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Re: [libvirt] [PATCH] Add support for SSE4.1 and SSE4.2 CPU features



On 05/18/2010 08:26 AM, Jiri Denemark wrote:
> ---
>  src/cpu/cpu_map.xml |    6 ++++++
>  1 files changed, 6 insertions(+), 0 deletions(-)
> 
> diff --git a/src/cpu/cpu_map.xml b/src/cpu/cpu_map.xml
> index 30c28d7..084b879 100644
> --- a/src/cpu/cpu_map.xml
> +++ b/src/cpu/cpu_map.xml
> @@ -126,6 +126,12 @@
>      <feature name='dca'> <!-- CPUID_EXT_DCA -->
>        <cpuid function='0x00000001' ecx='0x00040000'/>
>      </feature>
> +    <feature name='sse4.1'> <!-- CPUID_EXT_SSE41 -->
> +      <cpuid function='0x00000001' ecx='0x00080000'/>
> +    </feature>
> +    <feature name='sse4.2'> <!-- CPUID_EXT_SSE42 -->
> +      <cpuid function='0x00000001' ecx='0x00100000'/>
> +    </feature>
>      <feature name='x2apic'> <!-- CPUID_EXT_X2APIC -->
>        <cpuid function='0x00000001' ecx='0x00200000'/>
>      </feature>

I had to do a quick google check to validate that these look correct
(http://www.powerbasic.com/support/pbforums/showthread.php?p=342233 was
the first link I found that had some code to confirm my suspicions, but
it isn't the most canonical source).  Adding a URL to your commit
message of an official Intel or AMD site on SSE would clinch it, but
don't let it hold up your commit if you can't quickly find one.

ACK.

-- 
Eric Blake   eblake redhat com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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