diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index f16bf63ea9fd8..d759e7234e982 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -2701,7 +2701,9 @@ static int __init si_domain_init(int hw)
 				    end >> agaw_to_width(si_domain->agaw)))
 				continue;
 
-			ret = iommu_domain_identity_map(si_domain, start, end);
+			ret = iommu_domain_identity_map(si_domain,
+					mm_to_dma_pfn(start >> PAGE_SHIFT),
+					mm_to_dma_pfn(end >> PAGE_SHIFT));
 			if (ret)
 				return ret;
 		}