diff options
| author | Oliver Neukum <oneukum@suse.de> | 2013-10-01 14:34:46 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2013-10-07 14:17:10 +0800 |
| commit | 16c0c4e1656c14ef9deac189a4240b5ca19c6919 (patch) | |
| tree | 6d5cc74603a36d626dbf3aa6a685e015ce69da6e /arch/x86/crypto/sha256_ssse3_glue.c | |
| parent | 165c70f07fee46abcbdbb885f8e90388dbe7ce60 (diff) | |
crypto: sha256_ssse3 - also test for BMI2
The AVX2 implementation also uses BMI2 instructions,
but doesn't test for their availability. The assumption
that AVX2 and BMI2 always go together is false. Some
Haswells have AVX2 but not BMI2.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/x86/crypto/sha256_ssse3_glue.c')
| -rw-r--r-- | arch/x86/crypto/sha256_ssse3_glue.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/crypto/sha256_ssse3_glue.c b/arch/x86/crypto/sha256_ssse3_glue.c index 85021a4a8e0c..f248546da1ca 100644 --- a/arch/x86/crypto/sha256_ssse3_glue.c +++ b/arch/x86/crypto/sha256_ssse3_glue.c @@ -281,7 +281,7 @@ static int __init sha256_ssse3_mod_init(void) /* allow AVX to override SSSE3, it's a little faster */ if (avx_usable()) { #ifdef CONFIG_AS_AVX2 - if (boot_cpu_has(X86_FEATURE_AVX2)) + if (boot_cpu_has(X86_FEATURE_AVX2) && boot_cpu_has(X86_FEATURE_BMI2)) sha256_transform_asm = sha256_transform_rorx; else #endif |