linux-kernel - Re: [PATCH] LICENSES: add CC0-1.0 license text

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Message-ID: <2025052118-handbook-dowry-bae9@gregkh>
Date: Wed, 21 May 2025 14:54:30 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Lukas Bulwahn <lbulwahn@...hat.com>
Cc: Thomas Gleixner <tglx@...utronix.de>, linux-spdx@...r.kernel.org,
	kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org,
	Lukas Bulwahn <lukas.bulwahn@...hat.com>
Subject: Re: [PATCH] LICENSES: add CC0-1.0 license text

On Tue, May 13, 2025 at 01:59:12PM +0200, Lukas Bulwahn wrote:
> From: Lukas Bulwahn <lukas.bulwahn@...hat.com>
> 
> Commit cbbd847d107f ("tools/x86/kcpuid: Introduce a complete cpuid
> bitfields CSV file") turns the tools/arch/x86/kcpuid/cpuid.csv to be an
> auto-generated file from an input file maintained at x86-cpuid.org project.
> The x86-cpuid.org project clearly states that the auto-generated file is to
> be licensed with CC0-1.0 (see Link below). So, the SPDX-License-Identifier
> CC0-1.0 in the file is correct as intended.
> 
> The spdxcheck.py script reports that tools/arch/x86/kcpuid/cpuid.csv uses
> an Invalid License ID: CC0-1.0, though, as the LICENSES directory in the
> kernel tree does not contain a file with license information for CC0-1.0.
> 
> Add a suitable CC0-1.0 file with the license text into LICENSES/deprecated
> to make spdxcheck.py happy.
> 
> The directory deprecated is the best fit, by exclusion of the
> alternatives. CC0-1.0 should not be considered among the preferred licenses
> in the kernel, nor is it a license exception case or intended for
> dual-licensing some copyrighted material. So, deprecated is the best fit
> here, even if the license and its use is fine and it does not suggest to
> actually deprecate use of this license.
> 
> The license text for the CC0-1.0 file was obtained from the spdx
> license-list-data git repository (see Link below).
> 
> Link: https://gitlab.com/x86-cpuid.org/x86-cpuid-db/-/blob/v2.4/LICENSE.rst
> Link: https://github.com/spdx/license-list-data/blob/main/text/CC0-1.0.txt
> 
> Signed-off-by: Lukas Bulwahn <lukas.bulwahn@...hat.com>
> ---
>  LICENSES/deprecated/CC0-1.0 | 129 ++++++++++++++++++++++++++++++++++++
>  1 file changed, 129 insertions(+)

Thanks for this, I'll add it to the spdx tree now.

greg k-h