Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 8 Dec 2001 21:36:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 8 Dec 2001 21:36:12 -0500 Received: from mpdr0.detroit.mi.ameritech.net ([206.141.239.206]:9702 "EHLO mailhost.det.ameritech.net") by vger.kernel.org with ESMTP id ; Sat, 8 Dec 2001 21:35:58 -0500 Date: Sat, 8 Dec 2001 21:33:57 -0500 (EST) From: volodya@mindspring.com Reply-To: volodya@mindspring.com To: linux-kernel@vger.kernel.org Subject: DMA failure to pages w/ addr under 64meg Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org What could cause a DMA transfer to a page with physical address below 64mb to fail ? Context: I am using rvmalloc code from bt848 driver in video capture module (km, http://www.sf.net/projects/gatos). The device that does the transfer is AGP videocard (Radeon), transfer from device to main memory. All transfers to pages with physical addresses below fail consistently. thanks ! Vladimir Dergachev - 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/