Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 27 Jan 2003 14:35:56 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 27 Jan 2003 14:35:56 -0500 Received: from nat-pool-rdu.redhat.com ([66.187.233.200]:23839 "EHLO devserv.devel.redhat.com") by vger.kernel.org with ESMTP id ; Mon, 27 Jan 2003 14:35:55 -0500 From: Alan Cox Message-Id: <200301271945.h0RJj7B26739@devserv.devel.redhat.com> Subject: Re: 2.4.21-pre3 kernel crash To: benh@kernel.crashing.org (Benjamin Herrenschmidt) Date: Mon, 27 Jan 2003 14:45:07 -0500 (EST) Cc: rossb@google.com (Ross Biro), linux-kernel@vger.kernel.org, alan@redhat.com In-Reply-To: <1043694192.2756.55.camel@zion.wanadoo.fr> from "Benjamin Herrenschmidt" at Jan 27, 2003 08:03:13 PM 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 > On Mon, 2003-01-27 at 17:53, Ross Biro wrote: > > This looks like the same problem I ran into with IDE and highmem not > > getting along. Try compiling your kernel with out highmem enabled and > > see what happenes. > > Indeed, looking at the code, it seems ide_build_sglist() doesn't worry > much about highmem, just picks bh->b_data, assume it's a virtual > address, and gives that to pci_map_sg(). I beleive, at least for highmem > pages, it should rather pick bh->b_page and bh_offset(bh) > > I can hack something, maybe tonight, but I can't test HIGHMEM for a while > here. Interestingly, I had no problem report on PPC from users using IDE > with highmem though. I don't see how 2.4 IDE would be getting highmem pages. 2.5 IDE does handle this and does need to - 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/