On Thu, Oct 17, 2024 at 10:53:54PM -0700, Yi Liu wrote: > To support domain replacement for pasid, the underlying iommu driver needs > to know the old domain hence be able to clean up the existing attachment. > It would be much convenient for iommu layer to pass down the old domain. > Otherwise, iommu drivers would need to track domain for pasids by themselves, > this would duplicate code among the iommu drivers. Or iommu drivers would > rely group->pasid_array to get domain, which may not always the correct > one. > > Suggested-by: Jason Gunthorpe <jgg@xxxxxxxxxx> > Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx> > Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx> > Signed-off-by: Yi Liu <yi.l.liu@xxxxxxxxx> Reviewed-by: Nicolin Chen <nicolinc@xxxxxxxxxx>
