[libvirt] [PATCH 0/2] qemu: Fix upgrade with running domains with host-model CPUs

[Ján Tomko]

On Thu, Dec 07, 2017 at 02:20:05PM +0100, Jiri Denemark wrote:
>When upgrading old libvirt on a host with EPYC host CPU (or any other
>CPU which was added to cpu_map.xml in newer libvirt releases), we would
>replace host-model CPU definition for running domains to EPYC even
>though a different CPU model was used to start the domain. And sync old
>libvirt doesn't know about EPYC, migrating the domain to another host
>running the same old libvirt would be impossible.
>
>https://bugzilla.redhat.com/show_bug.cgi?id=1521202
>
>Jiri Denemark (2):
>  qemu: Separate fetching CPU definitions from filling qemuCaps
>  qemu: Make sure host-model uses CPU model supported by QEMU
>
> src/qemu/qemu_capabilities.c | 59 +++++++++++++++++++++++++++-----------------
> src/qemu/qemu_capabilities.h |  1 +
> src/qemu/qemu_process.c      | 30 ++++++++++++++++++++++
> 3 files changed, 68 insertions(+), 22 deletions(-)

ACK series

Jan
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