RE: [Xen-users] Mixture of 32/64 bit VMs

["Petersson, Mats" <Mats.Petersson@xxxxxxx>]

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Gary W. Smith
> Sent: 16 January 2007 18:02
> To: Goswin von Brederlow; Rene Castillo
> Cc: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: RE: [Xen-users] Mixture of 32/64 bit VMs
> 
> > 
> > Why not run a 64bit domU with 32bit userland? At least 
> works just fine
> > in that setup and you even gain another Gb address space for your
> > programms (3.99G instead of 3G).
> > 
> > MfG
> >         Goswin
> > 
> 
> 
> I've seen this response a few times and I'm interested in 
> learning more
> about 32bit userland over 64bit DomU.  Do you have some links to some
> example configurations (preferably step by step guides)?

99.9% of all 32-bit apps work straight out of the box on 64-bit OS
[except for some particular distros that doesn't, by default, come with
the 32-bit compatibility mode - presumably assuming that their customers
don't have any precompiled software to run on the system]. 

There are exceptions, but for almost everything, you should be able to
just run a 64-bit kernel & tools with any 32-bit app. If you have
PARTICULAR apps in mind (particularly ones that don't come with
source-code), you should probably research whether those will work in a
64-bit environment. 

--
Mats



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