Apparent kernel bug with GDB on ppc405

Grant Likely grant.likely at
Thu Oct 25 08:40:23 EST 2007

On 10/24/07, Grant Likely <grant.likely at> wrote:
> > Not completely implausible, but a) why isn't this seen on basically
> > every machine with software TLB? b) why does -local- GDB, which is
> > presumably doing much less work than gdbserver + network stack, not fail?
> a) I don't know.... very odd.
> b) gdb is big.  It probably touches far more pages (via library calls)
> than gdbserver.  The network stack is also big, but it's probably more
> localized too.
> Niceing down the host also makes sense because if the PC is being slow
> then the target may go off and run other things while between setting
> the breakpoint and getting the 'go' command.
> Can you grab a snapshot of the TLB before and after setting the breakpoint?

Or; probably more relevant, before and after the page copy?


Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
grant.likely at
(403) 399-0195

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