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Commit 8780e8e0 authored May 27, 2009 by Andi Kleen Committed by H. Peter Anvin May 28, 2009

x86, mce: improve documentation



Document that check_interval set to 0 means no polling.
Noticed by Hidetoshi Seto

Also add a reference from boot options to the sysfs tunables

Acked-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

parent b170204d

Documentation/x86/x86_64/boot-options.txt

+2 −0

Original line number	Diff line number	Diff line
		@@ -5,6 +5,8 @@ only the AMD64 specific ones are listed here.

		Machine check

		Please see Documentation/x86/x86_64/machinecheck for sysfs runtime tunables.

		mce=off disable machine check
		mce=bootlog Enable logging of machine checks left over from booting.
		Disabled by default on AMD because some BIOS leave bogus ones.

Documentation/x86/x86_64/machinecheck

+3 −1

Original line number	Diff line number	Diff line
		@@ -41,7 +41,9 @@ check_interval
		the polling interval. When the poller stops finding MCEs, it
		triggers an exponential backoff (poll less often) on the polling
		interval. The check_interval variable is both the initial and
		maximum polling interval.
		maximum polling interval. 0 means no polling for corrected machine
		check errors (but some corrected errors might be still reported
		in other ways)

		tolerant
		Tolerance level. When a machine check exception occurs for a non