Re: HVM direct boot broken in xen-unstable

["Daniel P. Berrange" <berrange@redhat.com>]

On Sat, Jul 19, 2008 at 12:52:07AM +0000, Byrne, John (HP Labs) wrote:
> Hi!
> 
> On x86_64, changeset 18081, running/building on rhel5, trying to use
> the HVM direct boot causes the domain to reboot immediately and then
> the log says the domain is restarting too rapidly. No obvious hints 
> as to where the problem is. If I build the in-tree ioemu code, things
> work. Any clues as to where to look or how to get some useful debugging
> output?

It appears the code is missing from the external ioemu code. The original
changesets for HVM kernel boot were

changeset:   16959:17cce0554151
user:        Keir Fraser <keir.fraser@citrix.com>
date:        Fri Feb 01 11:14:53 2008 +0000
summary:     Direct Linux boot: Support booting relocatable Linux kernels.

changeset:   16960:67ca9c37ef02
user:        Keir Fraser <keir.fraser@citrix.com>
date:        Fri Feb 01 11:16:37 2008 +0000
summary:     Direct Linux boot: Support booting non-relocatable Linux kernels.


Part of the first changeset is missing, and all of the second. So the
kernel will be getting overwritten by the HVM firmware hence the crashes
of the guest you see

Daniel
-- 
|: Red Hat, Engineering, London   -o-   http://people.redhat.com/berrange/ :|
|: http://libvirt.org  -o-  http://virt-manager.org  -o-  http://ovirt.org :|
|: http://autobuild.org       -o-         http://search.cpan.org/~danberr/ :|
|: GnuPG: 7D3B9505  -o-  F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|