Re: [Qemu-devel] [PATCH QEMU v1 0/4] multiboot: bss_end_addr can be zero / cleanup

[Daniel P. Berrange]

On Thu, Jan 18, 2018 at 12:35:00PM +0100, Kevin Wolf wrote:
> Am 17.01.2018 um 21:06 hat Jack Schwartz geschrieben:
> > Before I proceed with adding my multiboot test file, I'll clarify here that
> > I started with a version from the grub2 tree.  In that file I expanded a
> > header file, also from the same tree.  Neither file had any license header,
> > though the tree I got them from (Dated October 2017) contains the GNU GPLv3
> > license file.
> 
> I see. QEMU as a whole is GPLv2, so this might be a problem. It's
> probably not as bad as merging GPLv3 code into QEMU proper because it's
> a standalone test kernel that I suppose could have a different license.
> But IANAL and maybe it's safer not to go there.

As long as the GPLv3 code is not linked / otherwise combined with any
of the GPLv2 code in QEMU that will be ok. Since it is a self-contained
test kernel, that would not be an issue in this case - it only interfaces
to QEMU via the x86 machine ABI.

It just means that the QEMU source tar.gz will be under a conjunction
of licenses  "GPLv2 and GPLv2+ and GPLv3 and ...all our other licenss..."

The resulting binaries for emulators/tools will still be GPLv2 as they're
only linking in the GPLv2 + GPLv2+ source, never linking the GPlv3 test
image.

For simplicity of understanding though, it could be desirable to avoid
this if not an unreasonable amount of extra work

> Maybe it would be less hassle to just reimplement the tests, based on
> the MIT licensed tests that are already in tests/multiboot/.

Regards,
Daniel
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