This question is asked in regards of post
http://wiki.xenproject.org/wiki/Xen_via_libvirt_for_OpenStack_juno
One of stopper issues seems to be commit :-
http://git.qemu.org/?p=qemu.git&a=search&h=2001e197cf68a4f262a5a0...
So, the question is mostly related with RDO Openstack release on F22 having qemu version
2.3.0-rc1.
Another concern is requirement to install package "nova-compute-xen" on compute
node.
Thanks.
Boris.