[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.
 
    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
 Early Console
 
    syntax: earlyprintk=vga


@@ -198,6 +205,6 @@ Debugging
 
 Misc
 
 
 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.
                 for the CPU. This may be useful on asymmetric MP systems
                 where some CPU have less capabilities than the others.