iommufd: Use iommu_paging_domain_alloc()

If the iommu driver doesn't implement its domain_alloc_user callback,
iommufd_hwpt_paging_alloc() rolls back to allocate an iommu paging domain.
Replace iommu_domain_alloc() with iommu_user_domain_alloc() to pass the
device pointer along the path.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20240610085555.88197-3-baolu.lu@linux.intel.com
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/drivers/iommu/iommufd/hw_pagetable.c b/drivers/iommu/iommufd/hw_pagetable.c
index 33d142f8057d70a77f44e842afdd84b1bee0a970..cbddfa3ca95aa8ad5f40d8ea63dd40c9d5d4a292 100644 (file)
--- a/drivers/iommu/iommufd/hw_pagetable.c
+++ b/drivers/iommu/iommufd/hw_pagetable.c
@@ -137,9 +137,10 @@ iommufd_hwpt_paging_alloc(struct iommufd_ctx *ictx, struct iommufd_ioas *ioas,
                }
                hwpt->domain->owner = ops;
        } else {
-               hwpt->domain = iommu_domain_alloc(idev->dev->bus);
-               if (!hwpt->domain) {
-                       rc = -ENOMEM;
+               hwpt->domain = iommu_paging_domain_alloc(idev->dev);
+               if (IS_ERR(hwpt->domain)) {
+                       rc = PTR_ERR(hwpt->domain);
+                       hwpt->domain = NULL;
                        goto out_abort;
                }
        }