From f2c4e5970cece75a895fcc45f0cd66b5a5ec0819 Mon Sep 17 00:00:00 2001 From: Jia He Date: Fri, 11 Oct 2019 22:09:38 +0800 Subject: x86/mm: implement arch_faults_on_old_pte() stub on x86 arch_faults_on_old_pte is a helper to indicate that it might cause page fault when accessing old pte. But on x86, there is feature to setting pte access flag by hardware. Hence implement an overriding stub which always returns false. Signed-off-by: Jia He Suggested-by: Will Deacon Signed-off-by: Catalin Marinas --- arch/x86/include/asm/pgtable.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'arch/x86/include/asm') diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index 0bc530c4eb13..ad97dc155195 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -1463,6 +1463,12 @@ static inline bool arch_has_pfn_modify_check(void) return boot_cpu_has_bug(X86_BUG_L1TF); } +#define arch_faults_on_old_pte arch_faults_on_old_pte +static inline bool arch_faults_on_old_pte(void) +{ + return false; +} + #include #endif /* __ASSEMBLY__ */ -- cgit v1.2.3