On Mon, 20 May 2019 at 18:30, Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote: > > On 17/05/19 10:49, Wanpeng Li wrote: > > From: Wanpeng Li <wanpengli@xxxxxxxxxxx> > > > > Allow guest reads CORE cstate when exposing host CPU power management capabilities > > to the guest. PKG cstate is restricted to avoid a guest to get the whole package > > information in multi-tenant scenario. > > Hmm, I am not sure about this. I can see why it can be useful to run > turbostat in the guest, but is it a good idea to share it with the Yeah. > guest, since it counts from machine reset rather than from VM reset? I also saw amazon expose these in their nitro c5 instance. > > Maybe it could use a separate bit for KVM_CAP_X86_DISABLE_EXITS? It could be. Regards, Wanpeng Li
