From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 2 May 2001 12:42:01 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 2 May 2001 12:41:51 -0400 Received: from mnh-1-16.mv.com ([207.22.10.48]:12551 "EHLO ccure.karaya.com") by vger.kernel.org with ESMTP id ; Wed, 2 May 2001 12:41:38 -0400 Message-Id: <200105021754.MAA02910@ccure.karaya.com> X-Mailer: exmh version 2.0.2 To: Ingo Oeser Cc: linux-kernel@vger.kernel.org Subject: Re: Linux Kernel Debuggers, KDB or KGDB? In-Reply-To: Your message of "Wed, 02 May 2001 16:44:51 +0200." <20010502164451.L706@nightmaster.csn.tu-chemnitz.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Wed, 02 May 2001 12:54:42 -0500 From: Jeff Dike Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org ingo.oeser@informatik.tu-chemnitz.de said: > Everything is there. SCSI and ISDN have the equivalent devices of the > "lo" driver for the networking layer. Or the equivalent of tun/tap > devices for the ethernet layer. Is this sufficient to do driver development? TUN/TAP doesn't let me write ethernet drivers inside UML. > It just have to be an config.in option in UML and every other adapters > switched off. This is a matter of fiddling the config process. It might not be easy, but there isn't much doubt that it's possible :-) > The problem is: I still do not really get how UML really works. Many > of the mapping rules (Kernel machanism on normal arch -> UML) are not > quite clear to me. > Is there a paper or sth. like that describing the design a bit more in > detail? I only found usage papers on the user-mode-linux home page. First, have a look at the USB patch at http://user-mode-linux.sourceforge.net/p atches/uml-hcd-2.4.3.patch My ALS paper has a description of how UML basically works inside and it's not too much out of date - http://user-mode-linux.sourceforge.net/als2000/index.htm l Also, my ALS and LCA slides have this sort of information - http://user-mode-linux.sourceforge.net/slides/als2000/slides.html http://user-mode-linux.sourceforge.net/slides/lca2001/lca.html The LCA slides are probably better. They are from a few months later, and I had a longer slot, so I needed more slides. If you have questions which aren't answered on my site, send me mail. Jeff