From: Arnd Bergmann <arnd@arndb•de>
To: linuxppc-dev@ozlabs•org
Cc: Paul Mackerras <paulus@au1•ibm.com>
Subject: Re: [PATCH] powerpc: mpic protected sources
Date: Sat, 21 Jul 2007 02:00:55 +0200 [thread overview]
Message-ID: <200707210200.56466.arnd@arndb.de> (raw)
In-Reply-To: <1184975721.5439.33.camel@localhost.localdomain>
On Saturday 21 July 2007, Benjamin Herrenschmidt wrote:
> 0% probability of being spam.
>=20
> Full report:
> No, score=3D-2.5 required=3D5.0 tests=3DAWL,BAYES_00 autolearn=3Dham ver=
sion=3D3.1.7-deb =A0
> Some HW platforms, such as the new cell blades, requires some MPIC sources
> to be left alone by the operating system. This patch implements support f=
or
> a "protected-sources" property in the mpic controller node containing a l=
ist
> of source numbers to be protected against operating system interference.
>=20
> For those interested in the gory details, the MPIC on the southbridge of
> those blades has some of the processor outputs routed to the cell, and
> at least one routed as a GPIO to the service processor. It will be used
> in the GA product for routing some of the southbridge error interrupts
> to the service processor which implements some of the RAS stuff, such
> as checkstopping when fatal errors occurs before they can propagate.
>=20
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel•crashing.org>
Acked-by: Arnd Bergmann <arnd.bergmann@de•ibm.com>
prev parent reply other threads:[~2007-07-21 0:35 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <OFD54BD0CE.6883770C-ONC125731D.00322C4C-C125731D.00324A9E@de.ibm.com>
2007-07-20 23:55 ` [PATCH] powerpc: mpic protected sources Benjamin Herrenschmidt
2007-07-21 0:00 ` Arnd Bergmann [this message]
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