linux-kernel - Re: [PATCH 04/15] KVM: MMU: cache mmio info on page fault path

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Message-ID: <4DEF41F6.8050204@cn.fujitsu.com>
Date:	Wed, 08 Jun 2011 17:33:42 +0800
From:	Xiao Guangrong <xiaoguangrong@...fujitsu.com>
To:	Alexander Graf <agraf@...e.de>
CC:	Avi Kivity <avi@...hat.com>, Marcelo Tosatti <mtosatti@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>, KVM <kvm@...r.kernel.org>
Subject: Re: [PATCH 04/15] KVM: MMU: cache mmio info on page fault path

On 06/08/2011 05:18 PM, Alexander Graf wrote:

>>
>> Also, when context switched, CR3 is reloaded, mmio cache info can be cleared too. right? :-)
> 
> Only when using SPT. In the NPT case, you will never see cr3 getting reloaded or INVLPG :).
> 

In the NPT case, we only cache the GPA, GVA is not cached (vcpu.arch.mmio_gva is always 0) ;-)
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