Re: [PATCH 15/22] kvm: mmu: Support changed pte notifier in tdp MMU

[Paolo Bonzini]

On 25/09/20 23:22, Ben Gardon wrote:
> @@ -1708,6 +1695,21 @@ static int kvm_unmap_rmapp(struct kvm *kvm, struct kvm_rmap_head *rmap_head,
>  	return kvm_zap_rmapp(kvm, rmap_head);
>  }
>  
> +u64 kvm_mmu_changed_pte_notifier_make_spte(u64 old_spte, kvm_pfn_t new_pfn)
> +{
> +	u64 new_spte;
> +
> +	new_spte = old_spte & ~PT64_BASE_ADDR_MASK;
> +	new_spte |= (u64)new_pfn << PAGE_SHIFT;
> +
> +	new_spte &= ~PT_WRITABLE_MASK;
> +	new_spte &= ~SPTE_HOST_WRITEABLE;
> +
> +	new_spte = mark_spte_for_access_track(new_spte);
> +
> +	return new_spte;
> +}
> +

And another. :)