Subject: Re: Xen3 domU functionnal
To: Geert Hendrickx <>
From: Manuel Bouyer <>
List: port-xen
Date: 03/21/2006 13:13:59
On Mon, Mar 20, 2006 at 11:55:49PM +0100, Geert Hendrickx wrote:
> On Mon, Mar 20, 2006 at 11:41:33PM +0100, Manuel Bouyer wrote:
> > Hi,
> > I commited some bits for Xen3 support this week-end, especially a virtual
> > block device frontend driver. A few things need some more work (like
> > making dynamic attach/detach of devices after boot work), but NetBSD
> > should now be functionnal on Xen3 with block and network devices.
> > I added XEN3_U and INSTALL_XEN3_U kernel config files, and integrated
> > them as part of the release build process.
> > 
> > There are kernels available from
> How much is Xen backward/forward compatible?  e.g. once there is support
> for NetBSD as dom0 on Xen 3, can I run a NetBSD 3.0 domU (i.e. for Xen 2)
> with it?  

No, you'll need a Xen-3 kernels for domU too. But I plan to backport
Xen3 domU support to netbsd-3 (I will do this before I start hacking
on dom0 support, to make things easier).

Manuel Bouyer <>
     NetBSD: 26 ans d'experience feront toujours la difference