Re: [Xen-users] RHEL4 as 64-bit HVM guest -- not starting in 64 bit mode

[Hugo Mills <hugo@xxxxxxxxxxxxx>]

On Mon, Nov 06, 2006 at 01:19:23PM +0100, Petersson, Mats wrote:
> > -----Original Message-----
> > From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> > [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Hugo Mills
> > Sent: 06 November 2006 11:05
> > To: xen-users@xxxxxxxxxxxxxxxxxxx
> > Subject: [Xen-users] RHEL4 as 64-bit HVM guest -- not 
> > starting in 64 bit mode
> > 
> >    I'm trying to install RHEL 4 on an HVM (Core 2 Duo). However, when
> > the RHEL installer tries to start the kernel, it complains that the
> > CPU doesn't support extended mode, and that I should use a 32-bit
> > installer.
> > 
> >    However:
> > 
> > hrm@willow:~$ sudo xm info | grep xen_caps
> > xen_caps               : xen-3.0-x86_64 hvm-3.0-x86_32 
> > hvm-3.0-x86_32p hvm-3.0-x86_64
> > 
> >    Is there some magic I need in the config file for the domain to
> > tell it that it's a 64-bit guest?
> 
> Try some combination of these set to one:
> apic
> acpi
> pae
> 
> All of them should work. I'd also, if you're not doing so already, use
> the latest 3.0.3, as previous versions are known to not work right for
> 64-bit at least sometimes.

   OK, I think I've found the problem. It's related to the device
model configuration. I had previously tried to map one LV to /dev/hda1
and another LV to /dev/hda2. If I simply map each to a different full
hard disk image, everything works.

   It seems odd that I should get an error about not being able to
enter 64-bit mode as a result of a mis-configured hard disk image, but
that's the only conclusion I can draw.

   Thanks for your help, Mats.

   Hugo.

-- 
=== Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk ===
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                         with just a kind word.

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