linux-kernel - Re: Dual licensing [was: [PATCH 2/5] misc: mlx5ctl: Add mlx5ctl misc driver]

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Message-ID: <2023102043-sauciness-encrypt-48c3@gregkh>
Date:   Fri, 20 Oct 2023 22:07:51 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Jonathan Corbet <corbet@....net>
Cc:     Jason Gunthorpe <jgg@...dia.com>,
        Saeed Mahameed <saeed@...nel.org>,
        Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org,
        Leon Romanovsky <leonro@...dia.com>,
        Jiri Pirko <jiri@...dia.com>,
        Saeed Mahameed <saeedm@...dia.com>
Subject: Re: Dual licensing [was: [PATCH 2/5] misc: mlx5ctl: Add mlx5ctl misc
 driver]

On Thu, Oct 19, 2023 at 03:50:30PM -0600, Jonathan Corbet wrote:
> Greg Kroah-Hartman <gregkh@...uxfoundation.org> writes:
> 
> > For your new files, please make them single license.  If you insist on
> > dual licensing them, I will insist on have a lawyer sign off on them so
> > that they understand the issues involved with dual licenses, and just
> > how much I hate them in the kernel tree as they are a pain over time.
> 
> Out of curiosity, is there somewhere people can look for a description
> of these issues and the pain they cause?  I've seen this go by enough
> times to think that it would be good to set down in Documentation/
> somewhere for future reference.

I don't have a description anywhere, sorry, this was just discussions
with many open source lawyers who focus on the kernel over the years.
I'll work to try to get something "solid" from them that I can put into
writing, but it will probably take quite a while...

thanks,

greg k-h