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Documentation/admin-guide: Add bus lock ratelimit

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Since bus lock rate limit changes the split_lock_detect parameter,
update the documentation for the change.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20210419214958.4035512-4-fenghua.yu@intel.com
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Fenghua Yu 2021-04-19 21:49:57 +00:00 committed by Thomas Gleixner
parent ef4ae6e441
commit 9d839c280b
1 changed files with 8 additions and 0 deletions
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8
Documentation/admin-guide/kernel-parameters.txt
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@ -5283,6 +5283,14 @@
exception. Default behavior is by #AC if
both features are enabled in hardware.
ratelimit:N -
Set system wide rate limit to N bus locks
per second for bus lock detection.
0 < N <= 1000.
N/A for split lock detection.
If an #AC exception is hit in the kernel or in
firmware (i.e. not while executing in user mode)
the kernel will oops in either "warn" or "fatal"