On 2024/10/18 13:53, 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> --- 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: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx> Thanks, baolu
