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SubjectRe: [Xen-devel] [RFC PATCH] Boot PV guests with more than 128GB (v1) for 3.7
On Fri, 2012-07-27 at 08:34 +0100, Jan Beulich wrote:
> >>> On 26.07.12 at 22:47, Konrad Rzeszutek Wilk <> wrote:
> > 2). Allocate a new array, copy the existing P2M into it,
> > revector the P2M tree to use that, and return the old
> > P2M to the memory allocate. This has the advantage that
> > it sets the stage for using XEN_ELF_NOTE_INIT_P2M
> > feature. That feature allows us to set the exact virtual
> > address space we want for the P2M - and allows us to
> > boot as initial domain on large machines.
> And I would hope that the tools would get updated to recognize
> this note too, so that huge DomU-s would become possible as
> well.

Does this help us with >160GB 32 bit PV guests too? I'm guessing not
since the real limitation there is the relatively small amount of kernel
address space.

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