Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753133AbXIRUUm (ORCPT ); Tue, 18 Sep 2007 16:20:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752221AbXIRUUf (ORCPT ); Tue, 18 Sep 2007 16:20:35 -0400 Received: from cantor2.suse.de ([195.135.220.15]:35247 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752555AbXIRUUe (ORCPT ); Tue, 18 Sep 2007 16:20:34 -0400 From: Andi Kleen Organization: SUSE Linux Products GmbH, Nuernberg, GF: Markus Rex, HRB 16746 (AG Nuernberg) To: Charles N Wyble Subject: Re: [PATCH 3/3] Time to make CONFIG_PARAVIRT non-experimental. Date: Tue, 18 Sep 2007 22:20:26 +0200 User-Agent: KMail/1.9.6 Cc: virtualization@lists.linux-foundation.org, Chris Wright , Anthony Liguori , lkml - Kernel Mailing List References: <1189747054.7262.34.camel@localhost.localdomain> <200709181257.41530.ak@suse.de> <46F02F50.5000001@thewybles.com> In-Reply-To: <46F02F50.5000001@thewybles.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200709182220.27311.ak@suse.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 999 Lines: 25 > Why is making something default y a bad idea? > Those most likely to care can turn it off. Is there a harmful effect > from leaving it on if its not being used? Running yes "" | make oldconfig to upgrade kernel configs is standard practice and you definitely don't want to have all kinds of random new unnecessary features be turned on then. Besides paravirt by itself is pretty useless; you need typically quite complex other options set to do any meaningfull virtualization. The only reason to use default y is in options that are not user visible and have a reasonable default or things that cause direct boot failures when upgrading old configurations. That all doesn't apply here. Besides it's bad taste and taste is very important. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/