linux-kernel - Re: Bug#609371: linux-image-2.6.37-trunk-sparc64: module scsi

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Date:	Fri, 21 Jan 2011 18:06:04 +0000
From:	Richard Mortimer <richm@...elvet.org.uk>
To:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
CC:	David Miller <davem@...emloft.net>, rostedt@...dmis.org,
	609371@...s.debian.org, ben@...adent.org.uk,
	sparclinux@...r.kernel.org, linux-kernel@...r.kernel.org,
	fweisbec@...il.com, mingo@...hat.com
Subject: Re: Bug#609371: linux-image-2.6.37-trunk-sparc64: module scsi_mod:
 Unknown relocation: 36

On 21/01/2011 00:04, Mathieu Desnoyers wrote:
> * David Miller (davem@...emloft.net) wrote:
>> From: Mathieu Desnoyers<mathieu.desnoyers@...icios.com>
>> Date: Wed, 19 Jan 2011 17:33:39 -0500
>>
>>> So I guess we go for the following. Is it verbose enough ?
>>
>> It's got all of the details that seem to matter, thanks.
>
> I'm letting people following this thread and the bug report know that I posted
> the patch we discussed about here in the following thread:
>
> https://lkml.org/lkml/2011/1/19/509
>
> Feedback is welcome,
>
Hi Mathieu,

Thanks for this.

The good news is that I have a 2.6.37 kernel + your patches booting and 
it has been running for about an hour on sparc64/Sun Fire V120. I did a 
bit of poking around in /debug and turned on/off a bit of tracing and 
nothing broke.

I did have a few problems applying your patch series. Your diffs have 
semicolons at the end of a couple of the macros that don't appear in the 
mainline 2.6.37. One was circa line 174 of include/linux/tracepoint.h 
but I don't have the other to hand at the moment and I don't have much 
time before I need to go out.

I'm also getting a lot of Kernel unaligned access errors from the 
kernel. I don't know if they are related to this or not and this is the 
first time that I personally have got 2.6.37 to boot on sparc64. The 
messages that I am getting seem to be repeats of

[ 4376.807811] Kernel unaligned access at TPC[456e94] 
try_to_wake_up+0x58/0xec
[ 4376.807908] Kernel unaligned access at TPC[75541c] schedule+0x454/0x660
[ 4376.808044] Kernel unaligned access at TPC[75541c] schedule+0x454/0x660
[ 4376.808871] Kernel unaligned access at TPC[456e94] 
try_to_wake_up+0x58/0xec
[ 4376.808965] Kernel unaligned access at TPC[75541c] schedule+0x454/0x660
[ 4381.813354] log_unaligned: 337 callbacks suppressed

I have to go out now but will be around later/over the weekend.

Regards

Richard

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