From: Avi Kivity <avi@redhat.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
kvm@vger.kernel.org
Subject: Re: [PATCH] KVM: Defer remote tlb flushes on invlpg (v2)
Date: Wed, 18 Mar 2009 08:23:45 +0200 [thread overview]
Message-ID: <49C09371.8000003@redhat.com> (raw)
In-Reply-To: <87y6v31x3z.fsf@basil.nowhere.org>
Andi Kleen wrote:
>> KVM flushes tlbs on remote cpus for two purposes: to protect guest pages
>> that it needs to collect information about, and to prevent stale tlb entries
>> from pointing to pages that no longer belong to the guest.
>>
>
> I assume you have numbers with some benchmark how much that
> improves performance. It would be nice to add them to the
> commit log.
>
Your assumption is incorrect; I did not benchmark this patch.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
next prev parent reply other threads:[~2009-03-18 6:23 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-16 11:07 [PATCH] KVM: Defer remote tlb flushes on invlpg (v2) Avi Kivity
2009-03-17 19:47 ` Marcelo Tosatti
2009-03-18 0:41 ` Andi Kleen
2009-03-18 6:23 ` Avi Kivity [this message]
2009-03-18 22:53 ` Andrea Arcangeli
2009-03-19 10:27 ` Avi Kivity
2009-03-19 10:29 ` Avi Kivity
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