diff --git a/drivers/iommu/intel/pasid.c b/drivers/iommu/intel/pasid.c
index f821153390e5..80d6412e2c54 100644
--- a/drivers/iommu/intel/pasid.c
+++ b/drivers/iommu/intel/pasid.c
@@ -186,6 +186,9 @@ int intel_pasid_alloc_table(struct device *dev)
 attach_out:
 	device_attach_pasid_table(info, pasid_table);
 
+	if (!ecap_coherent(info->iommu->ecap))
+		clflush_cache_range(pasid_table->table, size);
+
 	return 0;
 }
 
@@ -276,6 +279,10 @@ retry:
 			free_pgtable_page(entries);
 			goto retry;
 		}
+		if (!ecap_coherent(info->iommu->ecap)) {
+			clflush_cache_range(entries, VTD_PAGE_SIZE);
+			clflush_cache_range(&dir[dir_index].val, sizeof(*dir));
+		}
 	}
 
 	return &entries[index];