From: Masahiro Yamada <masahiroy@kernel.org>
To: linux-kbuild@vger.kernel.org
Cc: Thomas Gleixner <tglx@linutronix.de>,
Nick Desaulniers <ndesaulniers@google.com>,
Borislav Petkov <bp@alien8.de>,
Peter Zijlstra <peterz@infradead.org>,
"H . Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, "Jason A . Donenfeld" <Jason@zx2c4.com>,
clang-built-linux@googlegroups.com,
Masahiro Yamada <masahiroy@kernel.org>,
Ingo Molnar <mingo@redhat.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH v2 11/16] x86: add comments about the binutils version to support code in as-instr
Date: Thu, 26 Mar 2020 17:00:59 +0900 [thread overview]
Message-ID: <20200326080104.27286-12-masahiroy@kernel.org> (raw)
In-Reply-To: <20200326080104.27286-1-masahiroy@kernel.org>
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(+)
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
next prev parent reply other threads:[~2020-03-26 8:03 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-26 8:00 [PATCH v2 00/16] x86, crypto: remove always-defined CONFIG_AS_* and cosolidate Kconfig/Makefiles Masahiro Yamada
2020-03-26 8:00 ` [PATCH v2 01/16] lib/raid6/test: fix build on distros whose /bin/sh is not bash Masahiro Yamada
2020-03-26 8:00 ` [PATCH v2 02/16] x86: remove unneeded defined(__ASSEMBLY__) check from asm/dwarf2.h Masahiro Yamada
2020-03-26 8:00 ` [PATCH v2 03/16] x86: remove always-defined CONFIG_AS_CFI Masahiro Yamada
2020-03-26 8:00 ` [PATCH v2 04/16] x86: remove unneeded (CONFIG_AS_)CFI_SIGNAL_FRAME Masahiro Yamada
2020-03-26 8:00 ` [PATCH v2 05/16] x86: remove always-defined CONFIG_AS_CFI_SECTIONS Masahiro Yamada
2020-03-26 8:00 ` [PATCH v2 06/16] x86: remove always-defined CONFIG_AS_SSSE3 Masahiro Yamada
2020-03-26 8:00 ` [PATCH v2 07/16] x86: remove always-defined CONFIG_AS_AVX Masahiro Yamada
2020-03-26 8:00 ` [PATCH v2 08/16] x86: replace arch macros from compiler with CONFIG_X86_{32,64} Masahiro Yamada
2020-03-31 2:40 ` Masahiro Yamada
2020-03-31 4:38 ` Jason A. Donenfeld
2020-03-26 8:00 ` [PATCH v2 09/16] drm/i915: remove always-defined CONFIG_AS_MOVNTDQA Masahiro Yamada
2020-03-26 8:24 ` Jani Nikula
2020-03-26 8:00 ` [PATCH v2 10/16] x86: probe assembler capabilities via kconfig instead of makefile Masahiro Yamada
2020-03-26 17:49 ` Nick Desaulniers
2020-03-26 19:53 ` Jason A. Donenfeld
2020-03-26 20:00 ` Nick Desaulniers
2020-03-26 8:00 ` Masahiro Yamada [this message]
2020-03-26 17:50 ` [PATCH v2 11/16] x86: add comments about the binutils version to support code in as-instr Nick Desaulniers
2020-03-26 8:01 ` [PATCH v2 12/16] crypto: x86 - rework configuration based on Kconfig Masahiro Yamada
2020-03-26 8:01 ` [PATCH v2 13/16] crypto: curve25519 - do not pollute dispatcher based on assembler Masahiro Yamada
2020-03-26 8:01 ` [PATCH v2 14/16] Documentation/changes: Raise minimum supported binutils version to 2.23 Masahiro Yamada
2020-03-26 8:01 ` [PATCH v2 15/16] x86: update AS_* macros to binutils >=2.23, supporting ADX and AVX2 Masahiro Yamada
2020-03-26 17:55 ` Nick Desaulniers
2020-03-26 19:48 ` Jason A. Donenfeld
2020-03-26 19:58 ` Nick Desaulniers
2020-03-26 20:26 ` [PATCH] " Jason A. Donenfeld
2020-03-26 20:29 ` Nick Desaulniers
2020-03-26 20:50 ` Masahiro Yamada
2020-03-26 8:01 ` [PATCH v2 16/16] crypto: x86 - clean up poly1305-x86_64-cryptogams.S by 'make clean' Masahiro Yamada
2020-03-26 8:12 ` [PATCH v2 00/16] x86, crypto: remove always-defined CONFIG_AS_* and cosolidate Kconfig/Makefiles Jason A. Donenfeld
2020-03-26 9:22 ` Ingo Molnar
2020-03-26 20:43 ` Masahiro Yamada
2020-03-26 20:46 ` Jason A. Donenfeld
2020-03-26 21:12 ` Masahiro Yamada
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