diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 71d05f4..766abda 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1363,6 +1363,11 @@
 
 	reserve=	[KNL,BUGS] Force the kernel to ignore some iomem area
 
+	reservetop=	[IA-32]
+			Format: nn[KMG]
+			Reserves a hole at the top of the kernel virtual
+			address space.
+
 	resume=		[SWSUSP]
 			Specify the partition device for software suspend