From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 25D88C35247 for ; Fri, 7 Feb 2020 02:46:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EE4DC222C2 for ; Fri, 7 Feb 2020 02:46:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581043583; bh=ntf3Kc5hS41m31lIgjXbPxliXLs3VtkI057Y9DO7EUY=; h=Date:From:To:Cc:Subject:In-Reply-To:References:List-ID:From; b=n87biFUXIJyKSGV4DjHzz1NhF1vNW9+s7ERuWqHog3ej+hnK5CtnrhmMGrFWrTGtV PEKtM9LlYi3Fa0U0R3gk+wf5k7BUl4d3oJJ3x672Dg9eAmHcP0r7yw9ggG6tJqt9jl dRWtrB2dzpN19HWub84BKeHDszSY7quYw5gwpfhw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727484AbgBGCqW (ORCPT ); Thu, 6 Feb 2020 21:46:22 -0500 Received: from mail.kernel.org ([198.145.29.99]:35920 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726597AbgBGCqW (ORCPT ); Thu, 6 Feb 2020 21:46:22 -0500 Received: from devnote2 (NE2965lan1.rev.em-net.ne.jp [210.141.244.193]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2F00220715; Fri, 7 Feb 2020 02:46:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581043581; bh=ntf3Kc5hS41m31lIgjXbPxliXLs3VtkI057Y9DO7EUY=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=gi5h4qjtIVxIuOXP919qAAXCwx9ekAbIlIO+8KM097GQJi+BN6iO/k3xM4odVxvYT 5Z24psU81FjVoKHdFX+cW4qX4/i2rBUKxsAuRjU6vruVdpYwTvxk9k/n537phuBDWy scPvhA2mNZL7lGQhKOWsA14PwwLkxFBn9z0fz56E= Date: Fri, 7 Feb 2020 11:46:17 +0900 From: Masami Hiramatsu To: Borislav Petkov Cc: Steven Rostedt , linux-kernel@vger.kernel.org, Ingo Molnar , Andrew Morton Subject: Re: [for-next][PATCH 04/26] bootconfig: Add Extra Boot Config support Message-Id: <20200207114617.3bda49673175d3fa33cbe85e@kernel.org> In-Reply-To: <20200206175858.GG9741@zn.tnic> References: <20200114210316.450821675@goodmis.org> <20200114210336.259202220@goodmis.org> <20200206115405.GA22608@zn.tnic> <20200206234100.953b48ecef04f97c112d2e8b@kernel.org> <20200206175858.GG9741@zn.tnic> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.32; x86_64-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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, On Thu, 6 Feb 2020 18:58:58 +0100 Borislav Petkov wrote: > On Thu, Feb 06, 2020 at 11:41:00PM +0900, Masami Hiramatsu wrote: > > Oh, you are not the first person asked that :) > > > > https://lkml.org/lkml/2019/12/9/563 > > > > And yes, I think this is important that will useful for most developers > > and admins. Since the bootconfig already covers kernel and init options, > > this can be a new standard way to pass args to kernel boot. > > Aha, so Steve and you believe this will become the next great thing > after sliced bread. Sorry but I remain sceptical. :) It could change some other things. I recommend developers to use this feature to configure their subsystem easier and admins to configure kernel boot options more readable way. > I would've done it differently: have it default 'n' and once it turns > out that the major distros have enabled it and *actually* use it, *then* > simply remove the config option. Like we usually do with functionality. > Not the other way around. Many distros may not use it unless it is default y. I couldn't find any good example that the feature "default n" turns into "default y". Would you have any example? > In any case, I've disabled it on my machines and will wait for it > missing to come back and bite me. :-P Hmm, what would you afraid of? It is just a small footprint additional feature which never be enabled without "bootconfig" on the kernel cmdline... Thank you, > > -- > Regards/Gruss, > Boris. > > https://people.kernel.org/tglx/notes-about-netiquette -- Masami Hiramatsu