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From: Arnd Bergmann <arnd@arndb.de>
To: Geoff Levand <geoffrey.levand@am.sony.com>
Subject: Re: PPC upstream kernel ignored DABR bug
Date: Thu, 29 Nov 2007 01:13:28 +0100
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Cc: linuxppc-dev@ozlabs.org, Paul Mackerras <paulus@samba.org>,
	Roland McGrath <roland@redhat.com>,
	Jan Kratochvil <jan.kratochvil@redhat.com>
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On Wednesday 28 November 2007 23:59:36 Geoff Levand wrote:
> > This sounds like a bug recently reported by Uli Weigand. BenH
> > said he'd take a look, but it probably fell under the table.
> > The problem found by Uli is that on certain processors (Cell/B.E.
> > in his case), the DABRX register needs to be set in order for
> > the DABR to take effect.
>
> Just as a note, the PS3's lv1_set_dabr(), which we used for
> ppc_md.set_dabr sets up both the DABRX and DABR registers.

Yes, I know. I tried it on the PS3 first and couldn't reproduce
the bug he saw on the blade.

	Arnd <><