arm64: neon: Export kernel_neon_busy to loadable modules

may_use_simd() can be invoked from loadable modules and it accesses
kernel_neon_busy. Make sure that the latter is exported.

Fixes: cb84d11e1625 ("arm64: neon: Remove support for nested or hardirq kernel-mode NEON")
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c
index 138fcfaeadc1d55400a83d23e6e6e09d506c00fb..9da4e636b328ac347e36147184b1959f83ed3d9d 100644 (file)
--- a/arch/arm64/kernel/fpsimd.c
+++ b/arch/arm64/kernel/fpsimd.c
@@ -255,6 +255,7 @@ void fpsimd_flush_task_state(struct task_struct *t)
 #ifdef CONFIG_KERNEL_MODE_NEON
 
 DEFINE_PER_CPU(bool, kernel_neon_busy);
+EXPORT_PER_CPU_SYMBOL(kernel_neon_busy);
 
 /*
  * Kernel-side NEON support functions