From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759019AbXJDJDs (ORCPT ); Thu, 4 Oct 2007 05:03:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752509AbXJDJDl (ORCPT ); Thu, 4 Oct 2007 05:03:41 -0400 Received: from ns.suse.de ([195.135.220.2]:40035 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753939AbXJDJDk (ORCPT ); Thu, 4 Oct 2007 05:03:40 -0400 From: Andi Kleen To: Chuck Ebbert Subject: Re: [PATCH] Document x86-64 iommu kernel parameters Date: Thu, 4 Oct 2007 11:01:46 +0200 User-Agent: KMail/1.9.1 Cc: "H. Peter Anvin" , Randy Dunlap , Jeff Garzik , LKML , Andrew Morton References: <20071003013413.GA17717@havoc.gtf.org> <4703161E.8040603@zytor.com> <4703CA28.9010609@redhat.com> In-Reply-To: <4703CA28.9010609@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200710041101.46794.ak@suse.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wednesday 03 October 2007 18:58, Chuck Ebbert wrote: > On 10/03/2007 12:10 AM, H. Peter Anvin wrote: > > Randy Dunlap wrote: > >> Maybe we can/should merge the doc files along with the x86 arch merge. > > > > Well, the x86 merge is pretty much mechanical. It should be followed up > > with a lot of manual merging. > > It would be really nice if identical kernel parameters used the same names, > so people didn't waste their time trying e.g. "nolapic_timer" on x86_64 > because that option fixed their problems on i386 (it's "noapictimer" in > x86_64.) Well the x86-64 option was there first; you have to ask whoever added the i386 option why they used a different name But I normally added aliases as people reported them. Nobody did in this case. One reason is probably that noapictimer is not very useful on x86-64 -- the nolapic_timer is really more a workaround that only started making sense on HRT because it made "apicmaintimer" default. On current x86-64 which doesn't do that there is very little reason to use it and you'll usually just break things. So I guess the real reason is that they're not actually identical when you look closely. -Andi