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

Marcelo Tosatti
2010-12-01T23:34:06Z

On Wed, Dec 01, 2010 at 10:20:38AM +0800, Xiao Guangrong wrote:
> 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).