linux-kernel - Re: [PATCH v1 1/8] tools/nolibc: add support for powerpc

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Message-ID: <20230723081520.GA19768@1wt.eu>
Date:   Sun, 23 Jul 2023 10:15:20 +0200
From:   Willy Tarreau <w@....eu>
To:     Thomas Weißschuh <thomas@...ch.de>
Cc:     Zhangjin Wu <falcon@...ylab.org>, arnd@...db.de,
        linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH v1 1/8] tools/nolibc: add support for powerpc

On Sun, Jul 23, 2023 at 09:32:37AM +0200, Thomas Weißschuh wrote:
> On 2023-07-19 05:10:48+0800, Zhangjin Wu wrote:
> > diff --git a/tools/include/nolibc/arch-powerpc.h b/tools/include/nolibc/arch-powerpc.h
> > new file mode 100644
> > index 000000000000..100ec0f412dc
> > --- /dev/null
> > +++ b/tools/include/nolibc/arch-powerpc.h
> > @@ -0,0 +1,156 @@
> > +/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
> > +/*
> > + * PowerPC specific definitions for NOLIBC
> > + * Copyright (C) 2023 Zhangjin Wu <falcon@...ylab.org>
> 
> If it is taken from musl, shouldn't there also be a musl copyright?

In fact it depends. If code was taken there, not only the copyright is
needed, but the license' compatibility must be verified. If, however,
the code was only disassembled to be understood and reimplemented (as
it seems to me), then no code was taken there and it's not needed.

Thanks,
Willy