Re: [PATCH v2 0/7] x86/kvm/hyper-v: Implement KVM_GET_SUPPORTED_HV_CPUID

[Paolo Bonzini]

On 17/12/18 11:30, Vitaly Kuznetsov wrote:
>> Queued, thanks.  I moved this above the direct EOI series so that
>> KVM_CAP_HYPERV_STIMER_DIRECT need not exist at any point of the history.
>>
> Thanks! Just to make sure (and to conclude our discussion with Roman):
> with your Qemu maintainer hat on, do you agree with the design decision
> that KVM_GET_SUPPORTED_HV_CPUID's output value changes when
> KVM_CAP_HYPERV_ENLIGHTENED_VMCS gets enabled? This differs from
> KVM_GET_SUPPORTED_CPUID (where we always list all feature bits even if
> they require explicit enablement)?

It doesn't really matter, since the old capability cannot be removed.
If you want to change it with a patch on top, that's also okay with me.

Paolo