> Due to the way Xen works, you need NetBSD/xen in all Domains.

This is not true, you can mix NetBSD and Linux domains on the same machine.
You can run NetBSD as domain0 on Xen 1.2, which is the Xen version the
NetBSD/xen port in the NetBSD cvs repository (-current as well as -2.0)
works with.  On Xen 2.0, for which there's a NetBSD/xen port in the Xen
bitkeeper repository, you can only run NetBSD in unprivileged domains.
There's only support for running Linux as domain0 on Xen 2.0.

     christian