Commit f2c4e597 authored Oct 11, 2019 by Jia He Committed by Catalin Marinas Oct 18, 2019

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>

parent 6af31226

arch/x86/include/asm/pgtable.h

+6 −0

Original line number	Diff line number	Diff line
		@@ -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 <asm-generic/pgtable.h>
		#endif /* __ASSEMBLY__ */

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