lkml.org 
[lkml]   [1998]   [Oct]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: correcting one-bit errors in the idle task


On Tue, 20 Oct 1998, Neil Conway wrote:

> My first question is: are there any tools (esp. for Linux :) to ask the
> chipset how *many* single-bit errors have occurred ?

The chipsets report the errors (if so configured) one at a time. You have
to read the appropriate registers at that time. They could be read in the
NMI handler, and the results queued somewhere for logging later.

In addition to scrubbing single bit-errors (either in hardware, or in the
NMI code), it's possible to recover from some multiple-bit errors. If the
multiple-bit error occurs on a page which is unmodified, the page can be
marked not-present and paged back from disk on next access. (IRIX does
this, for example.)

Dean


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:45    [W:0.043 / U:0.344 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site