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xen-users
Re: [Xen-users] Xen and PPC and ARM
> > Supported hardware platforms:
> >
> > * i386
> > * x86_64
> > * IA64
> >
> > Support is developing for the platforms:
> >
> > * PPC (stalled)
At this stage I'd rather say "unknown", because I really don't know what's
happening.
> > * ARM (poor)
I'd say "in progress" - it's not available in mainline Xen yet, but companies
do seem to have some sort of commitment to making it work.
> > * MIPS port mentioned
No idea if this was mentioned seriously, or just tossed about as an idea.
> > Can I run a 64-bit HVM-domain in a 32-bit host system?
> >
> >
> >
> > Dom0 domU
> > 32 32 Ok
> > 32 64 ??
> > 64 32 Ok
> > 64 64 Ok
> >
> >
> > As far as I can understand it is possible
> > but hypervisor (and domain0) should be PAE-enabled.
>
> No, it's not possible - how should that work (and why would you want to
> do it)?
>
> If you really need to start 64bit guests on a 32bit host, you may have
> some luck with Qemu emulation, though.
You can, in fact, run a 32-bit PAE dom0 and a 64-bit domU, provided Xen itself
is 64-bit. This might even perform better than using a 64-bit dom0, due to
various differences between x86_64 and x86_32 - it's crazy stuff.
There used to be some limitations on whether suspend / resume / live migration
worked when dom0 and domU were in different x86 modes. This restriction may
have been lifted since I last saw it mentioned.
Cheers,
Mark
--
Push Me Pull You - Distributed SCM tool (http://www.cl.cam.ac.uk/~maw48/pmpu/)
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