Xen Hypervisor for PVH support on x86_64 only.
Technical Preview

Support is limited to the following:
PVH guest support
Xl/libxl based Xen management toolstack
Live migration of guests
Guests running in cpupools using the credit scheduler
XenStore running as a stubdom
Dom0 running in PVH mode

This project Does Not support the following:
PV guest
HVM guest
QEMU based backend (so no Xen-enabled qemu needed at all)
Libvirt (no 'virsh' management)
PCI passthrough