diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 54983246930d1aeb922c3691ac0b5a96028d97ef..211c45acce8922a1f453bb7d14f48895f82be739 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -110,6 +110,13 @@ be entered as an environment variable, whereas its absence indicates that
 it will appear as a kernel argument readable via /proc/cmdline by programs
 running once the system is up.
 
+The number of kernel parameters is not limited, but the length of the
+complete command line (parameters including spaces etc.) is limited to
+a fixed number of characters. This limit depends on the architecture
+and is between 256 and 4096 characters. It is defined in the file
+./include/asm/setup.h as COMMAND_LINE_SIZE.
+
+
 	53c7xx=		[HW,SCSI] Amiga SCSI controllers
 			See header of drivers/scsi/53c7xx.c.
 			See also Documentation/scsi/ncr53c7xx.txt.