linux-kernel - Re: Regression in 32-bit ppc kernel

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Date:	Wed, 25 Apr 2012 10:00:12 -0500
From:	Larry Finger <Larry.Finger@...inger.net>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
CC:	Paul Mackerras <paulus@...ba.org>, linuxppc-dev@...ts.ozlabs.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: Regression in 32-bit ppc kernel

On 04/24/2012 11:11 PM, Benjamin Herrenschmidt wrote:
> On Tue, 2012-04-24 at 21:37 -0500, Larry Finger wrote:
>>>> Somewhere between v3.2 and v3.3, the kernel in my Powerbook G4
>> started issuing
>>>> the following traceback on bootup:
>>>
>>> Does it continue working afterward or not at all ?
>>>
>>> Are you using the old IDE driver or the newer libata based
>> pata_macio ?
>>
>> Yes, it finishes the boot, and appears to work correctly. If a device
>> is
>> missing, I do not know what it is.
>>
>> I think I am using the old IDE driver.
>>
> Interesting. Does it make a difference if you switch to pata_macio ?

After a few tries, I managed to change over to pata_macio. Fortunately, most of 
the system used dev-by-id or UUID, thus most of the process was getting all the 
kernel pieces built in.

Unfortunately, the original problem remains. I have resumed the bisecting - only 
11 steps to go. I should have it by Friday! :)

Larry
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