linux-kernel - Re: Request for contributor approval: Relicensing rseq selftests to MIT

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Message-ID: <f56c744f-8704-7fba-bc07-96f0b3ee03da@efficios.com>
Date:   Mon, 6 Feb 2023 14:17:57 -0500
From:   Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Shuah Khan <shuah@...nel.org>,
        Michael Jeanson <mjeanson@...icios.com>,
        Peter Oskolkov <posk@...k.io>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Paul Burton <paulburton@...nel.org>,
        Sabyasachi Gupta <sabyasachi.linux@...il.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Vincent Chen <vincent.chen@...ive.com>,
        Will Deacon <will@...nel.org>,
        Xingxing Su <suxingxing@...ngson.cn>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>
Subject: Re: Request for contributor approval: Relicensing rseq selftests to
 MIT

On 2023-02-06 13:58, Mathieu Desnoyers wrote:
> On 2023-02-06 13:36, Mathieu Desnoyers 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.
>>
>> 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@...icios.com>
>>       6  Michael Ellerman <mpe@...erman.id.au>
>>       5  Shuah Khan <skhan@...uxfoundation.org>
>>       3  Michael Jeanson <mjeanson@...icios.com>
>>       3  Peter Oskolkov <posk@...gle.com>
>>       2  Martin Schwidefsky <schwidefsky@...ibm.com>
> 
> I am having issues reaching Martin Schwidefsky. In this case it's a 
> one-liner
> contribution to a header which is going from LGPL2.1 OR MIT to MIT, 
> which is
> fine because it just removes one of the pre-allowed licenses, thus removing
> some redundancy.
> 
> [ CCing Heiko Carstens ]

Trying with another email address for Heiko Carstens. Adding other s390 
maintainers as well.

Thanks,

Mathieu

> 
> Rerefence:
> 
> commit 3d4d1f05bc990f240d66b0ffaf7121397e14df19
> Author: Martin Schwidefsky <schwidefsky@...ibm.com>
> Date:   Mon Apr 29 11:27:58 2019 -0400
> 
>      rseq/selftests: s390: use trap4 for RSEQ_SIG
>      Use trap4 as the guard instruction for the restartable sequence abort
>      handler.
>      Signed-off-by: Martin Schwidefsky <schwidefsky@...ibm.com>
>      Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
>      Signed-off-by: Shuah Khan <skhan@...uxfoundation.org>
> 
> Thanks,
> 
> Mathieu
> 
>>       1  Masahiro Yamada <masahiroy@...nel.org>
>>       1  Paul Burton <paulburton@...nel.org>
>>       1  Sabyasachi Gupta <sabyasachi.linux@...il.com>
>>       1  Vasily Gorbik <gor@...ux.ibm.com>
>>       1  Vincent Chen <vincent.chen@...ive.com>
>>       1  Will Deacon <will@...nel.org>
>>       1  Xingxing Su <suxingxing@...ngson.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