crypto: x86 - Remove CONFIG_AS_SHA1_NI

Current minimum required version of binutils is 2.25,
which supports SHA-1 instruction mnemonics.

Remove check for assembler support of SHA-1 instructions
and all relevant macros for conditional compilation.

No functional change intended.

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Reviewed-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/arch/x86/Kconfig.assembler b/arch/x86/Kconfig.assembler
index 6d20a6ce0507d0e2e49c48c45b0003092c8e1d75..70fe87bb10555e1e35cc50f58b0ec54c5f698c92 100644 (file)
--- a/arch/x86/Kconfig.assembler
+++ b/arch/x86/Kconfig.assembler
@@ -6,11 +6,6 @@ config AS_AVX512
        help
          Supported by binutils >= 2.25 and LLVM integrated assembler
 
-config AS_SHA1_NI
-       def_bool $(as-instr,sha1msg1 %xmm0$(comma)%xmm1)
-       help
-         Supported by binutils >= 2.24 and LLVM integrated assembler
-
 config AS_SHA256_NI
        def_bool $(as-instr,sha256msg1 %xmm0$(comma)%xmm1)
        help

diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile
index 5d19f41bde5839a56a18423b56e81e0054f9a468..97c1dbc3b7d61d792fdf03c88aadbe917d89d776 100644 (file)
--- a/arch/x86/crypto/Makefile
+++ b/arch/x86/crypto/Makefile
@@ -56,8 +56,7 @@ aesni-intel-$(CONFIG_64BIT) += aes-gcm-avx10-x86_64.o
 endif
 
 obj-$(CONFIG_CRYPTO_SHA1_SSSE3) += sha1-ssse3.o
-sha1-ssse3-y := sha1_avx2_x86_64_asm.o sha1_ssse3_asm.o sha1_ssse3_glue.o
-sha1-ssse3-$(CONFIG_AS_SHA1_NI) += sha1_ni_asm.o
+sha1-ssse3-y := sha1_avx2_x86_64_asm.o sha1_ssse3_asm.o sha1_ni_asm.o sha1_ssse3_glue.o
 
 obj-$(CONFIG_CRYPTO_SHA256_SSSE3) += sha256-ssse3.o
 sha256-ssse3-y := sha256-ssse3-asm.o sha256-avx-asm.o sha256-avx2-asm.o sha256_ssse3_glue.o

diff --git a/arch/x86/crypto/sha1_ssse3_glue.c b/arch/x86/crypto/sha1_ssse3_glue.c
index ab8bc54f254d37d66a55cbe8a70f8d8580082c84..abb793cbad01f76621447cd649865a1e44e54720 100644 (file)
--- a/arch/x86/crypto/sha1_ssse3_glue.c
+++ b/arch/x86/crypto/sha1_ssse3_glue.c
@@ -28,9 +28,7 @@
 #include <asm/simd.h>
 
 static const struct x86_cpu_id module_cpu_ids[] = {
-#ifdef CONFIG_AS_SHA1_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),
@@ -256,7 +254,6 @@ static void unregister_sha1_avx2(void)
                crypto_unregister_shash(&sha1_avx2_alg);
 }
 
-#ifdef CONFIG_AS_SHA1_NI
 asmlinkage void sha1_ni_transform(struct sha1_state *digest, const u8 *data,
                                  int rounds);
 
@@ -306,11 +303,6 @@ static void unregister_sha1_ni(void)
                crypto_unregister_shash(&sha1_ni_alg);
 }
 
-#else
-static inline int register_sha1_ni(void) { return 0; }
-static inline void unregister_sha1_ni(void) { }
-#endif
-
 static int __init sha1_ssse3_mod_init(void)
 {
        if (!x86_match_cpu(module_cpu_ids))
@@ -360,6 +352,4 @@ MODULE_ALIAS_CRYPTO("sha1");
 MODULE_ALIAS_CRYPTO("sha1-ssse3");
 MODULE_ALIAS_CRYPTO("sha1-avx");
 MODULE_ALIAS_CRYPTO("sha1-avx2");
-#ifdef CONFIG_AS_SHA1_NI
 MODULE_ALIAS_CRYPTO("sha1-ni");
-#endif