linux-kernel - Re: [PATCH 07/10] KVM: x86: MMU: Encapsulate the type of rmap-chain head in a new struct

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Message-ID: <564BEEAA.4080101@linux.intel.com>
Date:	Wed, 18 Nov 2015 11:21:14 +0800
From:	Xiao Guangrong <guangrong.xiao@...ux.intel.com>
To:	Takuya Yoshikawa <yoshikawa_takuya_b1@....ntt.co.jp>,
	pbonzini@...hat.com
Cc:	kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 07/10] KVM: x86: MMU: Encapsulate the type of rmap-chain
 head in a new struct



On 11/12/2015 07:55 PM, Takuya Yoshikawa wrote:
> @@ -1720,7 +1724,7 @@ static struct kvm_mmu_page *kvm_mmu_alloc_page(struct kvm_vcpu *vcpu,
>   	 * this feature. See the comments in kvm_zap_obsolete_pages().
>   	 */
>   	list_add(&sp->link, &vcpu->kvm->arch.active_mmu_pages);
> -	sp->parent_ptes = 0;
> +	sp->parent_ptes.val = 0;

The sp is allocated from kmem_cache_zalloc() so explicitly initialize it to zero is
not needed.
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