The FPU is not a super-Linuxy internal detail, so remove the _GPL from its export. Without something like this patch, it's impossible for even highly license-respecting non-GPL modules to use the FPU, which seems silly to me. After all, the FPU is a CPU feature, not really a kernel feature at all.
Cc: Sebastian Andrzej Siewior bigeasy@linutronix.de Cc:: Borislav Petkov bp@suse.de Cc: Rik van Riel riel@surriel.com Cc: "H. Peter Anvin" hpa@zytor.com Cc: "Jason A. Donenfeld" Jason@zx2c4.com Cc: Ard Biesheuvel ard.biesheuvel@linaro.org Cc: Dave Hansen dave.hansen@linux.intel.com Cc: Ingo Molnar mingo@redhat.com Cc: Nicolai Stange nstange@suse.de Cc: Paolo Bonzini pbonzini@redhat.com Cc: Radim Krčmář rkrcmar@redhat.com Cc: Thomas Gleixner tglx@linutronix.de Cc: x86@kernel.org Cc: stable@vger.kernel.org Fixes: 12209993e98c ("x86/fpu: Don't export __kernel_fpu_{begin,end}()") Signed-off-by: Andy Lutomirski luto@kernel.org ---
This fixes a genuine annoyance for ZFS on Linux. Regardless of what one may think about the people who distribute ZFS on Linux *binaries*, as far as I know, the source and the users who build it themselves are entirely respectful of everyone's license. I have no problem with EXPORT_SYMBOL_GPL() in general, but let's please avoid using it for things that aren't fundamentally Linux internals.
arch/x86/kernel/fpu/core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c index 2e5003fef51a..8de5687a470d 100644 --- a/arch/x86/kernel/fpu/core.c +++ b/arch/x86/kernel/fpu/core.c @@ -127,14 +127,14 @@ void kernel_fpu_begin(void) preempt_disable(); __kernel_fpu_begin(); } -EXPORT_SYMBOL_GPL(kernel_fpu_begin); +EXPORT_SYMBOL(kernel_fpu_begin);
void kernel_fpu_end(void) { __kernel_fpu_end(); preempt_enable(); } -EXPORT_SYMBOL_GPL(kernel_fpu_end); +EXPORT_SYMBOL(kernel_fpu_end);
/* * Save the FPU state (mark it for reload if necessary):