From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762616AbYAaOlx (ORCPT ); Thu, 31 Jan 2008 09:41:53 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754932AbYAaOlp (ORCPT ); Thu, 31 Jan 2008 09:41:45 -0500 Received: from pentafluge.infradead.org ([213.146.154.40]:40565 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754513AbYAaOlp (ORCPT ); Thu, 31 Jan 2008 09:41:45 -0500 Date: Thu, 31 Jan 2008 06:41:28 -0800 From: Arjan van de Ven To: devzero@web.de Cc: linux-kernel@vger.kernel.org Subject: Re: [PATCH] x86: introduce /dev/mem restrictions with a config option Message-ID: <20080131064128.58c516da@laptopd505.fenrus.org> In-Reply-To: <137932353@web.de> References: <137932353@web.de> Organization: Intel X-Mailer: Claws Mail 3.2.0 (GTK+ 2.12.3; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 31 Jan 2008 15:04:28 +0100 devzero@web.de wrote: > nice ! > > did you think about some boot-time param , e.g. "insecure-devmem" or > something like that? > > recompiling kernel is time consuming..... given that this has been in fedora/rhel for 5 years with no complaints... it's extremely rare, and if you are someone who's going to use it to do some weird form of kernel debugging, you already know that way ahead of time, when you compile your kernel. (Note: I don't know of any tools that do kernel debugging this way. At all)