From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264826AbUETCBp (ORCPT ); Wed, 19 May 2004 22:01:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264829AbUETCBp (ORCPT ); Wed, 19 May 2004 22:01:45 -0400 Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:19436 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id S264826AbUETCBo (ORCPT ); Wed, 19 May 2004 22:01:44 -0400 Message-ID: <40AC117B.3010800@pobox.com> Date: Wed, 19 May 2004 22:01:31 -0400 From: Jeff Garzik User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030703 X-Accept-Language: en-us, en MIME-Version: 1.0 To: davidm@hpl.hp.com CC: Andrew Morton , Robert.Picco@hp.com, linux-kernel@vger.kernel.org, venkatesh.pallipadi@intel.com Subject: Re: [PATCH] HPET driver References: <40A3F805.5090804@hp.com> <40A40204.1060509@pobox.com> <40A93DA5.4020701@hp.com> <20040517160508.63e1ddf0.akpm@osdl.org> <20040517161212.659746db.akpm@osdl.org> <40A94857.9030507@pobox.com> <20040517163356.506a9c8f.akpm@osdl.org> <40A94DF7.30307@pobox.com> <20040517184621.0da52a3c.akpm@osdl.org> <40A96E11.5040000@pobox.com> <16553.28862.590897.171478@napali.hpl.hp.com> In-Reply-To: <16553.28862.590897.171478@napali.hpl.hp.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org David Mosberger wrote: > What about atomicity? Are there any platforms where > {read,write}[bwl]() don't translate into a single bus-transaction? I > didn't think so, but I could well be wrong. This is a good point, as the ensuing thread indicates. Current usage by drivers doesn't require atomicity, so the proposed implementation is fine. Thinking about the atomicity issues now is definitely something that should be done, though... Jeff