Re: [PATCH-2] NMI trap revised (was Re: NMI errors in 2.0.30??) (fwd)
H. Peter Anvin (hpa@transmeta.com)
13 May 1997 20:46:55 GMT
Followup to: <Pine.HPP.3.91.970513213815.16110A-100000@gra-ux1.iram.es>
By author: Gabriel Paubert <paubert@iram.es>
In newsgroup: linux.dev.kernel
>
> BTW: if after reading twice the whole memory you have not detected a single
> error, what do you do ? I see two possible explanations:
> - the code was performing some very short read-modify-write sequence,
> possibly in a single instruction. The bad memory location has been
> overwritten. A good reason to panic, especially if the two low order bits
> of CS saved on the stack are zero (kernel mode NMI)...
>
Or you're using ECC, and the error was correctible.
-hpa
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