[Xen-devel] [PATCH] Mask off the reserved features in cpuid (ecx

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Subject:	[Xen-devel] [PATCH] Mask off the reserved features in cpuid (ecx = 1)
From:	"Nakajima, Jun" <jun.nakajima@xxxxxxxxx>
Date:	Tue, 13 Dec 2005 13:53:28 -0800
Delivery-date:	Tue, 13 Dec 2005 21:55:13 +0000
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Thread-topic:	[PATCH] Mask off the reserved features in cpuid (ecx = 1)

The patch prevents new potential features from being exposed to the
guests when not virtualized properly. Guests can attempt to set the
control registers, etc. (and get #GP and panic) if they are aware of the
new feature and the cpuid says it's available.

Signed-off-by: <jun.nakajima@xxxxxxxxx>

Jun
---
Intel Open Source Technology Center

cpuid.patch
Description: cpuid.patch

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[Xen-devel] [PATCH] Mask off the reserved features in cpuid (ecx = 1)