diff --git a/arch/s390/mm/extmem.c b/arch/s390/mm/extmem.c
index a9566bc..9b11e3e 100644
--- a/arch/s390/mm/extmem.c
+++ b/arch/s390/mm/extmem.c
@@ -192,6 +192,7 @@
 	diag_cc = dcss_diag (DCSS_SEGEXT, qin, &dummy, &vmrc);
 
 	if (diag_cc > 1) {
+		PRINT_WARN ("segment_type: diag returned error %ld\n", vmrc);
 		rc = dcss_diag_translate_rc (vmrc);
 		goto out_free;
 	}
@@ -553,7 +554,7 @@
 	int endpfn = 0;
 	char cmd1[160];
 	char cmd2[80];
-	int i;
+	int i, response;
 
 	if (!MACHINE_IS_VM)
 		return;
@@ -576,8 +577,20 @@
 			segtype_string[seg->range[i].start & 0xff]);
 	}
 	sprintf(cmd2, "SAVESEG %s", name);
-	cpcmd(cmd1, NULL, 0, NULL);
-	cpcmd(cmd2, NULL, 0, NULL);
+	response = 0;
+	cpcmd(cmd1, NULL, 0, &response);
+	if (response) {
+		PRINT_ERR("segment_save: DEFSEG failed with response code %i\n",
+			  response);
+		goto out;
+	}
+	cpcmd(cmd2, NULL, 0, &response);
+	if (response) {
+		PRINT_ERR("segment_save: SAVESEG failed with response code %i\n",
+			  response);
+		goto out;
+	}
+out:
 	spin_unlock(&dcss_lock);
 }