linux-kernel - Re: [PATCH 10 of 10] xen: mask out PWT too

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Message-ID: <47851AD1.2040604@goop.org>
Date:	Wed, 09 Jan 2008 11:04:49 -0800
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Jan Beulich <jbeulich@...ell.com>
CC:	Ingo Molnar <mingo@...e.hu>,
	Glauber de Oliveira Costa <glommer@...il.com>,
	Andi Kleen <ak@...e.de>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 10 of 10] xen: mask out PWT too

Jan Beulich wrote:
> That's somewhat ugly, as it will need to be undone/modified for Dom0 and
> physical device access support. Jan
>   

Yes, I know, but its a quick workaround for a silent change in 
hypervisor behaviour.

The proper fix would probably mask them out of the supported_pte_flags, 
but that's a little more subtle to get right.

    J
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