Commit aaeca984 authored by Mark Brown's avatar Mark Brown Committed by Will Deacon
Browse files

arm64/fpsimd: Make kernel_neon_ API _GPL 



Currently for reasons lost in the mists of time the kernel_neon_ APIs are
EXPORT_SYMBOL() but the general policy for floating point usage is that it
should be GPL only given the non-standard runtime environment that holds
while it is in use and PCS impacts when code is compiled for FP usage.

Given the limited existing deployment of non-GPL modules for arm64 and the
fact that other architectures like x86 already make their equivalent
functions GPL only this is not expected to be disruptive to existing users.

Suggested-by: default avatarChristoph Hellwig <hch@infradead.org>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20221107170747.276910-1-broonie@kernel.org


Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent f0c4d9fc

arch/arm64/kernel/fpsimd.c

+2 −2
Original line number Diff line number Diff line
@@ -1838,7 +1838,7 @@ void kernel_neon_begin(void) 
	/* Invalidate any task state remaining in the fpsimd regs: */

	fpsimd_flush_cpu_state();

}

EXPORT_SYMBOL(kernel_neon_begin);

EXPORT_SYMBOL_GPL(kernel_neon_begin);



/*

 * kernel_neon_end(): give the CPU FPSIMD registers back to the current task
@@ -1856,7 +1856,7 @@ void kernel_neon_end(void) 


	put_cpu_fpsimd_context();

}

EXPORT_SYMBOL(kernel_neon_end);

EXPORT_SYMBOL_GPL(kernel_neon_end);



#ifdef CONFIG_EFI