From: Rod Whitby <rod@whitby.id.au>
To: Michael-Luke Jones <mlj28@cam.ac.uk>,
Alexey Zaytsev <alexey.zaytsev@gmail.com>
Cc: netdev@vger.kernel.org, Tomasz Chmielewski <mangoo@wpkg.org>,
linux-kernel@vger.kernel.org, Krzysztof Halasa <khc@pm.waw.pl>,
linux-arm-kernel@lists.arm.linux.org.uk
Subject: Why run ixp4xx LE? (Was: [PATCH] Intel IXP4xx network drivers v.2 - Ethernet and HSS)
Date: Wed, 09 May 2007 14:50:38 +0930 [thread overview]
Message-ID: <46415A26.6080209@whitby.id.au> (raw)
In-Reply-To: <FCBED7DF-2A16-419A-865D-663C34437579@cam.ac.uk>
Michael-Luke Jones wrote:
> On 8 May 2007, at 09:48, Alexey Zaytsev wrote:
>
>> I was always curious, why do people want to run ixp4xx in LE mode? What
>> are the benefits that overweight the obvious performance degradation?
>
> Debian.
> http://www.debian.org/ports/arm/
And also out-of-kernel drivers for things like webcams, which have been
naively written for x86 little endian and have no concept of endian
neutrality. In some cases it's just easier to run LE instead of
fighting with the driver code.
BTW, for the consumer-level IXP42x devices (like the NSLU2) the
performance difference is *completely* overwhelmed by slowness in the
rest of the system.
-- Rod
next prev parent reply other threads:[~2007-05-09 5:22 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-08 8:29 [PATCH] Intel IXP4xx network drivers v.2 - Ethernet and HSS Tomasz Chmielewski
2007-05-08 8:48 ` Alexey Zaytsev
2007-05-08 8:54 ` Michael-Luke Jones
2007-05-09 5:20 ` Rod Whitby [this message]
2007-05-08 8:55 ` Tomasz Chmielewski
2007-05-08 13:44 ` Gordon Farquharson
2007-05-08 15:28 ` Krzysztof Halasa
2007-05-08 15:52 ` Lennert Buytenhek
2007-05-08 17:20 ` Krzysztof Halasa
2007-05-08 17:31 ` Tomasz Chmielewski
2007-05-08 17:51 ` Krzysztof Halasa
2007-05-09 8:58 ` Marcus Better
2007-05-09 9:12 ` Koen Kooi
2007-05-09 9:21 ` Lennert Buytenhek
2007-05-09 9:35 ` Marcus Better
2007-05-09 11:04 ` Lennert Buytenhek
2007-05-09 14:22 ` David Acker
2007-05-09 14:45 ` Michael-Luke Jones
2007-05-15 21:20 ` Lennert Buytenhek
2007-05-08 16:34 ` Krzysztof Halasa
2007-05-16 7:13 ` Christoph Hellwig
2007-05-16 7:35 ` Michael-Luke Jones
2007-05-16 9:41 ` Lennert Buytenhek
2007-05-16 10:20 ` Michael-Luke Jones
2007-05-16 10:46 ` Rod Whitby
2007-05-16 10:56 ` Lennert Buytenhek
2007-05-16 11:35 ` Rod Whitby
2007-05-16 12:00 ` Lennert Buytenhek
2007-05-16 14:58 ` Krzysztof Halasa
2007-05-16 14:44 ` Krzysztof Halasa
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