From: Robert Schwebel <robert@schwebel.de>
To: Adrian Bunk <bunk@fs.tum.de>
Cc: "Richard B. Johnson" <root@chaos.analogic.com>,
Juergen Beisert <jbeisert@eurodsn.de>,
cliff white <cliffw@osdl.org>,
piggin@cyberone.com.au, mpm@selenic.com,
linux-kernel@vger.kernel.org
Subject: Re: [1/4] better i386 CPU selection
Date: Sat, 17 Jan 2004 10:13:37 +0100 [thread overview]
Message-ID: <20040117091337.GZ5139@pengutronix.de> (raw)
In-Reply-To: <20040117021532.GH12027@fs.tum.de>
Hi,
On Sat, Jan 17, 2004 at 03:15:32AM +0100, Adrian Bunk wrote:
> Besides the AMD Elan cpufreq driver I see nothing where CONFIG_MELAN
> gave you any real difference (except your highest goal is to avoid a
> recompilation when switching from the Pentium 4 to the AMD Elan - but I
> doubt the really "prevents development").
>
> But I'm not religious about this issue. Let Robert decide, the Elan
> support is his child.
>
> > > > - added optimizing CFLAGS for the AMD Elan
> >
> > There are no such different "optimizations" for ELAN.
>
> What's wrong wih the -march=i486 Robert suggested?
I've not followed the 2.6 development regarding the arch selection that
closely; let's collect arguments:
- Is it still possible to run a -march=i486 built kernel on a pentium?
IMHO It would be good to optimize the code for i486, but I'm not that
familiar with how good gcc optimizes for 486 that I can comment this.
- I personally work with lots of cross architectures like ARM, so cross
compiling for an embedded system is no problem for me. But if people
want to test stuff on their pentiums I also have no problem with that.
Other arguments?
Robert
--
Dipl.-Ing. Robert Schwebel | http://www.pengutronix.de
Pengutronix - Linux Solutions for Science and Industry
Handelsregister: Amtsgericht Hildesheim, HRA 2686
Hornemannstraße 12, 31137 Hildesheim, Germany
Phone: +49-5121-28619-0 | Fax: +49-5121-28619-4
next prev parent reply other threads:[~2004-01-17 9:16 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-06 5:48 2.6.1-rc1-tiny2 Matt Mackall
2004-01-06 6:33 ` 2.6.1-rc1-tiny2 Nick Piggin
2004-01-06 6:46 ` 2.6.1-rc1-tiny2 Matt Mackall
2004-01-06 7:08 ` 2.6.1-rc1-tiny2 Nick Piggin
2004-01-10 0:46 ` 2.6.1-rc1-tiny2 Adrian Bunk
2004-01-10 0:50 ` [0/4] better i386 CPU selection Adrian Bunk
2004-01-10 0:52 ` [1/4] " Adrian Bunk
2004-01-10 11:04 ` Wichert Akkerman
2004-01-11 3:13 ` Adrian Bunk
2004-01-14 20:49 ` [-mm patch] " Adrian Bunk
2004-01-16 19:15 ` [1/4] " cliff white
2004-01-16 19:32 ` Richard B. Johnson
2004-01-17 0:01 ` Andrew Morton
2004-01-17 2:57 ` Adrian Bunk
2004-01-19 15:14 ` John Stoffel
2004-01-19 23:42 ` Nick Piggin
2004-01-17 2:15 ` Adrian Bunk
2004-01-17 9:13 ` Robert Schwebel [this message]
2004-01-20 22:10 ` Adrian Bunk
2004-01-20 22:31 ` Richard B. Johnson
2004-01-20 22:47 ` George Anzinger
2004-01-17 10:01 ` aeriksson
2004-01-10 0:57 ` [2/4] move "struct movsl_mask movsl_mask" to usercopy.c Adrian Bunk
2004-01-10 0:57 ` [3/4] proof of concept: make arch/i386/kernel/cpu/Makefile CPU specific Adrian Bunk
2004-01-10 0:58 ` [4/4] proof of concept: make arch/i386/kernel/cpu/mtrr/Makefile " Adrian Bunk
2004-01-10 22:14 ` 2.6.1-rc1-tiny2 Matt Mackall
2004-01-12 2:20 ` 2.6.1-rc1-tiny2 Nick Piggin
2004-01-07 14:06 ` 2.6.1-rc1-tiny2 Jens Axboe
2004-01-07 18:50 ` 2.6.1-rc1-tiny2 Matt Mackall
2004-01-07 19:27 ` 2.6.1-rc1-tiny2 Mitchell Blank Jr
2004-01-07 20:10 ` 2.6.1-rc1-tiny2 Matt Mackall
2004-01-07 21:41 ` 2.6.1-rc1-tiny2 Trond Myklebust
2004-01-07 21:10 ` 2.6.1-rc1-tiny2 Jens Axboe
2004-01-07 21:30 ` 2.6.1-rc1-tiny2 Matt Mackall
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