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Message-ID: <175578039814.1420.6303269539921395888.tip-bot2@tip-bot2>
Date: Thu, 21 Aug 2025 12:46:36 -0000
From: "tip-bot2 for Uros Bizjak" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Uros Bizjak <ubizjak@...il.com>, "Borislav Petkov (AMD)" <bp@...en8.de>,
 Herbert Xu <herbert@...dor.apana.org.au>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: x86/cleanups] crypto: x86 - Remove CONFIG_AS_VPCLMULQDQ

The following commit has been merged into the x86/cleanups branch of tip:

Commit-ID:     e084e9f8151f1d37b085317752d36b4fa2fec9b9
Gitweb:        https://git.kernel.org/tip/e084e9f8151f1d37b085317752d36b4fa2fec9b9
Author:        Uros Bizjak <ubizjak@...il.com>
AuthorDate:    Tue, 19 Aug 2025 10:57:51 +02:00
Committer:     Borislav Petkov (AMD) <bp@...en8.de>
CommitterDate: Thu, 21 Aug 2025 14:32:41 +02:00

crypto: x86 - Remove CONFIG_AS_VPCLMULQDQ

Current minimum required version of binutils is 2.30, which supports VPCLMULQDQ
instruction mnemonics.

Remove check for assembler support of VPCLMULQDQ instructions and all relevant
macros for conditional compilation.

No functional change intended.

Signed-off-by: Uros Bizjak <ubizjak@...il.com>
Signed-off-by: Borislav Petkov (AMD) <bp@...en8.de>
Acked-by: Herbert Xu <herbert@...dor.apana.org.au>
Link: https://lore.kernel.org/20250819085855.333380-3-ubizjak@gmail.com
---
 arch/x86/Kconfig.assembler           |  5 -----
 arch/x86/crypto/Makefile             |  6 ++----
 arch/x86/crypto/aes-ctr-avx-x86_64.S |  2 --
 arch/x86/crypto/aes-xts-avx-x86_64.S |  2 --
 arch/x86/crypto/aesni-intel_glue.c   | 22 +++-------------------
 5 files changed, 5 insertions(+), 32 deletions(-)

diff --git a/arch/x86/Kconfig.assembler b/arch/x86/Kconfig.assembler
index 8d18084..ea0e9df 100644
--- 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_VPCLMULQDQ
-	def_bool $(as-instr,vpclmulqdq \$0x10$(comma)%ymm0$(comma)%ymm1$(comma)%ymm2)
-	help
-	  Supported by binutils >= 2.30 and LLVM integrated assembler
-
 config AS_WRUSS
 	def_bool $(as-instr64,wrussq %rax$(comma)(%rbx))
 	help
diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile
index 50f1c04..419252d 100644
--- a/arch/x86/crypto/Makefile
+++ b/arch/x86/crypto/Makefile
@@ -46,10 +46,8 @@ obj-$(CONFIG_CRYPTO_AES_NI_INTEL) += aesni-intel.o
 aesni-intel-y := aesni-intel_asm.o aesni-intel_glue.o
 aesni-intel-$(CONFIG_64BIT) += aes-ctr-avx-x86_64.o \
 			       aes-gcm-aesni-x86_64.o \
-			       aes-xts-avx-x86_64.o
-ifeq ($(CONFIG_AS_VPCLMULQDQ),y)
-aesni-intel-$(CONFIG_64BIT) += aes-gcm-avx10-x86_64.o
-endif
+			       aes-xts-avx-x86_64.o \
+			       aes-gcm-avx10-x86_64.o
 
 obj-$(CONFIG_CRYPTO_GHASH_CLMUL_NI_INTEL) += ghash-clmulni-intel.o
 ghash-clmulni-intel-y := ghash-clmulni-intel_asm.o ghash-clmulni-intel_glue.o
diff --git a/arch/x86/crypto/aes-ctr-avx-x86_64.S b/arch/x86/crypto/aes-ctr-avx-x86_64.S
index ec957b2..2745918 100644
--- a/arch/x86/crypto/aes-ctr-avx-x86_64.S
+++ b/arch/x86/crypto/aes-ctr-avx-x86_64.S
@@ -552,7 +552,6 @@ SYM_TYPED_FUNC_START(aes_xctr_crypt_aesni_avx)
 	_aes_ctr_crypt	1
 SYM_FUNC_END(aes_xctr_crypt_aesni_avx)
 
-#if defined(CONFIG_AS_VPCLMULQDQ)
 .set	VL, 32
 .set	USE_AVX512, 0
 SYM_TYPED_FUNC_START(aes_ctr64_crypt_vaes_avx2)
@@ -570,4 +569,3 @@ SYM_FUNC_END(aes_ctr64_crypt_vaes_avx512)
 SYM_TYPED_FUNC_START(aes_xctr_crypt_vaes_avx512)
 	_aes_ctr_crypt	1
 SYM_FUNC_END(aes_xctr_crypt_vaes_avx512)
-#endif // CONFIG_AS_VPCLMULQDQ
diff --git a/arch/x86/crypto/aes-xts-avx-x86_64.S b/arch/x86/crypto/aes-xts-avx-x86_64.S
index e44e568..a30753a 100644
--- a/arch/x86/crypto/aes-xts-avx-x86_64.S
+++ b/arch/x86/crypto/aes-xts-avx-x86_64.S
@@ -886,7 +886,6 @@ SYM_TYPED_FUNC_START(aes_xts_decrypt_aesni_avx)
 	_aes_xts_crypt	0
 SYM_FUNC_END(aes_xts_decrypt_aesni_avx)
 
-#if defined(CONFIG_AS_VPCLMULQDQ)
 .set	VL, 32
 .set	USE_AVX512, 0
 SYM_TYPED_FUNC_START(aes_xts_encrypt_vaes_avx2)
@@ -904,4 +903,3 @@ SYM_FUNC_END(aes_xts_encrypt_vaes_avx512)
 SYM_TYPED_FUNC_START(aes_xts_decrypt_vaes_avx512)
 	_aes_xts_crypt	0
 SYM_FUNC_END(aes_xts_decrypt_vaes_avx512)
-#endif /* CONFIG_AS_VPCLMULQDQ */
diff --git a/arch/x86/crypto/aesni-intel_glue.c b/arch/x86/crypto/aesni-intel_glue.c
index d5a2f5b..d953ac4 100644
--- a/arch/x86/crypto/aesni-intel_glue.c
+++ b/arch/x86/crypto/aesni-intel_glue.c
@@ -828,10 +828,8 @@ static struct skcipher_alg skcipher_algs_##suffix[] = {{		       \
 }}
 
 DEFINE_AVX_SKCIPHER_ALGS(aesni_avx, "aesni-avx", 500);
-#if defined(CONFIG_AS_VPCLMULQDQ)
 DEFINE_AVX_SKCIPHER_ALGS(vaes_avx2, "vaes-avx2", 600);
 DEFINE_AVX_SKCIPHER_ALGS(vaes_avx512, "vaes-avx512", 800);
-#endif
 
 /* The common part of the x86_64 AES-GCM key struct */
 struct aes_gcm_key {
@@ -912,17 +910,8 @@ struct aes_gcm_key_avx10 {
 #define FLAG_RFC4106	BIT(0)
 #define FLAG_ENC	BIT(1)
 #define FLAG_AVX	BIT(2)
-#if defined(CONFIG_AS_VPCLMULQDQ)
-#  define FLAG_AVX10_256	BIT(3)
-#  define FLAG_AVX10_512	BIT(4)
-#else
-   /*
-    * This should cause all calls to the AVX10 assembly functions to be
-    * optimized out, avoiding the need to ifdef each call individually.
-    */
-#  define FLAG_AVX10_256	0
-#  define FLAG_AVX10_512	0
-#endif
+#define FLAG_AVX10_256	BIT(3)
+#define FLAG_AVX10_512	BIT(4)
 
 static inline struct aes_gcm_key *
 aes_gcm_key_get(struct crypto_aead *tfm, int flags)
@@ -1519,7 +1508,6 @@ DEFINE_GCM_ALGS(aesni_avx, FLAG_AVX,
 		"generic-gcm-aesni-avx", "rfc4106-gcm-aesni-avx",
 		AES_GCM_KEY_AESNI_SIZE, 500);
 
-#if defined(CONFIG_AS_VPCLMULQDQ)
 /* aes_gcm_algs_vaes_avx10_256 */
 DEFINE_GCM_ALGS(vaes_avx10_256, FLAG_AVX10_256,
 		"generic-gcm-vaes-avx10_256", "rfc4106-gcm-vaes-avx10_256",
@@ -1529,7 +1517,6 @@ DEFINE_GCM_ALGS(vaes_avx10_256, FLAG_AVX10_256,
 DEFINE_GCM_ALGS(vaes_avx10_512, FLAG_AVX10_512,
 		"generic-gcm-vaes-avx10_512", "rfc4106-gcm-vaes-avx10_512",
 		AES_GCM_KEY_AVX10_SIZE, 800);
-#endif /* CONFIG_AS_VPCLMULQDQ */
 
 static int __init register_avx_algs(void)
 {
@@ -1551,7 +1538,6 @@ static int __init register_avx_algs(void)
 	 * Similarly, the assembler support was added at about the same time.
 	 * For simplicity, just always check for VAES and VPCLMULQDQ together.
 	 */
-#if defined(CONFIG_AS_VPCLMULQDQ)
 	if (!boot_cpu_has(X86_FEATURE_AVX2) ||
 	    !boot_cpu_has(X86_FEATURE_VAES) ||
 	    !boot_cpu_has(X86_FEATURE_VPCLMULQDQ) ||
@@ -1592,7 +1578,7 @@ static int __init register_avx_algs(void)
 				    ARRAY_SIZE(aes_gcm_algs_vaes_avx10_512));
 	if (err)
 		return err;
-#endif /* CONFIG_AS_VPCLMULQDQ */
+
 	return 0;
 }
 
@@ -1607,12 +1593,10 @@ static void unregister_avx_algs(void)
 {
 	unregister_skciphers(skcipher_algs_aesni_avx);
 	unregister_aeads(aes_gcm_algs_aesni_avx);
-#if defined(CONFIG_AS_VPCLMULQDQ)
 	unregister_skciphers(skcipher_algs_vaes_avx2);
 	unregister_skciphers(skcipher_algs_vaes_avx512);
 	unregister_aeads(aes_gcm_algs_vaes_avx10_256);
 	unregister_aeads(aes_gcm_algs_vaes_avx10_512);
-#endif
 }
 #else /* CONFIG_X86_64 */
 static struct aead_alg aes_gcm_algs_aesni[0];

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