Messages in this thread | | | Date | Tue, 8 Feb 2022 01:24:13 -0700 | From | Yu Zhao <> | Subject | Re: [PATCH v7 01/12] mm: x86, arm64: add arch_has_hw_pte_young() |
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On Tue, Feb 08, 2022 at 01:18:51AM -0700, Yu Zhao wrote:
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> diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h > index c4ba047a82d2..990358eca359 100644 > --- a/arch/arm64/include/asm/pgtable.h > +++ b/arch/arm64/include/asm/pgtable.h > @@ -999,23 +999,13 @@ static inline void update_mmu_cache(struct vm_area_struct *vma, > * page after fork() + CoW for pfn mappings. We don't always have a > * hardware-managed access flag on arm64. > */ > -static inline bool arch_faults_on_old_pte(void) > -{ > - WARN_ON(preemptible()); > - > - return !cpu_has_hw_af(); > -} > -#define arch_faults_on_old_pte arch_faults_on_old_pte > +#define arch_has_hw_pte_young cpu_has_hw_af
Reworked arch_has_hw_pte_young() for arm64 according to: https://lore.kernel.org/linux-mm/20220111141901.GA10338@willie-the-truck/
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