From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from terminus.zytor.com ([198.137.202.10]:48651 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754232AbXK1Cz1 (ORCPT ); Tue, 27 Nov 2007 21:55:27 -0500 Message-ID: <474CD592.2020108@zytor.com> (sfid-20071128_025532_297962_520ED368) Date: Tue, 27 Nov 2007 18:42:26 -0800 From: "H. Peter Anvin" MIME-Version: 1.0 To: Stephen Hemminger CC: Herbert Xu , Johannes Berg , dsd@gentoo.org, davem@davemloft.net, netdev@vger.kernel.org, linux-wireless@vger.kernel.org Subject: Re: wireless vs. alignment requirements References: <1195893216.4149.186.camel@johannes.berg> <20071124133200.GA27531@gondor.apana.org.au> <1195912176.4149.194.camel@johannes.berg> <20071124141319.GA27819@gondor.apana.org.au> <4748855C.5090103@linux-foundation.org> <474C50D7.5010901@zytor.com> <20071127103940.314c7844@freepuppy.rosehill> In-Reply-To: <20071127103940.314c7844@freepuppy.rosehill> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-wireless-owner@vger.kernel.org List-ID: Stephen Hemminger wrote: > > Is there any standard kernel config define for "this platform can't do > unaligned accesses"? > Not that I know of, but there should be. To be somewhat more complexicated, some platforms (e.g. MIPS) can do unaligned references quite cheaply, but they need different opcodes to do so. -hpa