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[97.113.7.119]) by smtp.gmail.com with ESMTPSA id z23sm13533708pgu.16.2019.10.21.08.52.31 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 21 Oct 2019 08:52:31 -0700 (PDT) Subject: Re: [PATCH] tcg/LICENSE: Remove no-longer-true statement that TCG is BSD-licensed To: Peter Maydell , qemu-devel@nongnu.org References: <20191021145839.12684-1-peter.maydell@linaro.org> From: Richard Henderson Openpgp: preference=signencrypt Message-ID: <06e15851-0b4e-63c3-001d-dd7ea5855872@linaro.org> Date: Mon, 21 Oct 2019 08:52:29 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <20191021145839.12684-1-peter.maydell@linaro.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::641 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paolo Bonzini , Stefan Hajnoczi , Markus Armbruster , Claudio Fontana Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 10/21/19 7:58 AM, 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 don't really consider the tcg > subdirectory to be a distinct part of QEMU anyway. > > Remove the LICENSE file, since claiming false information > about the license of the code is confusing, and update > the main project LICENSE file also to be clearer about > the license used by TCG. > > Signed-off-by: Peter Maydell > --- > This patch takes the simple approach of just documenting > the de-facto current reality; does anybody want to argue > for something else? Other possibilities I guess would be > specifically documenting tcg/aarch64 as an accidental > exception to the general licensing rule for tcg/, or even > trying to get it relicensed. > > Does having tcg/ be BSD-licensed gain the project anything? > From my point of view I don't really see it as a cleanly > separable module of code -- it's quite tightly integrated > with the rest of QEMU, including code in accel/tcg which > is variously GPL or LGPL. I think this is the best solution. I've never been convinced that TCG can usefully be extracted and reused for something else. Reviewed-by: Richard Henderson r~