Comment 12 for bug 1400315

Reviewed: https://review.openstack.org/140089
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=12cf893fd9bc787d2c5c6ef0a8ca0f81582ead8a
Submitter: Jenkins
Branch: master

commit 12cf893fd9bc787d2c5c6ef0a8ca0f81582ead8a
Author: Daniel P. Berrange <email address hidden>
Date: Mon Dec 8 14:30:06 2014 +0000

    libvirt: enable hyperv enlightenments for windows guests

    All windows guests (ie os_type=windows) now get the following
    enabled

           <features>
             <hyperv>
               <relaxed state='on'/>
               <vapic state='on'/>
               <spinlocks state='on' retries='8191'/>
             </hyperv>
           <features/>

    if running a new enough libvirt and QEMU

    Closes-bug: #1400315
    Change-Id: Icd0fe9bda6402d9bf7a4bab8077f0ce755703999