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authorAndi Kleen <andi@firstfloor.org>2009-05-27 21:56:56 +0200
committerH. Peter Anvin <hpa@zytor.com>2009-05-28 09:24:15 -0700
commit8780e8e0f6b34862cdf2c62d4d2674d6bc3207db (patch)
tree88b610f0c417d73100df67116bf07c0df02f064e
parentb170204ddb7844ffff62d2d537b20c0eeb97725e (diff)
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>
-rw-r--r--Documentation/x86/x86_64/boot-options.txt2
-rw-r--r--Documentation/x86/x86_64/machinecheck4
2 files changed, 5 insertions, 1 deletions
diff --git a/Documentation/x86/x86_64/boot-options.txt b/Documentation/x86/x86_64/boot-options.txt
index 34c13040a718..63fca718256e 100644
--- a/Documentation/x86/x86_64/boot-options.txt
+++ b/Documentation/x86/x86_64/boot-options.txt
@@ -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.
diff --git a/Documentation/x86/x86_64/machinecheck b/Documentation/x86/x86_64/machinecheck
index a05e58e7b159..a4fdb25446e0 100644
--- a/Documentation/x86/x86_64/machinecheck
+++ b/Documentation/x86/x86_64/machinecheck
@@ -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

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