Re: [Xen-users] Xen and PPC and ARM

[Tomasz Chmielewski <mangoo@xxxxxxxx>]

Mark Williamson schrieb:
> > > 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.
I meant running a 64bit guest running on a 32bit host sitting on a 32bit 
hardware.
It's not possible, unless emulated.


--
Tomasz Chmielewski
http://wpkg.org

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