Re: [PATCH 1/6] exec/memory: Introduce the translate_size function within the IOMMU class

[David Hildenbrand]

On 26.10.23 09:14, Ethan Chen wrote:
> On Wed, Oct 25, 2023 at 04:56:22PM +0200, David Hildenbrand wrote:
> > On 25.10.23 07:14, Ethan Chen wrote:
> > > IOMMU have size information during translation.
> >
> > Can you add some more information why we would want this and how the backend
> > can do "better" things with the size at hand?
> With size information, IOMMU can reject a memory access which is patially in
> valid region.
>
> Currently translation function limit memory access size with a mask, so the
> valid part of access will success. My target is to detect partially hit and
> reject whole access. Translation function cannot detect partially hit because
> it lacks size information.

Thanks; please add some of that to the patch description.

--
Cheers,

David / dhildenb