Migrating Xen2 to Xen3?

[Hubert Feyrer <hubert%feyrer.de@localhost>]

I know NetBSD on Xen3 is not "there" yet. Still, my question is:
what effort is needed when it's needed to migrate a Xen2 to a Xen3
setup, assuming NetBSD in Dom0 and DomU:

Will simply replacing the Xen image, the NetBSD kernel(s) and the 
Xen-tools work? Or what's the migration path? Full install?


 - Hubert