From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754148Ab2C1HVJ (ORCPT ); Wed, 28 Mar 2012 03:21:09 -0400 Received: from terminus.zytor.com ([198.137.202.10]:50689 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751580Ab2C1HVI (ORCPT ); Wed, 28 Mar 2012 03:21:08 -0400 Message-ID: <4F72BBCE.1060307@zytor.com> Date: Wed, 28 Mar 2012 00:20:46 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.1) Gecko/20120209 Thunderbird/10.0.1 MIME-Version: 1.0 To: Ingo Molnar CC: Josh Boyer , Andrew Morton , Stephen Hemminger , Len Brown , linux-kernel@vger.kernel.org, Alan Cox , Ingo Molnar Subject: Re: [PATCH] floppy: revert floppy disable halt warning References: <20120311093853.04f049c2@s6510.linuxnetplumber.net> <20120327162633.654c8d7e.akpm@linux-foundation.org> <20120328064008.GA12735@gmail.com> In-Reply-To: <20120328064008.GA12735@gmail.com> X-Enigmail-Version: 1.3.5 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/27/2012 11:40 PM, Ingo Molnar wrote: > > No objections from me. > > Please resubmit against latest -tip, we unified the idle > routines which likely interacts with that patch. > To the best of my knowledge, no-hlt only existed because of flaky power distributions on 386/486 systems which were sold to run DOS. Since DOS did no power management of any kind, including HLT, the power draw was fairly uniform; when exposed to the much higher noise levels you got when Linux used HLT caused some of these systems to fail. They were by far in the minority even back then. -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.