Re: [PATCH 2/3] xen/ppc: Implement early serial printk on PaPR/pseries

[Julien Grall <julien@xxxxxxx>]

Hi,

On 09/06/2023 10:38, 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.
We had several discussion in the past about using GPLv2+ license in Xen 
(see [1], [2]). It has always been unclear what is the impact on 
contribution with such license. So I think we should stick with GPL-2.0 
for new code unless there is a reason to diverge.
Cheers,

[1] 
https://patchwork.kernel.org/project/xen-devel/patch/1474985810-12289-1-git-send-email-lars.kurth@xxxxxxxxxx/#19650817
[2] 
https://lore.kernel.org/all/alpine.DEB.2.22.394.2208231140140.15247@ubuntu-linux-20-04-desktop/
--
Julien Grall