Re: [PATCH] LoongArch: Provide kernel fpu functions

[WANG Xuerui]

On 2023/3/6 20:53, David Laight wrote:
> ...
> > Also, if the old world is taken into consideration (which we normally
> > have the luxury of not having to do so), consider Ruoyao's case where a
> > commercial partner of Loongson wants to do this with the vendor kernel,
> > but the symbols are exported GPL -- in this case I doubt the GPL marking
> > will remain, thus creating inconsistency between upstream and vendor
> > kernels, and community distros are going to complain loudly about the
> > need to patch things. It's probably best to avoid all of this upfront.
>
> It is pretty easy to load a non-GPL module into a distro-built
> kernel and call GPL-only functions.
> (And without doing horrid things with kallsyms.)
> As soon as you actually need to do one, adding others isn't a problem.

Hmm, do you mean patching the kernel downstream to remove the license 
checks, or something like that? I remember the so-called "GPL condom" 
trick was banned some time earlier, in commit 262e6ae7081df ("modules: 
inherit TAINT_PROPRIETARY_MODULE"). For now I can't think of a way that 
would allow such reference...

--
WANG "xen0n" Xuerui

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