Re: [PATCH 1/2] x86/hyperv: Allow guests to enable InvariantTSC

[Andrea Parri]

On Thu, Oct 03, 2019 at 05:52:00PM +0200, Andrea Parri wrote:
> If the hardware supports TSC scaling, Hyper-V will set bit 15 of the
> HV_PARTITION_PRIVILEGE_MASK in guest VMs with a compatible Hyper-V
> configuration version.  Bit 15 corresponds to the
> AccessTscInvariantControls privilege.  If this privilege bit is set,
> guests can access the HvSyntheticInvariantTscControl MSR: guests can
> set bit 0 of this synthetic MSR to enable the InvariantTSC feature.
> After setting the synthetic MSR, CPUID will enumerate support for
> InvariantTSC.
> 
> Signed-off-by: Andrea Parri <parri.andrea@xxxxxxxxx>

Subject should have been "[PATCH] ...", i.e., there is no 2/2 planned
(not for this patchset at least).  Please let me know if I should re-
submit with the subject fixed.

Thanks,
  Andrea