1 files changed, 4 insertions, 0 deletions

diff --git a/Documentation/x86/x86_64/machinecheck b/Documentation/x86/x86_64/machinecheck
index a4fdb25446e0..b1fb30273286 100644
--- a/Documentation/x86/x86_64/machinecheck
+++ b/Documentation/x86/x86_64/machinecheck
@@ -69,6 +69,10 @@ trigger
         Program to run when a machine check event is detected.
         This is an alternative to running mcelog regularly from cron
         and allows to detect events faster.
+monarch_timeout
+        How long to wait for the other CPUs to machine check too on a
+        exception. 0 to disable waiting for other CPUs.
+        Unit: us
 
 TBD document entries for AMD threshold interrupt configuration