On 11/27/2017 12:40 PM, Paolo Bonzini wrote: > Only on new guests that know PV_DEDICATED, which makes it a bit flaky. > I'd rather document that you should not enable KVM_FEATURE_PV_UNHALT if > you block HLT. Yes, PV_UNHALT and disabled HLT exiting shouldn't be combined. I'll add that to the documentation. Regards Jan