diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 4cd1a5d..be92e61 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1335,6 +1335,10 @@
 
 	nowb		[ARM]
 
+	nptcg=		[IA64] Override max number of concurrent global TLB
+			purges which is reported from either PAL_VM_SUMMARY or
+			SAL PALO.
+
 	numa_zonelist_order= [KNL, BOOT] Select zonelist order for NUMA.
 			one of ['zone', 'node', 'default'] can be specified
 			This can be set from sysctl after boot.