[PATCH kernel] powerpc/iommu: Add iommu_ops to report capabilities and allow blocking domains

[Jason Gunthorpe]

On Mon, Jul 11, 2022 at 11:24:32PM +1000, Alexey Kardashevskiy wrote:

> I really think that for 5.19 we should really move this blocked domain
> business to Type1 like this:
> 
> https://github.com/aik/linux/commit/96f80c8db03b181398ad355f6f90e574c3ada4bf

This creates the same security bug for power we are discussing here. If you
don't want to fix it then lets just merge this iommu_ops patch as is rather than
mangle the core code.

Jason