RE: [Xen-devel] HVM direct boot broken in xen-unstable

["Byrne, John (HP Labs)" <john.l.byrne@xxxxxx>]

Daniel, Ian:

The old ioemu version functions without the "loader" line which I was missing 
in my config. I'm testing to make sure that isn't the issue I'm seeing with the 
git version.

John


> -----Original Message-----
> From: Daniel P. Berrange [mailto:berrange@xxxxxxxxxx]
> Sent: Monday, July 21, 2008 8:52 AM
> To: Ian Jackson
> Cc: Byrne, John (HP Labs); xen-devel@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-devel] HVM direct boot broken in xen-unstable
>
> On Mon, Jul 21, 2008 at 04:46:17PM +0100, Ian Jackson wrote:
> > Daniel P. Berrange writes ("Re: [Xen-devel] HVM direct boot broken in
> xen-unstable"):
> > > 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?
> >
> > Byrne, could you send me a copy of your config file so I can
> reproduce
> > this ?  Also, some idea of how you made (or how you obtained) the
> > kernel image and initramfs.  I don't think I've ever done a direct
> > kernel boot using this code (which is in patches supplied by Daniel)
> > and offhand I can't seem to find the documentation.
>
> It works in the same way as booting PV off kernel+initrd - basically
> take a HVM guest config file and add
>
>   loader="/usr/lib/xen/bin/hvmloader"
>   kernel="/path/to/vmlinuz"
>   ramdisk="/path/to/initrd"
>
> The vmlinuz & initrd  would typically be the ones for installation
> of your distro, eg The $URL/images/pxeboot/ files for Fedora/RHEL
>
> http://download.fedora.redhat.com/pub/fedora/linux/releases/9/Fedora/i3
> 86/os/images/pxeboot/
>
> It should boot your kernel & initrd and not pay attention to hardisk
> or CDROM devices.
>
> As mentioned in the original commit logs, older kernels need to use the
> evil helper, newer kernels should 'just work' (thanks to the
> relocatable
> kernel support).
>
> Daniel
> --
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