From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759757AbYEIXnA (ORCPT ); Fri, 9 May 2008 19:43:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756638AbYEIXmw (ORCPT ); Fri, 9 May 2008 19:42:52 -0400 Received: from www.tglx.de ([62.245.132.106]:56931 "EHLO www.tglx.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755639AbYEIXmv (ORCPT ); Fri, 9 May 2008 19:42:51 -0400 Date: Sat, 10 May 2008 01:42:30 +0200 (CEST) From: Thomas Gleixner To: Andrew Morton cc: Andreas Herrmann , mingo@elte.hu, hpa@zytor.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH] x86: enable hpet=force for AMD SB400 In-Reply-To: <20080509163731.5f851bec.akpm@linux-foundation.org> Message-ID: References: <20080509094911.GG5023@alberich.amd.com> <20080509163731.5f851bec.akpm@linux-foundation.org> User-Agent: Alpine 1.10 (LFD 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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. Thanks, tglx