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x86: mce: Update X86_MCE description in x86/Kconfig

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- Clarify that this config controls thermal throttling
reporting too
- Clarify the types of errors reported by machine checks
- Drop references to ancient CPUs.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Andi Kleen 2009-07-09 00:31:38 +02:00 committed by H. Peter Anvin
parent c31d96338a
commit bab9bc6583
1 changed files with 4 additions and 12 deletions
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arch/x86/Kconfig
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@ -774,20 +774,12 @@ config X86_REROUTE_FOR_BROKEN_BOOT_IRQS
increased on these systems.
config X86_MCE
bool "Machine Check Exception"
bool "Machine Check / overheating reporting"
---help---
Machine Check Exception support allows the processor to notify the
kernel if it detects a problem (e.g. overheating, component failure).
Machine Check support allows the processor to notify the
kernel if it detects a problem (e.g. overheating, data corruption).
The action the kernel takes depends on the severity of the problem,
ranging from a warning message on the console, to halting the machine.
Your processor must be a Pentium or newer to support this - check the
flags in /proc/cpuinfo for mce. Note that some older Pentium systems
have a design flaw which leads to false MCE events - hence MCE is
disabled on all P5 processors, unless explicitly enabled with "mce"
as a boot argument. Similarly, if MCE is built in and creates a
problem on some new non-standard machine, you can boot with "nomce"
to disable it. MCE support simply ignores non-MCE processors like
the 386 and 486, so nearly everyone can say Y here.
ranging from warning messages to halting the machine.
config X86_OLD_MCE
depends on X86_32 && X86_MCE