From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759457AbYEIXzd (ORCPT ); Fri, 9 May 2008 19:55:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756638AbYEIXzW (ORCPT ); Fri, 9 May 2008 19:55:22 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:36844 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755953AbYEIXzV (ORCPT ); Fri, 9 May 2008 19:55:21 -0400 Date: Fri, 9 May 2008 16:55:01 -0700 From: Andrew Morton To: Thomas Gleixner Cc: andreas.herrmann3@amd.com, mingo@elte.hu, hpa@zytor.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH] x86: enable hpet=force for AMD SB400 Message-Id: <20080509165501.a0fdb29d.akpm@linux-foundation.org> In-Reply-To: References: <20080509094911.GG5023@alberich.amd.com> <20080509163731.5f851bec.akpm@linux-foundation.org> X-Mailer: Sylpheed version 2.2.4 (GTK+ 2.8.20; i486-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 10 May 2008 01:42:30 +0200 (CEST) Thomas Gleixner wrote: > On Fri, 9 May 2008, Andrew Morton wrote: > > On Fri, 9 May 2008 11:49:11 +0200 > > Andreas Herrmann wrote: > > > > > x86: enable hpet=force for ATI SB400 > > > > Sigh. > > > > > Add quirk to allow forced usage of HPET on ATI SB400. > > > I stumbled over machines where HPET is enabled but not reported > > > by BIOS. > > > > Is there no way in which we can probe for or identify this condition, > > rather than hoping that the user will find out about this boot option? > > I'd love to have a sane solution for that, but looking at the rate of > HPET wreckage since we increased the usage of HPET I'm happy to have > this as an opt in thingy. > Well we don't have to auto-enable the hpet. Simply adding a loud "you should try the hpet=force option" printk would help a lot of people.