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=-2.5 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIMWL_WL_HIGH, URIBL_BLOCKED,USER_AGENT_MUTT autolearn=unavailable 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 DE3A9C46460 for ; Sat, 4 May 2019 06:40:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AF7282084A for ; Sat, 4 May 2019 06:40:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1556952046; bh=0Ftj/3PzhwV4/auuONbabTb56xCaipaSaiEBU3GT0Ww=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=Ol1Jjv8BjZHSU8S9Cfy4GOPXBOcjvxR19ELwGKKhfcUsGmJj5SAx0ikqxLGiwjIdR Kk5EW7kJ53eY65dH7YRpEPXfD4TvVwWYo8BgplhvR2jmSdFMs8/Vvhp3VvMYMlkFN8 YHFu7qT22Sa5s4QPJI1wjjCuWSpWKME/pcCCYirs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726516AbfEDGkp (ORCPT ); Sat, 4 May 2019 02:40:45 -0400 Received: from mail.kernel.org ([198.145.29.99]:57640 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725808AbfEDGkp (ORCPT ); Sat, 4 May 2019 02:40:45 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (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 59C0420675; Sat, 4 May 2019 06:40:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1556952043; bh=0Ftj/3PzhwV4/auuONbabTb56xCaipaSaiEBU3GT0Ww=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=1XC+EywlhZEUrQ5rCeT1HuWtfedf999QLIBYexcBC+WZlwj2k9RKcYB7DCbVsYutE E11X9CgGo/TQHcFOPnQDyh7Z+7ur4qbUm9ZSmIGtjCMm2QEG91ZiZ2ibv9CV4uS3AY OEQPREOquHyd1HDjV1y9lFcDO292VgIoZSJNIW5U= Date: Sat, 4 May 2019 08:40:41 +0200 From: Greg KH To: Sebastian Gottschall Cc: Ingo Molnar , Jiri Kosina , Sebastian Andrzej Siewior , Andy Lutomirski , LKML , Rik van Riel , "H. Peter Anvin" , "Jason A. Donenfeld" , Ard Biesheuvel , Dave Hansen , Ingo Molnar , Nicolai Stange , Paolo Bonzini , Radim =?utf-8?B?S3LEjW3DocWZ?= , Thomas Gleixner , x86@kernel.org, stable@vger.kernel.org, Jiri Kosina Subject: Re: [PATCH] x86/fpu: Remove the _GPL from the kernel_fpu_begin/end() export Message-ID: <20190504064041.GB26311@kroah.com> References: <761345df6285930339aced868ebf8ec459091383.1556807897.git.luto@kernel.org> <20190502154043.gfv4iplcvzjz3mc6@linutronix.de> <20190504004747.GA107909@gmail.com> <2238f6ed-9338-903c-760c-6200e73b1599@newmedia-net.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2238f6ed-9338-903c-760c-6200e73b1599@newmedia-net.de> User-Agent: Mutt/1.11.4 (2019-03-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, May 04, 2019 at 04:28:17AM +0200, Sebastian Gottschall wrote: > > Am 04.05.2019 um 02:47 schrieb Ingo Molnar: > > * Jiri Kosina wrote: > > > > > On Thu, 2 May 2019, Sebastian Andrzej Siewior wrote: > > > > > > > Please don't start this. We have everything _GPL that is used for FPU > > > > related code and only a few functions are exported because KVM needs it. > > > That's not completely true. There are a lot of static inlines out there, > > > which basically made it possible for external modules to use FPU (in some > > > way) when they had kernel_fpu_[begin|end]() available. > > > > > > I personally don't care about ZFS a tiny little bit; but in general, the > > > current situation with _GPL and non-_GPL exports is simply not nice. It's > > > not really about licensing (despite the name), it's about 'internal vs > > > external', which noone is probably able to define properly. > > But that's exactly what licensing *IS* about: the argument is that > > 'internal' interfaces are clear proof that the binary module is actually > > a derived work of the kernel. > Using fpu code in kernel space in a kernel module is a derived work of the > kernel itself? > dont get me wrong, but this is absurd. i mean you limit the use of cpu > instructions. the use > of cpu instructions should be free of any licensing issue. i would even > argument you are violating > the license of the cpu ower given to the kernel by executing it, by > restricting its use for no reason Now you are just being crazy, please go talk to a lawyer about how the GPL actually works. If Andy wants to change the symbol of what he wrote from EXPORT_SYMBOL_GPL() to EXPORT_SYMBOL(), that's fine, it's his option. Any loony discussion about if this is actually a licensing issue or not needs to just go to /dev/null As homework, everyone please go read this: http://softwarefreedom.org/resources/2014/SFLC-Guide_to_GPL_Compliance_2d_ed.pdf and remember that the license of the Linux kernel is GPLv2. Now where's the "kill this thread" option on mutt so I don't have to see any more of this nonsense... greg k-h