diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/crypto/sha1_ssse3_glue.c | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/arch/x86/crypto/sha1_ssse3_glue.c b/arch/x86/crypto/sha1_ssse3_glue.c index 139a55c04d82..74d16ef707c7 100644 --- a/arch/x86/crypto/sha1_ssse3_glue.c +++ b/arch/x86/crypto/sha1_ssse3_glue.c @@ -208,11 +208,7 @@ static bool __init avx_usable(void) { u64 xcr0; -#if defined(CONFIG_AS_AVX2) - if (!cpu_has_avx || !cpu_has_avx2 || !cpu_has_osxsave) -#else if (!cpu_has_avx || !cpu_has_osxsave) -#endif return false; xcr0 = xgetbv(XCR_XFEATURE_ENABLED_MASK); @@ -224,11 +220,23 @@ static bool __init avx_usable(void) return true; } + +#ifdef CONFIG_AS_AVX2 +static bool __init avx2_usable(void) +{ + if (avx_usable() && cpu_has_avx2 && boot_cpu_has(X86_FEATURE_BMI1) && + boot_cpu_has(X86_FEATURE_BMI2)) + return true; + + return false; +} +#endif #endif static int __init sha1_ssse3_mod_init(void) { char *algo_name; + /* test for SSSE3 first */ if (cpu_has_ssse3) { sha1_transform_asm = sha1_transform_ssse3; @@ -238,13 +246,11 @@ static int __init sha1_ssse3_mod_init(void) #ifdef CONFIG_AS_AVX /* allow AVX to override SSSE3, it's a little faster */ if (avx_usable()) { - if (cpu_has_avx) { - sha1_transform_asm = sha1_transform_avx; - algo_name = "AVX"; - } + sha1_transform_asm = sha1_transform_avx; + algo_name = "AVX"; #ifdef CONFIG_AS_AVX2 - if (cpu_has_avx2 && boot_cpu_has(X86_FEATURE_BMI2)) { - /* allow AVX2 to override AVX, it's a little faster */ + /* allow AVX2 to override AVX, it's a little faster */ + if (avx2_usable()) { sha1_transform_asm = sha1_apply_transform_avx2; algo_name = "AVX2"; } |