Re: Possible dcache BUG

[Ingo Molnar]

* Andrew Morton <akpm@xxxxxxxx> wrote:

> Ingo Molnar <mingo@xxxxxxx> wrote:
> >
> > [btw., it would be nice to dump
> >  instructions prior the crash point so that we could know precisely what
> >  prefetch instruction the kernel included.]
> 
> I've had a patch (from Keith) to do that in -mm for over a year, and
> ksymoops has supported it for that long.  But I think Linus has some
> problem-which-I-never-understood with the whole idea.

There were some more naive patches around previously i believe and those
problems are solved in this patch: the dump splits the pre-crash and
post-crash instruction stream decoding, so crash-EIP decoding is never
unreliable.

>  25-akpm/arch/i386/kernel/traps.c |   18 ++++++++++--------
>  1 files changed, 10 insertions(+), 8 deletions(-)

a strong ack from me.

Signed-off-by: Ingo Molnar <mingo@xxxxxxx>

	Ingo
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