Re: [PATCH v3 2/3] KVM: MMU: fix accessed bit set on prefault path

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From: Marcelo Tosatti

Subject: Re: [PATCH v3 2/3] KVM: MMU: fix accessed bit set on prefault path

Date: Wednesday, December 1, 2010 - 1:42 pm

On Wed, Dec 01, 2010 at 10:20:38AM +0800, Xiao Guangrong wrote:
quoted text> 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?

Dont think this is an issue. Its very likely the page is going to be
accessed soon (unlike pte prefetch).

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Messages in current thread:

[PATCH v3 1/3] KVM: MMU: rename 'no_apf' to 'prefault', Xiao Guangrong, (Tue Nov 30, 2:34 am)

[PATCH v3 2/3] KVM: MMU: fix accessed bit set on prefault path, Xiao Guangrong, (Tue Nov 30, 2:36 am)

[PATCH v3 3/3] KVM: MMU: retry #PF for softmmu, Xiao Guangrong, (Tue Nov 30, 2:37 am)

Re: [PATCH v3 2/3] KVM: MMU: fix accessed bit set on prefa ..., Gleb Natapov, (Tue Nov 30, 6:29 am)

Re: [PATCH v3 2/3] KVM: MMU: fix accessed bit set on prefa ..., Xiao Guangrong, (Tue Nov 30, 9:52 am)

Re: [PATCH v3 2/3] KVM: MMU: fix accessed bit set on prefa ..., Gleb Natapov, (Tue Nov 30, 10:50 am)

Re: [PATCH v3 2/3] KVM: MMU: fix accessed bit set on prefa ..., Xiao Guangrong, (Tue Nov 30, 11:15 am)

Re: [PATCH v3 2/3] KVM: MMU: fix accessed bit set on prefa ..., Gleb Natapov, (Tue Nov 30, 11:38 am)

Re: [PATCH v3 2/3] KVM: MMU: fix accessed bit set on prefa ..., Xiao Guangrong, (Tue Nov 30, 12:11 pm)

Re: [PATCH v3 2/3] KVM: MMU: fix accessed bit set on prefa ..., Gleb Natapov, (Tue Nov 30, 12:20 pm)

Re: [PATCH v3 2/3] KVM: MMU: fix accessed bit set on prefa ..., Xiao Guangrong, (Tue Nov 30, 7:20 pm)

Re: [PATCH v3 2/3] KVM: MMU: fix accessed bit set on prefa ..., Marcelo Tosatti, (Wed Dec 1, 1:42 pm)

Re: [PATCH v3 3/3] KVM: MMU: retry #PF for softmmu, Marcelo Tosatti, (Wed Dec 1, 6:19 pm)

Re: [PATCH v3 3/3] KVM: MMU: retry #PF for softmmu, Xiao Guangrong, (Wed Dec 1, 8:44 pm)


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