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| author | Andi Kleen <andi@firstfloor.org> | 2009-05-27 21:56:56 +0200 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2009-05-28 09:24:15 -0700 |
| commit | 8780e8e0f6b34862cdf2c62d4d2674d6bc3207db (patch) | |
| tree | 88b610f0c417d73100df67116bf07c0df02f064e /Documentation/x86 | |
| parent | b170204ddb7844ffff62d2d537b20c0eeb97725e (diff) | |
| download | lwn-8780e8e0f6b34862cdf2c62d4d2674d6bc3207db.tar.gz lwn-8780e8e0f6b34862cdf2c62d4d2674d6bc3207db.zip | |
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>
Diffstat (limited to 'Documentation/x86')
| -rw-r--r-- | Documentation/x86/x86_64/boot-options.txt | 2 | ||||
| -rw-r--r-- | 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 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 |