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Re: [Xen-devel] [PATCH] x86/amd: re-enable CPU topology extensions in case BIOS has disabled it

To: "Keir Fraser" <keir.xen@xxxxxxxxx>
From: "Jan Beulich" <JBeulich@xxxxxxxx>
Date: Wed, 30 May 2012 16:44:10 +0100
Cc: Andre Przywara <andre.przywara@xxxxxxx>, Andreas Herrmann <Andreas.Herrmann3@xxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxx>
Delivery-date: Wed, 30 May 2012 15:44:30 +0000
List-id: Xen developer discussion <xen-devel.lists.xen.org>

>>> On 30.05.12 at 17:23, Keir Fraser <keir.xen@xxxxxxxxx> wrote:
> On 30/05/2012 16:04, "Jan Beulich" <JBeulich@xxxxxxxx> wrote:
> 
>> BIOS will switch off the corresponding feature flag on family
>> 15h models 10h-1fh non-desktop CPUs.
> 
> Why would it do that? It seems silly.

Indeed. But the change comes from Linux 3.4. Andreas, Andre?

Jan


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References:
- [Xen-devel] [PATCH] x86/amd: re-enable CPU topology extensions in case BIOS has disabled it
  - From: Jan Beulich
- Re: [Xen-devel] [PATCH] x86/amd: re-enable CPU topology extensions in case BIOS has disabled it
  - From: Keir Fraser

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