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 <justin.he@arm.com> Suggested-by: Will Deacon <will@kernel.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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@ -1463,6 +1463,12 @@ static inline bool arch_has_pfn_modify_check(void)
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return boot_cpu_has_bug(X86_BUG_L1TF);
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return boot_cpu_has_bug(X86_BUG_L1TF);
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}
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}
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#define arch_faults_on_old_pte arch_faults_on_old_pte
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static inline bool arch_faults_on_old_pte(void)
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{
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return false;
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}
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#include <asm-generic/pgtable.h>
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#include <asm-generic/pgtable.h>
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#endif /* __ASSEMBLY__ */
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#endif /* __ASSEMBLY__ */
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