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crypto: x86/sha256 - autoload if SHA-NI detected

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The x86 SHA-256 module contains four implementations: SSSE3, AVX, AVX2,
and SHA-NI.  Commit 1c43c0f1f8 ("crypto: x86/sha - load modules based
on CPU features") made the module be autoloaded when SSSE3, AVX, or AVX2
is detected.  The omission of SHA-NI appears to be an oversight, perhaps
because of the outdated file-level comment.  This patch fixes this,
though in practice this makes no difference because SSSE3 is a subset of
the other three features anyway.  Indeed, sha256_ni_transform() executes
SSSE3 instructions such as pshufb.

Reviewed-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Eric Biggers 2023-10-31 20:18:11 -07:00 • committed by Herbert Xu
parent 20342e3f64
commit ba5a434d5a
1 changed files with 5 additions and 2 deletions
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7
arch/x86/crypto/sha256_ssse3_glue.c
View file

@ -1,8 +1,8 @@
/*
* Cryptographic API.
*
* Glue code for the SHA256 Secure Hash Algorithm assembler
* implementation using supplemental SSE3 / AVX / AVX2 instructions.
* Glue code for the SHA256 Secure Hash Algorithm assembler implementations
* using SSSE3, AVX, AVX2, and SHA-NI instructions.
*
* This file is based on sha256_generic.c
*
@ -45,6 +45,9 @@ asmlinkage void sha256_transform_ssse3(struct sha256_state *state,
const u8 *data, int blocks);
static const struct x86_cpu_id module_cpu_ids[] = {
#ifdef CONFIG_AS_SHA256_NI
X86_MATCH_FEATURE(X86_FEATURE_SHA_NI, NULL),
#endif
X86_MATCH_FEATURE(X86_FEATURE_AVX2, NULL),
X86_MATCH_FEATURE(X86_FEATURE_AVX, NULL),
X86_MATCH_FEATURE(X86_FEATURE_SSSE3, NULL),