From: "Pali Rohár" <pali.rohar@gmail.com>
To: Matthijs van Duin <matthijsvanduin@gmail.com>
Cc: Tony Lindgren <tony@atomide.com>,
Sebastian Reichel <sre@ring0.de>,
linux-omap@vger.kernel.org, Aaro Koskinen <aaro.koskinen@iki.fi>,
Pavel Machek <pavel@ucw.cz>, Nishanth Menon <nm@ti.com>
Subject: Re: runtime check for omap-aes bus access permission (was: Re: 3.13-rc3 (commit 7ce93f3) breaks Nokia N900 DT boot)
Date: Wed, 11 Feb 2015 13:39:54 +0100 [thread overview]
Message-ID: <201502111339.54480@pali> (raw)
In-Reply-To: <CAALWOA9jXeUgOj=GWFVQKkaz_Goxj-NOKk5qRHUTF6=EXEu+6w@mail.gmail.com>
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On Saturday 31 January 2015 16:13:39 Matthijs van Duin wrote:
> On 31 January 2015 at 12:34, Pali Rohár <pali.rohar@gmail.com>
wrote:
> > [ 172.923553] Unhandled fault: external abort on
> > non-linefetch (0x1018) at 0xb6f87028 [ 172.930664] In-band
> > Error seen by MPU at address 0
>
> Also, why is this error so uninformative? A synchronous abort
> should at least mention the _physical_ address, type of
> access, etc.
>
> Anyhow, since checking the firewalls/APs to see if you have
> permission will probably only get you yet another fault if
> things are walled off, the robust way of dealing with this
> sort of situation is by probing the device with a read while
> trapping bus faults. This also handles modules that are
> unreachable for other reasons, e.g. being disabled by eFuse.
It is possible to patch kernel code to mask or ignore that fault?
Can you help me with something like that?
--
Pali Rohár
pali.rohar@gmail.com
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next prev parent reply other threads:[~2015-02-11 12:39 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-06 21:36 3.13-rc3 (commit 7ce93f3) breaks Nokia N900 DT boot Sebastian Reichel
2013-12-06 22:27 ` Tony Lindgren
2013-12-07 0:00 ` Sebastian Reichel
2013-12-07 0:38 ` Tony Lindgren
2013-12-07 8:18 ` Pali Rohár
2013-12-07 13:48 ` Sebastian Reichel
2013-12-07 13:57 ` Pali Rohár
2013-12-07 16:51 ` Tony Lindgren
2013-12-07 17:53 ` Tony Lindgren
2013-12-07 18:49 ` runtime check for omap-aes bus access permission (was: Re: 3.13-rc3 (commit 7ce93f3) breaks Nokia N900 DT boot) Sebastian Reichel
2013-12-07 21:11 ` Tony Lindgren
2013-12-07 23:03 ` Sebastian Reichel
2013-12-07 23:22 ` Tony Lindgren
2014-09-08 23:45 ` Pali Rohár
2014-11-25 21:08 ` Pali Rohár
2014-11-25 21:31 ` Pali Rohár
2014-11-26 17:54 ` Tony Lindgren
2015-01-17 9:18 ` Pali Rohár
2015-01-17 17:04 ` Tony Lindgren
2015-01-17 17:29 ` Pali Rohár
2015-01-17 17:41 ` Tony Lindgren
2015-01-31 11:34 ` Pali Rohár
2015-01-31 15:13 ` Matthijs van Duin
2015-01-31 19:06 ` Pali Rohár
2015-02-11 12:39 ` Pali Rohár [this message]
2015-02-11 15:22 ` Matthijs van Duin
2015-02-11 20:28 ` Pali Rohár
2015-02-11 20:33 ` Tony Lindgren
2015-02-11 20:40 ` Nishanth Menon
2015-02-18 21:14 ` Pali Rohár
2015-05-28 7:37 ` Pali Rohár
2015-05-28 16:01 ` Tony Lindgren
2015-05-28 20:26 ` Matthijs van Duin
2015-05-28 22:24 ` Tony Lindgren
2015-05-28 22:27 ` Pali Rohár
2015-05-29 0:15 ` Tony Lindgren
2015-05-29 0:58 ` Matthijs van Duin
2015-05-29 1:35 ` Matthijs van Duin
2015-05-29 15:50 ` Tony Lindgren
2015-05-29 18:16 ` Tony Lindgren
2015-05-30 15:22 ` Matthijs van Duin
2015-06-01 17:58 ` Tony Lindgren
2015-06-01 20:32 ` Matthijs van Duin
2015-06-01 20:52 ` Tony Lindgren
2015-06-02 4:21 ` Matthijs van Duin
2015-02-19 18:20 ` Pali Rohár
2015-02-19 20:25 ` Matthijs van Duin
2015-02-19 21:10 ` Aaro Koskinen
2015-01-24 10:40 ` Pali Rohár
2015-01-31 14:38 ` Matthijs van Duin
2015-01-31 19:09 ` Pali Rohár
2015-02-01 1:36 ` Matthijs van Duin
2015-02-01 8:56 ` Pali Rohár
2015-02-11 20:43 ` Pavel Machek
2015-02-11 21:14 ` Pali Rohár
2015-02-09 11:55 ` 3.13-rc3 (commit 7ce93f3) breaks Nokia N900 DT boot Pali Rohár
2013-12-08 14:13 ` Aaro Koskinen
2013-12-08 16:40 ` Tony Lindgren
2013-12-08 17:10 ` Sebastian Reichel
2013-12-08 17:43 ` Tony Lindgren
2013-12-08 17:59 ` Aaro Koskinen
2013-12-08 18:09 ` Sebastian Reichel
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