Re: [Xen-devel] [PATCH 1/2] x86/EFI: avoid IOMMU faults on [_end, __2M_rwdata_end)

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 17/03/17 15:15, Jan Beulich wrote:
> Commit c9a4a1c419 ("x86/layout: Correct Xen's idea of its own memory
> layout") didn't go far enough with the conversion, causing IOMMU faults
> when memory from that range was handed to a domain. We must not make
> this memory available for allocation (the change is benign to xen.gz at
> this point in time).
>
> Note that the change to tboot_shutdown() is fixing another issue at
> once: As it looks, the function so far skipped all memory below the Xen
> image.
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

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