Otherwise going host-passthrough -> custom can cause libvirt validation error due to libvirt fills the default value(migratable='on') for the host-passthrough in domain XML. Signed-off-by: Lin Ma <lma@xxxxxxxx> --- virtinst/domain/cpu.py | 1 + 1 file changed, 1 insertion(+) diff --git a/virtinst/domain/cpu.py b/virtinst/domain/cpu.py index e40c5307..5de42b4e 100644 --- a/virtinst/domain/cpu.py +++ b/virtinst/domain/cpu.py @@ -358,6 +358,7 @@ class DomainCpu(XMLBuilder): def set_model(self, guest, val): log.debug("setting cpu model %s", val) + self.migratable = None if val: self.mode = "custom" if not self.match: -- 2.26.2