLAGS_DEC_WP, PTE_FLAGS_DEC_WP); -} - -static unsigned long __head sme_pgtable_calc(unsigned long len) -{ - unsigned long entries = 0, tables = 0; - - /* - * Perform a relatively simplistic calculation of the pagetable - * entries that are needed. Those mappings will be covered mostly - * by 2MB PMD entries so we can conservatively calculate the required - * number of P4D, PUD and PMD structures needed to perform the - * mappings. For mappings that are not 2MB aligned, PTE mappings - * would be needed for the start and end portion of the address range - * that fall outside of the 2MB alignment. This results in, at most, - * two extra pages to hold PTE entries for each range that is mapped. - * Incrementing the count for each covers the case where the addresses - * cross entries. - */ - - /* PGDIR_SIZE is equal to P4D_SIZE on 4-level machine. */ - if (PTRS_PER_P4D > 1) - entries += (DIV_ROUND_UP(len, PGDIR_SIZE) + 1) * sizeof(p4d_t) * PTRS_PER_P4D; - entries += (DIV_ROUND_UP(len, P4D_SIZE) + 1) * sizeof(pud_t) * PTRS_PER_PUD; - entries += (DIV_ROUND_UP(len, PUD_SIZE) + 1) * sizeof(pmd_t) * PTRS_PER_PMD; - entries += 2 * sizeof(pte_t) * PTRS_PER_PTE; - - /* - * Now calculate the added pagetable structures needed to populate - * the new pagetables. - */ - - if (PTRS_PER_P4D > 1) - tables += DIV_ROUND_UP(entries, PGDIR_SIZE) * sizeof(p4d_t) * PTRS_PER_P4D; - tables += DIV_ROUND_UP(entries, P4D_SIZE) * sizeof(pud_t) * PTRS_PER_PUD; - tables += DIV_ROUND_UP(entries, PUD_SIZE) * sizeof(pmd_t) * PTRS_PER_PMD; - - return entries + tables; -} - -void __head sme_encrypt_kernel(struct boot_params *bp) -{ - unsigned long workarea_start, workarea_end, workarea_len; - unsigned long execute_start, execute_end, execute_len; - unsigned long kernel_start, kernel_end, kernel_len; - unsigned long initrd_start, initrd_end, initrd_len; - struct sme_populate_pgd_data ppd; - unsigned long pgtable_area_len; - unsigned long decrypted_base; - - /* - * This is early code, use an open coded check for SME instead of - * using cc_platform_has(). This eliminates worries about removing - * instrumentation or checking boot_cpu_data in the cc_platform_has() - * function. - */ - if (!sme_get_me_mask() || - RIP_REL_REF(sev_status) & MSR_AMD64_SEV_ENABLED) - return; - - /* - * Prepare for encrypting the kernel and initrd by building new - * pagetables with the necessary attributes needed to encrypt the - * kernel in place. - * - * One range of virtual addresses will map the memory occupied - * by the kernel and initrd as encrypted. - * - * Another range of virtual addresses will map the memory occupied - * by the kernel and initrd as decrypted and write-protected. - * - * The use of write-protect attribute will prevent any of the - * memory from being cached. - */ - - kernel_start = (unsigned long)RIP_REL_REF(_text); - kernel_end = ALIGN((unsigned long)RIP_REL_REF(_end), PMD_SIZE); - kernel_len = kernel_end - kernel_start; - - initrd_start = 0; - initrd_end = 0; - initrd_len = 0; -#ifdef CONFIG_BLK_DEV_INITRD - initrd_len = (unsigned long)bp->hdr.ramdisk_size | - ((unsigned long)bp->ext_ramdisk_size << 32); - if (initrd_len) { - initrd_start = (unsigned long)bp->hdr.ramdisk_image | - ((unsigned long)bp->ext_ramdisk_image << 32); - initrd_end = PAGE_ALIGN(initrd_start + initrd_len); - initrd_len = initrd_end - initrd_start; - } -#endif - - /* - * Calculate required number of workarea bytes needed: - * executable encryption area size: - * stack page (PAGE_SIZE) - * encryption routine page (PAGE_SIZE) - * intermediate copy buffer (PMD_SIZE) - * pagetable structures for the encryption of the kernel - * pagetable structures for workarea (in case not currently mapped) - */ - execute_start = workarea_start = (unsigned long)RIP_REL_REF(sme_workarea); - execute_end = execute_start + (PAGE_SIZE * 2) + PMD_SIZE; - execute_len = execute_end - execute_start; - - /* - * One PGD for both encrypted and decrypted mappings and a set of - * PUDs and PMDs for each of the encrypted and decrypted mappings. - */ - pgtable_area_len = sizeof(pgd_t) * PTRS_PER_PGD; - pgtable_area_len += sme_pgtable_calc(execute_end - kernel_start) * 2; - if (initrd_len) - pgtable_area_len += sme_pgtable_calc(initrd_len) * 2; - - /* PUDs and PMDs needed in the current pagetables for the workarea */ - pgtable_area_len += sme_pgtable_calc(execute_len + pgtable_area_len); - - /* - * The total workarea includes the executable encryption area and - * the pagetable area. The start of the workarea is already 2MB - * aligned, align the end of the workarea on a 2MB boundary so that - * we don't try to create/allocate PTE entries from the workarea - * before it is mapped. - */ - workarea_len = execute_len + pgtable_area_len; - workarea_end = ALIGN(workarea_start + workarea_len, PMD_SIZE); - - /* - * Set the address to the start of where newly created pagetable - * structures (PGDs, PUDs and PMDs) will be allocated. New pagetable - * structures are created when the workarea is added to the current - * pagetables and when the new encrypted and decrypted kernel - * mappings are populated. - */ - ppd.pgtable_area = (void *)execute_end; - - /* - * Make sure the current pagetable structure has entries for - * addressing the workarea. - */ - ppd.pgd = (pgd_t *)native_read_cr3_pa(); - ppd.paddr = workarea_start; - ppd.vaddr = workarea_start; - ppd.vaddr_end = workarea_end; - sme_map_range_decrypted(&ppd); - - /* Flush the TLB - no globals so cr3 is enough */ - native_write_cr3(__native_read_cr3()); - - /* - * A new pagetable structure is being built to allow for the kernel - * and initrd to be encrypted. It starts with an empty PGD that will - * then be populated with new PUDs and PMDs as the encrypted and - * decrypted kernel mappings are created. - */ - ppd.pgd = ppd.pgtable_area; - memset(ppd.pgd, 0, sizeof(pgd_t) * PTRS_PER_PGD); - ppd.pgtable_area += sizeof(pgd_t) * PTRS_PER_PGD; - - /* - * A different PGD index/entry must be used to get different - * pagetable entries for the decrypted mapping. Choose the next - * PGD index and convert it to a virtual address to be used as - * the base of the mapping. - */ - decrypted_base = (pgd_index(workarea_end) + 1) & (PTRS_PER_PGD - 1); - if (initrd_len) { - unsigned long check_base; - - check_base = (pgd_index(initrd_end) + 1) & (PTRS_PER_PGD - 1); - decrypted_base = max(decrypted_base, check_base); - } - decrypted_base <<= PGDIR_SHIFT; - - /* Add encrypted kernel (identity) mappings */ - ppd.paddr = kernel_start; - ppd.vaddr = kernel_start; - ppd.vaddr_end = kernel_end; - sme_map_range_encrypted(&ppd); - - /* Add decrypted, write-protected kernel (non-identity) mappings */ - ppd.paddr = kernel_start; - ppd.vaddr = kernel_start + decrypted_base; - ppd.vaddr_end = kernel_end + decrypted_base; - sme_map_range_decrypted_wp(&ppd); - - if (initrd_len) { - /* Add encrypted initrd (identity) mappings */ - ppd.paddr = initrd_start; - ppd.vaddr = initrd_start; - ppd.vaddr_end = initrd_end; - sme_map_range_encrypted(&ppd); - /* - * Add decrypted, write-protected initrd (non-identity) mappings - */ - ppd.paddr = initrd_start; - ppd.vaddr = initrd_start + decrypted_base; - ppd.vaddr_end = initrd_end + decrypted_base; - sme_map_range_decrypted_wp(&ppd); - } - - /* Add decrypted workarea mappings to both kernel mappings */ - ppd.paddr = workarea_start; - ppd.vaddr = workarea_start; - ppd.vaddr_end = workarea_end; - sme_map_range_decrypted(&ppd); - - ppd.paddr = workarea_start; - ppd.vaddr = workarea_start + decrypted_base; - ppd.vaddr_end = workarea_end + decrypted_base; - sme_map_range_decrypted(&ppd); - - /* Perform the encryption */ - sme_encrypt_execute(kernel_start, kernel_start + decrypted_base, - kernel_len, workarea_start, (unsigned long)ppd.pgd); - - if (initrd_len) - sme_encrypt_execute(initrd_start, initrd_start + decrypted_base, - initrd_len, workarea_start, - (unsigned long)ppd.pgd); - - /* - * At this point we are running encrypted. Remove the mappings for - * the decrypted areas - all that is needed for this is to remove - * the PGD entry/entries. - */ - ppd.vaddr = kernel_start + decrypted_base; - ppd.vaddr_end = kernel_end + decrypted_base; - sme_clear_pgd(&ppd); - - if (initrd_len) { - ppd.vaddr = initrd_start + decrypted_base; - ppd.vaddr_end = initrd_end + decrypted_base; - sme_clear_pgd(&ppd); - } - - ppd.vaddr = workarea_start + decrypted_base; - ppd.vaddr_end = workarea_end + decrypted_base; - sme_clear_pgd(&ppd); - - /* Flush the TLB - no globals so cr3 is enough */ - native_write_cr3(__native_read_cr3()); -} - -void __head sme_enable(struct boot_params *bp) -{ - unsigned int eax, ebx, ecx, edx; - unsigned long feature_mask; - unsigned long me_mask; - bool snp_en; - u64 msr; - - snp_en = snp_init(bp); - - /* Check for the SME/SEV support leaf */ - eax = 0x80000000; - ecx = 0; - native_cpuid(&eax, &ebx, &ecx, &edx); - if (eax < 0x8000001f) - return; - -#define AMD_SME_BIT BIT(0) -#define AMD_SEV_BIT BIT(1) - - /* - * Check for the SME/SEV feature: - * CPUID Fn8000_001F[EAX] - * - Bit 0 - Secure Memory Encryption support - * - Bit 1 - Secure Encrypted Virtualization support - * CPUID Fn8000_001F[EBX] - * - Bits 5:0 - Pagetable bit position used to indicate encryption - */ - eax = 0x8000001f; - ecx = 0; - native_cpuid(&eax, &ebx, &ecx, &edx); - /* Check whether SEV or SME is supported */ - if (!(eax & (AMD_SEV_BIT | AMD_SME_BIT))) - return; - - me_mask = 1UL << (ebx & 0x3f); - - /* Check the SEV MSR whether SEV or SME is enabled */ - RIP_REL_REF(sev_status) = msr = __rdmsr(MSR_AMD64_SEV); - feature_mask = (msr & MSR_AMD64_SEV_ENABLED) ? AMD_SEV_BIT : AMD_SME_BIT; - - /* - * Any discrepancies between the presence of a CC blob and SNP - * enablement abort the guest. - */ - if (snp_en ^ !!(msr & MSR_AMD64_SEV_SNP_ENABLED)) - snp_abort(); - - /* Check if memory encryption is enabled */ - if (feature_mask == AMD_SME_BIT) { - if (!(bp->hdr.xloadflags & XLF_MEM_ENCRYPTION)) - return; - - /* - * No SME if Hypervisor bit is set. This check is here to - * prevent a guest from trying to enable SME. For running as a - * KVM guest the MSR_AMD64_SYSCFG will be sufficient, but there - * might be other hypervisors which emulate that MSR as non-zero - * or even pass it through to the guest. - * A malicious hypervisor can still trick a guest into this - * path, but there is no way to protect against that. - */ - eax = 1; - ecx = 0; - native_cpuid(&eax, &ebx, &ecx, &edx); - if (ecx & BIT(31)) - return; - - /* For SME, check the SYSCFG MSR */ - msr = __rdmsr(MSR_AMD64_SYSCFG); - if (!(msr & MSR_AMD64_SYSCFG_MEM_ENCRYPT)) - return; - } - - RIP_REL_REF(sme_me_mask) = me_mask; - RIP_REL_REF(physical_mask) &= ~me_mask; - RIP_REL_REF(cc_vendor) = CC_VENDOR_AMD; - cc_set_mask(me_mask); -} ^ permalink raw reply related [flat|nested] 20+ messages in thread
end of thread, other threads:[~2025-04-09 12:00 UTC | newest] Thread overview: 20+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2025-04-01 13:34 [RFC PATCH 0/6] x86: Refactor and consolidate startup code Ard Biesheuvel 2025-04-01 13:34 ` [RFC PATCH 1/6] x86/boot/compressed: Merge local pgtable.h include into asm/boot.h Ard Biesheuvel 2025-04-06 18:33 ` [tip: x86/boot] x86/boot/compressed: Merge the local pgtable.h include into <asm/boot.h> tip-bot2 for Ard Biesheuvel 2025-04-01 13:34 ` [RFC PATCH 2/6] x86/boot: Move 5-level paging trampoline into startup code Ard Biesheuvel 2025-04-06 18:33 ` [tip: x86/boot] x86/boot: Move the 5-level paging trampoline into /startup tip-bot2 for Ard Biesheuvel 2025-04-01 13:34 ` [RFC PATCH 3/6] x86/boot: Move EFI mixed mode startup code back under arch/x86 Ard Biesheuvel 2025-04-06 18:33 ` [tip: x86/boot] x86/boot: Move the EFI mixed mode startup code back under arch/x86, into startup/ tip-bot2 for Ard Biesheuvel 2025-04-07 7:38 ` Aithal, Srikanth 2025-04-07 8:30 ` Ard Biesheuvel 2025-04-07 9:41 ` Aithal, Srikanth 2025-04-09 11:54 ` Aithal, Srikanth 2025-04-09 12:00 ` Ingo Molnar 2025-04-01 13:34 ` [RFC PATCH 4/6] x86/boot: Move early GDT/IDT setup code " Ard Biesheuvel 2025-04-06 18:33 ` [tip: x86/boot] x86/boot: Move the " tip-bot2 for Ard Biesheuvel 2025-04-01 13:34 ` [RFC PATCH 5/6] x86/boot: Move early kernel mapping " Ard Biesheuvel 2025-04-06 18:32 ` [tip: x86/boot] x86/boot: Move the " tip-bot2 for Ard Biesheuvel 2025-04-06 18:51 ` [RFC PATCH 5/6] x86/boot: Move " Ingo Molnar 2025-04-06 19:24 ` Ard Biesheuvel 2025-04-01 13:34 ` [RFC PATCH 6/6] x86/boot: Move early SME init " Ard Biesheuvel 2025-04-06 18:32 ` [tip: x86/boot] x86/boot: Move the " tip-bot2 for Ard Biesheuvel
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