| Message ID | 20231101031811.23028-1-ebiggers@kernel.org (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Herbert Xu |
| Headers | show |
| Series | [v2] crypto: x86/sha256 - autoload if SHA-NI detected | expand |
Eric Biggers <ebiggers@kernel.org> wrote: > From: Eric Biggers <ebiggers@google.com> > > 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 because of the outdated file-level comment.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@canonical.com> > Signed-off-by: Eric Biggers <ebiggers@google.com> > --- > > v2: added #ifdef > > arch/x86/crypto/sha256_ssse3_glue.c | 7 +++++-- > 1 file changed, 5 insertions(+), 2 deletions(-) Patch applied. Thanks.
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@linux.intel.com> * * 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) {