From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Justin P. Mattock" <justinmattock@gmail.com>
Subject: Re: ohci1394_dma=early crash since 2.6.32 (was Re: [Bug		 #14487]
 PANIC: early exception 08 rip 246:10 error		 ffffffff810251b5 cr2 0)
Date: Thu, 04 Feb 2010 02:13:58 -0800
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To: Jan Beulich <JBeulich@novell.com>
Cc: Ingo Molnar <mingo@elte.hu>, Dan Carpenter <error27@gmail.com>, bernhard.kaindl@gmx.net, Thomas Gleixner <tglx@linutronix.de>, linux1394-devel@lists.sourceforge.net, Stefan Richter <stefanr@s5r6.in-berlin.de>, Rafael Wysocki <rjw@sisk.pl>, Kernel Testers List <kernel-testers@vger.kernel.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, ebiderman@xmission.com, hpa@zytor.com

On 02/04/10 01:57, Jan Beulich wrote:
>>>> "Justin P. Mattock"<justinmattock@gmail.com>  04.02.10 10:48>>>
>> I see:
>>
>> ohci.registers = (void *)fix_to_virt(FIX_OHCI1394_BASE);
>>
>> then I think it calls:
>>
>> set_fixmap_nocache(FIX_OHCI1394_BASE, ohci_base);
>>
>> I'm guessing somewhere with the fix_to_virt might be something
>> (but could be wrong);
>
> No, it ought to be that set_fixmap_nocache().
>
> Jan
>
>


hmm..
as a quick test I did try:

set_fixmap(FIX_OHCI1394_BASE, ohci_base);
(maybe ohci_base)

which still hit, maybe something else
in the set of calls is hitting
i.g. address specific or something.
(I'll have to keep looking on this);

Justin P. mattock