Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262185AbTERUEb (ORCPT ); Sun, 18 May 2003 16:04:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262191AbTERUEb (ORCPT ); Sun, 18 May 2003 16:04:31 -0400 Received: from palrel13.hp.com ([156.153.255.238]:13707 "EHLO palrel13.hp.com") by vger.kernel.org with ESMTP id S262185AbTERUEa (ORCPT ); Sun, 18 May 2003 16:04:30 -0400 Date: Sun, 18 May 2003 13:17:18 -0700 From: Grant Grundler To: James Bottomley Cc: Arjan van de Ven , "David S. Miller" , Jes Sorensen , torvalds@transmeta.com, cngam@sgi.com, jeremy@sgi.com, Linux Kernel , linux-ia64@linuxia64.org, wildos@sgi.com Subject: Re: [Linux-ia64] Re: [patch] support 64 bit pci_alloc_consistent Message-ID: <20030518201718.GB13855@cup.hp.com> References: <16071.1892.811622.257847@trained-monkey.org> <1053250142.1300.8.camel@laptop.fenrus.com> <20030518.023533.98888328.davem@redhat.com> <20030518094341.A1709@devserv.devel.redhat.com> <20030518172203.GA13855@cup.hp.com> <1053280195.10810.61.camel@mulgrave> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1053280195.10810.61.camel@mulgrave> User-Agent: Mutt/1.5.3i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1025 Lines: 22 On Sun, May 18, 2003 at 12:49:49PM -0500, James Bottomley wrote: > In that case, the platform returns zero to "this much" being less than > the full 64 bits implying there's no mask the platform and driver can > agree on. My point was it's better if the driver always check the return value regardless of which interface is ultimately agreed upon. (in reference to whether "no one cares a flying fish".) If one accepts that requirement, the only improvement in Arjen's proposal is the platform DMA support can guess what might be better and make that the "effective" mask. The driver still needs to check the effective mask. I happen to agree with davem : redefining this interface in 2.5 for a trivial improvement doesn't seem reasonable at this point. a swimming fish, grant - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/