Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751844AbWCJTXd (ORCPT ); Fri, 10 Mar 2006 14:23:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752038AbWCJTXd (ORCPT ); Fri, 10 Mar 2006 14:23:33 -0500 Received: from mx.pathscale.com ([64.160.42.68]:60131 "EHLO mx.pathscale.com") by vger.kernel.org with ESMTP id S1751844AbWCJTXd (ORCPT ); Fri, 10 Mar 2006 14:23:33 -0500 Subject: Re: [PATCH 7 of 20] ipath - misc driver support code From: "Bryan O'Sullivan" To: Roland Dreier Cc: rolandd@cisco.com, gregkh@suse.de, akpm@osdl.org, davem@davemloft.net, linux-kernel@vger.kernel.org, openib-general@openib.org In-Reply-To: References: <2f16f504dd4b98c2ce7c.1141922820@localhost.localdomain> <1141946942.10693.36.camel@serpentine.pathscale.com> Content-Type: text/plain Organization: PathScale, Inc. Date: Fri, 10 Mar 2006 11:23:28 -0800 Message-Id: <1142018608.29925.96.camel@serpentine.pathscale.com> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 (2.2.3-2.fc4) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 558 Lines: 16 On Thu, 2006-03-09 at 15:36 -0800, Roland Dreier wrote: > If Via behaves like > Intel and reorders writes, but ipath_unordered_wc() returns false, > then won't your driver break in a subtle way? No, it'll issue lots of error messages, because the chip will detect the bad access patterns and interrupt us.