From: "Grant Likely" <grant.likely@secretlab.ca>
To: "Matt Mackall" <mpm@selenic.com>
Cc: linuxppc-embedded@ozlabs.org, gdb@sourceware.org
Subject: Re: Apparent kernel bug with GDB on ppc405
Date: Wed, 24 Oct 2007 22:40:00 -0000 [thread overview]
Message-ID: <fa686aa40710241540y498b0c92le63920862d6b9315@mail.gmail.com> (raw)
In-Reply-To: <fa686aa40710241539r792380dam62ea820a48dab62e@mail.gmail.com>
On 10/24/07, Grant Likely <grant.likely@secretlab.ca> 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?
g.
--
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
grant.likely@secretlab.ca
(403) 399-0195
next prev parent reply other threads:[~2007-10-24 22:40 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-24 19:46 Matt Mackall
2007-10-24 20:28 ` Grant Likely
2007-10-24 20:42 ` Matt Mackall
2007-10-24 20:46 ` Grant Likely
2007-10-24 21:54 ` Matt Mackall
2007-10-24 22:28 ` Grant Likely
2007-10-24 22:33 ` Matt Mackall
2007-10-24 22:39 ` Grant Likely
2007-10-24 22:40 ` Grant Likely [this message]
2007-10-26 1:51 ` Benjamin Herrenschmidt
2007-10-24 22:41 ` Daniel Jacobowitz
2007-10-26 1:51 ` Benjamin Herrenschmidt
2007-10-26 20:41 ` Josh Boyer
2007-10-27 1:36 ` Benjamin Herrenschmidt
2007-10-27 1:40 ` Josh Boyer
2007-10-24 20:34 ` David Daney
2007-10-26 1:52 ` Benjamin Herrenschmidt
2007-10-26 1:47 ` Benjamin Herrenschmidt
2007-10-26 2:45 ` Grant Likely
2007-10-26 3:23 ` Benjamin Herrenschmidt
2007-10-26 14:42 ` Matt Mackall
2007-10-27 1:31 ` Benjamin Herrenschmidt
[not found] ` <1193470322.18243.63.camel@pasglop>
[not found] ` <20071029070824.72854629@weaponx.rchland.ibm.com>
[not found] ` <20071029151546.5af0e843@weaponx.rchland.ibm.com>
[not found] ` <1193690106.9928.32.camel@pasglop>
2007-10-29 21:19 ` [PATCH/RFC] powerpc: Pass PID argument to _tlbie (WAS: Apparent kernel bug with GDB on ppc405) Matt Mackall
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