Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751257AbWEQMQj (ORCPT ); Wed, 17 May 2006 08:16:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750896AbWEQMQj (ORCPT ); Wed, 17 May 2006 08:16:39 -0400 Received: from fw5.argo.co.il ([194.90.79.130]:45584 "EHLO argo2k.argo.co.il") by vger.kernel.org with ESMTP id S1751257AbWEQMQi (ORCPT ); Wed, 17 May 2006 08:16:38 -0400 Message-ID: <446B141B.7050506@argo.co.il> Date: Wed, 17 May 2006 15:16:27 +0300 From: Avi Kivity User-Agent: Thunderbird 1.5.0.2 (X11/20060501) MIME-Version: 1.0 To: Joerg Pommnitz CC: Linux kernel Subject: Re: Wiretapping Linux? References: <20060517120205.68976.qmail@web51406.mail.yahoo.com> In-Reply-To: <20060517120205.68976.qmail@web51406.mail.yahoo.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 17 May 2006 12:16:34.0977 (UTC) FILETIME=[BD599110:01C679AB] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 854 Lines: 20 Joerg Pommnitz wrote: > Additionally its listening on the system bus. Question: Can it tap into > data addressed to another peripheral (say the hd controller)? If so, then > only the system RAM is outside its scope. > A pci device can read system RAM and other memory-mapped PCI devices (such as display framebuffers) using DMA. In addition, a pci (but not pci-express) device can snoop on pci bus traffic to other devices. Typically, however, hard drive controllers will be integrated into the chipset so the data is not on the bus. -- error compiling committee.c: too many arguments to function - 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/