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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 0C344C433E0 for ; Thu, 28 Jan 2021 14:31:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B701964DDC for ; Thu, 28 Jan 2021 14:31:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231288AbhA1Oav (ORCPT ); Thu, 28 Jan 2021 09:30:51 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43130 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231438AbhA1Oak (ORCPT ); Thu, 28 Jan 2021 09:30:40 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 64CBDC061573; Thu, 28 Jan 2021 06:30:00 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=z72LpoxZZhEjQSjvA+zDb9r+inOH6Yghk71zYmjuIfM=; b=mW54jTGnHMJZipQZTAjofQ/Zd9 RWx8RWtJXHJxneBzMyhqI0uDM6MilsL+YrvUEHbMofDMIP9ZrhJ2xbNtukEuuJVo18pjMAn7101H6 +EZkogGbBcFgwgywJ7UR/kJwu2geeh7ovTpSLqpJgzXsSllZ6xu7iM8jP64H6UVUY8nVoSBYNeYl7 MZhQoQWveSd1+d4a/5fbnSLwam+YvYPcN8kLRIWCjk6Dl8NE3dsf2UFlXx3aruqlNRBxOeePQ0kWx /EHZY0mn1jRO+4mq5eCsGHm6B52HKS8xoz7EMXIPH+g2uYZzzwio5rvU4UCQYBvB8gGHnAcSxHyUa WRTWurOQ==; Received: from hch by casper.infradead.org with local (Exim 4.94 #2 (Red Hat Linux)) id 1l58Iy-008ZAB-1r; Thu, 28 Jan 2021 14:29:52 +0000 Date: Thu, 28 Jan 2021 14:29:52 +0000 From: Christoph Hellwig To: Josh Poimboeuf Cc: Christoph Hellwig , Kees Cook , linux-kernel@vger.kernel.org, Masahiro Yamada , Michal Marek , linux-hardening@vger.kernel.org, linux-kbuild@vger.kernel.org, Peter Zijlstra , Justin Forbes , Ondrej Mosnacek , Greg Kroah-Hartman Subject: Re: [PATCH RFC] gcc-plugins: Handle GCC version mismatch for OOT modules Message-ID: <20210128142952.GA2041496@infradead.org> References: <20210127180215.GA1745339@infradead.org> <20210127183856.moe3p5pxw6bbtunk@treble> <20210127184327.GA1755516@infradead.org> <20210127185113.c3est2vssf5tlyyq@treble> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210127185113.c3est2vssf5tlyyq@treble> X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-hardening@vger.kernel.org On Wed, Jan 27, 2021 at 12:51:13PM -0600, Josh Poimboeuf wrote: > Is this a joke? I've never met anybody who builds OOT modules as a > development aid... I'm pretty sure you've met me before. > On the other hand I know of several very popular distros (some paid, > some not) who rely on allowing users/partners to build OOT modules as > part of their ecosystem. To say it's not supported is a farce. This is not a farce. The kernel only supports infrastructure for the kernel itself, not for any external consumers. If you have a business model that relies on something else you should think hard if you are in the right business.