From: Marcelo Tosatti <mtosatti@redhat.com>
To: Avi Kivity <avi@redhat.com>
Cc: kvm@vger.kernel.org
Subject: Re: [PATCH 0/5] Fix some mmu/emulator atomicity issues (v2)
Date: Mon, 15 Mar 2010 07:16:39 -0300 [thread overview]
Message-ID: <20100315101639.GA31813@amt.cnet> (raw)
In-Reply-To: <4B9C8A53.8030902@redhat.com>
On Sun, Mar 14, 2010 at 09:03:47AM +0200, Avi Kivity wrote:
> On 03/10/2010 04:50 PM, Avi Kivity wrote:
> >Currently when we emulate a locked operation into a shadowed guest page
> >table, we perform a write rather than a true atomic. This is indicated
> >by the "emulating exchange as write" message that shows up in dmesg.
> >
> >In addition, the pte prefetch operation during invlpg suffered from a
> >race. This was fixed by removing the operation.
> >
> >This patchset fixes both issues and reinstates pte prefetch on invlpg.
> >
> >v2:
> > - fix truncated description for patch 1
> > - add new patch 4, which fixes a bug in patch 5
>
> No comments, but looks like last week's maintainer neglected to merge this.
Looks fine. Can you please regenerate against next branch? (just
pushed).
For the invlpg prefetch it would be good to confirm the original bug is
not reproducible.
next prev parent reply other threads:[~2010-03-15 10:17 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-10 14:50 [PATCH 0/5] Fix some mmu/emulator atomicity issues (v2) Avi Kivity
2010-03-10 14:50 ` [PATCH 1/5] KVM: MMU: Consolidate two guest pte reads in kvm_mmu_pte_write() Avi Kivity
2010-03-10 14:50 ` [PATCH 2/5] KVM: Make locked operations truly atomic Avi Kivity
2010-03-10 14:50 ` [PATCH 3/5] KVM: Don't follow an atomic operation by a non-atomic one Avi Kivity
2010-03-10 14:50 ` [PATCH 4/5] KVM: MMU: Do not instantiate nontrapping spte on unsync page Avi Kivity
2010-03-10 14:50 ` [PATCH 5/5] KVM: MMU: Reinstate pte prefetch on invlpg Avi Kivity
2010-03-14 7:03 ` [PATCH 0/5] Fix some mmu/emulator atomicity issues (v2) Avi Kivity
2010-03-15 10:16 ` Marcelo Tosatti [this message]
2010-03-15 11:52 ` Avi Kivity
-- strict thread matches above, loose matches on Subject: below --
2010-03-15 11:59 Avi Kivity
2010-03-16 16:36 ` Marcelo Tosatti
2010-03-16 18:22 ` Alexander Graf
2010-03-16 19:33 ` Marcelo Tosatti
2010-03-17 3:58 ` Avi Kivity
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