This posting is actually responding recent entry in Martin's Blog
Martin states:-
Then I tried out a number of current linux distributions, but except for openSuSE none had a dom0 kernel out of the box which really is a shame. Seems I need to look more closely into KVM with virtio support
Article bellow explains that due to efforts of Jan Beulich and Andy Lyon xenified aka Suse Kernel 2.6.31.8(9) may be built on any Linux and along with the most recent stable Xen Hypervisor port support OpenSolaris PV Guests. I also choosed Ubuntu 9.10 Server with Libvirt 0.7.0 capabilities, actually virsh capabilities, been connected to Xen 3.4.3 Hypervisor one more time reproduce nice schema of John Levon of OSOL PV Guest install at Linux Dom0.