| Message ID | 20200326080104.27286-12-masahiroy@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | x86, crypto: remove always-defined CONFIG_AS_* and cosolidate Kconfig/Makefiles | expand |
On Thu, Mar 26, 2020 at 1:02 AM Masahiro Yamada <masahiroy@kernel.org> wrote: > > We raise the minimal supported binutils version from time to time. > The last bump was commit 1fb12b35e5ff ("kbuild: Raise the minimum > required binutils version to 2.21"). > > We need to keep these as-instr checks because binutils 2.21 does not > support them. > > I hope this will be a good hint which one can be dropped when we > bump the minimal binutils version next time. > > As for the Clang/LLVM builds, we require very new LLVM version, > so the LLVM integrated assembler supports all of them. > > Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> > Acked-by: Jason A. Donenfeld <Jason@zx2c4.com> Acked-by: Nick Desaulniers <ndesaulniers@google.com> > --- > > Changes in v2: > - Change the patch order and rebase > > arch/x86/Kconfig.assembler | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/arch/x86/Kconfig.assembler b/arch/x86/Kconfig.assembler > index 91230bf11a14..a5a1d2766b3a 100644 > --- a/arch/x86/Kconfig.assembler > +++ b/arch/x86/Kconfig.assembler > @@ -3,15 +3,25 @@ > > config AS_AVX2 > def_bool $(as-instr,vpbroadcastb %xmm0$(comma)%ymm1) > + help > + Supported by binutils >= 2.22 and LLVM integrated assembler > > config AS_AVX512 > def_bool $(as-instr,vpmovm2b %k1$(comma)%zmm5) > + 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 > + Supported by binutils >= 2.24 and LLVM integrated assembler > > config AS_ADX > def_bool $(as-instr,adox %eax$(comma)%eax) > + help > + Supported by binutils >= 2.23 and LLVM integrated assembler > -- > 2.17.1 >
diff --git a/arch/x86/Kconfig.assembler b/arch/x86/Kconfig.assembler index 91230bf11a14..a5a1d2766b3a 100644 --- a/arch/x86/Kconfig.assembler +++ b/arch/x86/Kconfig.assembler @@ -3,15 +3,25 @@ config AS_AVX2 def_bool $(as-instr,vpbroadcastb %xmm0$(comma)%ymm1) + help + Supported by binutils >= 2.22 and LLVM integrated assembler config AS_AVX512 def_bool $(as-instr,vpmovm2b %k1$(comma)%zmm5) + 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 + Supported by binutils >= 2.24 and LLVM integrated assembler config AS_ADX def_bool $(as-instr,adox %eax$(comma)%eax) + help + Supported by binutils >= 2.23 and LLVM integrated assembler
We raise the minimal supported binutils version from time to time. The last bump was commit 1fb12b35e5ff ("kbuild: Raise the minimum required binutils version to 2.21"). We need to keep these as-instr checks because binutils 2.21 does not support them. I hope this will be a good hint which one can be dropped when we bump the minimal binutils version next time. As for the Clang/LLVM builds, we require very new LLVM version, so the LLVM integrated assembler supports all of them. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Jason A. Donenfeld <Jason@zx2c4.com> --- Changes in v2: - Change the patch order and rebase arch/x86/Kconfig.assembler | 10 ++++++++++ 1 file changed, 10 insertions(+)