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Re: [Xen-users] Mixing architectures--64bit master, 32bit clients?

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Mixing architectures--64bit master, 32bit clients?
From: Mark Williamson <mark.williamson@xxxxxxxxxxxx>
Date: Tue, 13 Mar 2007 18:24:23 +0000
Cc: Steven Timm <timm@xxxxxxxx>
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> Has anyone successfully run the 64-bit Xen hypervisor (open source
> version) with
> 32-bit xen virtual machines? If so, are there any pointers to a
> how-to of what to do, and things you should avoid?

This ought to work for HVM virtual machines just fine (you can run 32-bit PAE 
or non-PAE guests just fine).

For paravirtualised guests, 3.0.4 requires them to have the same paging model 
(i.e. 64-bit / 32-bit, and for the latter PAE or non PAE).

xen-unstable has (I believe) support for mixing paravirtualised 32-bit PAE 
guests and 64-bit paravirtualised guests on a 64-bit Xen.  Dom0 can also be 
32-bit in this scenario.

Cheers,
Mark

-- 
Dave: Just a question. What use is a unicyle with no seat?  And no pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!

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