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Date: Sun, 22 Jul 2012 07:44:29 -0700 (PDT)
From: Hugh Dickins <hughd@google.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: next/mmotm unbootable on G5: irqdomain
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Cc: Stephen Rothwell <sfr@canb.auug.org.au>, linux-kernel@vger.kernel.org,
 Milton Miller <miltonm@bga.com>, Paul Mundt <lethal@linux-sh.org>,
 Rob Herring <rob.herring@calxeda.com>,
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On Sun, 22 Jul 2012, Benjamin Herrenschmidt wrote:
> On Sat, 2012-07-21 at 19:47 -0700, Hugh Dickins wrote:
> > I have to revert the patch below from mmotm 2012-07-20-16-30 or
> > next-20120720 in order to boot on the PowerPC G5: otherwise it
> > freezes before switching to the framebuffer console - but I'm
> > not certain where because that initial console doesn't scroll
> > (there are mpic messages at bottom and at top of screen, probably
> > later messages at the top but I don't know the sequence).
> 
> Remind me your G5 variant ? (/proc/cpuinfo will do). I'll have a look
> tomorrow (and thanks for testing !).
> 
> > commit 94f036a1f242f98cc30700b7676c07270a9c5c27
> > Author: Grant Likely <grant.likely@secretlab.ca>
> > Date:   Sun Jun 3 22:04:39 2012 -0700
> > 
> > irqdomain: eliminate slow-path revmap lookups

Thanks, Ben - here's my /proc/cpuinfo:

processor	: 0
cpu		: PPC970MP, altivec supported
clock		: 2500.000000MHz
revision	: 1.1 (pvr 0044 0101)

processor	: 1
cpu		: PPC970MP, altivec supported
clock		: 2500.000000MHz
revision	: 1.1 (pvr 0044 0101)

processor	: 2
cpu		: PPC970MP, altivec supported
clock		: 2500.000000MHz
revision	: 1.1 (pvr 0044 0101)

processor	: 3
cpu		: PPC970MP, altivec supported
clock		: 2500.000000MHz
revision	: 1.1 (pvr 0044 0101)

timebase	: 33333333
platform	: PowerMac
model		: PowerMac11,2
machine		: PowerMac11,2
motherboard	: PowerMac11,2 MacRISC4 Power Macintosh 
detected as	: 337 (PowerMac G5 Dual Core)
pmac flags	: 00000000
L2 cache	: 1024K unified
pmac-generation	: NewWorld

Hugh