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

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Message-ID: <1335390257.21961.53.camel@pasglop>
Date:	Thu, 26 Apr 2012 07:44:17 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Larry Finger <Larry.Finger@...inger.net>
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 Wed, 2012-04-25 at 10:00 -0500, Larry Finger wrote:
> 
> 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! :)
> 
Thanks !

Do we know what the bad interrupt maps to ? Also what is the value of
NR_IRQ and do you have SPARSE_IRQ enabled ? Can you try with the latter
disabled and NR_IRQ set to something large, such as 128 ?

(You may be able to check the interrupt mapping in debugfs)

Cheers,
Ben.


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