Re: [Xen-devel] Question about implementation of 32-bit guests on64-bit hypervisor (IDT-related)

[Mark Williamson <mark.williamson@xxxxxxxxxxxx>]

> > > guests on top of the 64-bit hypervisor?
> >
> > 32-bit PV guests are restricted to using the low 128GB of physical
> > memory.
> > There's not even that restriction for 32-bit HVM guests.
>
> We could even use shadow translate mode to get around the 128GB
> restriction, though at some performance cost. I guess you'd switch the
> guest to shadow mode if you've run out of memory below 128GB.

That's not possible right now, though, right?  Shadowing PV guests was still 
broken IIRC?

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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