From: Ingo Molnar <mingo@elte.hu>
To: Michael Ellerman <michael@ellerman.id.au>
Cc: Dave C Boutcher <sleddog@us.ibm.com>,
"Serge E. Hallyn" <serue@us.ibm.com>,
Andrew Morton <akpm@osdl.org>,
linuxppc64-dev@ozlabs.org, paulus@au1.ibm.com, anton@au1.ibm.com,
linux-kernel@vger.kernel.org
Subject: Re: 2.6.15-mm4 failure on power5
Date: Tue, 17 Jan 2006 15:00:50 +0100 [thread overview]
Message-ID: <20060117140050.GA13188@elte.hu> (raw)
In-Reply-To: <200601180032.46867.michael@ellerman.id.au>
* Michael Ellerman <michael@ellerman.id.au> wrote:
> On Tue, 17 Jan 2006 08:52, Dave C Boutcher wrote:
> > 2.6.15-mm4 won't boot on my power5 either. I tracked it down to the
> > following mutex patch from Ingo: kernel-kernel-cpuc-to-mutexes.patch
> >
> > If I revert just that patch, mm4 boots fine. Its really not obvious to
> > me at all why that patch is breaking things though...
>
> My POWER5 (gr) LPAR seems to boot ok (3 times so far) with that patch,
> guess it's something subtle. That's with CONFIG_DEBUG_MUTEXES=y. And
> it's just booted once with CONFIG_DEBUG_MUTEXES=n.
>
> And now it's booted the full mm4 patch set without blinking.
so it booted fine with CONFIG_DEBUG_MUTEXES=n but with that patch not
applied?
the patch will likely work around the bug, so DEBUG_MUTEXES=y/n should
make no difference with that patch applied.
Ingo
next prev parent reply other threads:[~2006-01-17 14:00 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-16 6:35 2.6.15-mm4 failure on power5 Serge E. Hallyn
2006-01-16 7:05 ` Andrew Morton
2006-01-16 13:00 ` Michael Ellerman
2006-01-16 15:37 ` Serge E. Hallyn
2006-01-16 21:52 ` Dave C Boutcher
2006-01-17 1:09 ` Andrew Morton
2006-01-17 8:17 ` Ingo Molnar
2006-01-17 8:47 ` Andrew Morton
2006-01-17 16:52 ` Dave C Boutcher
2006-01-17 16:55 ` Dave C Boutcher
2006-01-18 6:40 ` Nathan Lynch
2006-01-18 7:07 ` Ingo Molnar
2006-01-18 7:53 ` Nathan Lynch
2006-01-18 8:08 ` Nathan Lynch
2006-01-17 12:22 ` Serge E. Hallyn
2006-01-17 13:32 ` Michael Ellerman
2006-01-17 14:00 ` Ingo Molnar [this message]
2006-01-18 0:19 ` Michael Ellerman
2006-01-18 3:32 ` Dave C Boutcher
2006-01-18 6:37 ` Ingo Molnar
2006-01-18 6:53 ` Andrew Morton
2006-01-18 7:04 ` Ingo Molnar
2006-01-18 7:28 ` Nathan Lynch
2006-01-18 7:37 ` Andrew Morton
2006-01-18 8:08 ` Ingo Molnar
2006-01-18 8:24 ` Andrew Morton
2006-01-18 9:02 ` [patch] work around ppc64 bootup bug by making mutex-debugging save/restore irqs Ingo Molnar
2006-01-18 9:18 ` [patch] turn on might_sleep() in early bootup code too Ingo Molnar
2006-01-18 10:35 ` Andrew Morton
2006-01-18 10:43 ` Ingo Molnar
2006-01-18 11:15 ` [patch] make bug messages more consistent Ingo Molnar
2006-01-19 4:39 ` [patch] turn on might_sleep() in early bootup code too Zwane Mwaikambo
2006-01-18 10:46 ` Nick Piggin
2006-01-18 11:07 ` Ingo Molnar
2006-01-18 12:53 ` [patch] add trylock_kernel() Ingo Molnar
2006-01-18 7:38 ` 2.6.15-mm4 failure on power5 Arjan van de Ven
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