12 Feb
2026
12 Feb
'26
1:50 p.m.
On Thu, Feb 05, 2026 at 14:18:42 +0100, Jean-Louis Dupond wrote:
Since commit 99a637a8 in qemu 10.0, the way the cmp_legacy flag is reported changed. The same way as happend with the 'ht' flag in commit c6bd2dd634208, which was fixed in libvirt since commit ba16113c.
This causes migrations from a hypervisor running a qemu version before that commit to a hypervisor running qemu after that commit fails with the following error: guest CPU doesn't match specification: extra features: cmp_legacy
We can just ignore this flag, just like we did with the 'ht' flag.
Signed-off-by: Jean-Louis Dupond <jean-louis@dupond.be>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com> ans pushed. Thanks.