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Re: [PATCH 2/3] xen/ppc: Implement early serial printk on PaPR/pseries
- To: Julien Grall <julien@xxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Fri, 9 Jun 2023 10:54:05 +0100
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- Cc: tpearson@xxxxxxxxxxxxxxxxxxxxx, George Dunlap <george.dunlap@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Shawn Anastasio <shawnanastasio@xxxxxxxxxxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, Shawn Anastasio <shawn@xxxxxxxxxx>
- Delivery-date: Fri, 09 Jun 2023 09:54:40 +0000
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 09/06/2023 10:46 am, Julien Grall wrote:
> On 09/06/2023 10:43, Andrew Cooper wrote:
>> On 09/06/2023 10:38 am, Jan Beulich wrote:
>>> On 09.06.2023 11:29, Andrew Cooper wrote:
>>>> On 09/06/2023 10:22 am, Jan Beulich wrote:
>>>>>> --- /dev/null
>>>>>> +++ b/xen/arch/ppc/boot_of.c
>>>>>> @@ -0,0 +1,122 @@
>>>>>> +/* SPDX-License-Identifier: GPL-2.0-or-later */
>>>>> By default we mean to use ...
>>>>>
>>>>>> --- /dev/null
>>>>>> +++ b/xen/arch/ppc/early_printk.c
>>>>>> @@ -0,0 +1,36 @@
>>>>>> +/* SPDX-License-Identifier: GPL-2.0 */
>>>>> ... the more modern form of this (GPL-2.0-only). Anything
>>>>> deviating from
>>>>> that may want justifying in the description.
>>>> GPL-2.0-or-later is fine.
>>> Hmm, I was merely following
>>> https://lists.xen.org/archives/html/xen-devel/2023-06/msg00415.html.
>>> The text at the top of ./COPYING looks to suggest -only, and I'm
>>> unaware of any other place where our default is actually written down.
>>
>> The license is chosen by the submitter/copyright holder, based on their
>> preferences/wishes.
>>
>> It's fine for Xen to say "if you've got no vested interest, we recommend
>> GPL-2.0-only", but that is strictly a recommendation and no more.
>>
>> If the submitter chooses GPL-2.0-or-later, that is their prerogative.
>> We have plenty of GPL-2.0-or-later code in Xen.
>
> From my past experience, the submitters tend to just copy the license
> from an existing file in Xen rather than explicitly choosing it. So I
> think it is fair to ask the question because our original and default
> license is GPLv2 nor GPLv2+.
Did you read the bit in the cover letter about part of this code being
derived from the out-of-tree port years ago?
You're blindly assuming that there is even a choice of license available
to be used.
The submitter chooses the license to use. You can request that they
justify it, but you cannot demand that they change it.
~Andrew
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