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Date: Thu, 06 Feb 2014 09:04:23 -0500
From: Christopher Covington <cov@codeaurora.org>
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Subject: Re: [Qemu-devel] [PATCH v3 0/5] disas: add libvixl to support A64
 disassembly
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To: Michael Matz <matz@suse.de>
Cc: Peter Maydell <peter.maydell@linaro.org>, Peter Crosthwaite <peter.crosthwaite@xilinx.com>, Laurent Desnogues <laurent.desnogues@gmail.com>, Patch Tracking <patches@linaro.org>, QEMU Developers <qemu-devel@nongnu.org>, Alexander Graf <agraf@suse.de>, Claudio Fontana <claudio.fontana@linaro.org>, Dirk Mueller <dmueller@suse.de>, Will Newton <will.newton@linaro.org>, Paolo Bonzini <pbonzini@redhat.com>, =?ISO-8859-1?Q?Alex_Benn=E9e?= <alex.bennee@linaro.org>, "kvmarm@lists.cs.columbia.edu" <kvmarm@lists.cs.columbia.edu>, Christoffer Dall <christoffer.dall@linaro.org>, Richard Henderson <rth@twiddle.net>

On 02/06/2014 08:54 AM, Michael Matz wrote:
> Hi,
> 
> On Thu, 6 Feb 2014, Peter Maydell wrote:
> 
>> On 6 February 2014 13:45, Michael Matz <matz@suse.de> wrote:
>>> Hmm, why aren't we simply using the binutils disassembler?  It's also
>>> (C) by ARM, so there shouldn't be any relicensing problems.  And it
>>> does support AdvSIMD and system instructions.
>>
>> It is GPLv3 which is not compatible with GPLv2 which
>> QEMU requires. The contribution process for binutils
>> involves a copyright assignment which means the FSF
>> now have the copyright there, as I understand it.
> 
> The FSF always grants back rights on the contribution to the contributor.  
> ARM could simply double-license their original contribution of the 
> disassembler.

Is dual licensing always possible given a grant-back? What if the contribution
is a derivative of a GPL-3.0 licensed work?

Christopher

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