diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 40db7dd..860a908 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -660,6 +660,10 @@
 
 	gamma=		[HW,DRM]
 
+	gart_fix_e820=  [X86_64] disable the fix e820 for K8 GART
+			Format: off | on
+			default: on
+
 	gdth=		[HW,SCSI]
 			See header of drivers/scsi/gdth.c.