Re: [PATCH] KVM: VMX: Nop emulation of MSR_IA32_POWER_CTL

Paolo Bonzini
2019-04-16T15:23:34Z

On 16/04/19 17:21, Liran Alon wrote:
>
> But in addition, this MSR emulation I think is still required. As
> guests may still legitimately use this MSR to enable C1E even when
> MWAIT extensions is not supported. This is because just executing
> HLT/MWAIT on all cores in package allows auto transition to C1E.
>
> So to conclude I think this KVM patch is still required and that we
> need a QEMU patch in addition. Do you agree?
>

Yes, I agree and I have queued the patch.

Paolo