On 04/24/2012 11:11 PM, Benjamin Herrenschmidt wrote:

On Tue, 2012-04-24 at 21:37 -0500, Larry Finger wrote:

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Somewhere between v3.2 and v3.3, the kernel in my Powerbook G4

started issuing

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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