Re: [PATCH v2 0/4] tcg/LICENSE: Remove no-longer-true statement that TCG is BSD-licensed

[Richard Henderson <richard.henderson@linaro.org>]

On 10/25/19 5:58 PM, Peter Maydell wrote:
> Since 2008 the tcg/LICENSE file has not changed: it claims that
> everything under tcg/ is BSD-licensed.
> 
> This is not true and hasn't been true for years: in 2013 we
> accepted the tcg/aarch64 target code under a GPLv2-or-later
> license statement. We also have generic vector optimisation
> code under the LGPL2.1-or-later, and the TCI backend is
> GPLv2-or-later. Further, many of the files are not BSD
> licensed but MIT licensed.
> 
> We don't really consider the tcg subdirectory to be a distinct
> part of QEMU anyway.
> 
> This patchset adds explicit licensing/copyright comments to
> the three files which were missing them, removes the
> inaccurate tcg/LICENSE file, and updates the top-level
> LICENSE file to be more accurate about the current state
> of the licenses used in the code in tcg/.
> 
> If we want a policy that tcg/ code has a restricted
> permitted set of licenses, then we really need to have
> this enforced by checkpatch -- history demonstrates that
> just writing it in tcg/LICENSE does not prevent code under
> other licenses getting in. In the v1 email thread nobody
> seemed to be very strongly arguing for this, though, and
> at this point we would need to make an active effort to
> track down contributors and get relicensing statements.
> If anybody wants to push that effort now would be a good
> time to volunteer :-)
> 
> Note on the licensing for the tcg-target.opc.h files:
>  * I've used the same license as the rest of the relevant
>    backend, which is to say GPL2-or-later for tcg/aarch64
>    and MIT for tcg/i386 and tcg/ppc.
>  * In all 3 cases, the only people who've made contributions
>    to the files are Richard Henderson and (for aarch64) Alex Bennée
> 
> Richard, Alex -- an acked-by for the relevant patches would
> be nice (or if you intended a different license for the
> contributions than I have assumed please say so!)
> 
> v1->v2 changes:
>  * note the presence of MIT licensed code as well
>  * 3 new patches adding copyright/licensing to files
>    that were missing it
> 
> thanks
> -- PMM
> 
> Peter Maydell (4):
>   tcg/aarch64/tcg-target.opc.h: Add copyright/license
>   tcg/i386/tcg-target.opc.h: Add copyright/license
>   tcg/ppc/tcg-target.opc.h: Add copyright/license
>   tcg/LICENSE: Remove out of date claim about TCG subdirectory licensing

Queued.


r~