Re: [Qemu-devel] [PATCH 1/1] x86: add CPU flags supported inside libvirt

[Paolo Bonzini]

On 20/07/19 00:05, Eduardo Habkost wrote:
>> Actually KVM does not mark it as supported:
>>
>>         const u32 kvm_cpuid_7_0_ebx_x86_features =
>>                 F(FSGSBASE) | F(BMI1) | F(HLE) | F(AVX2) | F(SMEP) |
>>                 F(BMI2) | F(ERMS) | f_invpcid | F(RTM) | f_mpx | F(RDSEED) |
>>                 F(ADX) | F(SMAP) | F(AVX512IFMA) | F(AVX512F) | F(AVX512PF) |
>>                 F(AVX512ER) | F(AVX512CD) | F(CLFLUSHOPT) | F(CLWB) | 
>> F(AVX512DQ) |
>>                 F(SHA_NI) | F(AVX512BW) | F(AVX512VL) | f_intel_pt;
> We can still add the feature name if we also set it on
> .unmigratable_features, but I don't see why it would be useful.
> Is anybody working to support exposing RDT-M to guests?

I don't think so.

Paolo