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Re: [Xen-devel] [PATCH][SVM] remove FFXSR CPUID bit for AMD-V HVM guests

To: "Thomas Woller" <thomas.woller@xxxxxxx>
From: "Jan Beulich" <jbeulich@xxxxxxxxxx>
Date: Thu, 01 Feb 2007 08:20:11 +0000
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Thu, 01 Feb 2007 00:17:47 -0800
List-id: Xen developer discussion <xen-devel.lists.xensource.com>

>>> "Woller, Thomas" <thomas.woller@xxxxxxx> 01.02.07 00:06 >>>
>Remove visibility of the FFXSR CPUID bit to an HVM guest.
>This patch allows HVM Windows x64 to install/boot on AMD-V platforms.

Would you mind explaining why this is necessary? (Similarly I have a hard
time understanding why 3dnow can't be allowed for hvm guests.)

Jan

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