linux-kernel - Re: [PATCH v2 01/15] KVM: MMU: fix the count of spte number

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Date:	Sun, 8 Sep 2013 15:19:17 +0300
From:	Gleb Natapov <gleb@...hat.com>
To:	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
Cc:	avi.kivity@...il.com, mtosatti@...hat.com, pbonzini@...hat.com,
	linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [PATCH v2 01/15] KVM: MMU: fix the count of spte number

On Thu, Sep 05, 2013 at 06:29:04PM +0800, Xiao Guangrong wrote:
> If the desc is the last one and it is full, its sptes is not counted
> 
Hmm, if desc is not full but it is not the last one all sptes after the
desc are not counted too.

> Signed-off-by: Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
> ---
>  arch/x86/kvm/mmu.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
> index 6e2d2c8..7714fd8 100644
> --- a/arch/x86/kvm/mmu.c
> +++ b/arch/x86/kvm/mmu.c
> @@ -948,6 +948,7 @@ static int pte_list_add(struct kvm_vcpu *vcpu, u64 *spte,
>  			count += PTE_LIST_EXT;
>  		}
>  		if (desc->sptes[PTE_LIST_EXT-1]) {
> +			count += PTE_LIST_EXT;
>  			desc->more = mmu_alloc_pte_list_desc(vcpu);
>  			desc = desc->more;
>  		}
> -- 
> 1.8.1.4

--
			Gleb.
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