Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754530AbZKHTiZ (ORCPT ); Sun, 8 Nov 2009 14:38:25 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753925AbZKHTiY (ORCPT ); Sun, 8 Nov 2009 14:38:24 -0500 Received: from mail.sdinet.de ([78.47.32.153]:37296 "EHLO mail.sdinet.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753856AbZKHTiX (ORCPT ); Sun, 8 Nov 2009 14:38:23 -0500 X-Greylist: delayed 499 seconds by postgrey-1.27 at vger.kernel.org; Sun, 08 Nov 2009 14:38:23 EST Date: Sun, 8 Nov 2009 20:29:55 +0100 (CET) From: Sven-Haegar Koch To: Pavel Machek cc: Matteo Croce , "H. Peter Anvin" , Ingo Molnar , linux-kernel@vger.kernel.org Subject: Re: i686 quirk for AMD Geode In-Reply-To: <20091108181016.GB32364@elf.ucw.cz> Message-ID: References: <40101cc30910021912r17b3a08bue1b9412e4fa47d89@mail.gmail.com> <20091003072127.GC21407@elte.hu> <40101cc30911060659k7b3b6428ob1340e476bdbac5b@mail.gmail.com> <4AF4526B.4060101@zytor.com> <40101cc30911061418w357b74d8i3bf9a9537de052d4@mail.gmail.com> <20091108173708.GF1372@ucw.cz> <40101cc30911080940s18eb26bbg641beeaddbc25c3d@mail.gmail.com> <20091108181016.GB32364@elf.ucw.cz> User-Agent: Alpine 2.00 (DEB 1167 2008-08-23) MIME-Version: 1.0 Content-Type: MULTIPART/MIXED; BOUNDARY="8323328-409339750-1257708600=:30789" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2507 Lines: 67 This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --8323328-409339750-1257708600=:30789 Content-Type: TEXT/PLAIN; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE On Sun, 8 Nov 2009, Pavel Machek wrote: > On Sun 2009-11-08 18:40:06, Matteo Croce wrote: > > On Sun, Nov 8, 2009 at 6:37 PM, Pavel Machek wrote: > > > On Fri 2009-11-06 23:18:06, Matteo Croce wrote: > > >> On Fri, Nov 6, 2009 at 5:44 PM, H. Peter Anvin wrote= : > > >> > On 11/06/2009 06:59 AM, Matteo Croce wrote: > > >> >> indeed it has MMX, MMXEXT and CMOV, just lacks the long NOP instr= uction (NOPL). > > >> > > > >> > MMX and MMXEXT are hardly hallmarks of i686, which leaves only cmo= v. > > >> > I'm somewhat wondering about the general value of this patch; is i= 686 > > >> > code really that much faster on Geode that it's worth it? > > >> > > > >> > ? ? ? ?-hpa > > >> > > > >> > -- > > >> > H. Peter Anvin, Intel Open Source Technology Center > > >> > I work for Intel. ?I don't speak on their behalf. > > >> > > > >> > > > >> > > >> yes, I did some test like gzip, bzip2, lame etc and they give more o= r less > > >> the same results of dhrystone > > >> > > >> root@alix:/usr/src# CFLAGS=3D'-march=3Di586' ./dry.c > > >> Microseconds for one run through Dhrystone: =A0 =A0 =A0 =A01.4 > > >> Dhrystones per Second: =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 = =A0 =A0740741 > > > ... > > >> root@alix:/usr/src# CFLAGS=3D'-march=3Di686' ./dry.c > > >> Trying 5000000 runs through Dhrystone: > > >> Microseconds for one run through Dhrystone: =A0 =A0 =A0 =A01.2 > > >> Dhrystones per Second: =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 = =A0 =A0841751 > > > > > > Teach gcc that geodelx exists? No need to break kernel for that... an= d > > > you probably can gain even bigger gains. But no standard distribution will be made available in a geode special=20 version - not enough machines in the marekt. So I think it is better to=20 be able to use the i686 specific things they already support, like=20 libc6-686 from debian for example. c'ya sven --=20 The lights are fading out, once more... --8323328-409339750-1257708600=:30789-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/