From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754971AbXHBJy3 (ORCPT ); Thu, 2 Aug 2007 05:54:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752712AbXHBJyS (ORCPT ); Thu, 2 Aug 2007 05:54:18 -0400 Received: from mx2.suse.de ([195.135.220.15]:52780 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752372AbXHBJyR (ORCPT ); Thu, 2 Aug 2007 05:54:17 -0400 To: Andrew Morton Cc: Knut Petersen , linux-kernel@vger.kernel.org, trenn@suse.de, pavel@ucw.cz, mjg59@srcf.ucam.org, lenb@kernel.org Subject: Re: 2.6.22 regression: thermal trip points References: <46B1988C.3090302@t-online.de> <20070802015248.45a40717.akpm@linux-foundation.org> From: Andi Kleen Date: 02 Aug 2007 12:48:49 +0200 In-Reply-To: <20070802015248.45a40717.akpm@linux-foundation.org> Message-ID: User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3 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 Andrew Morton writes: > I didn't understand the arguments either, actually. The issue is that you can actually kill hardware by setting this wrong. We've had such cases where trip point problems eventually lead to overheated laptops with hard disks dying etc. Also it runs the system out of spec and is similar to overclocking which we also do not support. > Here we had obviously-useful-to-you functionality which was taken away > without, afaik, providing any alternative. I don't think it's that unreasonable to require source code modifications for anything that can kill hardware. At least that raises the barrier a bit and hopefully ensures people think twice about it and then really only blame themselves if anything goes wrong. -Andi