Re: [libvirt] [PATCH] cpu_ppc64: Add support for host-model on POWER9

On Thu, 2017-05-18 at 14:40 +0200, Jiri Denemark wrote: > Signed-off-by: Jiri Denemark <jdenemar(a)redhat.com&gt; > --- >  src/cpu/cpu_ppc64.c                                |  8 ++++---- >  .../qemuxml2argv-pseries-cpu-compat-power9.args    | 24 ++++++++++++++++++++++ >  .../qemuxml2argv-pseries-cpu-compat-power9.xml     | 21 +++++++++++++++++++ >  tests/qemuxml2argvtest.c                           |  7 +++++++ >  tests/testutilsqemu.c                              | 13 +++++++++++- >  tests/testutilsqemu.h                              |  1 + >  6 files changed, 69 insertions(+), 5 deletions(-) >  create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-pseries-cpu-compat-power9.args >  create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-pseries-cpu-compat-power9.xml Finally had a chance to test this. The patch itself looks okay; however, on an actual POWER9 host, I get   qemu-kvm: can't apply global   host-powerpc64-cpu.compat=power9: Invalid compatibility   mode "power9" and   qemu-kvm: Compatibility PVR 0x0f000004 not valid for CPU when trying power9 and power8 compat modes respectively. David, are these known issues in QEMU? Are they being tracked?

I don't see much point in updating libvirt to cope with these new compat modes when QEMU itself doesn't.