From patchwork Tue Mar 24 08:48:11 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Masahiro Yamada X-Patchwork-Id: 11454887 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DC25417D4 for ; Tue, 24 Mar 2020 08:52:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BED5A20870 for ; Tue, 24 Mar 2020 08:52:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1585039922; bh=zwIub6HHnoSb9qEVBr7eVfzfICM9rys2HdM8mpRAjGE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=tHPbTZnMU7Vm8xEYAqciWjX02QHd1MFnaOKOI4RyvoxXT8pjWauG1/JMpnKkY4PIc 08/fva05DSmItnslg67L0/HDg6pVuxIMJ2ihaV2k4UMnyQjoD69YNPqPRFEcIL2lxD QZVEgQbkwXuckghHuAltSlPxMeOn+ZJD8lJtn6lg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727280AbgCXIvJ (ORCPT ); Tue, 24 Mar 2020 04:51:09 -0400 Received: from conuserg-09.nifty.com ([210.131.2.76]:17110 "EHLO conuserg-09.nifty.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727119AbgCXIvI (ORCPT ); Tue, 24 Mar 2020 04:51:08 -0400 Received: from pug.e01.socionext.com (p14092-ipngnfx01kyoto.kyoto.ocn.ne.jp [153.142.97.92]) (authenticated) by conuserg-09.nifty.com with ESMTP id 02O8mgsd011219; Tue, 24 Mar 2020 17:48:51 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conuserg-09.nifty.com 02O8mgsd011219 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com; s=dec2015msa; t=1585039732; bh=uHlP0H5KSWMnx8rYeC99bkG9lolI7OWMeHS6ySUM25g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wVw9dw6dnNF+YfYjVj8EdFdJmRiJKozsxaOTnHg89+Mkw/dNnUcJNpEv5mFoaIV8/ LD2ce2R8b3jy9r76/EGMarViHW7VyigkTZIWtr57X+V4nPRmGUXppdz7f5Vq/Wvg6g kGRSkvNpc1GMpIH3dgSCTx0NPYllK1DqWTxevGbSCctO2Ii97mzR/JKP8L3aSMCJ0+ qozVSO89Qn4pwrPhDH7kOFvUM2T44WkcJmneMh2t/xtHoqNIOUuN7IXPtYx54ahmjr PzR2UfWGMAbawOshMUfN3V/W0vMYETE1CljQatRTLmAt1/1+zvPVXCfJp/XqFOwdY+ Vs8joUNzc/lKg== X-Nifty-SrcIP: [153.142.97.92] From: Masahiro Yamada To: linux-kernel@vger.kernel.org Cc: "David S . Miller" , Linus Torvalds , Kees Cook , clang-built-linux@googlegroups.com, Herbert Xu , linux-crypto@vger.kernel.org, Ingo Molnar , Thomas Gleixner , Borislav Petkov , Peter Zijlstra , "H . Peter Anvin" , x86@kernel.org, linux-kbuild@vger.kernel.org, Masahiro Yamada Subject: [PATCH 06/16] x86: remove always-defined CONFIG_AS_SSSE3 Date: Tue, 24 Mar 2020 17:48:11 +0900 Message-Id: <20200324084821.29944-7-masahiroy@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200324084821.29944-1-masahiroy@kernel.org> References: <20200324084821.29944-1-masahiroy@kernel.org> Sender: linux-kbuild-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.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 $(call as-instr,...) can be assembled by the binutils 2.21 assembler and also by LLVM integrated assembler. Remove CONFIG_AS_SSSE3, which is always defined. I added ifdef CONFIG_X86 to lib/raid6/algos.c to avoid link errors on non-x86 architectures. lib/raid6/algos.c is built not only for the kernel but also for testing the library code from userspace. I added -DCONFIG_X86 to lib/raid6/test/Makefile to cator to this usecase. Signed-off-by: Masahiro Yamada Acked-by: Jason A. Donenfeld Reviewed-by: Nick Desaulniers --- arch/x86/Makefile | 5 ++--- arch/x86/crypto/blake2s-core.S | 2 -- lib/raid6/algos.c | 2 +- lib/raid6/recov_ssse3.c | 6 ------ lib/raid6/test/Makefile | 4 +--- 5 files changed, 4 insertions(+), 15 deletions(-) diff --git a/arch/x86/Makefile b/arch/x86/Makefile index e4a062313bb0..94f89612e024 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -178,7 +178,6 @@ ifeq ($(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..df08664d3432 100644 --- a/lib/raid6/algos.c +++ b/lib/raid6/algos.c @@ -97,13 +97,13 @@ void (*raid6_datap_recov)(int, size_t, int, void **); EXPORT_SYMBOL_GPL(raid6_datap_recov); const struct raid6_recov_calls *const raid6_recov_algos[] = { +#ifdef CONFIG_X86 #ifdef CONFIG_AS_AVX512 &raid6_recov_avx512, #endif #ifdef CONFIG_AS_AVX2 &raid6_recov_avx2, #endif -#ifdef CONFIG_AS_SSSE3 &raid6_recov_ssse3, #endif #ifdef CONFIG_S390 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 #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 b9e6c3648be1..60021319ac78 100644 --- a/lib/raid6/test/Makefile +++ b/lib/raid6/test/Makefile @@ -34,9 +34,7 @@ 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 2>&1 && \ - rm ./-.o && echo -DCONFIG_AS_SSSE3=1) + CFLAGS += -DCONFIG_X86 CFLAGS += $(shell echo "vpbroadcastb %xmm0, %ymm1" | \ gcc -c -x assembler - >/dev/null 2>&1 && \ rm ./-.o && echo -DCONFIG_AS_AVX2=1)