linux-kernel - Re: [RFC] KVM MMU: thinking of shadow page cache

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Message-ID: <4BB461E7.9000109@cn.fujitsu.com>
Date:	Thu, 01 Apr 2010 17:05:43 +0800
From:	Xiao Guangrong <xiaoguangrong@...fujitsu.com>
To:	Avi Kivity <avi@...hat.com>
CC:	Ingo Molnar <mingo@...e.hu>, Marcelo Tosatti <mtosatti@...hat.com>,
	Sheng Yang <sheng@...ux.intel.com>,
	KVM list <kvm@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC] KVM MMU: thinking of shadow page cache



Avi Kivity wrote:

>>    
> 
> We've considered this in the past, it makes sense.  The big question is
> whether any guests actually map the same page table through PDEs with
> different permissions (mapping the same page table through multiple PDEs
> is very common, but always with the same permissions).  Do you know of
> any such guest?

I also don't know whether have such guest.
Maybe my idea is no good for current OS, thanks for your comments.

Xiao
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