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[Xen-devel] Re: [PATCH 06/16] xen: disable PAT

from [Thomas Gleixner] [Permanent Link][Original]
To: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: [Xen-devel] Re: [PATCH 06/16] xen: disable PAT
From: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Date: Tue, 2 Jun 2009 17:37:44 +0200 (CEST)
Cc: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Ian Campbell <ian.campbell@xxxxxxxxxx>, the arch/x86 maintainers <x86@xxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxx>
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On Tue, 12 May 2009, Jeremy Fitzhardinge wrote:

> From: Ian Campbell <ian.campbell@xxxxxxxxxx>
> 
> Xen imposes a particular PAT layout on all paravirtual guests which
> does not match the layout Linux would like to use.
> 
> Force PAT to be disabled until this is resolved.

No, this can be done via CPUID, which is paravirtualized already.
 
Thanks,

        tglx

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