Messages in this thread Patch in this message |  | | From | Tony Luck <> | Subject | [PATCH v2 5/7] x86/mce: Change fault_in_kernel_space() from static to global | Date | Wed, 30 Sep 2020 16:26:09 -0700 |
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From: Youquan Song <youquan.song@intel.com>
Machine check code needs to be able to determine if a faulting address is in user or kernel space. There is already a function to do this.
Change from "static int" to "bool" and add declaration to <asm/traps.h>
No functional change.
Signed-off-by: Youquan Song <youquan.song@intel.com> Signed-off-by: <tony.luck@intel.com> --- arch/x86/include/asm/traps.h | 2 ++ arch/x86/mm/fault.c | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/traps.h b/arch/x86/include/asm/traps.h index 714b1a30e7b0..df0b7bfc1234 100644 --- a/arch/x86/include/asm/traps.h +++ b/arch/x86/include/asm/traps.h @@ -35,6 +35,8 @@ extern int panic_on_unrecovered_nmi; void math_emulate(struct math_emu_info *); +bool fault_in_kernel_space(unsigned long address); + #ifdef CONFIG_VMAP_STACK void __noreturn handle_stack_overflow(const char *message, struct pt_regs *regs, diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index 35f1498e9832..88ae443e4e5f 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -1081,7 +1081,7 @@ access_error(unsigned long error_code, struct vm_area_struct *vma) return 0; } -static int fault_in_kernel_space(unsigned long address) +bool fault_in_kernel_space(unsigned long address) { /* * On 64-bit systems, the vsyscall page is at an address above -- 2.21.1
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