Commit-ID: 8780e8e0f6b34862cdf2c62d4d2674d6bc3207db
Gitweb: http://git.kernel.org/tip/8780e8e0f6b34862cdf2c62d4d2674d6bc3207db
Author: Andi Kleen <andi@xxxxxxxxxxxxxx>
AuthorDate: Wed, 27 May 2009 21:56:56 +0200
Committer: H. Peter Anvin <hpa@xxxxxxxxx>
CommitDate: Thu, 28 May 2009 09:24:15 -0700
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@xxxxxxxxxxxxxx>
Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@xxxxxxxxxxxxxx>
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxx>
---
Documentation/x86/x86_64/boot-options.txt | 2 ++
Documentation/x86/x86_64/machinecheck | 4 +++-
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 34c1304..63fca71 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 a05e58e..a4fdb25 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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