linux-kernel - Re: [PATCH 00/13] KVM: MMU: fast page fault

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Message-ID: <4F84059D.80606@redhat.com>
Date:	Tue, 10 Apr 2012 13:04:13 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Marcelo Tosatti <mtosatti@...hat.com>
CC:	Xiao Guangrong <xiaoguangrong.eric@...il.com>,
	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>,
	LKML <linux-kernel@...r.kernel.org>, KVM <kvm@...r.kernel.org>
Subject: Re: [PATCH 00/13] KVM: MMU: fast page fault

On 04/09/2012 10:46 PM, Marcelo Tosatti wrote:
> Perhaps the mmu_lock hold times by get_dirty are a large component here?

That's my concern, because it affects the scaling of migration for wider
guests.

> If that can be alleviated, not only RO->RW faults benefit.

Those are the most common types of faults on modern hardware, no?

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

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