1 files changed, 11 insertions, 2 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index bf5d2cd6a56e..86e9282d1c20 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1665,6 +1665,10 @@ running once the system is up.
         usbhid.mousepoll=
                         [USBHID] The interval which mice are to be polled at.
 
+        vdso=           [IA-32]
+                        vdso=1: enable VDSO (default)
+                        vdso=0: disable VDSO mapping
+
         video=          [FB] Frame buffer configuration
                         See Documentation/fb/modedb.txt.
 
@@ -1681,9 +1685,14 @@ running once the system is up.
                         decrease the size and leave more room for directly
                         mapped kernel RAM.
 
-        vmhalt=         [KNL,S390]
+        vmhalt=         [KNL,S390] Perform z/VM CP command after system halt.
+                        Format: <command>
+
+        vmpanic=        [KNL,S390] Perform z/VM CP command after kernel panic.
+                        Format: <command>
 
-        vmpoff=         [KNL,S390]
+        vmpoff=         [KNL,S390] Perform z/VM CP command after power off.
+                        Format: <command>
 
         waveartist=     [HW,OSS]
                         Format: <io>,<irq>,<dma>,<dma2>