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Re: [qemu-s390x] [PATCH] s390x: Fix the confusing contributions-after-20

From: Alexander Graf
Subject: Re: [qemu-s390x] [PATCH] s390x: Fix the confusing contributions-after-2012 license statements
Date: Mon, 11 Feb 2019 16:24:48 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0

On 02/06/2019 02:02 PM, Laurent Vivier wrote:
On 06/02/2019 13:58, Cornelia Huck wrote:
On Wed,  6 Feb 2019 13:41:33 +0100
Thomas Huth <address@hidden> wrote:

The license information in these files is rather confusing. The text
declares LGPL first, but then says that contributions after 2012 are
licensed under the GPL instead. How should the average user who just
downloaded the release tarball know which part is now GPL and which
is LGPL?
FWIW, that statement was added in ccb084d3f0ec ("s390: new
contributions GPLv2 or later").

Looking at the text of the LGPL (see COPYING.LIB in the top directory),
the license clearly states how this should be done instead:

"3. You may opt to apply the terms of the ordinary GNU General Public
  License instead of this License to a given copy of the Library. To do
  this, you must alter all the notices that refer to this License, so
  that they refer to the ordinary GNU General Public License, version 2,
  instead of to this License."
Hm. This talks about GPL v2, not GPL v2-or-later...

Thus let's clean up the confusing statements and use the proper GPL
text only.

Signed-off-by: Thomas Huth <address@hidden>
  linux-user/s390x/target_cpu.h | 19 ++++++++-----------
  target/s390x/cpu.c            | 19 ++++++++-----------
  target/s390x/cpu.h            | 19 ++++++++-----------
  target/s390x/kvm.c            | 19 ++++++++-----------
BTW: Is the original author of the code still around?
For the linux-user/s390x/target_cpu.h, it seems this code has been pushed by 
Alex Graf:

commit 10ec51174ca69a4c3c5149b0b3baaa6ccba66273
Author: Alexander Graf <address@hidden>
Date:   Sat Dec 5 12:44:21 2009 +0100

     S/390 CPU fake emulation
Because Qemu currently requires a TCG target to exist and there are quite some
     useful helpers here to lay the groundwork for out KVM target, let's create 
     stub TCG emulation target for S390X CPUs.
This is required to make tcg happy. The emulation target itself won't work
Signed-off-by: Alexander Graf <address@hidden>
     Signed-off-by: Aurelien Jarno <address@hidden>

But the "(c) 2009 Ulrich Hecht" is confusing.

Why? Ulrich was the one that started the port, I then cleaned it up, improved it, added system emulation and upstreamed it.

What problem exactly are you trying to solve?


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