On Tue, 2025-01-21 at 15:59 +0000, Paul Durrant wrote: > On 21/01/2025 15:44, Sean Christopherson wrote: > [snip] > > > > I think it's ok to keep the Hyper-V TSC page in this case. It's not that the Xen > > PV clock is truly unstable, it's that some guests get tripped up by the STABLE > > flag. A guest that can't handle the STABLE flag has bigger problems than the > > existence of a completely unrelated clock that is implied to be stable. > > > > Agreed. > > > > I don't know if anyone combines Xen and Hyper-V emulation capabilities for > > > the same guest on KVM though.) > > > > That someone would have to be quite "brave" :-D > > Maybe :-) Xen itself does offer some Hyper-V enlightenments, and we might reasonably expect KVM-based hypervisors to offer the same. We explicitly do account for the KVM CPUID leaves moving up to let the Hyper-V ones exist. I don't recall if Xen's Hyper-V support includes the TSC page though.
Attachment:
smime.p7s
Description: S/MIME cryptographic signature
