diff options
| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2018-06-16 04:52:35 +0200 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2018-06-17 19:36:37 +0200 |
| commit | 3f62999e8e27a7f315ef9346f34885d76334575a (patch) | |
| tree | 72d1997606568842bb14603238ffe17b4aaadf02 /src/crypto/chacha20poly1305.h | |
| parent | 8186537ff6272a5533e4dcf4b1b428d9328bed44 (diff) | |
simd: encapsulate fpu amortization into nice functions
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Diffstat (limited to 'src/crypto/chacha20poly1305.h')
| -rw-r--r-- | src/crypto/chacha20poly1305.h | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/src/crypto/chacha20poly1305.h b/src/crypto/chacha20poly1305.h index 1b122ac..43b0a17 100644 --- a/src/crypto/chacha20poly1305.h +++ b/src/crypto/chacha20poly1305.h @@ -44,45 +44,6 @@ bool __must_check xchacha20poly1305_decrypt(u8 *dst, const u8 *src, const size_t const u8 nonce[XCHACHA20POLY1305_NONCELEN], const u8 key[CHACHA20POLY1305_KEYLEN]); -#if defined(CONFIG_X86_64) -#include <linux/version.h> -#include <asm/fpu/api.h> -#include <asm/simd.h> -#elif IS_ENABLED(CONFIG_KERNEL_MODE_NEON) -#include <asm/neon.h> -#include <asm/simd.h> -#endif - -static inline bool chacha20poly1305_init_simd(void) -{ - bool have_simd = false; -#if defined(CONFIG_X86_64) && !defined(CONFIG_UML) && !defined(CONFIG_PREEMPT_RT_BASE) - have_simd = irq_fpu_usable(); - if (have_simd) - kernel_fpu_begin(); -#elif IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && !defined(CONFIG_PREEMPT_RT_BASE) -#if defined(CONFIG_ARM64) - have_simd = true; /* ARM64 supports NEON in any context. */ -#elif defined(CONFIG_ARM) - have_simd = may_use_simd(); /* ARM doesn't support NEON in interrupt context. */ -#endif - if (have_simd) - kernel_neon_begin(); -#endif - return have_simd; -} - -static inline void chacha20poly1305_deinit_simd(bool was_on) -{ -#if defined(CONFIG_X86_64) && !defined(CONFIG_UML) - if (was_on) - kernel_fpu_end(); -#elif IS_ENABLED(CONFIG_KERNEL_MODE_NEON) - if (was_on) - kernel_neon_end(); -#endif -} - #ifdef DEBUG bool chacha20poly1305_selftest(void); #endif |