[libvirt] [PATCH] cpu: Add Intel Haswell cpu model

Peter Krempa pkrempa at redhat.com
Thu Nov 22 15:48:43 UTC 2012


On 11/22/12 15:52, Martin Kletzander wrote:
> On 11/22/2012 03:05 PM, Peter Krempa wrote:
>> The new model supports following features in addition to those supported
>> by SandyBridge:
>>
>> fma, movbe, fsgsbase, bmi1, hle, avx2, smep, bmi2, erms, invpcid, rtm
>
> missing 'pcid' flag

Ah, yeah, thanks for pointing out.

>
>> ---
>> Based on: https://lists.gnu.org/archive/html/qemu-devel/2012-11/msg01328.html
>> ---
>>   src/cpu/cpu_map.xml | 16 ++++++++++++++++
>>   1 file changed, 16 insertions(+)
>>
>> diff --git a/src/cpu/cpu_map.xml b/src/cpu/cpu_map.xml
>> index 7ff91be..eb69a34 100644
>> --- a/src/cpu/cpu_map.xml
>> +++ b/src/cpu/cpu_map.xml
>> @@ -495,6 +495,22 @@
>>         <feature name='rdtscp'/>
>>       </model>
>>
>> +    <model name='Haswell'>
>> +      <model name='SandyBridge'/>
>> +      <feature name='fma'/>
>> +      <feature name='pcid'/>
>> +      <feature name='movbe'/>
>> +      <feature name='fsgsbase'/>
>> +      <feature name='bmi1'/>
>> +      <feature name='hle'/>
>> +      <feature name='avx2'/>
>> +      <feature name='smep'/>
>> +      <feature name='bmi2'/>
>> +      <feature name='erms'/>
>> +      <feature name='invpcid'/>
>> +      <feature name='rtm'/>
>> +    </model>
>> +
>>       <!-- AMD CPUs -->
>>       <model name='athlon'>
>>         <model name='pentiumpro'/>
>>
>
> According to the qemu patch, the model should be only adding features,
> but I see rdtscp disappeared between SandyBridge and Haswell.  The
> question is whether this is QEMU bug or not, do you have any info on
> that?  If not, maybe we should cross-post ask in qemu-devel.
>
> We also include 'sep' and 'fpu' on top of these things, but I recall
> some conversation about qemu dropping 'sep' from some models lately, but
> I have no idea about 'fpu' flag handling there either.

Thanks for pointing that out on the qemu-devel list:

https://lists.gnu.org/archive/html/qemu-devel/2012-11/msg02400.html

>
> Martin
>




More information about the libvir-list mailing list