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Re: [Xen-devel] [PATCH] libxl: allow to enable/disable cpuid bits



On 11/02/11 11:20, Tim Deegan wrote:
At 10:23 +0100 on 02 Nov (1320229392), Christoph Egger wrote:
On 11/01/11 20:07, Ian Jackson wrote:
Christoph Egger writes ("[Xen-devel] [PATCH] libxl: allow to
enable/disable cpuid bits"):

Allow to enable/disable SVM specific cpuid bits
in the guest config file via cpuid config option.
Also allow to enable/disable the hypervisor cpuid bit
in the guest config file. We need to disable the
hypervisor cpuid bit to get Hyper-V going.

The change itself looks plausible to me.  However I don't know much
about cpuid; can you get an ack from a hypervisor maintainer or an
suitable expert ?

Keir? Tim?

I think the hypervisor bit should be given a better name than 'raz' --
although it is read-as-zero on real hardware that doesn't distinguish it
from other raz bits, or describe what it does.

'hypervisor' maybe, to match 'X86_FEATURE_HYPERVISOR' elsewhere in the
Xen code?

With that change, Acked-by: Tim Deegan<tim@xxxxxxx>

New version with that change attached.

Signed-off-by: Christoph Egger <Christoph.Egger@xxxxxxx>


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Attachment: xen_tools_libxl_cpuid.diff
Description: xen_tools_libxl_cpuid.diff

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