From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S271183AbTHCUxs (ORCPT ); Sun, 3 Aug 2003 16:53:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S271007AbTHCUxX (ORCPT ); Sun, 3 Aug 2003 16:53:23 -0400 Received: from home.wiggy.net ([213.84.101.140]:60545 "EHLO thunder.home.wiggy.net") by vger.kernel.org with ESMTP id S270855AbTHCUxN (ORCPT ); Sun, 3 Aug 2003 16:53:13 -0400 Date: Sun, 3 Aug 2003 22:52:51 +0200 From: Wichert Akkerman To: bert hubert , Andrew Morton , linux-kernel@vger.kernel.org, devik@cdi.cz Subject: Re: [PATCH] Allow /dev/{,k}mem to be disabled to prevent kernel from being modified easily Message-ID: <20030803205251.GA2225@wiggy.net> Mail-Followup-To: bert hubert , Andrew Morton , linux-kernel@vger.kernel.org, devik@cdi.cz References: <20030803180950.GA11575@outpost.ds9a.nl> <20030803123218.7bb2c16f.akpm@osdl.org> <20030803204515.GA15271@outpost.ds9a.nl> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030803204515.GA15271@outpost.ds9a.nl> User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Previously bert hubert wrote: > problem with sigsegv is that it does not allow legitimate programs to choose > an alternate approach - the log entry would be nice though. Is that likely to happen on the kind of machines on which you will use this option? Also, if your purpose is to prevent userland from meddling with memory you might want to block iopl was well. Wichert. -- Wichert Akkerman It is simple to make things. http://www.wiggy.net/ It is hard to make things simple.