linux-kernel - Re: [PATCH v4 1/3] KVM: MMU: rename 'no

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Message-ID: <20101206093208.GA15610@redhat.com>
Date:	Mon, 6 Dec 2010 11:32:08 +0200
From:	Gleb Natapov <gleb@...hat.com>
To:	Marcelo Tosatti <mtosatti@...hat.com>
Cc:	Xiao Guangrong <xiaoguangrong@...fujitsu.com>,
	Avi Kivity <avi@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>, KVM <kvm@...r.kernel.org>
Subject: Re: [PATCH v4 1/3] KVM: MMU: rename 'no_apf' to 'prefault'

On Fri, Dec 03, 2010 at 06:30:55PM -0200, Marcelo Tosatti wrote:
> On Thu, Dec 02, 2010 at 05:44:43PM +0800, Xiao Guangrong wrote:
> > It's the speculative path if 'no_apf = 1' and we will specially handle this
> > speculative path in the later patch, so 'prefault' is better to fit the sense
> > 
> > Signed-off-by: Xiao Guangrong <xiaoguangrong@...fujitsu.com>
> > ---
> >  arch/x86/include/asm/kvm_host.h |    3 ++-
> >  arch/x86/kvm/mmu.c              |   18 +++++++++---------
> >  arch/x86/kvm/paging_tmpl.h      |    4 ++--
> >  3 files changed, 13 insertions(+), 12 deletions(-)
> 
> Looks good to me. Avi, Gleb?
Looks mostly OK to me too. Third patch check only cr3 but cr4 & efer can
affect paging too, but since page fault is not injected anyway in case
of an error and for most guests cr4 & efer shouldn't change frequently I
guess this is OK.

--
			Gleb.
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