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From:   Peter Oskolkov <posk@posk.io>
Date:   Mon, 6 Feb 2023 10:45:20 -0800
Message-ID: <CAFTs51XWLT_XJ0QOo8N36WJgP=5edknz37pvmdw_1=LEc4Zonw@mail.gmail.com>
Subject: Re: Request for contributor approval: Relicensing rseq selftests to MIT
To:     Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc:     Michael Ellerman <mpe@ellerman.id.au>,
        Shuah Khan <shuah@kernel.org>,
        Michael Jeanson <mjeanson@efficios.com>,
        Martin Schwidefsky <schwidefsky@de.ibm.com>,
        Masahiro Yamada <masahiroy@kernel.org>,
        Paul Burton <paulburton@kernel.org>,
        Sabyasachi Gupta <sabyasachi.linux@gmail.com>,
        Vasily Gorbik <gor@linux.ibm.com>,
        Vincent Chen <vincent.chen@sifive.com>,
        Will Deacon <will@kernel.org>,
        Xingxing Su <suxingxing@loongson.cn>,
        linux-kernel <linux-kernel@vger.kernel.org>
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On Mon, Feb 6, 2023 at 10:35 AM Mathieu Desnoyers
<mathieu.desnoyers@efficios.com> wrote:
>
> Hi,
>
> I would like to get contributor approval to relicense the rseq selftests
> within the Linux kernel and the librseq project to MIT. This will make
> it easier to use librseq from statically built applications, and I wish
> to continue sharing code between the kernel rseq selftests and librseq.

I have no issues with this. Let me know if you need anything more formal.

Thanks,
Peter

>
> Allowing use of rseq application headers from statically built
> applications was the intent from the beginning, but it turns out that
> having the rseq.c initialization code under LGPL2.1 makes it harder than
> it should be for users.
>
> The current contributor summary commit-wise under
> tools/testing/selftests/rseq is:
>
>     269  Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
>       6  Michael Ellerman <mpe@ellerman.id.au>
>       5  Shuah Khan <skhan@linuxfoundation.org>
>       3  Michael Jeanson <mjeanson@efficios.com>
>       3  Peter Oskolkov <posk@google.com>
>       2  Martin Schwidefsky <schwidefsky@de.ibm.com>
>       1  Masahiro Yamada <masahiroy@kernel.org>
>       1  Paul Burton <paulburton@kernel.org>
>       1  Sabyasachi Gupta <sabyasachi.linux@gmail.com>
>       1  Vasily Gorbik <gor@linux.ibm.com>
>       1  Vincent Chen <vincent.chen@sifive.com>
>       1  Will Deacon <will@kernel.org>
>       1  Xingxing Su <suxingxing@loongson.cn>
>
> Header files are currently dual-licensed LGPL2.1/MIT, which is
> somewhat redundant with plain MIT.
>
> rseq.c was licensed under LGPL2.1. Relicencing it to MIT will facilitate
> its integration into statically built applications.
>
> In order to facilitate eventual code sharing between tests and the
> library implementation, I would like to relicense the tests from LGPL2.1
> to MIT as well.
>
> Many of the contributions are trivial, but I prefer to kindly ask for
> approval nevertheless.
>
> Thanks,
>
> Mathieu
>
> --
> Mathieu Desnoyers
> EfficiOS Inc.
> https://www.efficios.com