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xen-users
Re: [Xen-users] 32bit domU on 64 bit dom0
On Tue, Aug 14, 2007 at 03:33:53AM +0100, Mark Williamson wrote:
> > Yes it is possible. But you must have a kernel with the 3.1 patches
> > on dom0 and on dom1.
>
> The 32-bit domU shouldn't need 3.1 patches to run on 64-bit Xen. Any older
> domU kernel should work so long as it supports PAE.
I think there's a slight complication with that - any 32-bit PAE domU
should work *provided* the Dom0 tools are new enough.
IIRC the XenD back-compat change to allow 32-bit guests earlier than Xen 3.1
to work wasn't made in time for the 3.1 release. In particular you need to
have changesets 15074 & 15075 - they should backport to 3.1 pretty easily
changeset: 15074:5c7a1e3abd54
user: Ian Campbell <ian.campbell@xxxxxxxxxxxxx>
date: Tue May 15 17:54:48 2007 +0100
files: tools/libxc/xc_dom.h tools/libxc/xc_dom_x86.c
tools/python/xen/lowlevel/xc/xc.c
description:
[BUILDER] Propagate the native protocol ABI for a guest out of the
domain builder and in to python code.
This knowledge will be useful to allow us to pre-seed the protocol
field in a VBD entry in xenstore which will allow us to run older
kernels in a 32on64 mixed environment.
changeset: 15075:5efb46bfbcac
user: Ian Campbell <ian.campbell@xxxxxxxxxxxxx>
date: Tue May 15 19:00:48 2007 +0100
files: tools/python/xen/xend/XendDomainInfo.py
tools/python/xen/xend/server/DevController.py
description:
[XEND] Write the default ABI to the xenstore entry for each frontend
device.
This allows to run older kernels in a 32on64 mixed environment.
Regards,
Dan.
--
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