From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965971AbXCFSZy (ORCPT ); Tue, 6 Mar 2007 13:25:54 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965968AbXCFSZy (ORCPT ); Tue, 6 Mar 2007 13:25:54 -0500 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:59543 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S965971AbXCFSZx convert rfc822-to-8bit (ORCPT ); Tue, 6 Mar 2007 13:25:53 -0500 Date: Tue, 06 Mar 2007 10:25:51 -0800 (PST) Message-Id: <20070306.102551.34761735.davem@davemloft.net> To: ilmari@ilmari.org Cc: andi@firstfloor.org, shemminger@linux-foundation.org, jengelh@linux01.gwdg.de, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: Re: [RFC] div64_64 support II From: David Miller In-Reply-To: References: <20070305.162551.41660347.davem@davemloft.net> <20070306140412.GA1470@one.firstfloor.org> X-Mailer: Mew version 5.1.52 on Emacs 21.4 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=iso-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org From: ilmari@ilmari.org (Dagfinn Ilmari Mannsåker) Date: Tue, 06 Mar 2007 18:43:14 +0100 > Andi Kleen writes: > > > Actually on rereading this: is there really any Linux port > > that emulates multiplies in software? I thought that was only > > done on really small microcontrollers or smart cards; but anything > > 32bit+ that runs Linux should have hardware multiply, shouldn't it? > > SPARCv7 (sun4/sun4c) doesn't have hardware mul/div. This includes > SparcStation 1, 1+, 2, SLC, ELC, IPC and IPX. Right and the cypress sun4m parts don't do multiply/divide in hardware either. I believe the Alpha does divide in software too, see arch/alpha/lib/divide.S