linux-kernel - Re: [BISECTED REGRESSION] b43legacy broken on G4 PowerBook

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Message-ID: <20190613072937.GA12093@lst.de>
Date:   Thu, 13 Jun 2019 09:29:37 +0200
From:   Christoph Hellwig <hch@....de>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:     Larry Finger <Larry.Finger@...inger.net>,
        Christoph Hellwig <hch@....de>,
        Aaro Koskinen <aaro.koskinen@....fi>,
        linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
        Christian Zigotzky <chzigotzky@...osoft.de>,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [BISECTED REGRESSION] b43legacy broken on G4 PowerBook

On Thu, Jun 13, 2019 at 07:59:51AM +1000, Benjamin Herrenschmidt wrote:
> > With the patch for Kconfig above, and the original patch setting 
> > ARCH_ZONE_DMA_BITS to 30, everything works.
> > 
> > Do you have any ideas on what should trigger the change in ARCH_ZONE_BITS? 
> > Should it be CONFIG_PPC32 defined, or perhaps CONFIG_G4_CPU defined?
> 
> I think CONFIG_PPC32 is fine

I'll cook up a patch unless someone beats me to it.