On Sat, May 05, 2007 at 04:00:24PM -0400, Ernesto Bascon wrote:
> 1. Is it feasible to implement something like "User mode Linux" on
> NetBSD;

Yes.

> id est, is it possible to create a NetBSD port to run on top
> of NetBSD?

Yes, of course. You can already do that with emulators like GXemul
("pkgsrc/emulators/gxemul") or QEMU ("pkgsrc/emulators/qemu").

Besides that there's also support for Xen paravirtualization in NetBSD.

> What would be the difficult things to do a port like that?

It depends how you want the emulation to work. If you don't want to
emulate any hardware it will be more work. If you want to emulate
some piece of hardware that can run NetBSD you already done.

	Kind regards

-- 
Matthias Scheler                                  http://zhadum.org.uk/