Re: [PATCH] KVM: x86/mmu: Don't put invalid SPs back on the list of active pages

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On 22/06/20 21:18, Sean Christopherson wrote:
> diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
> index fdd05c233308..fa5bd3f987dd 100644
> --- a/arch/x86/kvm/mmu/mmu.c
> +++ b/arch/x86/kvm/mmu/mmu.c
> @@ -2757,10 +2757,13 @@ static bool __kvm_mmu_prepare_zap_page(struct kvm *kvm,
>  	if (!sp->root_count) {
>  		/* Count self */
>  		(*nr_zapped)++;
> -		list_move(&sp->link, invalid_list);
> +		if (sp->role.invalid)
> +			list_add(&sp->link, invalid_list);
> +		else
> +			list_move(&sp->link, invalid_list);

It's late here, but I think this part needs a comment anyway...

Paolo




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