New KVM code allows KVM hosts to emulate a PMU on AMD CPUs, but migration support for the PMU is not available.
KVM guests will detect a PMU when running on RHEL-7.2 hosts, and will be able to use it. However, the PMU state won't be migrated if the VM is migrated to another host. So the PMU is not fully functional if the VM is migrated.
Workaround (if any):
Using the PMU in a KVM guest is still not supported, so users are advised to not rely on performance counters being fully functional.
No PMU-related errors if the PMU is not used.
Bug 1076010 - failed to access perfctr error shown after VM clean install (without -cpu host)