From Mr. Teo En Ming who is doing great Xen work…
I have integrated the open source Xen hypervisor 3.4.3 RC1-pre and Jeremy Fitzhardinge’s pv-ops dom0-patched kernel 188.8.131.52 into my 64-bit build of ChromiumOS. With the integrated Xen virtualization support, you can now create and run virtual machines or guest operating systems in Google’s Chromium OS. If you do not have a need to create virtual machines, you can simply run ChromiumOS64 as a Xen domU virtual machine.
To run Windows XP, Windows Vista, Windows 7, Windows 2000, Windows Server 2003 and/or Windows Server 2008 as a hardware virtual machine (HVM), you need to have a processor with hardware virtualization support, e.g. Intel VT-x or AMD Pacifica.
To enable PCI/PCI-e and/or VGA pass-through to HVM virtual machines, you need to have a motherboard with a supporting chipset capable of Intel Virtualization Technology for Directed Input/Output (VT-d). VGA passthrough is more involved and may require you to modify the code to properly support your specific PCI Express x16 graphics card and recompile the Xen hypervisor and Xen tools.
Download your copy now! Please note that this is a pre-alpha release.