[Intel-gfx] i915 "GPU HANG", bisected to a2daa27c0c61 "swiotlb: simplify swiotlb_max_segment"

[Christoph Hellwig]

On Tue, Oct 18, 2022 at 04:53:50PM +0200, Juergen Gross wrote:
>> If we don't need the IS_ENABLED is not needed I'm all for dropping it.
>> But unless I misread the code, on arm/arm64 even PV guests are 1:1
>> mapped so that all Linux physically contigous memory also is Xen
>> contigous, so we don't need the hack.
>
> There are no PV guests on arm/arm64.

Ok, that's the part I was missing.  In that case we should be fine
without the IS_ENABLED indeed.