From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 20 May 2001 12:59:02 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 20 May 2001 12:58:52 -0400 Received: from isis.its.uow.edu.au ([130.130.68.21]:29901 "EHLO isis.its.uow.edu.au") by vger.kernel.org with ESMTP id ; Sun, 20 May 2001 12:58:41 -0400 Message-ID: <3B07F6B8.4EAB0142@uow.edu.au> Date: Mon, 21 May 2001 02:54:16 +1000 From: Andrew Morton X-Mailer: Mozilla 4.76 [en] (X11; U; Linux 2.4.4-ac9 i686) X-Accept-Language: en MIME-Version: 1.0 To: Andrea Arcangeli CC: Ivan Kokshaysky , Richard Henderson , linux-kernel@vger.kernel.org Subject: Re: alpha iommu fixes In-Reply-To: <20010518214617.A701@jurassic.park.msu.ru> <20010519155502.A16482@athlon.random> <20010519231131.A2840@jurassic.park.msu.ru>, <20010519231131.A2840@jurassic.park.msu.ru>; <20010520044013.A18119@athlon.random> <3B07AF49.5A85205F@uow.edu.au> <20010520154958.E18119@athlon.random>, <20010520154958.E18119@athlon.random>; <20010520181803.I18119@athlon.random> <3B07EEFE.43DDBA5C@uow.edu.au>, <3B07EEFE.43DDBA5C@uow.edu.au>; from andrewm@uow.edu.au on Mon, May 21, 2001 at 02:21:18AM +1000 <20010520184411.K18119@athlon.random> 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 Andrea Arcangeli wrote: > > > I can't find *any* pci_map_single() in the 2.4.4-ac9 tree > > which can fail, BTW. > > I assume you mean that no one single caller of pci_map_single is > checking if it failed or not (because all pci_map_single can fail). No. Most of the pci_map_single() implementations just use virt_to_bus()/virt_to_phys(). Even sparc64's fancy iommu-based pci_map_single() always succeeds.