From: Avi Kivity <avi@redhat.com>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: kvm@vger.kernel.org
Subject: Re: [patch 2/3] KVM: MMU: skip global pgtables on sync due to cr3 switch
Date: Fri, 31 Oct 2008 21:43:50 +0200 [thread overview]
Message-ID: <490B5FF6.4040806@redhat.com> (raw)
In-Reply-To: <20081031193603.GC21772@dmt.cnet>
Marcelo Tosatti wrote:
>> But a more accurate approach is to keep a count
>> of non-global present mappings, and to activate the global logic when
>> this count is nonzero.
>>
>
> I don't think the overhead it adds is significant for the added
> complexity?
>
Not sure what you're asking exactly (-ENOPARSE). I don't think it's
worthwhile to account for !global -> global transitions.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
next prev parent reply other threads:[~2008-10-31 19:43 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-25 22:31 [patch 0/3] oos shadow optimizations Marcelo Tosatti
2008-10-25 22:31 ` [patch 1/3] KVM: MMU: collapse remote TLB flushes on root sync Marcelo Tosatti
2008-10-26 11:17 ` Avi Kivity
2008-10-29 23:26 ` Marcelo Tosatti
2008-10-30 10:04 ` Avi Kivity
2008-10-31 19:30 ` Marcelo Tosatti
2008-10-25 22:31 ` [patch 2/3] KVM: MMU: skip global pgtables on sync due to cr3 switch Marcelo Tosatti
2008-10-26 11:27 ` Avi Kivity
2008-10-31 19:36 ` Marcelo Tosatti
2008-10-31 19:43 ` Avi Kivity [this message]
2008-10-31 19:50 ` Marcelo Tosatti
2008-10-31 19:59 ` Avi Kivity
2008-10-25 22:31 ` [patch 3/3] KVM: MMU: prepopulate the shadow on invlpg Marcelo Tosatti
2008-10-26 11:48 ` Avi Kivity
2008-10-31 19:47 ` Marcelo Tosatti
2008-10-31 19:58 ` Avi Kivity
2008-10-31 22:33 ` Marcelo Tosatti
2008-11-02 8:39 ` Avi Kivity
2008-11-02 16:08 ` Marcelo Tosatti
2008-11-02 16:14 ` Avi Kivity
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