From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756541AbXKTA5d (ORCPT ); Mon, 19 Nov 2007 19:57:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752766AbXKTA5N (ORCPT ); Mon, 19 Nov 2007 19:57:13 -0500 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:54711 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1752515AbXKTA5J (ORCPT ); Mon, 19 Nov 2007 19:57:09 -0500 Date: Mon, 19 Nov 2007 16:57:08 -0800 (PST) Message-Id: <20071119.165708.37213607.davem@davemloft.net> To: benh@kernel.crashing.org Cc: James.Bottomley@HansenPartnership.com, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, rmk@arm.linux.org.uk Subject: Re: SCSI breakage on non-cache coherent architectures From: David Miller In-Reply-To: <1195520101.6970.28.camel@pasglop> References: <1195518864.6970.23.camel@pasglop> <20071119.164611.64664648.davem@davemloft.net> <1195520101.6970.28.camel@pasglop> X-Mailer: Mew version 5.2 on Emacs 22.1 / Mule 5.0 (SAKAKI) 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 From: Benjamin Herrenschmidt Date: Tue, 20 Nov 2007 11:55:01 +1100 > BTW. What is the status nowadays with skb's ? Good question. Some drivers are problematic (or were) because they put DMA descriptor chaining information at the head of the buffer, but those have been fixed either to use alternate descriptor ring facilities or make the proper DMA sync calls.