linux-kernel - [PATCH v2 1/6] x86: add kconfig symbols for assembler VAES and VPCLMULQDQ support

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Message-ID: <20240329080355.2871-2-ebiggers@kernel.org>
Date: Fri, 29 Mar 2024 01:03:49 -0700
From: Eric Biggers <ebiggers@...nel.org>
To: linux-crypto@...r.kernel.org,
	x86@...nel.org
Cc: linux-kernel@...r.kernel.org,
	Ard Biesheuvel <ardb@...nel.org>,
	Andy Lutomirski <luto@...nel.org>,
	"Chang S . Bae" <chang.seok.bae@...el.com>,
	Ingo Molnar <mingo@...nel.org>
Subject: [PATCH v2 1/6] x86: add kconfig symbols for assembler VAES and VPCLMULQDQ support

From: Eric Biggers <ebiggers@...gle.com>

Add config symbols AS_VAES and AS_VPCLMULQDQ that expose whether the
assembler supports the vector AES and carryless multiplication
cryptographic extensions.

Reviewed-by: Ingo Molnar <mingo@...nel.org>
Signed-off-by: Eric Biggers <ebiggers@...gle.com>
---
 arch/x86/Kconfig.assembler | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/x86/Kconfig.assembler b/arch/x86/Kconfig.assembler
index 8ad41da301e5..59aedf32c4ea 100644
--- a/arch/x86/Kconfig.assembler
+++ b/arch/x86/Kconfig.assembler
@@ -23,9 +23,19 @@ config AS_TPAUSE
 config AS_GFNI
 	def_bool $(as-instr,vgf2p8mulb %xmm0$(comma)%xmm1$(comma)%xmm2)
 	help
 	  Supported by binutils >= 2.30 and LLVM integrated assembler
 
+config AS_VAES
+	def_bool $(as-instr,vaesenc %ymm0$(comma)%ymm1$(comma)%ymm2)
+	help
+	  Supported by binutils >= 2.30 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 $(as-instr,wrussq %rax$(comma)(%rbx))
 	help
 	  Supported by binutils >= 2.31 and LLVM integrated assembler
-- 
2.44.0