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| author |   Jason A. Donenfeld <Jason@zx2c4.com> | 2018-10-07 00:19:14 +0200 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2018-10-07 02:24:31 +0200 |
| commit | bddaca79f57aac71d63d2cb4713de5ee4320cc28 (patch) | |
| tree | 7e3bdb638ccdbdcdaf8289acca2cc39bff49aed4 /src/compat/simd-asm | |
| parent | compat: account for ancient ARM assembler (diff) | |
| download | wireguard-monolithic-historical-bddaca79f57aac71d63d2cb4713de5ee4320cc28.tar.xz wireguard-monolithic-historical-bddaca79f57aac71d63d2cb4713de5ee4320cc28.zip | |
compat: make asm/simd.h conditional on its existence
Android kernels backported it, complicating things.
Diffstat (limited to 'src/compat/simd-asm')
| -rw-r--r-- | src/compat/simd-asm/include/asm/simd.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/compat/simd-asm/include/asm/simd.h b/src/compat/simd-asm/include/asm/simd.h new file mode 100644 index 0000000..a975b38 --- /dev/null +++ b/src/compat/simd-asm/include/asm/simd.h @@ -0,0 +1,21 @@ +#ifndef _COMPAT_ASM_SIMD_H +#define _COMPAT_ASM_SIMD_H + +#if defined(CONFIG_X86_64) +#include <asm/fpu/api.h> +#endif + +static __must_check inline bool may_use_simd(void) +{ +#if defined(CONFIG_X86_64) + return irq_fpu_usable(); +#elif defined(CONFIG_ARM64) && defined(CONFIG_KERNEL_MODE_NEON) + return true; +#elif defined(CONFIG_ARM) && defined(CONFIG_KERNEL_MODE_NEON) + return !in_nmi() && !in_irq() && !in_serving_softirq(); +#else + return false; +#endif +} + +#endif |