Re: [Qemu-devel] TCG plugins and the GPL (was: [PATCH v4 00/54] plugins for TCG)

[Peter Maydell]

On Thu, 12 Sep 2019 at 11:17, Daniel P. Berrangé <address@hidden> wrote:
> I think forcing recompile for each release is reasonable protection
> to make it less atttractive to create license violating closed source
> plugins.

I'm just not sure that a plugin that, for instance, does
"whenever the guest makes a memory access print the address
and data", is in any reasonable sense a derived work of QEMU
that it makes sense to extend the GPL to. We're providing
a convenient introspection interface here, similar to but
different from the way gdbstub lets you introspect guest
binary behaviour, not an arbitrary mechanism for extending
QEMU itself.

thanks
-- PMM