From mboxrd@z Thu Jan  1 00:00:00 1970
From: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Subject: Re: [PATCH v3 05/11] KVM: MMU: do not mark accessed bit on pte write
 path
Date: Wed, 14 Sep 2011 02:29:43 +0800
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References: <4E5C4C20.3000403@cn.fujitsu.com> <4E5C4C8D.5040509@cn.fujitsu.com> <4E6F363E.9080000@redhat.com>
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Cc: Marcelo Tosatti <mtosatti@redhat.com>,
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To: Avi Kivity <avi@redhat.com>
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On 09/13/2011 06:53 PM, Avi Kivity wrote:
> On 08/30/2011 05:35 AM, Xiao Guangrong wrote:
>> In current code, the accessed bit is always set when page fault occurred,
>> do not need to set it on pte write path
> 
> What about speculative sptes that are then only accessed via emulation?
> 

The gfn is read and written only via emulation? I think this case is very
very rare?