Hi Jason,

On 2022/5/24 21:44, Jason Gunthorpe wrote:
diff --git a/drivers/iommu/iommu-sva-lib.c b/drivers/iommu/iommu-sva-lib.c
index 106506143896..210c376f6043 100644
+++ b/drivers/iommu/iommu-sva-lib.c
@@ -69,3 +69,51 @@ struct mm_struct *iommu_sva_find(ioasid_t pasid)
        return ioasid_find(&iommu_sva_pasid, pasid, __mmget_not_zero);
  }
  EXPORT_SYMBOL_GPL(iommu_sva_find);
+
+/*
+ * IOMMU SVA driver-oriented interfaces
+ */
+struct iommu_domain *
+iommu_sva_alloc_domain(struct bus_type *bus, struct mm_struct *mm)
This should return the proper type


Can you please elaborate a bit on "return the proper type"? Did you mean
return iommu_sva_domain instead? That's a wrapper of iommu_domain and
only for iommu internal usage.

Best regards,
baolu
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