On Fri, 3 May 2019, Jiri Kosina wrote:
> > Please don't start this. We have everything _GPL that is used for FPU
> > related code and only a few functions are exported because KVM needs it.
>
> That's not completely true. There are a lot of static inlines out there,
> which basically made it possible for external modules to use FPU (in some
> way) when they had kernel_fpu_[begin|end]() available.
... any for many uses that's really the only thing that's needed.
kernel_fpu_beign();
asm volatile ("some SSE2/AVX/... math");
kernel_fpu_end();
No other bits of the FPU API, so there is no way of getting anything wrong
because of FPU intrinsic details really.
So I don't really see a problem with Andy's patch. If we want to annoy
external non-GPL modules as much as possible, sure, that's for a separate
discussion though (and I am sure many people would agree to that).
Proposal to get rid of EXPORT_SYMBOL in favor of EXPORT_SYMBOL_GPL would
be a good start I guess :)
--
Jiri Kosina
SUSE Labs
