Re: [RFC PATCH 4/9] KVM: x86/mmu: Use Accessed bit even when _hardware_ A/D bits are disabled

[David Matlack <dmatlack@xxxxxxxxxx>]

On Thu, Aug 1, 2024 at 11:36 AM Sean Christopherson <seanjc@xxxxxxxxxx> wrote:
> --- a/arch/x86/kvm/mmu/spte.c
> +++ b/arch/x86/kvm/mmu/spte.c
> @@ -181,7 +181,7 @@ bool make_spte(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
>
>         spte |= shadow_present_mask;
>         if (!prefetch)
> -               spte |= spte_shadow_accessed_mask(spte);
> +               spte |= shadow_accessed_mask;
>
>         /*
>          * For simplicity, enforce the NX huge page mitigation even if not
> @@ -258,7 +258,7 @@ bool make_spte(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
>         }
>
>         if (pte_access & ACC_WRITE_MASK)
> -               spte |= spte_shadow_dirty_mask(spte);
> +               spte |= shadow_accessed_mask;

spte |= shadow_dirty_mask;