diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index abae363..0e3b009 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -1430,7 +1430,7 @@
 	min_pagesz = 1 << __ffs(domain->ops->pgsize_bitmap);
 
 	for_each_sg(sg, s, nents, i) {
-		phys_addr_t phys = sg_phys(s);
+		phys_addr_t phys = page_to_phys(sg_page(s)) + s->offset;
 
 		/*
 		 * We are mapping on IOMMU page boundaries, so offset within