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Re: [Xen-devel] [PATCH v2 3/3] x86/setup: remap Xen image up to PFN_DOWN(__pa(_end))

>>> On 04.12.17 at 11:24, <daniel.kiper@xxxxxxxxxx> wrote:
> Current limit, PFN_DOWN(xen_phys_start), introduced by commit b280442
> (x86: make Xen early boot code relocatable) is not reliable. Potentially
> its value may fall below PFN_DOWN(__pa(_end))

Under what (perhaps just theoretical) conditions? It seems to imply
to me that we'd be moved Xen downwards if this was to happen, in
which case I'd suggest to simply skip the relocation instead (we
really only ever want to move Xen upwards).


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