linux-kernel - Re: [PATCH] KVM: MMU: fix the condition of syncing a new shadow page

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Message-ID: <CADqbE94FN1h2=pwAAB4Ry3Z3+4uRaTnA6PD3c-hAjw5pOzqtSQ@mail.gmail.com>
Date:	Mon, 24 Oct 2011 17:04:14 +0800
From:	Zhao Jin <cronozhj@...il.com>
To:	Xiao Guangrong <xiao.guangrong@...com>
Cc:	avi@...hat.com, mtosatti@...hat.com, linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org
Subject: Re: [PATCH] KVM: MMU: fix the condition of syncing a new shadow page

2011/10/24 Xiao Guangrong <xiao.guangrong@...com>:
> On 2011/10/24 15:21, Zhao Jin wrote:
>> Should be "or" since a new shadow page is synced if either it is
>> not leaf or there already exists another unsync shadow page with
>> the same gfn.
>>
>
> It is obviously wrong, we need to sync pages only if it has unsync page
> *and* the new shadow page breaks the unsync rule(only the level 1 sp can
> became unsync).
>

Please ignore this patch as I had taken an incorrect assumption.
Thanks very much for the correction.
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