1 files changed, 1 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 84c3bd05c639..4287696f18dd 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1820,6 +1820,7 @@ and is between 256 and 4096 characters. It is defined in the file
                         [USBHID] The interval which mice are to be polled at.
 
         vdso=           [IA-32,SH]
+                        vdso=2: enable compat VDSO (default with COMPAT_VDSO)
                         vdso=1: enable VDSO (default)
                         vdso=0: disable VDSO mapping