[GIT PULL] x86 fixes

Ingo Molnar
2017-11-26T12:48:34Z

Linus,

Please pull the latest x86-urgent-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-urgent-for-linus

# HEAD: 12a78d43de767eaf8fb272facb7a7b6f2dc6a9df x86/decoder: Add new TEST instruction pattern

Misc fixes:

- topology enumeration fixes
- KASAN fix
- two entry fixes (not yet the big series related to KASLR)
- remove obsolete code
- instruction decoder fix
- better /dev/mem sanity checks, hopefully working better this time
- pkeys fixes
- two ACPI fixes
- 5-level paging related fixes
- UMIP fixes that should make application visible faults more debuggable
- boot fix for weird virtualization environment

out-of-topic modifications in x86-urgent-for-linus:
-----------------------------------------------------
drivers/pci/Kconfig # fd2fa6c18b72: x86/PCI: Remove unused Hyper
drivers/pci/Makefile # fd2fa6c18b72: x86/PCI: Remove unused Hyper
drivers/pci/htirq.c # fd2fa6c18b72: x86/PCI: Remove unused Hyper
include/linux/htirq.h # fd2fa6c18b72: x86/PCI: Remove unused Hyper
include/linux/pci.h # fd2fa6c18b72: x86/PCI: Remove unused Hyper
tools/testing/selftests/x86/5lvl.c # 97f404ad3e53: x86/selftests: Add test for
tools/testing/selftests/x86/Makefile# 97f404ad3e53: x86/selftests: Add test for
tools/testing/selftests/x86/mpx-hw.h# a6400120d042: x86/mpx/selftests: Fix up we
tools/testing/selftests/x86/pkey-helpers.h# 7b659ee3e1fe: x86/pkeys/selftests: Fix pro
tools/testing/selftests/x86/protection_keys.c# 91c49c2deb96: x86/pkeys/selftests: Rename

Thanks,

Ingo

------------------>
Andi Kleen (2):
perf/x86/intel/uncore: Cache logical pkg id in uncore driver
x86/topology: Avoid wasting 128k for package id array

Andrey Ryabinin (1):
x86/mm/kasan: Don't use vmemmap_populate() to initialize shadow

Andy Lutomirski (2):
x86/entry/64: Fix entry_SYSCALL_64_after_hwframe() IRQ tracing
x86/entry/64: Add missing irqflags tracing to native_load_gs_index()

Bjorn Helgaas (1):
x86/PCI: Remove unused HyperTransport interrupt support

Borislav Petkov (1):
x86/umip: Fix insn_get_code_seg_params()'s return value

Chao Fan (1):
x86/boot/KASLR: Remove unused variable

Craig Bergstrom (1):
x86/mm: Limit mmap() of /dev/mem to valid physical addresses

Dave Hansen (4):
x86/pkeys: Update documentation about availability
x86/mpx/selftests: Fix up weird arrays
x86/pkeys/selftests: Rename 'si_pkey' to 'siginfo_pkey'
x86/pkeys/selftests: Fix protection keys write() warning

Kirill A. Shutemov (2):
x86/mm: Prevent non-MAP_FIXED mapping across DEFAULT_MAP_WINDOW border
x86/selftests: Add test for mapping placement for 5-level paging

Masami Hiramatsu (1):
x86/decoder: Add new TEST instruction pattern

Prarit Bhargava (1):
x86/smpboot: Fix __max_logical_packages estimate

Ricardo Neri (4):
x86/umip: Select X86_INTEL_UMIP by default
x86/umip: Print a line in the boot log that UMIP has been enabled
x86/umip: Identify the STR and SLDT instructions
x86/umip: Print a warning into the syslog if UMIP-protected instructions are used

Tom Lendacky (1):
x86/boot: Fix boot failure when SMP MP-table is based at 0

Vikas C Sajjan (2):
x86/acpi: Handle SCI interrupts above legacy space gracefully
x86/acpi: Reduce code duplication in mp_override_legacy_irq()

Documentation/x86/protection-keys.txt | 9 +-
arch/x86/Kconfig | 14 +-
arch/x86/boot/compressed/kaslr.c | 5 +-
arch/x86/entry/entry_64.S | 14 +-
arch/x86/events/intel/uncore.c | 4 +-
arch/x86/events/intel/uncore.h | 2 +-
arch/x86/events/intel/uncore_snbep.c | 2 +-
arch/x86/include/asm/elf.h | 1 +
arch/x86/include/asm/hw_irq.h | 8 --
arch/x86/include/asm/hypertransport.h | 46 ------
arch/x86/include/asm/insn-eval.h | 2 +-
arch/x86/include/asm/io.h | 4 +
arch/x86/include/asm/irqdomain.h | 6 -
arch/x86/include/asm/processor.h | 1 +
arch/x86/kernel/acpi/boot.c | 61 +++++---
arch/x86/kernel/apic/Makefile | 1 -
arch/x86/kernel/apic/htirq.c | 198 --------------------------
arch/x86/kernel/apic/vector.c | 5 +-
arch/x86/kernel/cpu/common.c | 2 +
arch/x86/kernel/mpparse.c | 6 +-
arch/x86/kernel/smpboot.c | 128 +++++------------
arch/x86/kernel/sys_x86_64.c | 10 +-
arch/x86/kernel/umip.c | 88 ++++++++++--
arch/x86/lib/insn-eval.c | 4 +-
arch/x86/lib/x86-opcode-map.txt | 2 +-
arch/x86/mm/hugetlbpage.c | 11 +-
arch/x86/mm/kasan_init_64.c | 143 ++++++++++++++++++-
arch/x86/mm/mmap.c | 62 ++++++++
drivers/char/mem.c | 4 +
drivers/pci/Kconfig | 9 --
drivers/pci/Makefile | 3 -
drivers/pci/htirq.c | 135 ------------------
include/linux/htirq.h | 39 -----
include/linux/pci.h | 6 -
tools/testing/selftests/x86/5lvl.c | 177 +++++++++++++++++++++++
tools/testing/selftests/x86/Makefile | 2 +-
tools/testing/selftests/x86/mpx-hw.h | 4 +-
tools/testing/selftests/x86/pkey-helpers.h | 5 +-
tools/testing/selftests/x86/protection_keys.c | 10 +-
39 files changed, 609 insertions(+), 624 deletions(-)
delete mode 100644 arch/x86/include/asm/hypertransport.h
delete mode 100644 arch/x86/kernel/apic/htirq.c
delete mode 100644 drivers/pci/htirq.c
delete mode 100644 include/linux/htirq.h
create mode 100644 tools/testing/selftests/x86/5lvl.c

diff --git a/Documentation/x86/protection-keys.txt b/Documentation/x86/protection-keys.txt
index fa46dcb347bc..ecb0d2dadfb7 100644
--- a/Documentation/x86/protection-keys.txt
+++ b/Documentation/x86/protection-keys.txt
@@ -1,5 +1,10 @@
-Memory Protection Keys for Userspace (PKU aka PKEYs) is a CPU feature
-which will be found on future Intel CPUs.
+Memory Protection Keys for Userspace (PKU aka PKEYs) is a feature
+which is found on Intel's Skylake "Scalable Processor" Server CPUs.
+It will be avalable in future non-server parts.
+
+For anyone wishing to test or use this feature, it is available in
+Amazon's EC2 C5 instances and is known to work there using an Ubuntu
+17.04 image.

Memory Protection Keys provides a mechanism for enforcing page-based
protections, but without requiring modification of the page tables
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index f08977d82ca0..09dcc94c4484 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -110,7 +110,7 @@ config X86
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_HUGE_VMAP if X86_64 || X86_PAE
select HAVE_ARCH_JUMP_LABEL
- select HAVE_ARCH_KASAN if X86_64 && SPARSEMEM_VMEMMAP
+ select HAVE_ARCH_KASAN if X86_64
select HAVE_ARCH_KGDB
select HAVE_ARCH_KMEMCHECK
select HAVE_ARCH_MMAP_RND_BITS if MMU
@@ -1805,14 +1805,20 @@ config X86_SMAP
If unsure, say Y.

config X86_INTEL_UMIP
- def_bool n
+ def_bool y
depends on CPU_SUP_INTEL
prompt "Intel User Mode Instruction Prevention" if EXPERT
---help---
The User Mode Instruction Prevention (UMIP) is a security
feature in newer Intel processors. If enabled, a general
- protection fault is issued if the instructions SGDT, SLDT,
- SIDT, SMSW and STR are executed in user mode.
+ protection fault is issued if the SGDT, SLDT, SIDT, SMSW
+ or STR instructions are executed in user mode. These instructions
+ unnecessarily expose information about the hardware state.
+
+ The vast majority of applications do not use these instructions.
+ For the very few that do, software emulation is provided in
+ specific cases in protected and virtual-8086 modes. Emulated
+ results are dummy.

config X86_INTEL_MPX
prompt "Intel MPX (Memory Protection Extensions)"
diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c
index a63fbc25ce84..8199a6187251 100644
--- a/arch/x86/boot/compressed/kaslr.c
+++ b/arch/x86/boot/compressed/kaslr.c
@@ -171,7 +171,6 @@ parse_memmap(char *p, unsigned long long *start, unsigned long long *size)
static void mem_avoid_memmap(char *str)
{
static int i;
- int rc;

if (i >= MAX_MEMMAP_REGIONS)
return;
@@ -219,7 +218,7 @@ static int handle_mem_memmap(void)
return 0;

tmp_cmdline = malloc(len + 1);
- if (!tmp_cmdline )
+ if (!tmp_cmdline)
error("Failed to allocate space for tmp_cmdline");

memcpy(tmp_cmdline, args, len);
@@ -363,7 +362,7 @@ static void mem_avoid_init(unsigned long input, unsigned long input_size,
cmd_line |= boot_params->hdr.cmd_line_ptr;
/* Calculate size of cmd_line. */
ptr = (char *)(unsigned long)cmd_line;
- for (cmd_line_size = 0; ptr[cmd_line_size++]; )
+ for (cmd_line_size = 0; ptr[cmd_line_size++];)
;
mem_avoid[MEM_AVOID_CMDLINE].start = cmd_line;
mem_avoid[MEM_AVOID_CMDLINE].size = cmd_line_size;
diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index a2b30ec69497..f81d50d7ceac 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -51,15 +51,19 @@ ENTRY(native_usergs_sysret64)
END(native_usergs_sysret64)
#endif /* CONFIG_PARAVIRT */

-.macro TRACE_IRQS_IRETQ
+.macro TRACE_IRQS_FLAGS flags:req
#ifdef CONFIG_TRACE_IRQFLAGS
- bt $9, EFLAGS(%rsp) /* interrupts off? */
+ bt $9, \flags /* interrupts off? */
jnc 1f
TRACE_IRQS_ON
1:
#endif
.endm

+.macro TRACE_IRQS_IRETQ
+ TRACE_IRQS_FLAGS EFLAGS(%rsp)
+.endm
+
/*
* When dynamic function tracer is enabled it will add a breakpoint
* to all locations that it is about to modify, sync CPUs, update
@@ -148,8 +152,6 @@ ENTRY(entry_SYSCALL_64)
movq %rsp, PER_CPU_VAR(rsp_scratch)
movq PER_CPU_VAR(cpu_current_top_of_stack), %rsp

- TRACE_IRQS_OFF
-
/* Construct struct pt_regs on stack */
pushq $__USER_DS /* pt_regs->ss */
pushq PER_CPU_VAR(rsp_scratch) /* pt_regs->sp */
@@ -170,6 +172,8 @@ GLOBAL(entry_SYSCALL_64_after_hwframe)
sub $(6*8), %rsp /* pt_regs->bp, bx, r12-15 not saved */
UNWIND_HINT_REGS extra=0

+ TRACE_IRQS_OFF
+
/*
* If we need to do entry work or if we guess we'll need to do
* exit work, go straight to the slow path.
@@ -943,11 +947,13 @@ ENTRY(native_load_gs_index)
FRAME_BEGIN
pushfq
DISABLE_INTERRUPTS(CLBR_ANY & ~CLBR_RDI)
+ TRACE_IRQS_OFF
SWAPGS
.Lgs_change:
movl %edi, %gs
2: ALTERNATIVE "", "mfence", X86_BUG_SWAPGS_FENCE
SWAPGS
+ TRACE_IRQS_FLAGS (%rsp)
popfq
FRAME_END
ret
diff --git a/arch/x86/events/intel/uncore.c b/arch/x86/events/intel/uncore.c
index d45e06346f14..7874c980d569 100644
--- a/arch/x86/events/intel/uncore.c
+++ b/arch/x86/events/intel/uncore.c
@@ -975,10 +975,10 @@ static void uncore_pci_remove(struct pci_dev *pdev)
int i, phys_id, pkg;

phys_id = uncore_pcibus_to_physid(pdev->bus);
- pkg = topology_phys_to_logical_pkg(phys_id);

box = pci_get_drvdata(pdev);
if (!box) {
+ pkg = topology_phys_to_logical_pkg(phys_id);
for (i = 0; i < UNCORE_EXTRA_PCI_DEV_MAX; i++) {
if (uncore_extra_pci_dev[pkg].dev[i] == pdev) {
uncore_extra_pci_dev[pkg].dev[i] = NULL;
@@ -994,7 +994,7 @@ static void uncore_pci_remove(struct pci_dev *pdev)
return;

pci_set_drvdata(pdev, NULL);
- pmu->boxes[pkg] = NULL;
+ pmu->boxes[box->pkgid] = NULL;
if (atomic_dec_return(&pmu->activeboxes) == 0)
uncore_pmu_unregister(pmu);
uncore_box_exit(box);
diff --git a/arch/x86/events/intel/uncore.h b/arch/x86/events/intel/uncore.h
index 4364191e7c6b..414dc7e7c950 100644
--- a/arch/x86/events/intel/uncore.h
+++ b/arch/x86/events/intel/uncore.h
@@ -100,7 +100,7 @@ struct intel_uncore_extra_reg {

struct intel_uncore_box {
int pci_phys_id;
- int pkgid;
+ int pkgid; /* Logical package ID */
int n_active; /* number of active events */
int n_events;
int cpu; /* cpu to collect events */
diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c
index 95cb19f4e06f..de8f8625213c 100644
--- a/arch/x86/events/intel/uncore_snbep.c
+++ b/arch/x86/events/intel/uncore_snbep.c
@@ -1057,7 +1057,7 @@ static void snbep_qpi_enable_event(struct intel_uncore_box *box, struct perf_eve

if (reg1->idx != EXTRA_REG_NONE) {
int idx = box->pmu->pmu_idx + SNBEP_PCI_QPI_PORT0_FILTER;
- int pkg = topology_phys_to_logical_pkg(box->pci_phys_id);
+ int pkg = box->pkgid;
struct pci_dev *filter_pdev = uncore_extra_pci_dev[pkg].dev[idx];

if (filter_pdev) {
diff --git a/arch/x86/include/asm/elf.h b/arch/x86/include/asm/elf.h
index 3a091cea36c5..0d157d2a1e2a 100644
--- a/arch/x86/include/asm/elf.h
+++ b/arch/x86/include/asm/elf.h
@@ -309,6 +309,7 @@ static inline int mmap_is_ia32(void)
extern unsigned long task_size_32bit(void);
extern unsigned long task_size_64bit(int full_addr_space);
extern unsigned long get_mmap_base(int is_legacy);
+extern bool mmap_address_hint_valid(unsigned long addr, unsigned long len);

#ifdef CONFIG_X86_32

diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h
index b80e46733909..2851077b6051 100644
--- a/arch/x86/include/asm/hw_irq.h
+++ b/arch/x86/include/asm/hw_irq.h
@@ -99,14 +99,6 @@ struct irq_alloc_info {
void *dmar_data;
};
#endif
-#ifdef CONFIG_HT_IRQ
- struct {
- int ht_pos;
- int ht_idx;
- struct pci_dev *ht_dev;
- void *ht_update;
- };
-#endif
#ifdef CONFIG_X86_UV
struct {
int uv_limit;
diff --git a/arch/x86/include/asm/hypertransport.h b/arch/x86/include/asm/hypertransport.h
deleted file mode 100644
index 5d55df352879..000000000000
--- a/arch/x86/include/asm/hypertransport.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_X86_HYPERTRANSPORT_H
-#define _ASM_X86_HYPERTRANSPORT_H
-
-/*
- * Constants for x86 Hypertransport Interrupts.
- */
-
-#define HT_IRQ_LOW_BASE 0xf8000000
-
-#define HT_IRQ_LOW_VECTOR_SHIFT 16
-#define HT_IRQ_LOW_VECTOR_MASK 0x00ff0000
-#define HT_IRQ_LOW_VECTOR(v) \
- (((v) << HT_IRQ_LOW_VECTOR_SHIFT) & HT_IRQ_LOW_VECTOR_MASK)
-
-#define HT_IRQ_LOW_DEST_ID_SHIFT 8
-#define HT_IRQ_LOW_DEST_ID_MASK 0x0000ff00
-#define HT_IRQ_LOW_DEST_ID(v) \
- (((v) << HT_IRQ_LOW_DEST_ID_SHIFT) & HT_IRQ_LOW_DEST_ID_MASK)
-
-#define HT_IRQ_LOW_DM_PHYSICAL 0x0000000
-#define HT_IRQ_LOW_DM_LOGICAL 0x0000040
-
-#define HT_IRQ_LOW_RQEOI_EDGE 0x0000000
-#define HT_IRQ_LOW_RQEOI_LEVEL 0x0000020
-
-
-#define HT_IRQ_LOW_MT_FIXED 0x0000000
-#define HT_IRQ_LOW_MT_ARBITRATED 0x0000004
-#define HT_IRQ_LOW_MT_SMI 0x0000008
-#define HT_IRQ_LOW_MT_NMI 0x000000c
-#define HT_IRQ_LOW_MT_INIT 0x0000010
-#define HT_IRQ_LOW_MT_STARTUP 0x0000014
-#define HT_IRQ_LOW_MT_EXTINT 0x0000018
-#define HT_IRQ_LOW_MT_LINT1 0x000008c
-#define HT_IRQ_LOW_MT_LINT0 0x0000098
-
-#define HT_IRQ_LOW_IRQ_MASKED 0x0000001
-
-
-#define HT_IRQ_HIGH_DEST_ID_SHIFT 0
-#define HT_IRQ_HIGH_DEST_ID_MASK 0x00ffffff
-#define HT_IRQ_HIGH_DEST_ID(v) \
- ((((v) >> 8) << HT_IRQ_HIGH_DEST_ID_SHIFT) & HT_IRQ_HIGH_DEST_ID_MASK)
-
-#endif /* _ASM_X86_HYPERTRANSPORT_H */
diff --git a/arch/x86/include/asm/insn-eval.h b/arch/x86/include/asm/insn-eval.h
index e1d3b4ce8a92..2b6ccf2c49f1 100644
--- a/arch/x86/include/asm/insn-eval.h
+++ b/arch/x86/include/asm/insn-eval.h
@@ -18,6 +18,6 @@
void __user *insn_get_addr_ref(struct insn *insn, struct pt_regs *regs);
int insn_get_modrm_rm_off(struct insn *insn, struct pt_regs *regs);
unsigned long insn_get_seg_base(struct pt_regs *regs, int seg_reg_idx);
-char insn_get_code_seg_params(struct pt_regs *regs);
+int insn_get_code_seg_params(struct pt_regs *regs);

#endif /* _ASM_X86_INSN_EVAL_H */
diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
index 93ae8aee1780..95e948627fd0 100644
--- a/arch/x86/include/asm/io.h
+++ b/arch/x86/include/asm/io.h
@@ -111,6 +111,10 @@ build_mmio_write(__writeq, "q", unsigned long, "r", )

#endif

+#define ARCH_HAS_VALID_PHYS_ADDR_RANGE
+extern int valid_phys_addr_range(phys_addr_t addr, size_t size);
+extern int valid_mmap_phys_addr_range(unsigned long pfn, size_t size);
+
/**
* virt_to_phys - map virtual addresses to physical
* @address: address to remap
diff --git a/arch/x86/include/asm/irqdomain.h b/arch/x86/include/asm/irqdomain.h
index f695cc6b8e1f..139feef467f7 100644
--- a/arch/x86/include/asm/irqdomain.h
+++ b/arch/x86/include/asm/irqdomain.h
@@ -56,10 +56,4 @@ extern void arch_init_msi_domain(struct irq_domain *domain);
static inline void arch_init_msi_domain(struct irq_domain *domain) { }
#endif

-#ifdef CONFIG_HT_IRQ
-extern void arch_init_htirq_domain(struct irq_domain *domain);
-#else
-static inline void arch_init_htirq_domain(struct irq_domain *domain) { }
-#endif
-
#endif
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index 2db7cf720b04..cc16fa882e3e 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -132,6 +132,7 @@ struct cpuinfo_x86 {
/* Index into per_cpu list: */
u16 cpu_index;
u32 microcode;
+ unsigned initialized : 1;
} __randomize_layout;

struct cpuid_regs {
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index ef9e02e614d0..f4c463df8b08 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -342,13 +342,12 @@ acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long e
#ifdef CONFIG_X86_IO_APIC
#define MP_ISA_BUS 0

+static int __init mp_register_ioapic_irq(u8 bus_irq, u8 polarity,
+ u8 trigger, u32 gsi);
+
static void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger,
u32 gsi)
{
- int ioapic;
- int pin;
- struct mpc_intsrc mp_irq;
-
/*
* Check bus_irq boundary.
*/
@@ -357,14 +356,6 @@ static void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger,
return;
}

- /*
- * Convert 'gsi' to 'ioapic.pin'.
- */
- ioapic = mp_find_ioapic(gsi);
- if (ioapic < 0)
- return;
- pin = mp_find_ioapic_pin(ioapic, gsi);
-
/*
* TBD: This check is for faulty timer entries, where the override
* erroneously sets the trigger to level, resulting in a HUGE
@@ -373,16 +364,8 @@ static void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger,
if ((bus_irq == 0) && (trigger == 3))
trigger = 1;

- mp_irq.type = MP_INTSRC;
- mp_irq.irqtype = mp_INT;
- mp_irq.irqflag = (trigger << 2) | polarity;
- mp_irq.srcbus = MP_ISA_BUS;
- mp_irq.srcbusirq = bus_irq; /* IRQ */
- mp_irq.dstapic = mpc_ioapic_id(ioapic); /* APIC ID */
- mp_irq.dstirq = pin; /* INTIN# */
-
- mp_save_irq(&mp_irq);
-
+ if (mp_register_ioapic_irq(bus_irq, polarity, trigger, gsi) < 0)
+ return;
/*
* Reset default identity mapping if gsi is also an legacy IRQ,
* otherwise there will be more than one entry with the same GSI
@@ -429,6 +412,34 @@ static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger,
return 0;
}

+static int __init mp_register_ioapic_irq(u8 bus_irq, u8 polarity,
+ u8 trigger, u32 gsi)
+{
+ struct mpc_intsrc mp_irq;
+ int ioapic, pin;
+
+ /* Convert 'gsi' to 'ioapic.pin'(INTIN#) */
+ ioapic = mp_find_ioapic(gsi);
+ if (ioapic < 0) {
+ pr_warn("Failed to find ioapic for gsi : %u\n", gsi);
+ return ioapic;
+ }
+
+ pin = mp_find_ioapic_pin(ioapic, gsi);
+
+ mp_irq.type = MP_INTSRC;
+ mp_irq.irqtype = mp_INT;
+ mp_irq.irqflag = (trigger << 2) | polarity;
+ mp_irq.srcbus = MP_ISA_BUS;
+ mp_irq.srcbusirq = bus_irq;
+ mp_irq.dstapic = mpc_ioapic_id(ioapic);
+ mp_irq.dstirq = pin;
+
+ mp_save_irq(&mp_irq);
+
+ return 0;
+}
+
static int __init
acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end)
{
@@ -473,7 +484,11 @@ static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger,
if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK)
polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK;

- mp_override_legacy_irq(bus_irq, polarity, trigger, gsi);
+ if (bus_irq < NR_IRQS_LEGACY)
+ mp_override_legacy_irq(bus_irq, polarity, trigger, gsi);
+ else
+ mp_register_ioapic_irq(bus_irq, polarity, trigger, gsi);
+
acpi_penalize_sci_irq(bus_irq, trigger, polarity);

/*
diff --git a/arch/x86/kernel/apic/Makefile b/arch/x86/kernel/apic/Makefile
index a9e08924927e..a6fcaf16cdbf 100644
--- a/arch/x86/kernel/apic/Makefile
+++ b/arch/x86/kernel/apic/Makefile
@@ -12,7 +12,6 @@ obj-y += hw_nmi.o

obj-$(CONFIG_X86_IO_APIC) += io_apic.o
obj-$(CONFIG_PCI_MSI) += msi.o
-obj-$(CONFIG_HT_IRQ) += htirq.o
obj-$(CONFIG_SMP) += ipi.o

ifeq ($(CONFIG_X86_64),y)
diff --git a/arch/x86/kernel/apic/htirq.c b/arch/x86/kernel/apic/htirq.c
deleted file mode 100644
index b07075dce8b7..000000000000
--- a/arch/x86/kernel/apic/htirq.c
+++ /dev/null
@@ -1,198 +0,0 @@
-/*
- * Support Hypertransport IRQ
- *
- * Copyright (C) 1997, 1998, 1999, 2000, 2009 Ingo Molnar, Hajnalka Szabo
- * Moved from arch/x86/kernel/apic/io_apic.c.
- * Jiang Liu <jiang.liu@linux.intel.com>
- * Add support of hierarchical irqdomain
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/mm.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/device.h>
-#include <linux/pci.h>
-#include <linux/htirq.h>
-#include <asm/irqdomain.h>
-#include <asm/hw_irq.h>
-#include <asm/apic.h>
-#include <asm/hypertransport.h>
-
-static struct irq_domain *htirq_domain;
-
-/*
- * Hypertransport interrupt support
- */
-static int
-ht_set_affinity(struct irq_data *data, const struct cpumask *mask, bool force)
-{
- struct irq_data *parent = data->parent_data;
- int ret;
-
- ret = parent->chip->irq_set_affinity(parent, mask, force);
- if (ret >= 0) {
- struct ht_irq_msg msg;
- struct irq_cfg *cfg = irqd_cfg(data);
-
- fetch_ht_irq_msg(data->irq, &msg);
- msg.address_lo &= ~(HT_IRQ_LOW_VECTOR_MASK |
- HT_IRQ_LOW_DEST_ID_MASK);
- msg.address_lo |= HT_IRQ_LOW_VECTOR(cfg->vector) |
- HT_IRQ_LOW_DEST_ID(cfg->dest_apicid);
- msg.address_hi &= ~(HT_IRQ_HIGH_DEST_ID_MASK);
- msg.address_hi |= HT_IRQ_HIGH_DEST_ID(cfg->dest_apicid);
- write_ht_irq_msg(data->irq, &msg);
- }
-
- return ret;
-}
-
-static struct irq_chip ht_irq_chip = {
- .name = "PCI-HT",
- .irq_mask = mask_ht_irq,
- .irq_unmask = unmask_ht_irq,
- .irq_ack = irq_chip_ack_parent,
- .irq_set_affinity = ht_set_affinity,
- .irq_retrigger = irq_chip_retrigger_hierarchy,
- .flags = IRQCHIP_SKIP_SET_WAKE,
-};
-
-static int htirq_domain_alloc(struct irq_domain *domain, unsigned int virq,
- unsigned int nr_irqs, void *arg)
-{
- struct ht_irq_cfg *ht_cfg;
- struct irq_alloc_info *info = arg;
- struct pci_dev *dev;
- irq_hw_number_t hwirq;
- int ret;
-
- if (nr_irqs > 1 || !info)
- return -EINVAL;
-
- dev = info->ht_dev;
- hwirq = (info->ht_idx & 0xFF) |
- PCI_DEVID(dev->bus->number, dev->devfn) << 8 |
- (pci_domain_nr(dev->bus) & 0xFFFFFFFF) << 24;
- if (irq_find_mapping(domain, hwirq) > 0)
- return -EEXIST;
-
- ht_cfg = kmalloc(sizeof(*ht_cfg), GFP_KERNEL);
- if (!ht_cfg)
- return -ENOMEM;
-
- ret = irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, info);
- if (ret < 0) {
- kfree(ht_cfg);
- return ret;
- }
-
- /* Initialize msg to a value that will never match the first write. */
- ht_cfg->msg.address_lo = 0xffffffff;
- ht_cfg->msg.address_hi = 0xffffffff;
- ht_cfg->dev = info->ht_dev;
- ht_cfg->update = info->ht_update;
- ht_cfg->pos = info->ht_pos;
- ht_cfg->idx = 0x10 + (info->ht_idx * 2);
- irq_domain_set_info(domain, virq, hwirq, &ht_irq_chip, ht_cfg,
- handle_edge_irq, ht_cfg, "edge");
-
- return 0;
-}
-
-static void htirq_domain_free(struct irq_domain *domain, unsigned int virq,
- unsigned int nr_irqs)
-{
- struct irq_data *irq_data = irq_domain_get_irq_data(domain, virq);
-
- BUG_ON(nr_irqs != 1);
- kfree(irq_data->chip_data);
- irq_domain_free_irqs_top(domain, virq, nr_irqs);
-}
-
-static int htirq_domain_activate(struct irq_domain *domain,
- struct irq_data *irq_data, bool early)
-{
- struct ht_irq_msg msg;
- struct irq_cfg *cfg = irqd_cfg(irq_data);
-
- msg.address_hi = HT_IRQ_HIGH_DEST_ID(cfg->dest_apicid);
- msg.address_lo =
- HT_IRQ_LOW_BASE |
- HT_IRQ_LOW_DEST_ID(cfg->dest_apicid) |
- HT_IRQ_LOW_VECTOR(cfg->vector) |
- ((apic->irq_dest_mode == 0) ?
- HT_IRQ_LOW_DM_PHYSICAL :
- HT_IRQ_LOW_DM_LOGICAL) |
- HT_IRQ_LOW_RQEOI_EDGE |
- ((apic->irq_delivery_mode != dest_LowestPrio) ?
- HT_IRQ_LOW_MT_FIXED :
- HT_IRQ_LOW_MT_ARBITRATED) |
- HT_IRQ_LOW_IRQ_MASKED;
- write_ht_irq_msg(irq_data->irq, &msg);
- return 0;
-}
-
-static void htirq_domain_deactivate(struct irq_domain *domain,
- struct irq_data *irq_data)
-{
- struct ht_irq_msg msg;
-
- memset(&msg, 0, sizeof(msg));
- write_ht_irq_msg(irq_data->irq, &msg);
-}
-
-static const struct irq_domain_ops htirq_domain_ops = {
- .alloc = htirq_domain_alloc,
- .free = htirq_domain_free,
- .activate = htirq_domain_activate,
- .deactivate = htirq_domain_deactivate,
-};
-
-void __init arch_init_htirq_domain(struct irq_domain *parent)
-{
- struct fwnode_handle *fn;
-
- if (disable_apic)
- return;
-
- fn = irq_domain_alloc_named_fwnode("PCI-HT");
- if (!fn)
- goto warn;
-
- htirq_domain = irq_domain_create_tree(fn, &htirq_domain_ops, NULL);
- irq_domain_free_fwnode(fn);
- if (!htirq_domain)
- goto warn;
-
- htirq_domain->parent = parent;
- return;
-
-warn:
- pr_warn("Failed to initialize irqdomain for HTIRQ.\n");
-}
-
-int arch_setup_ht_irq(int idx, int pos, struct pci_dev *dev,
- ht_irq_update_t *update)
-{
- struct irq_alloc_info info;
-
- if (!htirq_domain)
- return -ENOSYS;
-
- init_irq_alloc_info(&info, NULL);
- info.ht_idx = idx;
- info.ht_pos = pos;
- info.ht_dev = dev;
- info.ht_update = update;
-
- return irq_domain_alloc_irqs(htirq_domain, 1, dev_to_node(&dev->dev),
- &info);
-}
-
-void arch_teardown_ht_irq(unsigned int irq)
-{
- irq_domain_free_irqs(irq, 1);
-}
diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c
index 05c85e693a5d..6a823a25eaff 100644
--- a/arch/x86/kernel/apic/vector.c
+++ b/arch/x86/kernel/apic/vector.c
@@ -1,5 +1,5 @@
/*
- * Local APIC related interfaces to support IOAPIC, MSI, HT_IRQ etc.
+ * Local APIC related interfaces to support IOAPIC, MSI, etc.
*
* Copyright (C) 1997, 1998, 1999, 2000, 2009 Ingo Molnar, Hajnalka Szabo
* Moved from arch/x86/kernel/apic/io_apic.c.
@@ -601,7 +601,7 @@ int __init arch_probe_nr_irqs(void)
nr_irqs = NR_VECTORS * nr_cpu_ids;

nr = (gsi_top + nr_legacy_irqs()) + 8 * nr_cpu_ids;
-#if defined(CONFIG_PCI_MSI) || defined(CONFIG_HT_IRQ)
+#if defined(CONFIG_PCI_MSI)
/*
* for MSI and HT dyn irq
*/
@@ -663,7 +663,6 @@ int __init arch_early_irq_init(void)
irq_set_default_host(x86_vector_domain);

arch_init_msi_domain(x86_vector_domain);
- arch_init_htirq_domain(x86_vector_domain);

BUG_ON(!alloc_cpumask_var(&vector_searchmask, GFP_KERNEL));

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 13ae9e5eec2f..fa998ca8aa5a 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -341,6 +341,8 @@ static __always_inline void setup_umip(struct cpuinfo_x86 *c)

cr4_set_bits(X86_CR4_UMIP);

+ pr_info("x86/cpu: Activated the Intel User Mode Instruction Prevention (UMIP) CPU feature\n");
+
return;

out:
diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c
index 410c5dadcee3..3a4b12809ab5 100644
--- a/arch/x86/kernel/mpparse.c
+++ b/arch/x86/kernel/mpparse.c
@@ -431,6 +431,7 @@ static inline void __init construct_default_ISA_mptable(int mpc_default_type)
}

static unsigned long mpf_base;
+static bool mpf_found;

static unsigned long __init get_mpc_size(unsigned long physptr)
{
@@ -504,7 +505,7 @@ void __init default_get_smp_config(unsigned int early)
if (!smp_found_config)
return;

- if (!mpf_base)
+ if (!mpf_found)
return;

if (acpi_lapic && early)
@@ -593,6 +594,7 @@ static int __init smp_scan_config(unsigned long base, unsigned long length)
smp_found_config = 1;
#endif
mpf_base = base;
+ mpf_found = true;

pr_info("found SMP MP-table at [mem %#010lx-%#010lx] mapped at [%p]\n",
base, base + sizeof(*mpf) - 1, mpf);
@@ -858,7 +860,7 @@ static int __init update_mp_table(void)
if (!enable_update_mptable)
return 0;

- if (!mpf_base)
+ if (!mpf_found)
return 0;

mpf = early_memremap(mpf_base, sizeof(*mpf));
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 5f59e6bee123..3d01df7d7cf6 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -101,9 +101,6 @@ DEFINE_PER_CPU_READ_MOSTLY(struct cpuinfo_x86, cpu_info);
EXPORT_PER_CPU_SYMBOL(cpu_info);

/* Logical package management. We might want to allocate that dynamically */
-static int *physical_to_logical_pkg __read_mostly;
-static unsigned long *physical_package_map __read_mostly;;
-static unsigned int max_physical_pkg_id __read_mostly;
unsigned int __max_logical_packages __read_mostly;
EXPORT_SYMBOL(__max_logical_packages);
static unsigned int logical_packages __read_mostly;
@@ -280,6 +277,25 @@ static void notrace start_secondary(void *unused)
cpu_startup_entry(CPUHP_AP_ONLINE_IDLE);
}

+/**
+ * topology_phys_to_logical_pkg - Map a physical package id to a logical
+ *
+ * Returns logical package id or -1 if not found
+ */
+int topology_phys_to_logical_pkg(unsigned int phys_pkg)
+{
+ int cpu;
+
+ for_each_possible_cpu(cpu) {
+ struct cpuinfo_x86 *c = &cpu_data(cpu);
+
+ if (c->initialized && c->phys_proc_id == phys_pkg)
+ return c->logical_proc_id;
+ }
+ return -1;
+}
+EXPORT_SYMBOL(topology_phys_to_logical_pkg);
+
/**
* topology_update_package_map - Update the physical to logical package map
* @pkg: The physical package id as retrieved via CPUID
@@ -287,102 +303,23 @@ static void notrace start_secondary(void *unused)
*/
int topology_update_package_map(unsigned int pkg, unsigned int cpu)
{
- unsigned int new;
+ int new;

- /* Called from early boot ? */
- if (!physical_package_map)
- return 0;
-
- if (pkg >= max_physical_pkg_id)
- return -EINVAL;
-
- /* Set the logical package id */
- if (test_and_set_bit(pkg, physical_package_map))
+ /* Already available somewhere? */
+ new = topology_phys_to_logical_pkg(pkg);
+ if (new >= 0)
goto found;

- if (logical_packages >= __max_logical_packages) {
- pr_warn("Package %u of CPU %u exceeds BIOS package data %u.\n",
- logical_packages, cpu, __max_logical_packages);
- return -ENOSPC;
- }
-
new = logical_packages++;
if (new != pkg) {
pr_info("CPU %u Converting physical %u to logical package %u\n",
cpu, pkg, new);
}
- physical_to_logical_pkg[pkg] = new;
-
found:
- cpu_data(cpu).logical_proc_id = physical_to_logical_pkg[pkg];
+ cpu_data(cpu).logical_proc_id = new;
return 0;
}

-/**
- * topology_phys_to_logical_pkg - Map a physical package id to a logical
- *
- * Returns logical package id or -1 if not found
- */
-int topology_phys_to_logical_pkg(unsigned int phys_pkg)
-{
- if (phys_pkg >= max_physical_pkg_id)
- return -1;
- return physical_to_logical_pkg[phys_pkg];
-}
-EXPORT_SYMBOL(topology_phys_to_logical_pkg);
-
-static void __init smp_init_package_map(struct cpuinfo_x86 *c, unsigned int cpu)
-{
- unsigned int ncpus;
- size_t size;
-
- /*
- * Today neither Intel nor AMD support heterogenous systems. That
- * might change in the future....
- *
- * While ideally we'd want '* smp_num_siblings' in the below @ncpus
- * computation, this won't actually work since some Intel BIOSes
- * report inconsistent HT data when they disable HT.
- *
- * In particular, they reduce the APIC-IDs to only include the cores,
- * but leave the CPUID topology to say there are (2) siblings.
- * This means we don't know how many threads there will be until
- * after the APIC enumeration.
- *
- * By not including this we'll sometimes over-estimate the number of
- * logical packages by the amount of !present siblings, but this is
- * still better than MAX_LOCAL_APIC.
- *
- * We use total_cpus not nr_cpu_ids because nr_cpu_ids can be limited
- * on the command line leading to a similar issue as the HT disable
- * problem because the hyperthreads are usually enumerated after the
- * primary cores.
- */
- ncpus = boot_cpu_data.x86_max_cores;
- if (!ncpus) {
- pr_warn("x86_max_cores == zero !?!?");
- ncpus = 1;
- }
-
- __max_logical_packages = DIV_ROUND_UP(total_cpus, ncpus);
- logical_packages = 0;
-
- /*
- * Possibly larger than what we need as the number of apic ids per
- * package can be smaller than the actual used apic ids.
- */
- max_physical_pkg_id = DIV_ROUND_UP(MAX_LOCAL_APIC, ncpus);
- size = max_physical_pkg_id * sizeof(unsigned int);
- physical_to_logical_pkg = kmalloc(size, GFP_KERNEL);
- memset(physical_to_logical_pkg, 0xff, size);
- size = BITS_TO_LONGS(max_physical_pkg_id) * sizeof(unsigned long);
- physical_package_map = kzalloc(size, GFP_KERNEL);
-
- pr_info("Max logical packages: %u\n", __max_logical_packages);
-
- topology_update_package_map(c->phys_proc_id, cpu);
-}
-
void __init smp_store_boot_cpu_info(void)
{
int id = 0; /* CPU 0 */
@@ -390,7 +327,8 @@ void __init smp_store_boot_cpu_info(void)

*c = boot_cpu_data;
c->cpu_index = id;
- smp_init_package_map(c, id);
+ topology_update_package_map(c->phys_proc_id, id);
+ c->initialized = true;
}

/*
@@ -401,13 +339,16 @@ void smp_store_cpu_info(int id)
{
struct cpuinfo_x86 *c = &cpu_data(id);

- *c = boot_cpu_data;
+ /* Copy boot_cpu_data only on the first bringup */
+ if (!c->initialized)
+ *c = boot_cpu_data;
c->cpu_index = id;
/*
* During boot time, CPU0 has this setup already. Save the info when
* bringing up AP or offlined CPU0.
*/
identify_secondary_cpu(c);
+ c->initialized = true;
}

static bool
@@ -1356,7 +1297,16 @@ void __init native_smp_prepare_boot_cpu(void)

void __init native_smp_cpus_done(unsigned int max_cpus)
{
+ int ncpus;
+
pr_debug("Boot done\n");
+ /*
+ * Today neither Intel nor AMD support heterogenous systems so
+ * extrapolate the boot cpu's data to all packages.
+ */
+ ncpus = cpu_data(0).booted_cores * smp_num_siblings;
+ __max_logical_packages = DIV_ROUND_UP(nr_cpu_ids, ncpus);
+ pr_info("Max logical packages: %u\n", __max_logical_packages);

if (x86_has_numa_in_package)
set_sched_topology(x86_numa_in_package_topology);
diff --git a/arch/x86/kernel/sys_x86_64.c b/arch/x86/kernel/sys_x86_64.c
index a63fe77b3217..676774b9bb8d 100644
--- a/arch/x86/kernel/sys_x86_64.c
+++ b/arch/x86/kernel/sys_x86_64.c
@@ -188,6 +188,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
if (len > TASK_SIZE)
return -ENOMEM;

+ /* No address checking. See comment at mmap_address_hint_valid() */
if (flags & MAP_FIXED)
return addr;

@@ -197,12 +198,15 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,

/* requesting a specific address */
if (addr) {
- addr = PAGE_ALIGN(addr);
+ addr &= PAGE_MASK;
+ if (!mmap_address_hint_valid(addr, len))
+ goto get_unmapped_area;
+
vma = find_vma(mm, addr);
- if (TASK_SIZE - len >= addr &&
- (!vma || addr + len <= vm_start_gap(vma)))
+ if (!vma || addr + len <= vm_start_gap(vma))
return addr;
}
+get_unmapped_area:

info.flags = VM_UNMAPPED_AREA_TOPDOWN;
info.length = len;
diff --git a/arch/x86/kernel/umip.c b/arch/x86/kernel/umip.c
index 6ba82be68cff..f44ce0fb3583 100644
--- a/arch/x86/kernel/umip.c
+++ b/arch/x86/kernel/umip.c
@@ -78,7 +78,60 @@

#define UMIP_INST_SGDT 0 /* 0F 01 /0 */
#define UMIP_INST_SIDT 1 /* 0F 01 /1 */
-#define UMIP_INST_SMSW 3 /* 0F 01 /4 */
+#define UMIP_INST_SMSW 2 /* 0F 01 /4 */
+#define UMIP_INST_SLDT 3 /* 0F 00 /0 */
+#define UMIP_INST_STR 4 /* 0F 00 /1 */
+
+const char * const umip_insns[5] = {
+ [UMIP_INST_SGDT] = "SGDT",
+ [UMIP_INST_SIDT] = "SIDT",
+ [UMIP_INST_SMSW] = "SMSW",
+ [UMIP_INST_SLDT] = "SLDT",
+ [UMIP_INST_STR] = "STR",
+};
+
+#define umip_pr_err(regs, fmt, ...) \
+ umip_printk(regs, KERN_ERR, fmt, ##__VA_ARGS__)
+#define umip_pr_warning(regs, fmt, ...) \
+ umip_printk(regs, KERN_WARNING, fmt, ##__VA_ARGS__)
+
+/**
+ * umip_printk() - Print a rate-limited message
+ * @regs: Register set with the context in which the warning is printed
+ * @log_level: Kernel log level to print the message
+ * @fmt: The text string to print
+ *
+ * Print the text contained in @fmt. The print rate is limited to bursts of 5
+ * messages every two minutes. The purpose of this customized version of
+ * printk() is to print messages when user space processes use any of the
+ * UMIP-protected instructions. Thus, the printed text is prepended with the
+ * task name and process ID number of the current task as well as the
+ * instruction and stack pointers in @regs as seen when entering kernel mode.
+ *
+ * Returns:
+ *
+ * None.
+ */
+static __printf(3, 4)
+void umip_printk(const struct pt_regs *regs, const char *log_level,
+ const char *fmt, ...)
+{
+ /* Bursts of 5 messages every two minutes */
+ static DEFINE_RATELIMIT_STATE(ratelimit, 2 * 60 * HZ, 5);
+ struct task_struct *tsk = current;
+ struct va_format vaf;
+ va_list args;
+
+ if (!__ratelimit(&ratelimit))
+ return;
+
+ va_start(args, fmt);
+ vaf.fmt = fmt;
+ vaf.va = &args;
+ printk("%s" pr_fmt("%s[%d] ip:%lx sp:%lx: %pV"), log_level, tsk->comm,
+ task_pid_nr(tsk), regs->ip, regs->sp, &vaf);
+ va_end(args);
+}

/**
* identify_insn() - Identify a UMIP-protected instruction
@@ -118,10 +171,16 @@ static int identify_insn(struct insn *insn)
default:
return -EINVAL;
}
+ } else if (insn->opcode.bytes[1] == 0x0) {
+ if (X86_MODRM_REG(insn->modrm.value) == 0)
+ return UMIP_INST_SLDT;
+ else if (X86_MODRM_REG(insn->modrm.value) == 1)
+ return UMIP_INST_STR;
+ else
+ return -EINVAL;
+ } else {
+ return -EINVAL;
}
-
- /* SLDT AND STR are not emulated */
- return -EINVAL;
}

/**
@@ -228,10 +287,8 @@ static void force_sig_info_umip_fault(void __user *addr, struct pt_regs *regs)
if (!(show_unhandled_signals && unhandled_signal(tsk, SIGSEGV)))
return;

- pr_err_ratelimited("%s[%d] umip emulation segfault ip:%lx sp:%lx error:%x in %lx\n",
- tsk->comm, task_pid_nr(tsk), regs->ip,
- regs->sp, X86_PF_USER | X86_PF_WRITE,
- regs->ip);
+ umip_pr_err(regs, "segfault in emulation. error%x\n",
+ X86_PF_USER | X86_PF_WRITE);
}

/**
@@ -262,15 +319,11 @@ bool fixup_umip_exception(struct pt_regs *regs)
unsigned char buf[MAX_INSN_SIZE];
void __user *uaddr;
struct insn insn;
- char seg_defs;
+ int seg_defs;

if (!regs)
return false;

- /* Do not emulate 64-bit processes. */
- if (user_64bit_mode(regs))
- return false;
-
/*
* If not in user-space long mode, a custom code segment could be in
* use. This is true in protected mode (if the process defined a local
@@ -322,6 +375,15 @@ bool fixup_umip_exception(struct pt_regs *regs)
if (umip_inst < 0)
return false;

+ umip_pr_warning(regs, "%s instruction cannot be used by applications.\n",
+ umip_insns[umip_inst]);
+
+ /* Do not emulate SLDT, STR or user long mode processes. */
+ if (umip_inst == UMIP_INST_STR || umip_inst == UMIP_INST_SLDT || user_64bit_mode(regs))
+ return false;
+
+ umip_pr_warning(regs, "For now, expensive software emulation returns the result.\n");
+
if (emulate_umip_insn(&insn, umip_inst, dummy_data, &dummy_data_size))
return false;

diff --git a/arch/x86/lib/insn-eval.c b/arch/x86/lib/insn-eval.c
index 35625d279458..9119d8e41f1f 100644
--- a/arch/x86/lib/insn-eval.c
+++ b/arch/x86/lib/insn-eval.c
@@ -733,11 +733,11 @@ static unsigned long get_seg_limit(struct pt_regs *regs, int seg_reg_idx)
*
* Returns:
*
- * A signed 8-bit value containing the default parameters on success.
+ * An int containing ORed-in default parameters on success.
*
* -EINVAL on error.
*/
-char insn_get_code_seg_params(struct pt_regs *regs)
+int insn_get_code_seg_params(struct pt_regs *regs)
{
struct desc_struct *desc;
short sel;
diff --git a/arch/x86/lib/x86-opcode-map.txt b/arch/x86/lib/x86-opcode-map.txt
index 12e377184ee4..c4d55919fac1 100644
--- a/arch/x86/lib/x86-opcode-map.txt
+++ b/arch/x86/lib/x86-opcode-map.txt
@@ -896,7 +896,7 @@ EndTable

GrpTable: Grp3_1
0: TEST Eb,Ib
-1:
+1: TEST Eb,Ib
2: NOT Eb
3: NEG Eb
4: MUL AL,Eb
diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c
index 8ae0000cbdb3..00b296617ca4 100644
--- a/arch/x86/mm/hugetlbpage.c
+++ b/arch/x86/mm/hugetlbpage.c
@@ -158,6 +158,7 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
if (len > TASK_SIZE)
return -ENOMEM;

+ /* No address checking. See comment at mmap_address_hint_valid() */
if (flags & MAP_FIXED) {
if (prepare_hugepage_range(file, addr, len))
return -EINVAL;
@@ -165,12 +166,16 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
}

if (addr) {
- addr = ALIGN(addr, huge_page_size(h));
+ addr &= huge_page_mask(h);
+ if (!mmap_address_hint_valid(addr, len))
+ goto get_unmapped_area;
+
vma = find_vma(mm, addr);
- if (TASK_SIZE - len >= addr &&
- (!vma || addr + len <= vm_start_gap(vma)))
+ if (!vma || addr + len <= vm_start_gap(vma))
return addr;
}
+
+get_unmapped_area:
if (mm->get_unmapped_area == arch_get_unmapped_area)
return hugetlb_get_unmapped_area_bottomup(file, addr, len,
pgoff, flags);
diff --git a/arch/x86/mm/kasan_init_64.c b/arch/x86/mm/kasan_init_64.c
index 2b60dc6e64b1..99dfed6dfef8 100644
--- a/arch/x86/mm/kasan_init_64.c
+++ b/arch/x86/mm/kasan_init_64.c
@@ -4,12 +4,14 @@
#include <linux/bootmem.h>
#include <linux/kasan.h>
#include <linux/kdebug.h>
+#include <linux/memblock.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/sched/task.h>
#include <linux/vmalloc.h>

#include <asm/e820/types.h>
+#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
#include <asm/sections.h>
#include <asm/pgtable.h>
@@ -18,7 +20,134 @@ extern struct range pfn_mapped[E820_MAX_ENTRIES];

static p4d_t tmp_p4d_table[PTRS_PER_P4D] __initdata __aligned(PAGE_SIZE);

-static int __init map_range(struct range *range)
+static __init void *early_alloc(size_t size, int nid)
+{
+ return memblock_virt_alloc_try_nid_nopanic(size, size,
+ __pa(MAX_DMA_ADDRESS), BOOTMEM_ALLOC_ACCESSIBLE, nid);
+}
+
+static void __init kasan_populate_pmd(pmd_t *pmd, unsigned long addr,
+ unsigned long end, int nid)
+{
+ pte_t *pte;
+
+ if (pmd_none(*pmd)) {
+ void *p;
+
+ if (boot_cpu_has(X86_FEATURE_PSE) &&
+ ((end - addr) == PMD_SIZE) &&
+ IS_ALIGNED(addr, PMD_SIZE)) {
+ p = early_alloc(PMD_SIZE, nid);
+ if (p && pmd_set_huge(pmd, __pa(p), PAGE_KERNEL))
+ return;
+ else if (p)
+ memblock_free(__pa(p), PMD_SIZE);
+ }
+
+ p = early_alloc(PAGE_SIZE, nid);
+ pmd_populate_kernel(&init_mm, pmd, p);
+ }
+
+ pte = pte_offset_kernel(pmd, addr);
+ do {
+ pte_t entry;
+ void *p;
+
+ if (!pte_none(*pte))
+ continue;
+
+ p = early_alloc(PAGE_SIZE, nid);
+ entry = pfn_pte(PFN_DOWN(__pa(p)), PAGE_KERNEL);
+ set_pte_at(&init_mm, addr, pte, entry);
+ } while (pte++, addr += PAGE_SIZE, addr != end);
+}
+
+static void __init kasan_populate_pud(pud_t *pud, unsigned long addr,
+ unsigned long end, int nid)
+{
+ pmd_t *pmd;
+ unsigned long next;
+
+ if (pud_none(*pud)) {
+ void *p;
+
+ if (boot_cpu_has(X86_FEATURE_GBPAGES) &&
+ ((end - addr) == PUD_SIZE) &&
+ IS_ALIGNED(addr, PUD_SIZE)) {
+ p = early_alloc(PUD_SIZE, nid);
+ if (p && pud_set_huge(pud, __pa(p), PAGE_KERNEL))
+ return;
+ else if (p)
+ memblock_free(__pa(p), PUD_SIZE);
+ }
+
+ p = early_alloc(PAGE_SIZE, nid);
+ pud_populate(&init_mm, pud, p);
+ }
+
+ pmd = pmd_offset(pud, addr);
+ do {
+ next = pmd_addr_end(addr, end);
+ if (!pmd_large(*pmd))
+ kasan_populate_pmd(pmd, addr, next, nid);
+ } while (pmd++, addr = next, addr != end);
+}
+
+static void __init kasan_populate_p4d(p4d_t *p4d, unsigned long addr,
+ unsigned long end, int nid)
+{
+ pud_t *pud;
+ unsigned long next;
+
+ if (p4d_none(*p4d)) {
+ void *p = early_alloc(PAGE_SIZE, nid);
+
+ p4d_populate(&init_mm, p4d, p);
+ }
+
+ pud = pud_offset(p4d, addr);
+ do {
+ next = pud_addr_end(addr, end);
+ if (!pud_large(*pud))
+ kasan_populate_pud(pud, addr, next, nid);
+ } while (pud++, addr = next, addr != end);
+}
+
+static void __init kasan_populate_pgd(pgd_t *pgd, unsigned long addr,
+ unsigned long end, int nid)
+{
+ void *p;
+ p4d_t *p4d;
+ unsigned long next;
+
+ if (pgd_none(*pgd)) {
+ p = early_alloc(PAGE_SIZE, nid);
+ pgd_populate(&init_mm, pgd, p);
+ }
+
+ p4d = p4d_offset(pgd, addr);
+ do {
+ next = p4d_addr_end(addr, end);
+ kasan_populate_p4d(p4d, addr, next, nid);
+ } while (p4d++, addr = next, addr != end);
+}
+
+static void __init kasan_populate_shadow(unsigned long addr, unsigned long end,
+ int nid)
+{
+ pgd_t *pgd;
+ unsigned long next;
+
+ addr = addr & PAGE_MASK;
+ end = round_up(end, PAGE_SIZE);
+ pgd = pgd_offset_k(addr);
+ do {
+ next = pgd_addr_end(addr, end);
+ kasan_populate_pgd(pgd, addr, next, nid);
+ } while (pgd++, addr = next, addr != end);
+}
+
+static void __init map_range(struct range *range)
{
unsigned long start;
unsigned long end;
@@ -26,7 +155,7 @@ static int __init map_range(struct range *range)
start = (unsigned long)kasan_mem_to_shadow(pfn_to_kaddr(range->start));
end = (unsigned long)kasan_mem_to_shadow(pfn_to_kaddr(range->end));

- return vmemmap_populate(start, end, NUMA_NO_NODE);
+ kasan_populate_shadow(start, end, early_pfn_to_nid(range->start));
}

static void __init clear_pgds(unsigned long start,
@@ -189,16 +318,16 @@ void __init kasan_init(void)
if (pfn_mapped[i].end == 0)
break;

- if (map_range(&pfn_mapped[i]))
- panic("kasan: unable to allocate shadow!");
+ map_range(&pfn_mapped[i]);
}
+
kasan_populate_zero_shadow(
kasan_mem_to_shadow((void *)PAGE_OFFSET + MAXMEM),
kasan_mem_to_shadow((void *)__START_KERNEL_map));

- vmemmap_populate((unsigned long)kasan_mem_to_shadow(_stext),
- (unsigned long)kasan_mem_to_shadow(_end),
- NUMA_NO_NODE);
+ kasan_populate_shadow((unsigned long)kasan_mem_to_shadow(_stext),
+ (unsigned long)kasan_mem_to_shadow(_end),
+ early_pfn_to_nid(__pa(_stext)));

kasan_populate_zero_shadow(kasan_mem_to_shadow((void *)MODULES_END),
(void *)KASAN_SHADOW_END);
diff --git a/arch/x86/mm/mmap.c b/arch/x86/mm/mmap.c
index a99679826846..155ecbac9e28 100644
--- a/arch/x86/mm/mmap.c
+++ b/arch/x86/mm/mmap.c
@@ -33,6 +33,8 @@
#include <linux/compat.h>
#include <asm/elf.h>

+#include "physaddr.h"
+
struct va_alignment __read_mostly va_align = {
.flags = -1,
};
@@ -174,3 +176,63 @@ const char *arch_vma_name(struct vm_area_struct *vma)
return "[mpx]";
return NULL;
}
+
+/**
+ * mmap_address_hint_valid - Validate the address hint of mmap
+ * @addr: Address hint
+ * @len: Mapping length
+ *
+ * Check whether @addr and @addr + @len result in a valid mapping.
+ *
+ * On 32bit this only checks whether @addr + @len is <= TASK_SIZE.
+ *
+ * On 64bit with 5-level page tables another sanity check is required
+ * because mappings requested by mmap(@addr, 0) which cross the 47-bit
+ * virtual address boundary can cause the following theoretical issue:
+ *
+ * An application calls mmap(addr, 0), i.e. without MAP_FIXED, where @addr
+ * is below the border of the 47-bit address space and @addr + @len is
+ * above the border.
+ *
+ * With 4-level paging this request succeeds, but the resulting mapping
+ * address will always be within the 47-bit virtual address space, because
+ * the hint address does not result in a valid mapping and is
+ * ignored. Hence applications which are not prepared to handle virtual
+ * addresses above 47-bit work correctly.
+ *
+ * With 5-level paging this request would be granted and result in a
+ * mapping which crosses the border of the 47-bit virtual address
+ * space. If the application cannot handle addresses above 47-bit this
+ * will lead to misbehaviour and hard to diagnose failures.
+ *
+ * Therefore ignore address hints which would result in a mapping crossing
+ * the 47-bit virtual address boundary.
+ *
+ * Note, that in the same scenario with MAP_FIXED the behaviour is
+ * different. The request with @addr < 47-bit and @addr + @len > 47-bit
+ * fails on a 4-level paging machine but succeeds on a 5-level paging
+ * machine. It is reasonable to expect that an application does not rely on
+ * the failure of such a fixed mapping request, so the restriction is not
+ * applied.
+ */
+bool mmap_address_hint_valid(unsigned long addr, unsigned long len)
+{
+ if (TASK_SIZE - len < addr)
+ return false;
+
+ return (addr > DEFAULT_MAP_WINDOW) == (addr + len > DEFAULT_MAP_WINDOW);
+}
+
+/* Can we access it for direct reading/writing? Must be RAM: */
+int valid_phys_addr_range(phys_addr_t addr, size_t count)
+{
+ return addr + count <= __pa(high_memory);
+}
+
+/* Can we access it through mmap? Must be a valid physical address: */
+int valid_mmap_phys_addr_range(unsigned long pfn, size_t count)
+{
+ phys_addr_t addr = (phys_addr_t)pfn << PAGE_SHIFT;
+
+ return phys_addr_valid(addr + count - 1);
+}
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 970e1242a282..6aefe5370e5b 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -343,6 +343,10 @@ static int mmap_mem(struct file *file, struct vm_area_struct *vma)
size_t size = vma->vm_end - vma->vm_start;
phys_addr_t offset = (phys_addr_t)vma->vm_pgoff << PAGE_SHIFT;

+ /* Does it even fit in phys_addr_t? */
+ if (offset >> PAGE_SHIFT != vma->vm_pgoff)
+ return -EINVAL;
+
/* It's illegal to wrap around the end of the physical address space. */
if (offset + (phys_addr_t)size - 1 < offset)
return -EINVAL;
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index c32a77fc8b03..99ae5e30eabe 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -71,15 +71,6 @@ config XEN_PCIDEV_FRONTEND
The PCI device frontend driver allows the kernel to import arbitrary
PCI devices from a PCI backend to support PCI driver domains.

-config HT_IRQ
- bool "Interrupts on hypertransport devices"
- default y
- depends on PCI && X86_LOCAL_APIC
- help
- This allows native hypertransport devices to use interrupts.
-
- If unsure say Y.
-
config PCI_ATS
bool

diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index 80adbdbcecce..ab0104e0ffac 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile
@@ -24,9 +24,6 @@ endif
# Build the PCI MSI interrupt support
obj-$(CONFIG_PCI_MSI) += msi.o

-# Build the Hypertransport interrupt support
-obj-$(CONFIG_HT_IRQ) += htirq.o
-
obj-$(CONFIG_PCI_ATS) += ats.o
obj-$(CONFIG_PCI_IOV) += iov.o

diff --git a/drivers/pci/htirq.c b/drivers/pci/htirq.c
deleted file mode 100644
index bb88c26f5144..000000000000
--- a/drivers/pci/htirq.c
+++ /dev/null
@@ -1,135 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * File: htirq.c
- * Purpose: Hypertransport Interrupt Capability
- *
- * Copyright (C) 2006 Linux Networx
- * Copyright (C) Eric Biederman <ebiederman@lnxi.com>
- */
-
-#include <linux/irq.h>
-#include <linux/pci.h>
-#include <linux/spinlock.h>
-#include <linux/export.h>
-#include <linux/slab.h>
-#include <linux/htirq.h>
-
-/* Global ht irq lock.
- *
- * This is needed to serialize access to the data port in hypertransport
- * irq capability.
- *
- * With multiple simultaneous hypertransport irq devices it might pay
- * to make this more fine grained. But start with simple, stupid, and correct.
- */
-static DEFINE_SPINLOCK(ht_irq_lock);
-
-void write_ht_irq_msg(unsigned int irq, struct ht_irq_msg *msg)
-{
- struct ht_irq_cfg *cfg = irq_get_handler_data(irq);
- unsigned long flags;
-
- spin_lock_irqsave(&ht_irq_lock, flags);
- if (cfg->msg.address_lo != msg->address_lo) {
- pci_write_config_byte(cfg->dev, cfg->pos + 2, cfg->idx);
- pci_write_config_dword(cfg->dev, cfg->pos + 4, msg->address_lo);
- }
- if (cfg->msg.address_hi != msg->address_hi) {
- pci_write_config_byte(cfg->dev, cfg->pos + 2, cfg->idx + 1);
- pci_write_config_dword(cfg->dev, cfg->pos + 4, msg->address_hi);
- }
- if (cfg->update)
- cfg->update(cfg->dev, irq, msg);
- spin_unlock_irqrestore(&ht_irq_lock, flags);
- cfg->msg = *msg;
-}
-
-void fetch_ht_irq_msg(unsigned int irq, struct ht_irq_msg *msg)
-{
- struct ht_irq_cfg *cfg = irq_get_handler_data(irq);
-
- *msg = cfg->msg;
-}
-
-void mask_ht_irq(struct irq_data *data)
-{
- struct ht_irq_cfg *cfg = irq_data_get_irq_handler_data(data);
- struct ht_irq_msg msg = cfg->msg;
-
- msg.address_lo |= 1;
- write_ht_irq_msg(data->irq, &msg);
-}
-
-void unmask_ht_irq(struct irq_data *data)
-{
- struct ht_irq_cfg *cfg = irq_data_get_irq_handler_data(data);
- struct ht_irq_msg msg = cfg->msg;
-
- msg.address_lo &= ~1;
- write_ht_irq_msg(data->irq, &msg);
-}
-
-/**
- * __ht_create_irq - create an irq and attach it to a device.
- * @dev: The hypertransport device to find the irq capability on.
- * @idx: Which of the possible irqs to attach to.
- * @update: Function to be called when changing the htirq message
- *
- * The irq number of the new irq or a negative error value is returned.
- */
-int __ht_create_irq(struct pci_dev *dev, int idx, ht_irq_update_t *update)
-{
- int max_irq, pos, irq;
- unsigned long flags;
- u32 data;
-
- pos = pci_find_ht_capability(dev, HT_CAPTYPE_IRQ);
- if (!pos)
- return -EINVAL;
-
- /* Verify the idx I want to use is in range */
- spin_lock_irqsave(&ht_irq_lock, flags);
- pci_write_config_byte(dev, pos + 2, 1);
- pci_read_config_dword(dev, pos + 4, &data);
- spin_unlock_irqrestore(&ht_irq_lock, flags);
-
- max_irq = (data >> 16) & 0xff;
- if (idx > max_irq)
- return -EINVAL;
-
- irq = arch_setup_ht_irq(idx, pos, dev, update);
- if (irq > 0)
- dev_dbg(&dev->dev, "irq %d for HT\n", irq);
-
- return irq;
-}
-EXPORT_SYMBOL(__ht_create_irq);
-
-/**
- * ht_create_irq - create an irq and attach it to a device.
- * @dev: The hypertransport device to find the irq capability on.
- * @idx: Which of the possible irqs to attach to.
- *
- * ht_create_irq needs to be called for all hypertransport devices
- * that generate irqs.
- *
- * The irq number of the new irq or a negative error value is returned.
- */
-int ht_create_irq(struct pci_dev *dev, int idx)
-{
- return __ht_create_irq(dev, idx, NULL);
-}
-EXPORT_SYMBOL(ht_create_irq);
-
-/**
- * ht_destroy_irq - destroy an irq created with ht_create_irq
- * @irq: irq to be destroyed
- *
- * This reverses ht_create_irq removing the specified irq from
- * existence. The irq should be free before this happens.
- */
-void ht_destroy_irq(unsigned int irq)
-{
- arch_teardown_ht_irq(irq);
-}
-EXPORT_SYMBOL(ht_destroy_irq);
diff --git a/include/linux/htirq.h b/include/linux/htirq.h
deleted file mode 100644
index 127c39d815ba..000000000000
--- a/include/linux/htirq.h
+++ /dev/null
@@ -1,39 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef LINUX_HTIRQ_H
-#define LINUX_HTIRQ_H
-
-struct pci_dev;
-struct irq_data;
-
-struct ht_irq_msg {
- u32 address_lo; /* low 32 bits of the ht irq message */
- u32 address_hi; /* high 32 bits of the it irq message */
-};
-
-typedef void (ht_irq_update_t)(struct pci_dev *dev, int irq,
- struct ht_irq_msg *msg);
-
-struct ht_irq_cfg {
- struct pci_dev *dev;
- /* Update callback used to cope with buggy hardware */
- ht_irq_update_t *update;
- unsigned pos;
- unsigned idx;
- struct ht_irq_msg msg;
-};
-
-/* Helper functions.. */
-void fetch_ht_irq_msg(unsigned int irq, struct ht_irq_msg *msg);
-void write_ht_irq_msg(unsigned int irq, struct ht_irq_msg *msg);
-void mask_ht_irq(struct irq_data *data);
-void unmask_ht_irq(struct irq_data *data);
-
-/* The arch hook for getting things started */
-int arch_setup_ht_irq(int idx, int pos, struct pci_dev *dev,
- ht_irq_update_t *update);
-void arch_teardown_ht_irq(unsigned int irq);
-
-/* For drivers of buggy hardware */
-int __ht_create_irq(struct pci_dev *dev, int idx, ht_irq_update_t *update);
-
-#endif /* LINUX_HTIRQ_H */
diff --git a/include/linux/pci.h b/include/linux/pci.h
index d16a7c037ec0..16287684dfe8 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1484,12 +1484,6 @@ static inline void pcie_set_ecrc_checking(struct pci_dev *dev) { }
static inline void pcie_ecrc_get_policy(char *str) { }
#endif

-#ifdef CONFIG_HT_IRQ
-/* The functions a driver should call */
-int ht_create_irq(struct pci_dev *dev, int idx);
-void ht_destroy_irq(unsigned int irq);
-#endif /* CONFIG_HT_IRQ */
-
#ifdef CONFIG_PCI_ATS
/* Address Translation Service */
void pci_ats_init(struct pci_dev *dev);
diff --git a/tools/testing/selftests/x86/5lvl.c b/tools/testing/selftests/x86/5lvl.c
new file mode 100644
index 000000000000..2eafdcd4c2b3
--- /dev/null
+++ b/tools/testing/selftests/x86/5lvl.c
@@ -0,0 +1,177 @@
+#include <stdio.h>
+#include <sys/mman.h>
+
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+
+#define PAGE_SIZE 4096
+#define LOW_ADDR ((void *) (1UL << 30))
+#define HIGH_ADDR ((void *) (1UL << 50))
+
+struct testcase {
+ void *addr;
+ unsigned long size;
+ unsigned long flags;
+ const char *msg;
+ unsigned int low_addr_required:1;
+ unsigned int keep_mapped:1;
+};
+
+static struct testcase testcases[] = {
+ {
+ .addr = NULL,
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(NULL)",
+ .low_addr_required = 1,
+ },
+ {
+ .addr = LOW_ADDR,
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(LOW_ADDR)",
+ .low_addr_required = 1,
+ },
+ {
+ .addr = HIGH_ADDR,
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(HIGH_ADDR)",
+ .keep_mapped = 1,
+ },
+ {
+ .addr = HIGH_ADDR,
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(HIGH_ADDR) again",
+ .keep_mapped = 1,
+ },
+ {
+ .addr = HIGH_ADDR,
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED,
+ .msg = "mmap(HIGH_ADDR, MAP_FIXED)",
+ },
+ {
+ .addr = (void*) -1,
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(-1)",
+ .keep_mapped = 1,
+ },
+ {
+ .addr = (void*) -1,
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(-1) again",
+ },
+ {
+ .addr = (void *)((1UL << 47) - PAGE_SIZE),
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap((1UL << 47), 2 * PAGE_SIZE)",
+ .low_addr_required = 1,
+ .keep_mapped = 1,
+ },
+ {
+ .addr = (void *)((1UL << 47) - PAGE_SIZE / 2),
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap((1UL << 47), 2 * PAGE_SIZE / 2)",
+ .low_addr_required = 1,
+ .keep_mapped = 1,
+ },
+ {
+ .addr = (void *)((1UL << 47) - PAGE_SIZE),
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED,
+ .msg = "mmap((1UL << 47) - PAGE_SIZE, 2 * PAGE_SIZE, MAP_FIXED)",
+ },
+ {
+ .addr = NULL,
+ .size = 2UL << 20,
+ .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(NULL, MAP_HUGETLB)",
+ .low_addr_required = 1,
+ },
+ {
+ .addr = LOW_ADDR,
+ .size = 2UL << 20,
+ .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(LOW_ADDR, MAP_HUGETLB)",
+ .low_addr_required = 1,
+ },
+ {
+ .addr = HIGH_ADDR,
+ .size = 2UL << 20,
+ .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(HIGH_ADDR, MAP_HUGETLB)",
+ .keep_mapped = 1,
+ },
+ {
+ .addr = HIGH_ADDR,
+ .size = 2UL << 20,
+ .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(HIGH_ADDR, MAP_HUGETLB) again",
+ .keep_mapped = 1,
+ },
+ {
+ .addr = HIGH_ADDR,
+ .size = 2UL << 20,
+ .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED,
+ .msg = "mmap(HIGH_ADDR, MAP_FIXED | MAP_HUGETLB)",
+ },
+ {
+ .addr = (void*) -1,
+ .size = 2UL << 20,
+ .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(-1, MAP_HUGETLB)",
+ .keep_mapped = 1,
+ },
+ {
+ .addr = (void*) -1,
+ .size = 2UL << 20,
+ .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(-1, MAP_HUGETLB) again",
+ },
+ {
+ .addr = (void *)((1UL << 47) - PAGE_SIZE),
+ .size = 4UL << 20,
+ .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap((1UL << 47), 4UL << 20, MAP_HUGETLB)",
+ .low_addr_required = 1,
+ .keep_mapped = 1,
+ },
+ {
+ .addr = (void *)((1UL << 47) - (2UL << 20)),
+ .size = 4UL << 20,
+ .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED,
+ .msg = "mmap((1UL << 47) - (2UL << 20), 4UL << 20, MAP_FIXED | MAP_HUGETLB)",
+ },
+};
+
+int main(int argc, char **argv)
+{
+ int i;
+ void *p;
+
+ for (i = 0; i < ARRAY_SIZE(testcases); i++) {
+ struct testcase *t = testcases + i;
+
+ p = mmap(t->addr, t->size, PROT_NONE, t->flags, -1, 0);
+
+ printf("%s: %p - ", t->msg, p);
+
+ if (p == MAP_FAILED) {
+ printf("FAILED\n");
+ continue;
+ }
+
+ if (t->low_addr_required && p >= (void *)(1UL << 47))
+ printf("FAILED\n");
+ else
+ printf("OK\n");
+ if (!t->keep_mapped)
+ munmap(p, t->size);
+ }
+ return 0;
+}
diff --git a/tools/testing/selftests/x86/Makefile b/tools/testing/selftests/x86/Makefile
index 7b1adeee4b0f..939a337128db 100644
--- a/tools/testing/selftests/x86/Makefile
+++ b/tools/testing/selftests/x86/Makefile
@@ -11,7 +11,7 @@ TARGETS_C_BOTHBITS := single_step_syscall sysret_ss_attrs syscall_nt ptrace_sysc
TARGETS_C_32BIT_ONLY := entry_from_vm86 syscall_arg_fault test_syscall_vdso unwind_vdso \
test_FCMOV test_FCOMI test_FISTTP \
vdso_restorer
-TARGETS_C_64BIT_ONLY := fsgsbase sysret_rip
+TARGETS_C_64BIT_ONLY := fsgsbase sysret_rip 5lvl

TARGETS_C_32BIT_ALL := $(TARGETS_C_BOTHBITS) $(TARGETS_C_32BIT_ONLY)
TARGETS_C_64BIT_ALL := $(TARGETS_C_BOTHBITS) $(TARGETS_C_64BIT_ONLY)
diff --git a/tools/testing/selftests/x86/mpx-hw.h b/tools/testing/selftests/x86/mpx-hw.h
index 3f0093911f03..d1b61ab870f8 100644
--- a/tools/testing/selftests/x86/mpx-hw.h
+++ b/tools/testing/selftests/x86/mpx-hw.h
@@ -52,14 +52,14 @@
struct mpx_bd_entry {
union {
char x[MPX_BOUNDS_DIR_ENTRY_SIZE_BYTES];
- void *contents[1];
+ void *contents[0];
};
} __attribute__((packed));

struct mpx_bt_entry {
union {
char x[MPX_BOUNDS_TABLE_ENTRY_SIZE_BYTES];
- unsigned long contents[1];
+ unsigned long contents[0];
};
} __attribute__((packed));

diff --git a/tools/testing/selftests/x86/pkey-helpers.h b/tools/testing/selftests/x86/pkey-helpers.h
index 3818f25391c2..b3cb7670e026 100644
--- a/tools/testing/selftests/x86/pkey-helpers.h
+++ b/tools/testing/selftests/x86/pkey-helpers.h
@@ -30,6 +30,7 @@ static inline void sigsafe_printf(const char *format, ...)
if (!dprint_in_signal) {
vprintf(format, ap);
} else {
+ int ret;
int len = vsnprintf(dprint_in_signal_buffer,
DPRINT_IN_SIGNAL_BUF_SIZE,
format, ap);
@@ -39,7 +40,9 @@ static inline void sigsafe_printf(const char *format, ...)
*/
if (len > DPRINT_IN_SIGNAL_BUF_SIZE)
len = DPRINT_IN_SIGNAL_BUF_SIZE;
- write(1, dprint_in_signal_buffer, len);
+ ret = write(1, dprint_in_signal_buffer, len);
+ if (ret < 0)
+ abort();
}
va_end(ap);
}
diff --git a/tools/testing/selftests/x86/protection_keys.c b/tools/testing/selftests/x86/protection_keys.c
index 7a1cc0e56d2d..bc1b0735bb50 100644
--- a/tools/testing/selftests/x86/protection_keys.c
+++ b/tools/testing/selftests/x86/protection_keys.c
@@ -250,7 +250,7 @@ void signal_handler(int signum, siginfo_t *si, void *vucontext)
unsigned long ip;
char *fpregs;
u32 *pkru_ptr;
- u64 si_pkey;
+ u64 siginfo_pkey;
u32 *si_pkey_ptr;
int pkru_offset;
fpregset_t fpregset;
@@ -292,9 +292,9 @@ void signal_handler(int signum, siginfo_t *si, void *vucontext)
si_pkey_ptr = (u32 *)(((u8 *)si) + si_pkey_offset);
dprintf1("si_pkey_ptr: %p\n", si_pkey_ptr);
dump_mem(si_pkey_ptr - 8, 24);
- si_pkey = *si_pkey_ptr;
- pkey_assert(si_pkey < NR_PKEYS);
- last_si_pkey = si_pkey;
+ siginfo_pkey = *si_pkey_ptr;
+ pkey_assert(siginfo_pkey < NR_PKEYS);
+ last_si_pkey = siginfo_pkey;

if ((si->si_code == SEGV_MAPERR) ||
(si->si_code == SEGV_ACCERR) ||
@@ -306,7 +306,7 @@ void signal_handler(int signum, siginfo_t *si, void *vucontext)
dprintf1("signal pkru from xsave: %08x\n", *pkru_ptr);
/* need __rdpkru() version so we do not do shadow_pkru checking */
dprintf1("signal pkru from pkru: %08x\n", __rdpkru());
- dprintf1("si_pkey from siginfo: %jx\n", si_pkey);
+ dprintf1("pkey from siginfo: %jx\n", siginfo_pkey);
*(u64 *)pkru_ptr = 0x00000000;
dprintf1("WARNING: set PRKU=0 to allow faulting instruction to continue\n");
pkru_faults++;