RE: [RFC v16 1/9] iommu: Introduce attach/detach_pasid_table API

Tian, Kevin
2021-12-11T05:18:12Z

> From: Tian, Kevin
> Sent: Saturday, December 11, 2021 11:58 AM
>
> This might be the only open as I still didn't see why we need an
> explicit flag to claim a 'full device' thing. From kernel p.o.v the
> ARM case is no different from Intel that both allows an user
> page table attached to vRID, just with different format and

obviously this is 'RID' to not cause further confusion since it
talks about the kernel p.o.v

> addr width (Intel is 64bit, ARM is 84bit where PASID can be
> considered a sub-handle in the 84bit address space and not
> the kernel's business).
>
> and ARM doesn't support explicit PASID attach then those calls
> will fail for sure.

Thanks
Kevin