Comment 6 for bug 1322702

This is really a bug in libvirt, not openstack which is fixed in upstream libvirt

commit 802f157e8c7afaf4971b82705f67519939d2da0c
Author: Jiri Denemark <email address hidden>
Date: Mon Jan 27 17:03:55 2014 +0100

    cpu: Fix VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES

    https://bugzilla.redhat.com/show_bug.cgi?id=1049391

    VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES flag for virConnectBaselineCPU
    did not work if the resulting guest CPU would disable some features
    present in its base model. This patch makes sure we won't try to add
    such features twice.