On Thu, Sep 12, 2024 at 06:04:22AM -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> > Signed-off-by: Yi Liu <yi.l.liu@xxxxxxxxx> > --- > drivers/iommu/amd/amd_iommu.h | 3 ++- > drivers/iommu/amd/pasid.c | 3 ++- > drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 3 ++- > drivers/iommu/intel/iommu.c | 6 ++++-- > drivers/iommu/intel/svm.c | 3 ++- > drivers/iommu/iommu.c | 3 ++- > include/linux/iommu.h | 2 +- > 7 files changed, 15 insertions(+), 8 deletions(-) Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx> Jason
