[PATCH v8 4/7] KVM: x86: Report host tsc and realtime values in KVM_GET_CLOCK

[Oliver Upton]

On Fri, Oct 1, 2021 at 7:41 AM Paolo Bonzini <pbonzini at redhat.com> wrote:
>
> On 01/10/21 16:39, Paolo Bonzini wrote:
> > On 16/09/21 20:15, Oliver Upton wrote:
> >> +    if (data.flags & ~KVM_CLOCK_REALTIME)
> >>           return -EINVAL;
> >
> > Let's accept KVM_CLOCK_HOST_TSC here even though it's not used; there
> > may be programs that expect to send back to KVM_SET_CLOCK whatever they
> > got from KVM_GET_CLOCK.
>
> Nevermind, KVM_SET_CLOCK is already rejecting KVM_CLOCK_TSC_STABLE so no
> need to do that!

Yeah, I don't know the story on the interface but it is really odd
that userspace needs to blow away flags to successfully write the
clock structure.

--
Thanks,
Oliver