diff --git a/drivers/iommu/intel/pasid.c b/drivers/iommu/intel/pasid.c
index a39aab66a01b..3f03039e5cce 100644
--- a/drivers/iommu/intel/pasid.c
+++ b/drivers/iommu/intel/pasid.c
@@ -127,7 +127,7 @@ int intel_pasid_alloc_table(struct device *dev)
 	info->pasid_table = pasid_table;
 
 	if (!ecap_coherent(info->iommu->ecap))
-		clflush_cache_range(pasid_table->table, size);
+		clflush_cache_range(pasid_table->table, (1 << order) * PAGE_SIZE);
 
 	return 0;
 }