From: Avi Kivity <avi@redhat.com>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Alexander Graf <agraf@suse.de>, kvm@vger.kernel.org
Subject: Re: [PATCH 0/5] Fix some mmu/emulator atomicity issues (v2)
Date: Wed, 17 Mar 2010 05:58:45 +0200 [thread overview]
Message-ID: <4BA05375.4030204@redhat.com> (raw)
In-Reply-To: <20100316193329.GA13101@amt.cnet>
On 03/16/2010 09:33 PM, Marcelo Tosatti wrote:
>
>> How relevant is this for -stable? Races don't sound good to me :)
>>
> The race mentioned above is not existant on -stable since prefetch is
> disabled for invlpg.
>
> The atomic fixes seem like a candidate, since lack of them can trigger
> pagetable corruption. Avi?
>
I would this to get some use on mainline before queuing the first few
patches. They aren't trivial, and I don't know of any failures
resulting from the races.
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
next prev parent reply other threads:[~2010-03-17 3:58 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-15 11:59 [PATCH 0/5] Fix some mmu/emulator atomicity issues (v2) Avi Kivity
2010-03-15 11:59 ` [PATCH 1/5] KVM: MMU: Consolidate two guest pte reads in kvm_mmu_pte_write() Avi Kivity
2010-03-15 11:59 ` [PATCH 2/5] KVM: Make locked operations truly atomic Avi Kivity
2010-03-17 7:45 ` Jan Kiszka
2010-03-17 8:05 ` Avi Kivity
2010-03-20 9:14 ` [PATCH] KVM: x86: Fix 32-bit build breakage due to typo Jan Kiszka
2010-03-21 14:34 ` Avi Kivity
2010-03-15 11:59 ` [PATCH 3/5] KVM: Don't follow an atomic operation by a non-atomic one Avi Kivity
2010-03-15 11:59 ` [PATCH 4/5] KVM: MMU: Do not instantiate nontrapping spte on unsync page Avi Kivity
2010-03-15 11:59 ` [PATCH 5/5] KVM: MMU: Reinstate pte prefetch on invlpg Avi Kivity
2010-03-16 16:36 ` [PATCH 0/5] Fix some mmu/emulator atomicity issues (v2) Marcelo Tosatti
2010-03-16 18:22 ` Alexander Graf
2010-03-16 19:33 ` Marcelo Tosatti
2010-03-17 3:58 ` Avi Kivity [this message]
-- strict thread matches above, loose matches on Subject: below --
2010-03-10 14:50 Avi Kivity
2010-03-14 7:03 ` Avi Kivity
2010-03-15 10:16 ` Marcelo Tosatti
2010-03-15 11:52 ` Avi Kivity
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