* Triggering Machine Check Exceptions on x86
@ 2006-03-23 1:23 Kalyan Rajasekharuni
2006-03-23 14:13 ` Alan Cox
0 siblings, 1 reply; 2+ messages in thread
From: Kalyan Rajasekharuni @ 2006-03-23 1:23 UTC (permalink / raw)
To: linux-kernel
I would like to trigger a Machine Check Exception soley by a
'software mechanism' on my x86 box. The idea is to test my
machine check exception handler thoroughly. I want a reliable
way which will generate this exception every time when I run
the software code snippet.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Triggering Machine Check Exceptions on x86
2006-03-23 1:23 Triggering Machine Check Exceptions on x86 Kalyan Rajasekharuni
@ 2006-03-23 14:13 ` Alan Cox
0 siblings, 0 replies; 2+ messages in thread
From: Alan Cox @ 2006-03-23 14:13 UTC (permalink / raw)
To: Kalyan Rajasekharuni; +Cc: linux-kernel
On Mer, 2006-03-22 at 17:23 -0800, Kalyan Rajasekharuni wrote:
> I would like to trigger a Machine Check Exception soley by a
> 'software mechanism' on my x86 box. The idea is to test my
> machine check exception handler thoroughly. I want a reliable
> way which will generate this exception every time when I run
> the software code snippet.
You will need to ask the CPU vendor I think. You can trigger MCEs on
some x86s by exploiting obscure hardware flaws in supervisor mode
(notably with mismatched memory cache types for the same page) but I
don't know of any way to make that predictable.
Alan
^ permalink raw reply [flat|nested] 2+ messages in thread
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2006-03-23 1:23 Triggering Machine Check Exceptions on x86 Kalyan Rajasekharuni
2006-03-23 14:13 ` Alan Cox
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