On Wed, Nov 2, 2022 at 5:55 PM Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote: > > On 10/29/22 00:43, Sean Christopherson wrote: > >>> Checking 'dat' doesn't restrict counter 0, it skips printing if the guest (or host) > >>> is writing '0', e.g. it would also skip the case you encountered where the host is > >>> blindly "restoring" unused MSRs. > >> The VMM is only blind because KVM_GET_MSR_INDEX_LIST poked it in the > >> eye. It would be nice to have an API that the VMM could query for the > >> list of supported MSRs. > > That should be a fairly easy bug fix, kvm_init_msr_list() can and should omit PMU > > MSRs if enable_pmu==false. > > Aaron, are you going to send a patch for this? > > Thanks, > > Paolo > Yes, I can do that.
