From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
"Peter Zijlstra (Intel)" <peterz@infradead.org>,
Borislav Petkov <bp@suse.de>,
Josh Poimboeuf <jpoimboe@kernel.org>,
Thadeu Lima de Souza Cascardo <cascardo@canonical.com>,
Ben Hutchings <ben@decadent.org.uk>
Subject: [PATCH 5.10 100/148] x86/entry: Add kernel IBRS implementation
Date: Sat, 23 Jul 2022 11:55:12 +0200 [thread overview]
Message-ID: <20220723095252.429231691@linuxfoundation.org> (raw)
In-Reply-To: <20220723095224.302504400@linuxfoundation.org>
From: Peter Zijlstra <peterz@infradead.org>
commit 2dbb887e875b1de3ca8f40ddf26bcfe55798c609 upstream.
Implement Kernel IBRS - currently the only known option to mitigate RSB
underflow speculation issues on Skylake hardware.
Note: since IBRS_ENTER requires fuller context established than
UNTRAIN_RET, it must be placed after it. However, since UNTRAIN_RET
itself implies a RET, it must come after IBRS_ENTER. This means
IBRS_ENTER needs to also move UNTRAIN_RET.
Note 2: KERNEL_IBRS is sub-optimal for XenPV.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
[cascardo: conflict at arch/x86/entry/entry_64.S, skip_r11rcx]
[cascardo: conflict at arch/x86/entry/entry_64_compat.S]
[cascardo: conflict fixups, no ANNOTATE_NOENDBR]
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
[bwh: Backported to 5.10: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/entry/calling.h | 58 +++++++++++++++++++++++++++++++++++++
arch/x86/entry/entry_64.S | 44 ++++++++++++++++++++++++----
arch/x86/entry/entry_64_compat.S | 17 ++++++++--
arch/x86/include/asm/cpufeatures.h | 2 -
4 files changed, 111 insertions(+), 10 deletions(-)
--- a/arch/x86/entry/calling.h
+++ b/arch/x86/entry/calling.h
@@ -6,6 +6,8 @@
#include <asm/percpu.h>
#include <asm/asm-offsets.h>
#include <asm/processor-flags.h>
+#include <asm/msr.h>
+#include <asm/nospec-branch.h>
/*
@@ -309,6 +311,62 @@ For 32-bit we have the following convent
#endif
/*
+ * IBRS kernel mitigation for Spectre_v2.
+ *
+ * Assumes full context is established (PUSH_REGS, CR3 and GS) and it clobbers
+ * the regs it uses (AX, CX, DX). Must be called before the first RET
+ * instruction (NOTE! UNTRAIN_RET includes a RET instruction)
+ *
+ * The optional argument is used to save/restore the current value,
+ * which is used on the paranoid paths.
+ *
+ * Assumes x86_spec_ctrl_{base,current} to have SPEC_CTRL_IBRS set.
+ */
+.macro IBRS_ENTER save_reg
+ ALTERNATIVE "jmp .Lend_\@", "", X86_FEATURE_KERNEL_IBRS
+ movl $MSR_IA32_SPEC_CTRL, %ecx
+
+.ifnb \save_reg
+ rdmsr
+ shl $32, %rdx
+ or %rdx, %rax
+ mov %rax, \save_reg
+ test $SPEC_CTRL_IBRS, %eax
+ jz .Ldo_wrmsr_\@
+ lfence
+ jmp .Lend_\@
+.Ldo_wrmsr_\@:
+.endif
+
+ movq PER_CPU_VAR(x86_spec_ctrl_current), %rdx
+ movl %edx, %eax
+ shr $32, %rdx
+ wrmsr
+.Lend_\@:
+.endm
+
+/*
+ * Similar to IBRS_ENTER, requires KERNEL GS,CR3 and clobbers (AX, CX, DX)
+ * regs. Must be called after the last RET.
+ */
+.macro IBRS_EXIT save_reg
+ ALTERNATIVE "jmp .Lend_\@", "", X86_FEATURE_KERNEL_IBRS
+ movl $MSR_IA32_SPEC_CTRL, %ecx
+
+.ifnb \save_reg
+ mov \save_reg, %rdx
+.else
+ movq PER_CPU_VAR(x86_spec_ctrl_current), %rdx
+ andl $(~SPEC_CTRL_IBRS), %edx
+.endif
+
+ movl %edx, %eax
+ shr $32, %rdx
+ wrmsr
+.Lend_\@:
+.endm
+
+/*
* Mitigate Spectre v1 for conditional swapgs code paths.
*
* FENCE_SWAPGS_USER_ENTRY is used in the user entry swapgs code path, to
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -102,7 +102,6 @@ SYM_CODE_START(entry_SYSCALL_64)
movq PER_CPU_VAR(cpu_current_top_of_stack), %rsp
SYM_INNER_LABEL(entry_SYSCALL_64_safe_stack, SYM_L_GLOBAL)
- UNTRAIN_RET
/* Construct struct pt_regs on stack */
pushq $__USER_DS /* pt_regs->ss */
@@ -118,6 +117,11 @@ SYM_INNER_LABEL(entry_SYSCALL_64_after_h
/* IRQs are off. */
movq %rax, %rdi
movq %rsp, %rsi
+
+ /* clobbers %rax, make sure it is after saving the syscall nr */
+ IBRS_ENTER
+ UNTRAIN_RET
+
call do_syscall_64 /* returns with IRQs disabled */
/*
@@ -192,6 +196,7 @@ SYM_INNER_LABEL(entry_SYSCALL_64_after_h
* perf profiles. Nothing jumps here.
*/
syscall_return_via_sysret:
+ IBRS_EXIT
POP_REGS pop_rdi=0
/*
@@ -569,6 +574,7 @@ __irqentry_text_end:
SYM_CODE_START_LOCAL(common_interrupt_return)
SYM_INNER_LABEL(swapgs_restore_regs_and_return_to_usermode, SYM_L_GLOBAL)
+ IBRS_EXIT
#ifdef CONFIG_DEBUG_ENTRY
/* Assert that pt_regs indicates user mode. */
testb $3, CS(%rsp)
@@ -889,6 +895,9 @@ SYM_CODE_END(xen_failsafe_callback)
* 1 -> no SWAPGS on exit
*
* Y GSBASE value at entry, must be restored in paranoid_exit
+ *
+ * R14 - old CR3
+ * R15 - old SPEC_CTRL
*/
SYM_CODE_START_LOCAL(paranoid_entry)
UNWIND_HINT_FUNC
@@ -912,7 +921,6 @@ SYM_CODE_START_LOCAL(paranoid_entry)
* be retrieved from a kernel internal table.
*/
SAVE_AND_SWITCH_TO_KERNEL_CR3 scratch_reg=%rax save_reg=%r14
- UNTRAIN_RET
/*
* Handling GSBASE depends on the availability of FSGSBASE.
@@ -934,7 +942,7 @@ SYM_CODE_START_LOCAL(paranoid_entry)
* is needed here.
*/
SAVE_AND_SET_GSBASE scratch_reg=%rax save_reg=%rbx
- RET
+ jmp .Lparanoid_gsbase_done
.Lparanoid_entry_checkgs:
/* EBX = 1 -> kernel GSBASE active, no restore required */
@@ -953,8 +961,16 @@ SYM_CODE_START_LOCAL(paranoid_entry)
xorl %ebx, %ebx
swapgs
.Lparanoid_kernel_gsbase:
-
FENCE_SWAPGS_KERNEL_ENTRY
+.Lparanoid_gsbase_done:
+
+ /*
+ * Once we have CR3 and %GS setup save and set SPEC_CTRL. Just like
+ * CR3 above, keep the old value in a callee saved register.
+ */
+ IBRS_ENTER save_reg=%r15
+ UNTRAIN_RET
+
RET
SYM_CODE_END(paranoid_entry)
@@ -976,9 +992,19 @@ SYM_CODE_END(paranoid_entry)
* 1 -> no SWAPGS on exit
*
* Y User space GSBASE, must be restored unconditionally
+ *
+ * R14 - old CR3
+ * R15 - old SPEC_CTRL
*/
SYM_CODE_START_LOCAL(paranoid_exit)
UNWIND_HINT_REGS
+
+ /*
+ * Must restore IBRS state before both CR3 and %GS since we need access
+ * to the per-CPU x86_spec_ctrl_shadow variable.
+ */
+ IBRS_EXIT save_reg=%r15
+
/*
* The order of operations is important. RESTORE_CR3 requires
* kernel GSBASE.
@@ -1025,9 +1051,11 @@ SYM_CODE_START_LOCAL(error_entry)
FENCE_SWAPGS_USER_ENTRY
/* We have user CR3. Change to kernel CR3. */
SWITCH_TO_KERNEL_CR3 scratch_reg=%rax
+ IBRS_ENTER
UNTRAIN_RET
.Lerror_entry_from_usermode_after_swapgs:
+
/* Put us onto the real thread stack. */
popq %r12 /* save return addr in %12 */
movq %rsp, %rdi /* arg0 = pt_regs pointer */
@@ -1081,6 +1109,7 @@ SYM_CODE_START_LOCAL(error_entry)
SWAPGS
FENCE_SWAPGS_USER_ENTRY
SWITCH_TO_KERNEL_CR3 scratch_reg=%rax
+ IBRS_ENTER
UNTRAIN_RET
/*
@@ -1176,7 +1205,6 @@ SYM_CODE_START(asm_exc_nmi)
movq %rsp, %rdx
movq PER_CPU_VAR(cpu_current_top_of_stack), %rsp
UNWIND_HINT_IRET_REGS base=%rdx offset=8
- UNTRAIN_RET
pushq 5*8(%rdx) /* pt_regs->ss */
pushq 4*8(%rdx) /* pt_regs->rsp */
pushq 3*8(%rdx) /* pt_regs->flags */
@@ -1187,6 +1215,9 @@ SYM_CODE_START(asm_exc_nmi)
PUSH_AND_CLEAR_REGS rdx=(%rdx)
ENCODE_FRAME_POINTER
+ IBRS_ENTER
+ UNTRAIN_RET
+
/*
* At this point we no longer need to worry about stack damage
* due to nesting -- we're on the normal thread stack and we're
@@ -1409,6 +1440,9 @@ end_repeat_nmi:
movq $-1, %rsi
call exc_nmi
+ /* Always restore stashed SPEC_CTRL value (see paranoid_entry) */
+ IBRS_EXIT save_reg=%r15
+
/* Always restore stashed CR3 value (see paranoid_entry) */
RESTORE_CR3 scratch_reg=%r15 save_reg=%r14
--- a/arch/x86/entry/entry_64_compat.S
+++ b/arch/x86/entry/entry_64_compat.S
@@ -4,7 +4,6 @@
*
* Copyright 2000-2002 Andi Kleen, SuSE Labs.
*/
-#include "calling.h"
#include <asm/asm-offsets.h>
#include <asm/current.h>
#include <asm/errno.h>
@@ -18,6 +17,8 @@
#include <linux/linkage.h>
#include <linux/err.h>
+#include "calling.h"
+
.section .entry.text, "ax"
/*
@@ -72,7 +73,6 @@ SYM_CODE_START(entry_SYSENTER_compat)
pushq $__USER32_CS /* pt_regs->cs */
pushq $0 /* pt_regs->ip = 0 (placeholder) */
SYM_INNER_LABEL(entry_SYSENTER_compat_after_hwframe, SYM_L_GLOBAL)
- UNTRAIN_RET
/*
* User tracing code (ptrace or signal handlers) might assume that
@@ -114,6 +114,9 @@ SYM_INNER_LABEL(entry_SYSENTER_compat_af
cld
+ IBRS_ENTER
+ UNTRAIN_RET
+
/*
* SYSENTER doesn't filter flags, so we need to clear NT and AC
* ourselves. To save a few cycles, we can check whether
@@ -213,7 +216,6 @@ SYM_CODE_START(entry_SYSCALL_compat)
movq PER_CPU_VAR(cpu_current_top_of_stack), %rsp
SYM_INNER_LABEL(entry_SYSCALL_compat_safe_stack, SYM_L_GLOBAL)
- UNTRAIN_RET
/* Construct struct pt_regs on stack */
pushq $__USER32_DS /* pt_regs->ss */
@@ -255,6 +257,9 @@ SYM_INNER_LABEL(entry_SYSCALL_compat_aft
UNWIND_HINT_REGS
+ IBRS_ENTER
+ UNTRAIN_RET
+
movq %rsp, %rdi
call do_fast_syscall_32
/* XEN PV guests always use IRET path */
@@ -269,6 +274,8 @@ sysret32_from_system_call:
*/
STACKLEAK_ERASE
+ IBRS_EXIT
+
movq RBX(%rsp), %rbx /* pt_regs->rbx */
movq RBP(%rsp), %rbp /* pt_regs->rbp */
movq EFLAGS(%rsp), %r11 /* pt_regs->flags (in r11) */
@@ -380,7 +387,6 @@ SYM_CODE_START(entry_INT80_compat)
pushq (%rdi) /* pt_regs->di */
.Lint80_keep_stack:
- UNTRAIN_RET
pushq %rsi /* pt_regs->si */
xorl %esi, %esi /* nospec si */
pushq %rdx /* pt_regs->dx */
@@ -413,6 +419,9 @@ SYM_CODE_START(entry_INT80_compat)
cld
+ IBRS_ENTER
+ UNTRAIN_RET
+
movq %rsp, %rdi
call do_int80_syscall_32
jmp swapgs_restore_regs_and_return_to_usermode
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -203,7 +203,7 @@
#define X86_FEATURE_PROC_FEEDBACK ( 7*32+ 9) /* AMD ProcFeedbackInterface */
#define X86_FEATURE_SME ( 7*32+10) /* AMD Secure Memory Encryption */
#define X86_FEATURE_PTI ( 7*32+11) /* Kernel Page Table Isolation enabled */
-/* FREE! ( 7*32+12) */
+#define X86_FEATURE_KERNEL_IBRS ( 7*32+12) /* "" Set/clear IBRS on kernel entry/exit */
/* FREE! ( 7*32+13) */
#define X86_FEATURE_INTEL_PPIN ( 7*32+14) /* Intel Processor Inventory Number */
#define X86_FEATURE_CDP_L2 ( 7*32+15) /* Code and Data Prioritization L2 */
next prev parent reply other threads:[~2022-07-23 10:07 UTC|newest]
Thread overview: 156+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-23 9:53 [PATCH 5.10 000/148] 5.10.133-rc1 review Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 001/148] KVM/VMX: Use TEST %REG,%REG instead of CMP $0,%REG in vmenter.S Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 002/148] KVM/nVMX: Use __vmx_vcpu_run in nested_vmx_check_vmentry_hw Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 003/148] objtool: Refactor ORC section generation Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 004/148] objtool: Add alt_group struct Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 005/148] objtool: Support stack layout changes in alternatives Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 006/148] objtool: Support retpoline jump detection for vmlinux.o Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 007/148] objtool: Assume only ELF functions do sibling calls Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 008/148] objtool: Combine UNWIND_HINT_RET_OFFSET and UNWIND_HINT_FUNC Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 009/148] x86/xen: Support objtool validation in xen-asm.S Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 010/148] x86/xen: Support objtool vmlinux.o validation in xen-head.S Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 011/148] x86/alternative: Merge include files Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 012/148] x86/alternative: Support not-feature Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 013/148] x86/alternative: Support ALTERNATIVE_TERNARY Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 014/148] x86/alternative: Use ALTERNATIVE_TERNARY() in _static_cpu_has() Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 015/148] x86/insn: Rename insn_decode() to insn_decode_from_regs() Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 016/148] x86/insn: Add a __ignore_sync_check__ marker Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 017/148] x86/insn: Add an insn_decode() API Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 018/148] x86/insn-eval: Handle return values from the decoder Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 019/148] x86/alternative: Use insn_decode() Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 020/148] x86: Add insn_decode_kernel() Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 021/148] x86/alternatives: Optimize optimize_nops() Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 022/148] x86/retpoline: Simplify retpolines Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 023/148] objtool: Correctly handle retpoline thunk calls Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 024/148] objtool: Handle per arch retpoline naming Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 025/148] objtool: Rework the elf_rebuild_reloc_section() logic Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 026/148] objtool: Add elf_create_reloc() helper Greg Kroah-Hartman
2022-07-23 9:53 ` [PATCH 5.10 027/148] objtool: Create reloc sections implicitly Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 028/148] objtool: Extract elf_strtab_concat() Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 029/148] objtool: Extract elf_symbol_add() Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 030/148] objtool: Add elf_create_undef_symbol() Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 031/148] objtool: Keep track of retpoline call sites Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 032/148] objtool: Cache instruction relocs Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 033/148] objtool: Skip magical retpoline .altinstr_replacement Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 034/148] objtool/x86: Rewrite retpoline thunk calls Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 035/148] objtool: Support asm jump tables Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 036/148] x86/alternative: Optimize single-byte NOPs at an arbitrary position Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 037/148] objtool: Fix .symtab_shndx handling for elf_create_undef_symbol() Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 038/148] objtool: Only rewrite unconditional retpoline thunk calls Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 039/148] objtool/x86: Ignore __x86_indirect_alt_* symbols Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 040/148] objtool: Dont make .altinstructions writable Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 041/148] objtool: Teach get_alt_entry() about more relocation types Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 042/148] objtool: print out the symbol type when complaining about it Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 043/148] objtool: Remove reloc symbol type checks in get_alt_entry() Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 044/148] objtool: Make .altinstructions section entry size consistent Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 045/148] objtool: Introduce CFI hash Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 046/148] objtool: Handle __sanitize_cov*() tail calls Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 047/148] objtool: Classify symbols Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 048/148] objtool: Explicitly avoid self modifying code in .altinstr_replacement Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 049/148] objtool,x86: Replace alternatives with .retpoline_sites Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 050/148] x86/retpoline: Remove unused replacement symbols Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 051/148] x86/asm: Fix register order Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 052/148] x86/asm: Fixup odd GEN-for-each-reg.h usage Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 053/148] x86/retpoline: Move the retpoline thunk declarations to nospec-branch.h Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 054/148] x86/retpoline: Create a retpoline thunk array Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 055/148] x86/alternative: Implement .retpoline_sites support Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 056/148] x86/alternative: Handle Jcc __x86_indirect_thunk_\reg Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 057/148] x86/alternative: Try inline spectre_v2=retpoline,amd Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 058/148] x86/alternative: Add debug prints to apply_retpolines() Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 059/148] bpf,x86: Simplify computing label offsets Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 060/148] bpf,x86: Respect X86_FEATURE_RETPOLINE* Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 061/148] x86/lib/atomic64_386_32: Rename things Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 062/148] x86: Prepare asm files for straight-line-speculation Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 063/148] x86: Prepare inline-asm " Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 064/148] x86/alternative: Relax text_poke_bp() constraint Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 065/148] objtool: Add straight-line-speculation validation Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 066/148] x86: Add straight-line-speculation mitigation Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 067/148] tools arch: Update arch/x86/lib/mem{cpy,set}_64.S copies used in perf bench mem memcpy Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 068/148] kvm/emulate: Fix SETcc emulation function offsets with SLS Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 069/148] objtool: Default ignore INT3 for unreachable Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 070/148] crypto: x86/poly1305 - Fixup SLS Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 071/148] objtool: Fix SLS validation for kcov tail-call replacement Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 072/148] objtool: Fix code relocs vs weak symbols Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 073/148] objtool: Fix type of reloc::addend Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 074/148] objtool: Fix symbol creation Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 075/148] x86/entry: Remove skip_r11rcx Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 076/148] objtool: Fix objtool regression on x32 systems Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 077/148] x86/realmode: build with -D__DISABLE_EXPORTS Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 078/148] x86/kvm/vmx: Make noinstr clean Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 079/148] x86/cpufeatures: Move RETPOLINE flags to word 11 Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 080/148] x86/retpoline: Cleanup some #ifdefery Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 081/148] x86/retpoline: Swizzle retpoline thunk Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 082/148] Makefile: Set retpoline cflags based on CONFIG_CC_IS_{CLANG,GCC} Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 083/148] x86/retpoline: Use -mfunction-return Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 084/148] x86: Undo return-thunk damage Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 085/148] x86,objtool: Create .return_sites Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 086/148] objtool: skip non-text sections when adding return-thunk sites Greg Kroah-Hartman
2022-07-23 9:54 ` [PATCH 5.10 087/148] x86,static_call: Use alternative RET encoding Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 088/148] x86/ftrace: " Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 089/148] x86/bpf: " Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 090/148] x86/kvm: Fix SETcc emulation for return thunks Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 091/148] x86/vsyscall_emu/64: Dont use RET in vsyscall emulation Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 092/148] x86/sev: Avoid using __x86_return_thunk Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 093/148] x86: Use return-thunk in asm code Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 094/148] objtool: Treat .text.__x86.* as noinstr Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 095/148] x86: Add magic AMD return-thunk Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 096/148] x86/bugs: Report AMD retbleed vulnerability Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 097/148] x86/bugs: Add AMD retbleed= boot parameter Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 098/148] x86/bugs: Enable STIBP for JMP2RET Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 099/148] x86/bugs: Keep a per-CPU IA32_SPEC_CTRL value Greg Kroah-Hartman
2022-07-23 9:55 ` Greg Kroah-Hartman [this message]
2022-07-23 9:55 ` [PATCH 5.10 101/148] x86/bugs: Optimize SPEC_CTRL MSR writes Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 102/148] x86/speculation: Add spectre_v2=ibrs option to support Kernel IBRS Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 103/148] x86/bugs: Split spectre_v2_select_mitigation() and spectre_v2_user_select_mitigation() Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 104/148] x86/bugs: Report Intel retbleed vulnerability Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 105/148] intel_idle: Disable IBRS during long idle Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 106/148] objtool: Update Retpoline validation Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 107/148] x86/xen: Rename SYS* entry points Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 108/148] x86/bugs: Add retbleed=ibpb Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 109/148] x86/bugs: Do IBPB fallback check only once Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 110/148] objtool: Add entry UNRET validation Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 111/148] x86/cpu/amd: Add Spectral Chicken Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 112/148] x86/speculation: Fix RSB filling with CONFIG_RETPOLINE=n Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 113/148] x86/speculation: Fix firmware entry SPEC_CTRL handling Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 114/148] x86/speculation: Fix SPEC_CTRL write on SMT state change Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 115/148] x86/speculation: Use cached host SPEC_CTRL value for guest entry/exit Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 116/148] x86/speculation: Remove x86_spec_ctrl_mask Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 117/148] objtool: Re-add UNWIND_HINT_{SAVE_RESTORE} Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 118/148] KVM: VMX: Flatten __vmx_vcpu_run() Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 119/148] KVM: VMX: Convert launched argument to flags Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 120/148] KVM: VMX: Prevent guest RSB poisoning attacks with eIBRS Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 121/148] KVM: VMX: Fix IBRS handling after vmexit Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 122/148] x86/speculation: Fill RSB on vmexit for IBRS Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 123/148] x86/common: Stamp out the stepping madness Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 124/148] x86/cpu/amd: Enumerate BTC_NO Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 125/148] x86/retbleed: Add fine grained Kconfig knobs Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 126/148] x86/bugs: Add Cannon lake to RETBleed affected CPU list Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 127/148] x86/bugs: Do not enable IBPB-on-entry when IBPB is not supported Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 128/148] x86/kexec: Disable RET on kexec Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 129/148] x86/speculation: Disable RRSBA behavior Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 130/148] x86/static_call: Serialize __static_call_fixup() properly Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 131/148] tools/insn: Restore the relative include paths for cross building Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 132/148] x86, kvm: use proper ASM macros for kvm_vcpu_is_preempted Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 133/148] x86/xen: Fix initialisation in hypercall_page after rethunk Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 134/148] x86/ftrace: Add UNWIND_HINT_FUNC annotation for ftrace_stub Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 135/148] x86/asm/32: Fix ANNOTATE_UNRET_SAFE use on 32-bit Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 136/148] x86/speculation: Use DECLARE_PER_CPU for x86_spec_ctrl_current Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 137/148] efi/x86: use naked RET on mixed mode call wrapper Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 138/148] x86/kvm: fix FASTOP_SIZE when return thunks are enabled Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 139/148] KVM: emulate: do not adjust size of fastop and setcc subroutines Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 140/148] tools arch x86: Sync the msr-index.h copy with the kernel sources Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 141/148] tools headers cpufeatures: Sync " Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 142/148] x86/bugs: Remove apostrophe typo Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 143/148] um: Add missing apply_returns() Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 144/148] x86: Use -mindirect-branch-cs-prefix for RETPOLINE builds Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 145/148] kvm: fix objtool relocation warning Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 146/148] objtool: Fix elf_create_undef_symbol() endianness Greg Kroah-Hartman
2022-07-23 9:55 ` [PATCH 5.10 147/148] tools arch: Update arch/x86/lib/mem{cpy,set}_64.S copies used in perf bench mem memcpy - again Greg Kroah-Hartman
2022-07-23 9:56 ` [PATCH 5.10 148/148] tools headers: Remove broken definition of __LITTLE_ENDIAN Greg Kroah-Hartman
2022-07-23 14:12 ` [PATCH 5.10 000/148] 5.10.133-rc1 review Guenter Roeck
2022-07-23 18:03 ` Daniel Díaz
2022-07-24 4:49 ` Rudi Heitbaum
2022-07-24 8:06 ` Sudip Mukherjee (Codethink)
2022-07-25 8:03 ` Jon Hunter
2022-07-25 10:19 ` Pavel Machek
2022-07-25 17:15 ` Florian Fainelli
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