Re: [patch] MCA recovery: Montecito support

Hidetoshi Seto <seto.hidetoshi@xxxxxxxxxxxxxx> · Fri, 27 Oct 2006 09:25:11 +0900

All right. Thank you, Russ.

- H.Seto

Acked-by: Hidetoshi Seto <seto.hidetoshi@xxxxxxxxxxxxxx>

Russ Anderson wrote:

It's worth noting that this change does not effect the selection of
which process to kill.  It only effects which physical memory

address gets marked as bad.  

In my test case, a correctable error is injected (an ends up in the
bus check target identifier) then a memory uncorrectable is injected

and consumed, triggering the MCA.  The test program is correctly 

terminated, but the current code uses the bus check target identifier

and marks the address of the correctable error as bad.  The real bad
memory goes back on the free list, and promptly gets reused, triggering
another MCA.  The cycle repeats until the kernel happens to get
the memory.  Kernel memory error, end of ballgame.

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