From: Masahiro Yamada <masahiroy@kernel.org>
To: x86@kernel.org, Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Borislav Petkov <bp@alien8.de>, "H . Peter Anvin" <hpa@zytor.com>
Cc: linux-kernel@vger.kernel.org,
"Jason A . Donenfeld" <Jason@zx2c4.com>,
Masahiro Yamada <masahiroy@kernel.org>,
Allison Randal <allison@lohutok.net>,
Armijn Hemel <armijn@tjaldur.nl>,
"David S. Miller" <davem@davemloft.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Herbert Xu <herbert@gondor.apana.org.au>,
Ingo Molnar <mingo@redhat.com>,
Kate Stewart <kstewart@linuxfoundation.org>,
Song Liu <songliubraving@fb.com>,
Zhengyuan Liu <liuzhengyuan@kylinos.cn>,
clang-built-linux@googlegroups.com, linux-crypto@vger.kernel.org
Subject: [PATCH 5/7] x86: remove always-defined CONFIG_AS_SSSE3
Date: Mon, 23 Mar 2020 11:08:42 +0900 [thread overview]
Message-ID: <20200323020844.17064-6-masahiroy@kernel.org> (raw)
In-Reply-To: <20200323020844.17064-1-masahiroy@kernel.org>
CONFIG_AS_SSSE3 was introduced by commit 75aaf4c3e6a4 ("x86/raid6:
correctly check for assembler capabilities").
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").
I confirmed the code in $(call as-instr,...) can be assembled by the
binutils 2.21 assembler and also by LLVM integrated assembler.
Remove CONFIG_AS_SSSE3, which is always defined.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---
arch/x86/Makefile | 5 ++---
arch/x86/crypto/blake2s-core.S | 2 --
lib/raid6/algos.c | 2 --
lib/raid6/recov_ssse3.c | 6 ------
lib/raid6/test/Makefile | 3 ---
5 files changed, 2 insertions(+), 16 deletions(-)
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index e4a062313bb0..94f89612e024 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -178,7 +178,6 @@ ifeq ($(ACCUMULATE_OUTGOING_ARGS), 1)
endif
# does binutils support specific instructions?
-asinstr += $(call as-instr,pshufb %xmm0$(comma)%xmm0,-DCONFIG_AS_SSSE3=1)
avx_instr := $(call as-instr,vxorps %ymm0$(comma)%ymm1$(comma)%ymm2,-DCONFIG_AS_AVX=1)
avx2_instr :=$(call as-instr,vpbroadcastb %xmm0$(comma)%ymm1,-DCONFIG_AS_AVX2=1)
avx512_instr :=$(call as-instr,vpmovm2b %k1$(comma)%zmm5,-DCONFIG_AS_AVX512=1)
@@ -186,8 +185,8 @@ sha1_ni_instr :=$(call as-instr,sha1msg1 %xmm0$(comma)%xmm1,-DCONFIG_AS_SHA1_NI=
sha256_ni_instr :=$(call as-instr,sha256msg1 %xmm0$(comma)%xmm1,-DCONFIG_AS_SHA256_NI=1)
adx_instr := $(call as-instr,adox %r10$(comma)%r10,-DCONFIG_AS_ADX=1)
-KBUILD_AFLAGS += $(asinstr) $(avx_instr) $(avx2_instr) $(avx512_instr) $(sha1_ni_instr) $(sha256_ni_instr) $(adx_instr)
-KBUILD_CFLAGS += $(asinstr) $(avx_instr) $(avx2_instr) $(avx512_instr) $(sha1_ni_instr) $(sha256_ni_instr) $(adx_instr)
+KBUILD_AFLAGS += $(avx_instr) $(avx2_instr) $(avx512_instr) $(sha1_ni_instr) $(sha256_ni_instr) $(adx_instr)
+KBUILD_CFLAGS += $(avx_instr) $(avx2_instr) $(avx512_instr) $(sha1_ni_instr) $(sha256_ni_instr) $(adx_instr)
KBUILD_LDFLAGS := -m elf_$(UTS_MACHINE)
diff --git a/arch/x86/crypto/blake2s-core.S b/arch/x86/crypto/blake2s-core.S
index 24910b766bdd..2ca79974f819 100644
--- a/arch/x86/crypto/blake2s-core.S
+++ b/arch/x86/crypto/blake2s-core.S
@@ -46,7 +46,6 @@ SIGMA2:
#endif /* CONFIG_AS_AVX512 */
.text
-#ifdef CONFIG_AS_SSSE3
SYM_FUNC_START(blake2s_compress_ssse3)
testq %rdx,%rdx
je .Lendofloop
@@ -174,7 +173,6 @@ SYM_FUNC_START(blake2s_compress_ssse3)
.Lendofloop:
ret
SYM_FUNC_END(blake2s_compress_ssse3)
-#endif /* CONFIG_AS_SSSE3 */
#ifdef CONFIG_AS_AVX512
SYM_FUNC_START(blake2s_compress_avx512)
diff --git a/lib/raid6/algos.c b/lib/raid6/algos.c
index bf1b4765c8f6..77457ea5a239 100644
--- a/lib/raid6/algos.c
+++ b/lib/raid6/algos.c
@@ -103,9 +103,7 @@ const struct raid6_recov_calls *const raid6_recov_algos[] = {
#ifdef CONFIG_AS_AVX2
&raid6_recov_avx2,
#endif
-#ifdef CONFIG_AS_SSSE3
&raid6_recov_ssse3,
-#endif
#ifdef CONFIG_S390
&raid6_recov_s390xc,
#endif
diff --git a/lib/raid6/recov_ssse3.c b/lib/raid6/recov_ssse3.c
index 1de97d2405d0..4bfa3c6b60de 100644
--- a/lib/raid6/recov_ssse3.c
+++ b/lib/raid6/recov_ssse3.c
@@ -3,8 +3,6 @@
* Copyright (C) 2012 Intel Corporation
*/
-#ifdef CONFIG_AS_SSSE3
-
#include <linux/raid/pq.h>
#include "x86.h"
@@ -328,7 +326,3 @@ const struct raid6_recov_calls raid6_recov_ssse3 = {
#endif
.priority = 1,
};
-
-#else
-#warning "your version of binutils lacks SSSE3 support"
-#endif
diff --git a/lib/raid6/test/Makefile b/lib/raid6/test/Makefile
index 3ab8720aa2f8..79777645cac9 100644
--- a/lib/raid6/test/Makefile
+++ b/lib/raid6/test/Makefile
@@ -34,9 +34,6 @@ endif
ifeq ($(IS_X86),yes)
OBJS += mmx.o sse1.o sse2.o avx2.o recov_ssse3.o recov_avx2.o avx512.o recov_avx512.o
- CFLAGS += $(shell echo "pshufb %xmm0, %xmm0" | \
- gcc -c -x assembler - >&/dev/null && \
- rm ./-.o && echo -DCONFIG_AS_SSSE3=1)
CFLAGS += $(shell echo "vpbroadcastb %xmm0, %ymm1" | \
gcc -c -x assembler - >&/dev/null && \
rm ./-.o && echo -DCONFIG_AS_AVX2=1)
--
2.17.1
next prev parent reply other threads:[~2020-03-23 2:11 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-23 2:08 [PATCH 0/7] x86: remove always-defined CONFIG_AS_* options Masahiro Yamada
2020-03-23 2:08 ` [PATCH 1/7] x86: remove unneeded defined(__ASSEMBLY__) check from asm/dwarf2.h Masahiro Yamada
2020-03-23 2:08 ` [PATCH 2/7] x86: remove always-defined CONFIG_AS_CFI Masahiro Yamada
2020-03-23 20:37 ` Nick Desaulniers
2020-03-23 2:08 ` [PATCH 3/7] x86: remove always-defined CONFIG_AS_CFI_SIGNAL_FRAME Masahiro Yamada
2020-03-23 20:45 ` Nick Desaulniers
2020-03-23 2:08 ` [PATCH 4/7] x86: remove always-defined CONFIG_AS_CFI_SECTIONS Masahiro Yamada
2020-03-23 20:59 ` Nick Desaulniers
2020-03-23 2:08 ` Masahiro Yamada [this message]
2020-03-23 18:06 ` [PATCH 5/7] x86: remove always-defined CONFIG_AS_SSSE3 Jason A. Donenfeld
2020-03-23 20:44 ` Masahiro Yamada
2020-03-23 20:48 ` Jason A. Donenfeld
2020-03-23 21:01 ` Jason A. Donenfeld
2020-03-23 2:08 ` [PATCH 6/7] x86: remove always-defined CONFIG_AS_AVX Masahiro Yamada
2020-03-23 2:08 ` [PATCH 7/7] x86: add comments about the binutils version to support code in as-instr Masahiro Yamada
2020-03-23 4:07 ` [PATCH 0/7] x86: remove always-defined CONFIG_AS_* options Jason A. Donenfeld
2020-03-23 4:28 ` Jason A. Donenfeld
2020-03-23 6:35 ` Masahiro Yamada
2020-03-23 6:53 ` Jason A. Donenfeld
2020-03-23 9:52 ` Sedat Dilek
2020-03-23 19:50 ` Jason A. Donenfeld
2020-03-24 8:46 ` Sedat Dilek
2020-03-23 22:03 ` Masahiro Yamada
2020-03-23 22:10 ` Jason A. Donenfeld
2020-03-23 19:45 ` Nick Desaulniers
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