From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Olaf Hering <olaf@aepfle.de>
Cc: Arnd Bergmann <arnd@arndb.de>, Akinobu Mita <mita@fixstars.com>,
linuxppc-dev@ozlabs.org, Paul Mackerras <paulus@samba.org>,
cbe-oss-dev@ozlabs.org
Subject: Re: [patch 3/3] cell: prevent alignment interrupt on local store
Date: Thu, 12 Apr 2007 16:38:10 +1000 [thread overview]
Message-ID: <1176359890.8061.131.camel@localhost.localdomain> (raw)
In-Reply-To: <20070412063321.GA23118@aepfle.de>
On Thu, 2007-04-12 at 08:33 +0200, Olaf Hering wrote:
> On Thu, Apr 12, Benjamin Herrenschmidt wrote:
>
> > Gets altivec and stops working on POWER5 ? no deal :-)
>
> If there is a significant performance gain (not only 9%) and if
> -mcpu=$cell does not generate instructions that wont work on other
> altivec capable cpus and if rpm gets a target ppcaltivec.rpm (or
> similar), as separate binary tree can be done.
-mcpu=cell can possibly generate things that won't run on 970 and 74xx.
There are some new altivec instructions among others...
Ben.
next prev parent reply other threads:[~2007-04-12 6:38 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-10 11:15 [patch 3/3] cell: prevent alignment interrupt on local store Akinobu Mita
2007-04-10 12:52 ` Segher Boessenkool
2007-04-11 3:06 ` Akinobu Mita
2007-04-10 21:22 ` Benjamin Herrenschmidt
2007-04-11 2:56 ` Akinobu Mita
2007-04-11 3:30 ` Benjamin Herrenschmidt
2007-04-11 21:03 ` Segher Boessenkool
2007-04-12 4:23 ` Olaf Hering
2007-04-12 5:26 ` Benjamin Herrenschmidt
2007-04-12 6:33 ` Olaf Hering
2007-04-12 6:38 ` Benjamin Herrenschmidt [this message]
2007-04-12 8:31 ` Gabriel Paubert
2007-04-12 8:48 ` Benjamin Herrenschmidt
2007-04-12 6:50 ` Segher Boessenkool
2007-04-12 6:57 ` [Cbe-oss-dev] " Michael Ellerman
2007-04-12 7:07 ` Segher Boessenkool
2007-04-12 18:43 ` Arnd Bergmann
2007-04-12 18:55 ` Arnd Bergmann
2007-04-12 19:57 ` Segher Boessenkool
2007-04-12 19:52 ` Segher Boessenkool
2007-04-12 13:01 ` [RFC, PATCH] selection of CPU optimization Arnd Bergmann
2007-04-12 16:45 ` Kumar Gala
2007-04-12 17:26 ` [Cbe-oss-dev] " Arnd Bergmann
2007-04-12 18:17 ` Kumar Gala
2007-04-12 19:25 ` Arnd Bergmann
2007-04-12 20:04 ` Olof Johansson
2007-04-12 20:01 ` Segher Boessenkool
2007-04-12 20:22 ` Olof Johansson
2007-04-12 20:22 ` Segher Boessenkool
2007-04-12 19:50 ` Segher Boessenkool
2007-04-13 0:10 ` Arnd Bergmann
2007-04-13 2:03 ` Olof Johansson
2007-04-13 18:43 ` Segher Boessenkool
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