Re: [PATCH bpf-next 0/4] Convert filter.txt to RST

From: Daniel Borkmann
Date: Thu Aug 09 2018 - 04:25:05 EST

On 08/09/2018 09:27 AM, Tobin C. Harding wrote:
> On Wed, Aug 08, 2018 at 11:07:35PM -0700, Alexei Starovoitov wrote:
>> On Thu, Aug 09, 2018 at 03:23:24PM +1000, Tobin C. Harding wrote:
>>> Daniel and Alexei, can I please have permission to add GPLv2+ to the BPF
>>> docs?
>> kernel licensing is GPLv2 without +
> According to process/license-rules.rst
> GPL-2.0+ : GNU General Public License v2.0 or later

Not really, please see the first three paragraphs of process/license-rules.rst.
The COPYING file of the kernel says that it's 'v2' and not 'v2 or later',
unless otherwise _explicitly_ noted. Given that and given there is no other
specific note in filter.txt, it would mean it's v2-only due to that rule.

>> every file (including docs) can potentially have a different
>> compatible license, but since they were developed
>> implicitly under v2 only you would need to get a buy-in from
>> all contributors before making such change.
> So if a file does not _explicitly_ state that it is under another
> licence it is ok to add GPLv2?
> thanks,
> Tobin.