path: root/Documentation/x86_64
diff options
authorAndi Kleen <>2005-08-07 09:42:07 -0700
committerLinus Torvalds <>2005-08-07 10:00:37 -0700
commitd5172f263f76ca6d588f533c0989b22521fcbac2 (patch)
treea4a017f686f101b5817f6c1abbc84518335d497e /Documentation/x86_64
parentcf7bee5a0bf270a4eace0be39329d6ac0136cc47 (diff)
[PATCH] x86_64: ignore machine checks from boot time
Don't log machine check events left over from boot. Too many BIOSes leave bogus events in there. This unfortunately also makes it impossible to log events that caused a reboot. For people with non broken BIOS there is mce=bootlog Signed-off-by: Andi Kleen <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
Diffstat (limited to 'Documentation/x86_64')
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/x86_64/boot-options.txt b/Documentation/x86_64/boot-options.txt
index 476c0c22fbb7..678e8f192db2 100644
--- a/Documentation/x86_64/boot-options.txt
+++ b/Documentation/x86_64/boot-options.txt
@@ -6,6 +6,11 @@ only the AMD64 specific ones are listed here.
Machine check
mce=off disable machine check
+ mce=bootlog Enable logging of machine checks left over from booting.
+ Disabled by default because some BIOS leave bogus ones.
+ If your BIOS doesn't do that it's a good idea to enable though
+ to make sure you log even machine check events that result
+ in a reboot.
nomce (for compatibility with i386): same as mce=off