Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263498AbTIWTYH (ORCPT ); Tue, 23 Sep 2003 15:24:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263497AbTIWTXN (ORCPT ); Tue, 23 Sep 2003 15:23:13 -0400 Received: from pizda.ninka.net ([216.101.162.242]:31708 "EHLO pizda.ninka.net") by vger.kernel.org with ESMTP id S263490AbTIWTV4 (ORCPT ); Tue, 23 Sep 2003 15:21:56 -0400 Date: Tue, 23 Sep 2003 12:08:56 -0700 From: "David S. Miller" To: Andreas Schwab Cc: bcrl@kvack.org, tony.luck@intel.com, davidm@hpl.hp.com, davidm@napali.hpl.hp.com, peter@chubb.wattle.id.au, ak@suse.de, iod00d@hp.com, peterc@gelato.unsw.edu.au, linux-ns83820@kvack.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: NS83820 2.6.0-test5 driver seems unstable on IA64 Message-Id: <20030923120856.3e538345.davem@redhat.com> In-Reply-To: References: <20030923142925.A16490@kvack.org> <20030923115200.1f5b44df.davem@redhat.com> <20030923120110.4a039808.davem@redhat.com> X-Mailer: Sylpheed version 0.9.2 (GTK+ 1.2.6; sparc-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 840 Lines: 20 On Tue, 23 Sep 2003 21:16:33 +0200 Andreas Schwab wrote: > Or the compiler generates code to take advantage of the fact that the > lower address bits are zero. The only place where I can se it doing this legally is for structure offsets. For example where a "load 4 byte word" instruction takes an offsetable address composed of a reg and an integer offset where the integer offset must be a multiple of 4. This rule we do abide by in the kernel, because PARISC requires this. Anything more is asking for trouble, I wouldn't want to use such a compiler in the real world :) - 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/