[libvirt] [PATCH] cpu: Add support for al57 Intel features

[Feng, Shaohe]

On 2018年01月05日 02:52, John Ferlan wrote:
>
> On 12/17/2017 06:02 PM, Shaohe Feng wrote:
>> We can start qemu with a "cpu,+la57" to set 57-bit vitrual address
>> space. So VM can be aware that it need to enable 5-level paging.
>>
>> Corresponding QEMU commits:
>>          al57 6c7c3c21f95dd9af8a0691c0dd29b07247984122
>> ---
>>   src/cpu/cpu_map.xml | 3 +++
>>   1 file changed, 3 insertions(+)
>>
> I think if you go through history of cpu_map.xml changes you'll find
> when a new feature is added there are tests added as well - this would
> thus seemingly need a test adjustment as well.
Thanks John.
Will add tests.

>
> John
>
>> diff --git a/src/cpu/cpu_map.xml b/src/cpu/cpu_map.xml
>> index e5da7a8..922a195 100644
>> --- a/src/cpu/cpu_map.xml
>> +++ b/src/cpu/cpu_map.xml
>> @@ -285,6 +285,9 @@
>>       <feature name='ospke'>
>>         <cpuid eax_in='0x07' ecx_in='0x00' ecx='0x00000010'/>
>>       </feature>
>> +    <feature name='la57'>
>> +      <cpuid eax_in='0x07' ecx_in='0x00' ecx='0x00010000'/>
>> +    </feature>
>>   
>>       <feature name='avx512-4vnniw'>
>>         <cpuid eax_in='0x07' ecx_in='0x00' edx='0x00000004'/>
>>