From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261385AbTDCRDu (for ); Thu, 3 Apr 2003 12:03:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261386AbTDCRDu (for ); Thu, 3 Apr 2003 12:03:50 -0500 Received: from 12-237-214-24.client.attbi.com ([12.237.214.24]:16750 "EHLO wf-rch.cirr.com") by vger.kernel.org with ESMTP id S261385AbTDCRDr (for ); Thu, 3 Apr 2003 12:03:47 -0500 Message-ID: <3E8C6C1E.8080901@acm.org> Date: Thu, 03 Apr 2003 11:15:10 -0600 From: Corey Minyard User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.3) Gecko/20030313 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Robert Love CC: Antonio Vargas , William Lee Irwin III , linux-kernel@vger.kernel.org Subject: Re: fairsched + O(1) process scheduler References: <20030401125159.GA8005@wind.cocodriloo.com> <20030401164126.GA993@holomorphy.com> <20030401221927.GA8904@wind.cocodriloo.com> <20030402124643.GA13168@wind.cocodriloo.com> <20030402163512.GC993@holomorphy.com> <20030402213629.GB13168@wind.cocodriloo.com> <1049319300.2872.21.camel@localhost> <20030402220734.GC13168@wind.cocodriloo.com> <1049321427.2872.25.camel@localhost> In-Reply-To: <1049321427.2872.25.camel@localhost> X-Enigmail-Version: 0.74.0.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Robert Love wrote: >Yep. Everyone architecture I know of - and certainly all that Linux >support - can do atomic read/writes to a word. Thinking about it, it >would be odd if not (two writes to a single word interleaving?). There >are places this assumption is used. > I believe this is true if the data is aligned. I don't think it's true for unaligned access on an x86. - -Corey -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQE+jGwdIXnXXONXERcRAg7NAJ9p3/dhYIvyQrUSR9RQhzOHebJxcQCgnnIt TX41ng3GQo8SlGXLKmJvSKA= =wjHE -----END PGP SIGNATURE-----