Files
linux/drivers
Yi Liu fb3de9f9b0 iommu: Prevent pasid attach if no ops->remove_dev_pasid
driver should implement both set_dev_pasid and remove_dev_pasid op, otherwise
it is a problem how to detach pasid. In reality, it is impossible that an
iommu driver implements set_dev_pasid() but no remove_dev_pasid() op. However,
it is better to check it.

Move the group check to be the first as dev_iommu_ops() may fail when there
is no valid group. Also take the chance to remove the dev_has_iommu() check
as it is duplicated to the group check.

Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20241204122928.11987-2-yi.l.liu@intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2024-12-18 09:39:34 +01:00
..
2024-11-05 05:33:46 +01:00
2024-11-09 09:14:12 -08:00
2024-11-15 00:32:29 +11:00
2024-11-12 15:48:08 +01:00