Xen users - Sep 2007 - Hypervisor kernel confusion

I''m a bit confused about the kernel used by the Xen hypervisor. 
I''ve
just installed a 30 day trial of XenSource''s Enterprise edition
software
on a Sun Fire 4600.

It was my understanding that it would install a 64 bit hypervisor, 
however, upon running uname -a on my machine, I am told that I am 
running a i686 kernel.  Did I miss something?  How does one use a 64 bit 
kernel?

Thanks,
-Eric

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Eric Ross <eross@anl.gov> writes:
> I''m a bit confused about the kernel used by the Xen hypervisor. 
I''ve
> just installed a 30 day trial of XenSource''s Enterprise edition
> software on a Sun Fire 4600.
>
> It was my understanding that it would install a 64 bit hypervisor,
> however, upon running uname -a on my machine, I am told that I am
> running a i686 kernel.  Did I miss something?  How does one use a 64
> bit kernel?
>
> Thanks,
> -Eric
Look at "xm info":

machine                : x86_64
xen_caps               : xen-3.0-x86_64 hvm-3.0-x86_32 hvm-3.0-x86_32p
hvm-3.0-x86_64

I believe only a 64bit hypervisor will list x86_64 under "xen_caps".
If so you can start a 64bit kernel just like a 32bit kernel. Just put
it in /boot and use it.

MfG
        Goswin

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On Mon September 24 2007 8:56:01 pm Goswin von Brederlow
wrote:
> Eric Ross <eross@anl.gov> writes:
> > It was my understanding that it would install a 64 bit hypervisor,
> > however, upon running uname -a on my machine, I am told that I am
> > running a i686 kernel.  Did I miss something?  How does one use a 64
> > bit kernel?
>
> Look at "xm info":
>
> machine                : x86_64
> xen_caps               : xen-3.0-x86_64 hvm-3.0-x86_32 hvm-3.0-x86_32p
> hvm-3.0-x86_64
Yes, the hypervisor is 64 bits, but I forget what dom0 XenSource v4 is using - 
the ''uname'' is telling you the architecture of the dom0.

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