From: Eric Biggers <ebiggers@xxxxxxxxxx>
The x86 SHA-256 module contains four implementations: SSSE3, AVX, AVX2,
and SHA-NI. Commit 1c43c0f1f84a ("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because of the outdated file-level comment.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@xxxxxxxxxxxxx>
Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
---
v2: added #ifdef
arch/x86/crypto/sha256_ssse3_glue.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/arch/x86/crypto/sha256_ssse3_glue.c b/arch/x86/crypto/sha256_ssse3_glue.c
index 4c0383a90e114..e04a43d9f7d55 100644
--- a/arch/x86/crypto/sha256_ssse3_glue.c
+++ b/arch/x86/crypto/sha256_ssse3_glue.c
@@ -1,15 +1,15 @@
/*
* 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
*
* Copyright (C) 2013 Intel Corporation.
*
* Author:
* Tim Chen <tim.c.chen@xxxxxxxxxxxxxxx>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
@@ -38,20 +38,23 @@
#include <crypto/sha2.h>
#include <crypto/sha256_base.h>
#include <linux/string.h>
#include <asm/cpu_device_id.h>
#include <asm/simd.h>
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),
{}
};
MODULE_DEVICE_TABLE(x86cpu, module_cpu_ids);
static int _sha256_update(struct shash_desc *desc, const u8 *data,
unsigned int len, sha256_block_fn *sha256_xform)
{
base-commit: f2b88bab69c86d4dab2bfd25a0e741d7df411f7a
--
2.42.0
