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

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Message-Id: <200903281707.22688.rusty@rustcorp.com.au>
Date:	Sat, 28 Mar 2009 17:07:22 +1030
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
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

On Saturday 28 March 2009 03:03:04 Jeremy Fitzhardinge wrote:
> 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...

OK, you've convinced me.  I'll drop this patch.  It was as I was looking for
the inconsistent pte values that I thought of this issue.

Thanks!
Rusty.
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