X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=Documentation%2FRCU%2FNMI-RCU.txt;h=a6d32e65d222bbea68cba1c133db87c459c99dec;hb=392eaef2e9f8e6527043ad8422d9cfea59ee6fb0;hp=c64158ecde4371bd79b7fc9f43753fee50084546;hpb=b69409279c4c960fcd1575bcf80f2a0ca414ca93;p=linux-2.6-omap-h63xx.git

diff --git a/Documentation/RCU/NMI-RCU.txt b/Documentation/RCU/NMI-RCU.txt
index c64158ecde4..a6d32e65d22 100644
--- a/Documentation/RCU/NMI-RCU.txt
+++ b/Documentation/RCU/NMI-RCU.txt
@@ -93,6 +93,9 @@ Since NMI handlers disable preemption, synchronize_sched() is guaranteed
 not to return until all ongoing NMI handlers exit.  It is therefore safe
 to free up the handler's data as soon as synchronize_sched() returns.
 
+Important note: for this to work, the architecture in question must
+invoke irq_enter() and irq_exit() on NMI entry and exit, respectively.
+
 
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