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 13:16:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 20 May 2001 13:16:44 -0400 Received: from panic.ohr.gatech.edu ([130.207.47.194]:41651 "HELO havoc.gtf.org") by vger.kernel.org with SMTP id ; Sun, 20 May 2001 13:16:31 -0400 Message-ID: <3B07FBE9.1176D9DC@mandrakesoft.com> Date: Sun, 20 May 2001 13:16:25 -0400 From: Jeff Garzik Organization: MandrakeSoft X-Mailer: Mozilla 4.77 [en] (X11; U; Linux 2.4.5-pre4 i686) X-Accept-Language: en MIME-Version: 1.0 To: Andrea Arcangeli Cc: Andrew Morton , 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> <20010520181803.I18119@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: > > On Sun, May 20, 2001 at 03:49:58PM +0200, Andrea Arcangeli wrote: > > they returned zero. You either have to drop the skb or to try again later > > if they returns zero. > > BTW, pci_map_single is not a nice interface, it cannot return bus > address 0, who says? A value of zero for the mapping is certainly an acceptable value, and it should be handled by drivers. In fact its an open bug in a couple net drivers that they check the mapping to see if it is non-zero... -- Jeff Garzik | "Do you have to make light of everything?!" Building 1024 | "I'm extremely serious about nailing your MandrakeSoft | step-daughter, but other than that, yes."