Re: [Qemu-devel] GPLv3 troubles

[Anthony Liguori]

On 10/18/2011 10:19 AM, Peter Maydell wrote:
> On 18 October 2011 14:03, Anthony Liguori<address@hidden>  wrote:
> > Okay, let's get serious about it.  I set up the following wiki page for
> > coordination:
> >
> > http://wiki.qemu.org/Relicensing
>
> This says:
> use the following git command to get a list of authors:
>
> git log --format:"%an<%ae>" -- file.c
>
> which (apart from having a typo) only lists the people who were
> the git commit authors. This isn't the same as everybody who might
> have copyright on the change. There are certainly commits in the
> omap support which have gone through several people (listed in
> the Signed-off-by: lines) who all have copyright-authorship even
> if they're not git-commit-authors.

Sure, but the Author shouldn't Signed-off-by on a copyright change if there are 
other copyright owners that also need to approve.  SoB is stating that you are 
entitled to submit the patch which in case of copyright change means you own the 
copyright or got permission from the copyright owner.

That's why we should have all authors include a SoB.  It provides the paper 
trail of anyone who may have touched the file.

Regards,

Anthony Liguori

> -- PMM