diff mbox series

[RFC,V2,2/5] x86: Probe assembler capabilities for VAES and VPLCMULQDQ support

Message ID 1611386920-28579-3-git-send-email-megha.dey@intel.com (mailing list archive)
State RFC
Delegated to: Herbert Xu
Headers show
Series Introduce AVX512 optimized crypto algorithms | expand

Commit Message

Dey, Megha Jan. 23, 2021, 7:28 a.m. UTC 
This is a preparatory patch to introduce the optimized crypto algorithms
using AVX512 instructions which would require VAES and VPLCMULQDQ support.

Check for VAES and VPCLMULQDQ assembler support using AVX512 registers.

Cc: x86@kernel.org
Signed-off-by: Megha Dey <megha.dey@intel.com>
---
 arch/x86/Kconfig.assembler | 10 ++++++++++
 1 file changed, 10 insertions(+)
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Patch

diff --git a/arch/x86/Kconfig.assembler b/arch/x86/Kconfig.assembler
index 26b8c08..1b07bc6 100644
--- a/arch/x86/Kconfig.assembler
+++ b/arch/x86/Kconfig.assembler
@@ -1,6 +1,16 @@ 
 # SPDX-License-Identifier: GPL-2.0
 # Copyright (C) 2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 
+config AS_VAES_AVX512
+	def_bool $(as-instr,vaesenc %zmm0$(comma)%zmm1$(comma)%zmm1)
+	help
+	  Supported by binutils >= 2.30 and LLVM integrated assembler
+
+config AS_VPCLMULQDQ
+	def_bool $(as-instr,vpclmulqdq \$0$(comma)%zmm2$(comma)%zmm6$(comma)%zmm4)
+	help
+	  Supported by binutils >= 2.30 and LLVM integrated assembler
+
 config AS_AVX512
 	def_bool $(as-instr,vpmovm2b %k1$(comma)%zmm5)
 	help