[PATCH v2 10/19] iommu/arm-smmu-v3: Compute the STE only once for each master

[Nicolin Chen]

On Mon, Nov 13, 2023 at 01:53:17PM -0400, Jason Gunthorpe wrote:
> Currently arm_smmu_install_ste_for_dev() iterates over every SID and
> computes from scratch an identical STE. Every SID should have the same STE
> contents. Turn this inside out so that the STE is supplied by the caller
> and arm_smmu_install_ste_for_dev() simply installs it to every SID.
> 
> This is possible now that the STE generation does not inform what sequence
> should be used to program it.
> 
> This allows splitting the STE calculation up according to the call site,
> which following patches will make use of, and removes the confusing NULL
> domain special case that only supported arm_smmu_detach_dev().
> 
> Signed-off-by: Jason Gunthorpe <jgg at nvidia.com>

Reviewed-by: Nicolin Chen <nicolinc at nvidia.com>