On Fri, May 20, 2022 at 09:54:51AM +0100, Robin Murphy wrote:
> The .def_domain type op already allows drivers to do exactly this sort of
> override. You could also conditionally reject IOMMU_DOMAIN_PASSTHROUGH in
> .domain_alloc for good measure, provided that (for now at least*) SNP is a
> global thing rather than per-instance.
Yeah, that could work. I am just not sure the IOMMU core behaves well in
all situations when allocation IOMMU_DOMAIN_PASSTHROUGH suddenly starts
to fail. I would feel better if this is checked and tested :)
Regards,
Joerg
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