[PATCH] x86_64: Allow to run main time keeping from the local APIC interrupt

[linux-2.6] / Documentation / x86_64 / boot-options.txt

diff --git a/Documentation/x86_64/boot-options.txt b/Documentation/x86_64/boot-options.txt
index 72ab9b99b22c822f160f7e95fdd5d2d4613c3ee9..654ea4fccff880f0e42a95d0aa3c06ffd60ee1ac 100644 (file)
--- a/Documentation/x86_64/boot-options.txt
+++ b/Documentation/x86_64/boot-options.txt
@@ -40,6 +40,13 @@ APICs
    no_timer_check Don't check the IO-APIC timer. This can work around
                 problems with incorrect timer initialization on some boards.
 
+   apicmaintimer Run time keeping from the local APIC timer instead
+                 of using the PIT/HPET interrupt for this. This is useful
+                 when the PIT/HPET interrupts are unreliable.
+
+   noapicmaintimer  Don't do time keeping using the APIC timer.
+                Useful when this option was auto selected, but doesn't work.
+
 Early Console
 
    syntax: earlyprintk=vga
@@ -198,6 +205,6 @@ Debugging
 
 Misc
 
-  noreplacement  Don't replace instructions with more appropiate ones
+  noreplacement  Don't replace instructions with more appropriate ones
                 for the CPU. This may be useful on asymmetric MP systems
                 where some CPU have less capabilities than the others.