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-rw-r--r--arch/x86/include/asm/acpi.h2
-rw-r--r--arch/x86/include/asm/efi.h10
-rw-r--r--arch/x86/include/asm/entry-common.h12
-rw-r--r--arch/x86/include/asm/frame.h19
-rw-r--r--arch/x86/include/asm/idtentry.h2
-rw-r--r--arch/x86/include/asm/irq_stack.h69
-rw-r--r--arch/x86/include/asm/kvm_host.h3
-rw-r--r--arch/x86/include/asm/mmu.h1
-rw-r--r--arch/x86/include/asm/ptrace.h2
9 files changed, 95 insertions, 25 deletions
diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h
index ca0976456a6b..6d2df1ee427b 100644
--- a/arch/x86/include/asm/acpi.h
+++ b/arch/x86/include/asm/acpi.h
@@ -159,8 +159,6 @@ static inline u64 x86_default_get_root_pointer(void)
extern int x86_acpi_numa_init(void);
#endif /* CONFIG_ACPI_NUMA */
-#define acpi_unlazy_tlb(x) leave_mm(x)
-
#ifdef CONFIG_ACPI_APEI
static inline pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr)
{
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index b9c2667ac46c..bc9758ef292e 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -81,11 +81,8 @@ extern unsigned long efi_fw_vendor, efi_config_table;
kernel_fpu_end(); \
})
-
#define arch_efi_call_virt(p, f, args...) p->f(args)
-#define efi_ioremap(addr, size, type, attr) ioremap_cache(addr, size)
-
#else /* !CONFIG_X86_32 */
#define EFI_LOADER_SIGNATURE "EL64"
@@ -125,9 +122,6 @@ struct efi_scratch {
kernel_fpu_end(); \
})
-extern void __iomem *__init efi_ioremap(unsigned long addr, unsigned long size,
- u32 type, u64 attribute);
-
#ifdef CONFIG_KASAN
/*
* CONFIG_KASAN may redefine memset to __memset. __memset function is present
@@ -143,17 +137,13 @@ extern void __iomem *__init efi_ioremap(unsigned long addr, unsigned long size,
#endif /* CONFIG_X86_32 */
extern struct efi_scratch efi_scratch;
-extern void __init efi_set_executable(efi_memory_desc_t *md, bool executable);
extern int __init efi_memblock_x86_reserve_range(void);
extern void __init efi_print_memmap(void);
-extern void __init efi_memory_uc(u64 addr, unsigned long size);
extern void __init efi_map_region(efi_memory_desc_t *md);
extern void __init efi_map_region_fixed(efi_memory_desc_t *md);
extern void efi_sync_low_kernel_mappings(void);
extern int __init efi_alloc_page_tables(void);
extern int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages);
-extern void __init old_map_region(efi_memory_desc_t *md);
-extern void __init runtime_code_page_mkexec(void);
extern void __init efi_runtime_update_mappings(void);
extern void __init efi_dump_pagetable(void);
extern void __init efi_apply_memmap_quirks(void);
diff --git a/arch/x86/include/asm/entry-common.h b/arch/x86/include/asm/entry-common.h
index a8f9315b9eae..6fe54b2813c1 100644
--- a/arch/x86/include/asm/entry-common.h
+++ b/arch/x86/include/asm/entry-common.h
@@ -18,8 +18,16 @@ static __always_inline void arch_check_user_regs(struct pt_regs *regs)
* state, not the interrupt state as imagined by Xen.
*/
unsigned long flags = native_save_fl();
- WARN_ON_ONCE(flags & (X86_EFLAGS_AC | X86_EFLAGS_DF |
- X86_EFLAGS_NT));
+ unsigned long mask = X86_EFLAGS_DF | X86_EFLAGS_NT;
+
+ /*
+ * For !SMAP hardware we patch out CLAC on entry.
+ */
+ if (boot_cpu_has(X86_FEATURE_SMAP) ||
+ (IS_ENABLED(CONFIG_64_BIT) && boot_cpu_has(X86_FEATURE_XENPV)))
+ mask |= X86_EFLAGS_AC;
+
+ WARN_ON_ONCE(flags & mask);
/* We think we came from user mode. Make sure pt_regs agrees. */
WARN_ON_ONCE(!user_mode(regs));
diff --git a/arch/x86/include/asm/frame.h b/arch/x86/include/asm/frame.h
index 296b346184b2..fb42659f6e98 100644
--- a/arch/x86/include/asm/frame.h
+++ b/arch/x86/include/asm/frame.h
@@ -60,12 +60,26 @@
#define FRAME_END "pop %" _ASM_BP "\n"
#ifdef CONFIG_X86_64
+
#define ENCODE_FRAME_POINTER \
"lea 1(%rsp), %rbp\n\t"
+
+static inline unsigned long encode_frame_pointer(struct pt_regs *regs)
+{
+ return (unsigned long)regs + 1;
+}
+
#else /* !CONFIG_X86_64 */
+
#define ENCODE_FRAME_POINTER \
"movl %esp, %ebp\n\t" \
"andl $0x7fffffff, %ebp\n\t"
+
+static inline unsigned long encode_frame_pointer(struct pt_regs *regs)
+{
+ return (unsigned long)regs & 0x7fffffff;
+}
+
#endif /* CONFIG_X86_64 */
#endif /* __ASSEMBLY__ */
@@ -83,6 +97,11 @@
#define ENCODE_FRAME_POINTER
+static inline unsigned long encode_frame_pointer(struct pt_regs *regs)
+{
+ return 0;
+}
+
#endif
#define FRAME_BEGIN
diff --git a/arch/x86/include/asm/idtentry.h b/arch/x86/include/asm/idtentry.h
index a43366191212..a0638640f1ed 100644
--- a/arch/x86/include/asm/idtentry.h
+++ b/arch/x86/include/asm/idtentry.h
@@ -242,7 +242,7 @@ __visible noinstr void func(struct pt_regs *regs) \
instrumentation_begin(); \
irq_enter_rcu(); \
kvm_set_cpu_l1tf_flush_l1d(); \
- run_on_irqstack_cond(__##func, regs, regs); \
+ run_sysvec_on_irqstack_cond(__##func, regs); \
irq_exit_rcu(); \
instrumentation_end(); \
irqentry_exit(regs, state); \
diff --git a/arch/x86/include/asm/irq_stack.h b/arch/x86/include/asm/irq_stack.h
index 4ae66f097101..775816965c6a 100644
--- a/arch/x86/include/asm/irq_stack.h
+++ b/arch/x86/include/asm/irq_stack.h
@@ -12,20 +12,50 @@ static __always_inline bool irqstack_active(void)
return __this_cpu_read(irq_count) != -1;
}
-void asm_call_on_stack(void *sp, void *func, void *arg);
+void asm_call_on_stack(void *sp, void (*func)(void), void *arg);
+void asm_call_sysvec_on_stack(void *sp, void (*func)(struct pt_regs *regs),
+ struct pt_regs *regs);
+void asm_call_irq_on_stack(void *sp, void (*func)(struct irq_desc *desc),
+ struct irq_desc *desc);
-static __always_inline void __run_on_irqstack(void *func, void *arg)
+static __always_inline void __run_on_irqstack(void (*func)(void))
{
void *tos = __this_cpu_read(hardirq_stack_ptr);
__this_cpu_add(irq_count, 1);
- asm_call_on_stack(tos - 8, func, arg);
+ asm_call_on_stack(tos - 8, func, NULL);
+ __this_cpu_sub(irq_count, 1);
+}
+
+static __always_inline void
+__run_sysvec_on_irqstack(void (*func)(struct pt_regs *regs),
+ struct pt_regs *regs)
+{
+ void *tos = __this_cpu_read(hardirq_stack_ptr);
+
+ __this_cpu_add(irq_count, 1);
+ asm_call_sysvec_on_stack(tos - 8, func, regs);
+ __this_cpu_sub(irq_count, 1);
+}
+
+static __always_inline void
+__run_irq_on_irqstack(void (*func)(struct irq_desc *desc),
+ struct irq_desc *desc)
+{
+ void *tos = __this_cpu_read(hardirq_stack_ptr);
+
+ __this_cpu_add(irq_count, 1);
+ asm_call_irq_on_stack(tos - 8, func, desc);
__this_cpu_sub(irq_count, 1);
}
#else /* CONFIG_X86_64 */
static inline bool irqstack_active(void) { return false; }
-static inline void __run_on_irqstack(void *func, void *arg) { }
+static inline void __run_on_irqstack(void (*func)(void)) { }
+static inline void __run_sysvec_on_irqstack(void (*func)(struct pt_regs *regs),
+ struct pt_regs *regs) { }
+static inline void __run_irq_on_irqstack(void (*func)(struct irq_desc *desc),
+ struct irq_desc *desc) { }
#endif /* !CONFIG_X86_64 */
static __always_inline bool irq_needs_irq_stack(struct pt_regs *regs)
@@ -37,17 +67,40 @@ static __always_inline bool irq_needs_irq_stack(struct pt_regs *regs)
return !user_mode(regs) && !irqstack_active();
}
-static __always_inline void run_on_irqstack_cond(void *func, void *arg,
+
+static __always_inline void run_on_irqstack_cond(void (*func)(void),
struct pt_regs *regs)
{
- void (*__func)(void *arg) = func;
+ lockdep_assert_irqs_disabled();
+
+ if (irq_needs_irq_stack(regs))
+ __run_on_irqstack(func);
+ else
+ func();
+}
+
+static __always_inline void
+run_sysvec_on_irqstack_cond(void (*func)(struct pt_regs *regs),
+ struct pt_regs *regs)
+{
+ lockdep_assert_irqs_disabled();
+ if (irq_needs_irq_stack(regs))
+ __run_sysvec_on_irqstack(func, regs);
+ else
+ func(regs);
+}
+
+static __always_inline void
+run_irq_on_irqstack_cond(void (*func)(struct irq_desc *desc), struct irq_desc *desc,
+ struct pt_regs *regs)
+{
lockdep_assert_irqs_disabled();
if (irq_needs_irq_stack(regs))
- __run_on_irqstack(__func, arg);
+ __run_irq_on_irqstack(func, desc);
else
- __func(arg);
+ func(desc);
}
#endif
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 5ab3af7275d8..5303dbc5c9bc 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1596,7 +1596,8 @@ asmlinkage void kvm_spurious_fault(void);
_ASM_EXTABLE(666b, 667b)
#define KVM_ARCH_WANT_MMU_NOTIFIER
-int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end);
+int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end,
+ unsigned flags);
int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end);
int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
int kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
diff --git a/arch/x86/include/asm/mmu.h b/arch/x86/include/asm/mmu.h
index 0a301ad0b02f..9257667d13c5 100644
--- a/arch/x86/include/asm/mmu.h
+++ b/arch/x86/include/asm/mmu.h
@@ -59,5 +59,6 @@ typedef struct {
}
void leave_mm(int cpu);
+#define leave_mm leave_mm
#endif /* _ASM_X86_MMU_H */
diff --git a/arch/x86/include/asm/ptrace.h b/arch/x86/include/asm/ptrace.h
index 40aa69d04862..d8324a236696 100644
--- a/arch/x86/include/asm/ptrace.h
+++ b/arch/x86/include/asm/ptrace.h
@@ -327,8 +327,8 @@ static inline unsigned long regs_get_kernel_argument(struct pt_regs *regs,
static const unsigned int argument_offs[] = {
#ifdef __i386__
offsetof(struct pt_regs, ax),
- offsetof(struct pt_regs, cx),
offsetof(struct pt_regs, dx),
+ offsetof(struct pt_regs, cx),
#define NR_REG_ARGUMENTS 3
#else
offsetof(struct pt_regs, di),
generated by cgit (git 2.34.1) at 2024-06-07 01:07:52 +0000