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arm64/fpsimd: Make kernel_neon_ API _GPL

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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: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20221107170747.276910-1-broonie@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Mark Brown 2022-11-07 17:07:47 +00:00 committed by Will Deacon
parent f0c4d9fc9c
commit aaeca98456
1 changed files with 2 additions and 2 deletions
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4
arch/arm64/kernel/fpsimd.c
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@ -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