Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261215AbTIKLGl (ORCPT ); Thu, 11 Sep 2003 07:06:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261218AbTIKLGl (ORCPT ); Thu, 11 Sep 2003 07:06:41 -0400 Received: from pix-525-pool.redhat.com ([66.187.233.200]:27413 "EHLO lacrosse.corp.redhat.com") by vger.kernel.org with ESMTP id S261215AbTIKLGi (ORCPT ); Thu, 11 Sep 2003 07:06:38 -0400 Date: Thu, 11 Sep 2003 12:04:35 +0100 From: Dave Jones To: Adrian Bunk Cc: Alan Cox , Linux Kernel Mailing List Subject: Re: RFC: [2.6 patch] better i386 CPU selection Message-ID: <20030911110435.GA1225@redhat.com> Mail-Followup-To: Dave Jones , Adrian Bunk , Alan Cox , Linux Kernel Mailing List References: <200309071647.h87Glp4t014359@harpo.it.uu.se> <20030907174341.GA21260@mail.jlokier.co.uk> <1062958188.16972.49.camel@dhcp23.swansea.linux.org.uk> <20030911062816.GX27368@fs.tum.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030911062816.GX27368@fs.tum.de> User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 974 Lines: 31 On Thu, Sep 11, 2003 at 08:28:16AM +0200, Adrian Bunk wrote: > - Does the Cyrix III support 686 instructions? Depends on your definition of 686. If you follow the Intel definition (where CMOV is optional), yes. If you follow the gcc definition (where CMOV is assumed), no. Except for the latest Nehemiah cores (which now have CMOV). > - Do -march=winchip{2,-c6} and -march=c3{,-2} add anything not in > -march=i686 (except optimizations of otherwise compatible code)? Not afaik. > - Which CPUs exactly need X86_ALIGNMENT_16? Unsure. This could use testing on a few systems. > - X86_GOOD_APIC: Are there really that many processors with a bad APIC? Mikael ? Dave -- Dave Jones http://www.codemonkey.org.uk - 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/