Message-ID: <58cc7e6d19628757d6d8dc192d07876288f6077e.camel@xry111.site>
Subject: Re: [PATCH] LoongArch: Provide kernel fpu functions
From:   Xi Ruoyao <xry111@xry111.site>
To:     Huacai Chen <chenhuacai@kernel.org>,
        WANG Xuerui <kernel@xen0n.name>
Cc:     Huacai Chen <chenhuacai@loongson.cn>,
        Arnd Bergmann <arnd@arndb.de>, loongarch@lists.linux.dev,
        linux-arch@vger.kernel.org, Xuefeng Li <lixuefeng@loongson.cn>,
        Guo Ren <guoren@kernel.org>,
        Jiaxun Yang <jiaxun.yang@flygoat.com>,
        linux-kernel@vger.kernel.org, loongson-kernel@lists.loongnix.cn
Date:   Sun, 05 Mar 2023 21:28:27 +0800
In-Reply-To: <CAAhV-H55QUrkYYR1Lbj=zbquiz3frX2dNAH23fAuN6eCOUddNA@mail.gmail.com>
References: <20230305052818.4030447-1-chenhuacai@loongson.cn>
         <48f508aa-ab40-7032-a68d-90d8986afb2f@xen0n.name>
         <CAAhV-H55QUrkYYR1Lbj=zbquiz3frX2dNAH23fAuN6eCOUddNA@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
User-Agent: Evolution 3.46.4 
MIME-Version: 1.0
Precedence: bulk

On Sun, 2023-03-05 at 20:18 +0800, Huacai Chen wrote:
> > Might be good to provide some explanation in the commit message as to
> > why the pair of helpers should be GPL-only. Do they touch state buried
> > deep enough to make any downstream user a "derivative work"? Or are the
> > annotation inspired by arch/x86?
> Yes, just inspired by arch/x86, and I don't think these symbols should
> be used by non-GPL modules.

Hmm, what if one of your partners wish to provide a proprietary GPU
driver using the FPU like this way?  As a FLOSS developer I'd say "don't
do that, make your driver GPL".  But for Loongson there may be a
commercial issue.
--=20
Xi Ruoyao <xry111@xry111.site>
School of Aerospace Science and Technology, Xidian University