Re: [Xen-devel] [PATCH] iommu: specify page_count rather than page_order to iommu_map/unmap()...

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 18.01.19 at 17:03, <paul.durrant@xxxxxxxxxx> wrote:
> ...and remove alignment assertions.
> 
> Testing shows that certain callers of iommu_legacy_map/unmap() specify
> order > 0 ranges that are not order aligned thus causing one of the
> IS_ALIGNED() assertions to fire.

As said before - without a much better explanation of why the current
order-based model is unsuitable (so far I've been provided only vague
pointers into "somewhere in PVH Dom0 boot code" iirc) to understand
why it's undesirable to simply make those call sites obey to the current
requirements, I'm not happy to see us go this route.

Jan



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