diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index c8b0329c85d2..ca5ebaeafd6a 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -1343,7 +1343,7 @@ void qi_flush_dev_iotlb(struct intel_iommu *iommu, u16 sid, u16 qdep,
 
 	if (mask) {
 		BUG_ON(addr & ((1 << (VTD_PAGE_SHIFT + mask)) - 1));
-		addr |= (1 << (VTD_PAGE_SHIFT + mask - 1)) - 1;
+		addr |= (1ULL << (VTD_PAGE_SHIFT + mask - 1)) - 1;
 		desc.high = QI_DEV_IOTLB_ADDR(addr) | QI_DEV_IOTLB_SIZE;
 	} else
 		desc.high = QI_DEV_IOTLB_ADDR(addr);