This bug was fixed in the package libvirt - 1.2.12-0ubuntu13
--------------- libvirt (1.2.12-0ubuntu13) vivid-proposed; urgency=medium
* 9038-qemu-fix-setting-of-VM-CPU-affinity-with-TCG (LP: #1439280)
-- Serge Hallyn <email address hidden> Wed, 13 May 2015 10:48:53 -0500
This bug was fixed in the package libvirt - 1.2.12-0ubuntu13
---------------
libvirt (1.2.12-0ubuntu13) vivid-proposed; urgency=medium
* 9038-qemu- fix-setting- of-VM-CPU- affinity- with-TCG (LP: #1439280)
-- Serge Hallyn <email address hidden> Wed, 13 May 2015 10:48:53 -0500