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Date:	Wed, 07 Mar 2007 22:11:56 -0800
From:	Jim Gifford <maillist@jg555.com>
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To:	Ralf Baechle <ralf@linux-mips.org>
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Subject: Re: Building 64 bit kernel on Cobalt
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Ralf Baechle wrote:
> On Sun, Mar 04, 2007 at 03:18:45PM -0800, Jim Gifford wrote:
>
>   
>> Last working Kernel was 2.6.19 series.
>>
>> Some changes from 2.6.19 and the 2.6.20 make it impossible to build a 64 
>> bit kernel to boot on the cobalt. Ya, I know why, building a N32 
>> actually but need a 64 bit kernel in order to do that. Anyone got any 
>> suggestions. Looking through the difference between the kernels to 
>> figure this out, but it's like looking for a needle in a haystack. Any 
>> suggestions as to a starting point?
>>     
>
> Try git-bisect to track down the changeset that broke things.
>
>   Ralf
>
>   
We got it nailed down to arch/mips/kernel /setup.c. But we have not 
isolated which change is actually causing it.

We do know that reverting back to the 2.6.19.x arch/mips/kernel /setup.c 
will fix the issue. We will continue to dwindle it down until we come up 
with the offender.