diff options
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/IPMI.txt | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/Documentation/IPMI.txt b/Documentation/IPMI.txt index 83b05459eb5c..bc38283379f0 100644 --- a/Documentation/IPMI.txt +++ b/Documentation/IPMI.txt | |||
@@ -584,9 +584,11 @@ The watchdog will panic and start a 120 second reset timeout if it | |||
584 | gets a pre-action. During a panic or a reboot, the watchdog will | 584 | gets a pre-action. During a panic or a reboot, the watchdog will |
585 | start a 120 timer if it is running to make sure the reboot occurs. | 585 | start a 120 timer if it is running to make sure the reboot occurs. |
586 | 586 | ||
587 | Note that if you use the NMI preaction for the watchdog, you MUST | 587 | Note that if you use the NMI preaction for the watchdog, you MUST NOT |
588 | NOT use nmi watchdog mode 1. If you use the NMI watchdog, you | 588 | use the nmi watchdog. There is no reasonable way to tell if an NMI |
589 | must use mode 2. | 589 | comes from the IPMI controller, so it must assume that if it gets an |
590 | otherwise unhandled NMI, it must be from IPMI and it will panic | ||
591 | immediately. | ||
590 | 592 | ||
591 | Once you open the watchdog timer, you must write a 'V' character to the | 593 | Once you open the watchdog timer, you must write a 'V' character to the |
592 | device to close it, or the timer will not stop. This is a new semantic | 594 | device to close it, or the timer will not stop. This is a new semantic |