On Fri, 18 Dec 2020 at 22:07, Megha Dey <megha.dey@xxxxxxxxx> wrote: > > 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@xxxxxxxxxx > Signed-off-by: Megha Dey <megha.dey@xxxxxxxxx> > --- > arch/x86/Kconfig.assembler | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/arch/x86/Kconfig.assembler b/arch/x86/Kconfig.assembler > index 26b8c08..9ea0bc8 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@xxxxxxxxx>. All Rights Reserved. > > +config AS_VAES_AVX512 > + def_bool $(as-instr,vaesenc %zmm0$(comma)%zmm1$(comma)%zmm1) && 64BIT Is the '&& 64BIT' necessary here, but not below? In any case, better to use a separate 'depends on' line, for legibility > + 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 > -- > 2.7.4 >
