linux-kernel - Re: [PATCH 3/5] lguest: avoid accidental recycling of pgdir pages

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Message-ID: <49CCFFC0.1020904@goop.org>
Date:	Fri, 27 Mar 2009 09:33:04 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Rusty Russell <rusty@...tcorp.com.au>
CC:	lguest@...abs.org, Ingo Molnar <mingo@...hat.com>,
	linux-kernel@...r.kernel.org,
	virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH 3/5] lguest: avoid accidental recycling of pgdir pages

Rusty Russell wrote:
> Now, I haven't *seen* this happen...
>   

Oh, maybe its because you already zap the shadows on tlb flush, and the 
kernel is careful to tlb flush every pagetable page before freeing...

    J
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