From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 24 Mar 2003 12:43:54 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 24 Mar 2003 12:43:54 -0500 Received: from nat-pool-rdu.redhat.com ([66.187.233.200]:2012 "EHLO devserv.devel.redhat.com") by vger.kernel.org with ESMTP id ; Mon, 24 Mar 2003 12:43:53 -0500 From: Alan Cox Message-Id: <200303241754.h2OHsii27044@devserv.devel.redhat.com> Subject: Re: [IDE SiI680] throughput drop to 1/4 To: andre@linux-ide.org (Andre Hedrick) Date: Mon, 24 Mar 2003 12:54:44 -0500 (EST) Cc: samel@mail.cz (Vitezslav Samel), alan@redhat.com (Alan Cox), linux-kernel@vger.kernel.org In-Reply-To: from "Andre Hedrick" at Mar 24, 2003 09:44:38 AM X-Mailer: ELM [version 2.5 PL6] 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 > There should be a mode or a flag option in the siimage.h to disable MMIO > by default. I am courious if this is a BARRIER on the read/write screwing > the pooch! It cannot be involved. If you read the code you'll see the SII driver doesnt yet override outbsync so it can't be involved. We aren't doing any posting prevention yet