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authorBorislav Petkov <bp@suse.de>2021-12-20 23:43:28 +0300
committerBorislav Petkov <bp@suse.de>2022-02-23 13:09:25 +0300
commit7f1b8e0d6360178e3527d4f14e6921c254a86035 (patch)
tree21fd1faf6a1cbe36343dc8330da52c750bee7a33 /Documentation/x86
parent8ca97812c3c830573f965a07bbd84223e8c5f5bd (diff)
downloadlinux-7f1b8e0d6360178e3527d4f14e6921c254a86035.tar.xz
x86/mce: Remove the tolerance level control
This is pretty much unused and not really useful. What is more, all relevant MCA hardware has recoverable machine checks support so there's no real need to tweak MCA tolerance levels in order to *maybe* extend machine lifetime. So rip it out. Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lore.kernel.org/r/YcDq8PxvKtTENl/e@zn.tnic
Diffstat (limited to 'Documentation/x86')
-rw-r--r--Documentation/x86/x86_64/boot-options.rst9
1 files changed, 1 insertions, 8 deletions
diff --git a/Documentation/x86/x86_64/boot-options.rst b/Documentation/x86/x86_64/boot-options.rst
index ccb7e86bf8d9..07aa0007f346 100644
--- a/Documentation/x86/x86_64/boot-options.rst
+++ b/Documentation/x86/x86_64/boot-options.rst
@@ -47,14 +47,7 @@ Please see Documentation/x86/x86_64/machinecheck.rst for sysfs runtime tunables.
in a reboot. On Intel systems it is enabled by default.
mce=nobootlog
Disable boot machine check logging.
- mce=tolerancelevel[,monarchtimeout] (number,number)
- tolerance levels:
- 0: always panic on uncorrected errors, log corrected errors
- 1: panic or SIGBUS on uncorrected errors, log corrected errors
- 2: SIGBUS or log uncorrected errors, log corrected errors
- 3: never panic or SIGBUS, log all errors (for testing only)
- Default is 1
- Can be also set using sysfs which is preferable.
+ mce=monarchtimeout (number)
monarchtimeout:
Sets the time in us to wait for other CPUs on machine checks. 0
to disable.