From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755487AbYIHPzl (ORCPT ); Mon, 8 Sep 2008 11:55:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754169AbYIHPzK (ORCPT ); Mon, 8 Sep 2008 11:55:10 -0400 Received: from terminus.zytor.com ([198.137.202.10]:38412 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754041AbYIHPzJ (ORCPT ); Mon, 8 Sep 2008 11:55:09 -0400 Message-ID: <48C54ABD.1050901@zytor.com> Date: Mon, 08 Sep 2008 08:54:37 -0700 From: "H. Peter Anvin" User-Agent: Thunderbird 2.0.0.14 (X11/20080501) MIME-Version: 1.0 To: Andi Kleen CC: Linus Torvalds , linux@sandersweb.net, linux-kernel@vger.kernel.org, the arch/x86 maintainers , Andi Kleen Subject: Re: [BUG] x86 kenel won't boot under Virtual PC References: <200808311422.12525.linux@sandersweb.net> <200809071922.32974.linux@sandersweb.net> <48C48467.40703@zytor.com> <200809072249.17280.linux@sandersweb.net> <48C4A46B.90705@zytor.com> <20080908154535.GL26079@one.firstfloor.org> <48C54839.8050304@zytor.com> <20080908155021.GN26079@one.firstfloor.org> <48C549D6.10002@zytor.com> <20080908155721.GO26079@one.firstfloor.org> In-Reply-To: <20080908155721.GO26079@one.firstfloor.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Andi Kleen wrote: > On Mon, Sep 08, 2008 at 08:50:46AM -0700, H. Peter Anvin wrote: >> Andi Kleen wrote: >>>> The help text is indeed out of date. I did a patch yesterday to, among >>>> other things, update it; I also want to verify that we are disabling all >>>> options that can cause gcc or binutils to generate nopl's; I plan to >>>> push it today. >>> You (or whoever did those changes) likely broke a lot of distribution >>> setups subtly then. Hopefully the changes were worth that. >> Likely broke a lot of distribution setups how? > > Previously they could set CPU x and it would still run on other CPUs > even if that option was not set. If that's not the case anymore then > they will have some unhappy users once they update their kernels. > That was broken long before by the gcc and binutils authors. -hpa