From: Wolfgang Denk <wd@denx.de>
To: Dan Malek <dan@embeddededge.com>
Cc: Jeremy Bowen <Jeremy.Bowen@opennw.com>,
"'Linux PPC'" <linuxppc-embedded@lists.linuxppc.org>
Subject: Re: Problems with MMU: address translation for 0xXXXXXXXX failed
Date: Tue, 13 May 2003 10:08:01 +0200 [thread overview]
Message-ID: <20030513080806.85B40C6092@atlas.denx.de> (raw)
In-Reply-To: Your message of "Tue, 13 May 2003 01:07:38 EDT." <3EC07D9A.6050604@embeddededge.com>
In message <3EC07D9A.6050604@embeddededge.com> you wrote:
>
> If that doesn't work, just out of curiosity use hard breakpoints (set
> BREAKMODE HARD). Just test it setting one breakpoint. If this works,
> I suspect the BDI is honoring the write protection (via the MMU) on the
> kernel text pages and we can't set a soft breakpoint. In this case, we'll
> have to add a kernel configuration to allow a debugger write. The
> CONFIG_KGDB and CONFIG_XMON enable the text writing, but they also add
> too much baggage and could interfere with the BDI. It's another thing
It should be sufficient to enable CONFIG_BDI_SWITCH in the kernel
configuration (after enabling CONFIG_DEBUG_KERNEL).
Best regards,
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd@denx.de
If it happens once, it's a bug.
If it happens twice, it's a feature.
If it happens more than twice, it's a design philosophy.
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2003-05-13 8:08 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-13 4:19 Problems with MMU: address translation for 0xXXXXXXXX failed Jeremy Bowen
2003-05-13 5:07 ` Dan Malek
2003-05-13 8:08 ` Wolfgang Denk [this message]
2003-05-13 7:55 ` Wolfgang Denk
-- strict thread matches above, loose matches on Subject: below --
2003-05-14 21:15 Jeremy Bowen
2003-05-14 21:46 ` Wolfgang Denk
2003-05-14 23:33 Jeremy Bowen
2003-05-14 23:45 ` Wolfgang Denk
2003-05-14 23:52 ` Wolfgang Denk
[not found] <DEA23DB61B62D4118B5900508B323B84012CC7D7@OPENMAIL>
2003-05-15 0:19 ` Wolfgang Denk
[not found] <DEA23DB61B62D4118B5900508B323B84012CC7D8@OPENMAIL>
2003-05-15 0:23 ` Wolfgang Denk
2003-05-15 3:43 Jeremy Bowen
2003-05-15 6:34 ` Dan Malek
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