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Before modifying the prototypes of kernel_neon_begin() and kernel_neon_end() to accommodate kernel mode FP/SIMD state buffers allocated on the stack, move arm64 to the new 'ksimd' scoped guard API, which encapsulates the calls to those functions. For symmetry, do the same for 32-bit ARM too. Reviewed-by: Eric Biggers <ebiggers@kernel.org> Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>