From mboxrd@z Thu Jan 1 00:00:00 1970 From: Xiao Guangrong Subject: Re: [PATCH v3 2/3] KVM: MMU: fix accessed bit set on prefault path Date: Wed, 01 Dec 2010 10:20:38 +0800 Message-ID: <4CF5B0F6.8030900@cn.fujitsu.com> References: <4CF4C535.8080405@cn.fujitsu.com> <4CF4C587.7080000@cn.fujitsu.com> <20101130132915.GG2187@redhat.com> <4CF52BC6.9020401@cn.fujitsu.com> <20101130175005.GA2924@redhat.com> <4CF53F41.1040503@cn.fujitsu.com> <20101130183833.GB2924@redhat.com> <4CF54C4F.80901@cn.fujitsu.com> <20101130192059.GC2924@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: Avi Kivity , Marcelo Tosatti , LKML , KVM To: Gleb Natapov Return-path: In-Reply-To: <20101130192059.GC2924@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On 12/01/2010 03:20 AM, Gleb Natapov wrote: > Firs of all if guest is PV the guest process cannot be killed. Second > why is it a problem that we marked pfn as accessed on speculative path? > What problem it causes especially since it is very likely that the page > will be accessed shortly anyway? > Hi Avi, Marcelo, What is your opinion on this point?