Re: [Qemu-devel] [PATCHv5 4/4] ppc: Rework CPU compatibility testing across migration

2017-06-14 Thread Greg Kurz
On Fri, 2 Jun 2017 13:15:07 +1000 David Gibson wrote: > Migrating between different CPU versions is a bit complicated for ppc. > A long time ago, we ensured identical CPU versions at either end by > checking the PVR had the same value. However, this breaks under

[Qemu-devel] [PATCHv5 4/4] ppc: Rework CPU compatibility testing across migration

2017-06-01 Thread David Gibson
Migrating between different CPU versions is a bit complicated for ppc. A long time ago, we ensured identical CPU versions at either end by checking the PVR had the same value. However, this breaks under KVM HV, because we always have to use the host's PVR - it's not virtualized. That would mean