From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263601AbUEWVRM (ORCPT ); Sun, 23 May 2004 17:17:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263603AbUEWVRK (ORCPT ); Sun, 23 May 2004 17:17:10 -0400 Received: from mx1.redhat.com ([66.187.233.31]:61580 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S263601AbUEWVQ7 (ORCPT ); Sun, 23 May 2004 17:16:59 -0400 Date: Sun, 23 May 2004 17:14:02 -0400 From: Alan Cox To: Jeff Garzik Cc: Willy Tarreau , Christoph Hellwig , akpm@osdl.org, linux-kernel@vger.kernel.org, alan@redhat.com, vda@port.imtp.ilyichevsk.odessa.ua Subject: Re: i486 emu in mainline? Message-ID: <20040523211402.GB24714@devserv.devel.redhat.com> References: <20040522234059.GA3735@infradead.org> <20040523082912.GA16071@alpha.home.local> <40B0C0C7.9090604@pobox.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <40B0C0C7.9090604@pobox.com> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, May 23, 2004 at 11:18:31AM -0400, Jeff Garzik wrote: > > - There are people (like Alan) who think that this should not go into > > mainline because this is a distro problem and nothing else. He says > > that only i386 packages should be installed on an i386 machine. He's > > perfectly right about this. I found it interesting for people like > > > I disagree. > > I want to add "old Alpha" emulation code, so that older Alphas can run > binaries built on the newer alphas. Well it always depends on the platform. cmov emulation isnt useful because i686 gcc generates too many for it to be of value. For alpha it depends on the commonness of the emulated instructions and the emulation cost. Either way it is a user space problem in almost all situations. See http://www-sop.inria.fr/geometrica/team/Sylvain.Pion/progs/mmx-emu/