[Libvir] libvirt not compatible with Xen-unstable hypercall API ?

While trying to verify any potential problem between with libvirt & Xen PPC port. I've found that libvirt currently in CVS attempts to determine what hypercall version to follow, by looking at the hypervisior version. It determines that this is some arbitrary versioning "v2" of the hypercall api. This starts on line 1250 of xen_internal.c. This does not appear to be compatible with current Xen-Unstable from testing and trying to hack it up. Has any work been done toward making libvirt compatible with Xen-unstable that has not been included? Or is it waiting till the offical 3.0.5 release? We are attempting to ensure that Xen PPC works with libvirt. Though we have to use the latest hypercall api. Thanks, Jerone