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New kernel feature ? "NOTICE: Scheduling removal of page 0x00000000.10d0c000" after "WARNING: [AFT0] 3 soft errors ..."

Hi!

----

I have an old Ultra1 which seems to have sporadic "fun" with one of the
memory modules (="WARNING: [AFT0] 3 soft errors ..."), nothing
serious...
.... today, after an kernel update (from 108528-23 to 108528-23) there is
now a 2nd line following the old message:
-- snip --
Jan 14 10:08:00 bloodbath unix: WARNING: [AFT0] 3 soft errors in less
than 24:00 (hh:mm) detected from Memory Module U0702
Jan 14 10:08:00 bloodbath unix: NOTICE: Scheduling removal of page
0x00000000.10d0c000
-- snip --

Does that mean the kernel now removes the hot spots where these errors
occur ?

----

Bye,
Roland

-- 
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0
Roland
1/14/2004 7:49:52 PM
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Roland Mainz <roland.mainz@informatik.med.uni-giessen.de> wrote:
> Jan 14 10:08:00 bloodbath unix: WARNING: [AFT0] 3 soft errors in less
> than 24:00 (hh:mm) detected from Memory Module U0702
> Jan 14 10:08:00 bloodbath unix: NOTICE: Scheduling removal of page
> 0x00000000.10d0c000
> 
> Does that mean the kernel now removes the hot spots where these errors
> occur ?

Indeed it does.  Later kernel patches now have fetaures to remove both
failing CPUs and memory (at the page level) once it passes a threshold of
errors.

I'm not aware of any documention publically available on this feature at
the moment, but there is a Sun BluePrint on it's way which has the
details - it will appear on http://www.sun.com/blueprints/online.html 
at some stage in the (hopefully) near future.

  Scott.
0
Scott
1/14/2004 11:26:19 PM
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