In nova/virt/libvirt/driver.py the _compare_cpu() function checks the
cpu features using self._conn.compareCPU().
Is this actually valid? The kvm processes don't seem to have the
"--cpu" option specified, so we should get a compatible subset of cpu
features from qemu. If that's the case then the host cpu features
shouldn't really matter, right?
We're running Havana and hitting live-migration issues between Sandy
Bridge and Ivy Bridge due to some differences in the host processor
flags. Just wondering what the expected behaviour is.
Chris
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