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Re: [Xen-users] 32bit domU on 64 bit dom0

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] 32bit domU on 64 bit dom0
From: Dr A V Le Blanc <LeBlanc@xxxxxxxxx>
Date: Wed, 8 Aug 2007 08:04:40 +0100
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On Tue 07 Aug 2007 at 12:32:11 -0700, Dave Durkee <dave@xxxxxxxxxxxxxxxxxx> 
wrote:
> I have been reading the list this morning about this topic and I am
> unclear if this can happen.  With version 3.0.x or 3.1 of Xen is this
> possible on a non 'VT' h/w?

Yes it is possible.  But you must have a kernel with the 3.1 patches
on dom0 and on dom1.

tweed # uname -a
Linux tweed 2.6.18-xen #1 SMP Thu Jul 19 10:09:32 BST 2007 x86_64 GNU/Linux
tweed 07:58:33 > arch
x86_64
tweed # xm list
Name                                      ID   Mem VCPUs      State   Time(s)
Domain-0                                   0  6012     4     r-----   1224.2
bohr                                       1  1024     1     -b----    229.7
planck                                     2  1024     1     -b----    295.1
tweed # ssh planck
...
planck # arch
i686
planck # uname -a
Linux planck 2.6.18-xen #1 SMP Wed Jul 18 15:38:55 BST 2007 i686 GNU/Linux

The other domain (bohr) is running a 64-bit system like the dom0,
while this one (planck) is running a 32-bit system.  This is Xen
version 3.1.  The hardware has virtualisation capability switched
off in the BIOS.  All domains are paravirtualised.

     -- Owen

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