linux-kernel - Re: [PATCH v2 1/6] KVM: MMU: fix forgot flush vcpu tlbs

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Message-ID: <4CE4F292.2060608@redhat.com>
Date:	Thu, 18 Nov 2010 11:32:02 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Xiao Guangrong <xiaoguangrong@...fujitsu.com>
CC:	Marcelo Tosatti <mtosatti@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>, KVM <kvm@...r.kernel.org>
Subject: Re: [PATCH v2 1/6] KVM: MMU: fix forgot flush vcpu tlbs

On 11/18/2010 09:17 AM, Xiao Guangrong wrote:
> On 11/18/2010 01:36 AM, Marcelo Tosatti wrote:
>
> >>  I don't think we need to flush immediately; set a "tlb dirty" bit
> >>  somewhere that is cleareded when we flush the tlb.
> >>  kvm_mmu_notifier_invalidate_page() can consult the bit and force a
> >>  flush if set.
> >
> >  Yep.
> >
>
> Great, i'll do it in the v3.
>
> Do we need a simple bug fix patch(which immediately flush tlbs) for
> backport first?

Oh yes.  Simple fix first, clever ideas later (which will likely need to 
be fixed anyway).


-- 
error compiling committee.c: too many arguments to function

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