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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Michael Ellerman <mpe@ellerman.id.au>,
	Christian Kujau <lists@nerdbynature.de>,
	linuxppc-dev@lists.ozlabs.org
Subject: Re: 4.8.0-rc1: Invalid memory access at $SRR0: 0140f86c $SRR1: 00003030
Date: Wed, 10 Aug 2016 17:18:14 +1000	[thread overview]
Message-ID: <1470813494.3015.92.camel@kernel.crashing.org> (raw)
In-Reply-To: <87inv9te2n.fsf@concordia.ellerman.id.au>

On Wed, 2016-08-10 at 14:58 +1000, Michael Ellerman wrote:
> Benjamin Herrenschmidt <benh@kernel.crashing.org> writes:
> 
> > 
> > On Tue, 2016-08-09 at 02:06 -0700, Christian Kujau wrote:
> > > 
> > > On Mon, 8 Aug 2016, Christian Kujau wrote:
> > > > 
> > > > 
> > > > while trying to upgrade this PowerBook G4 from 4.7-rc7 to 4.8-
> > > > rc1,
> > > > it's 
> > > > unable to boot the Yaboot (v1.3.16 from Debian/stable) boot
> > > > loader:
> > 
> > There should already be a fix for that:
> > 
> > http://patchwork.ozlabs.org/patch/654560/
> > 
> > It should be in Michael's tree if not already in Linus.
> 
> That fix is in rc1, so this must be a different bug.

It's all the jump label cruft that landed in apply_feature_fixups()

You can't call random call there. On ppc32, it's running in that
weirdo environment where the kernel isn't running at its linked
address and we need to manually RELOC() everything.

I'm moving them to a separate init call, patch on its way...

Cheers,
Ben.

  parent reply	other threads:[~2016-08-10  7:18 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-08-09  5:19 4.8.0-rc1: Invalid memory access at $SRR0: 0140f86c $SRR1: 00003030 Christian Kujau
2016-08-09  9:06 ` Christian Kujau
2016-08-09 11:52   ` Benjamin Herrenschmidt
2016-08-10  1:39     ` Christian Kujau
2016-08-10  4:58     ` Michael Ellerman
2016-08-10  5:25       ` Christian Kujau
2016-08-10  7:02         ` Michael Ellerman
2016-08-10  7:27           ` [PATCH] powerpc: Fix crash during static key init on ppc32 Benjamin Herrenschmidt
2016-08-10  8:17             ` Christian Kujau
2016-08-10  8:52               ` Gabriel Paubert
2016-08-11  0:25                 ` Christian Kujau
2016-08-11 11:16             ` Michael Ellerman
2016-08-10  7:18       ` Benjamin Herrenschmidt [this message]
2016-08-10  9:33         ` 4.8.0-rc1: Invalid memory access at $SRR0: 0140f86c $SRR1: 00003030 Michael Ellerman

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