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 <20200326202600.7086-1-Jason@zx2c4.com>
In-Reply-To: <20200326202600.7086-1-Jason@zx2c4.com>
From:   Nick Desaulniers <ndesaulniers@google.com>
Date:   Thu, 26 Mar 2020 13:29:08 -0700
Message-ID: <CAKwvOdncEiHJvp+Rz2KZkj7u06k2BCFknvWo9JvxDRWrCf-YPQ@mail.gmail.com>
Subject: Re: [PATCH] x86: update AS_* macros to binutils >=2.23, supporting
 ADX and AVX2
To:     "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc:     Masahiro Yamada <masahiroy@kernel.org>,
        Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>
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On Thu, Mar 26, 2020 at 1:26 PM Jason A. Donenfeld <Jason@zx2c4.com> wrote:
>
> Now that the kernel specifies binutils 2.23 as the minimum version, we
> can remove ifdefs for AVX2 and ADX throughout.
>
> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

That's the version I'd sign off on.  Better to fix potential issues we
know are on the horizon, before they become breakages. Especially with
the merge window fast approaching.  I appreciate you following up on a
fix.
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>

> ---
>
>
> Masahiro - here's an updated patch based on -next, as Nick requested.
> Whether or not you'd prefer this one to the other one based on Linus'
> tree is up to you, but here it is in case it's helpful.
>
>
>  arch/x86/Kconfig.assembler                    | 10 ----------
>  arch/x86/crypto/Makefile                      |  6 ++----
>  arch/x86/crypto/aesni-intel_avx-x86_64.S      |  3 ---
>  arch/x86/crypto/aesni-intel_glue.c            |  7 -------
>  arch/x86/crypto/chacha_glue.c                 |  6 ++----
>  arch/x86/crypto/poly1305-x86_64-cryptogams.pl |  8 --------
>  arch/x86/crypto/poly1305_glue.c               |  5 ++---
>  arch/x86/crypto/sha1_ssse3_glue.c             |  6 ------
>  arch/x86/crypto/sha256-avx2-asm.S             |  3 ---
>  arch/x86/crypto/sha256_ssse3_glue.c           |  6 ------
>  arch/x86/crypto/sha512-avx2-asm.S             |  3 ---
>  arch/x86/crypto/sha512_ssse3_glue.c           |  5 -----
>  crypto/Kconfig                                |  8 ++++----
>  lib/raid6/algos.c                             |  6 ------
>  lib/raid6/avx2.c                              |  4 ----
>  lib/raid6/recov_avx2.c                        |  6 ------
>  lib/raid6/test/Makefile                       |  3 ---
>  net/netfilter/Makefile                        |  2 --
>  net/netfilter/nf_tables_api.c                 |  2 +-
>  net/netfilter/nft_set_pipapo.c                |  2 +-
>  net/netfilter/nft_set_pipapo_avx2.h           |  3 ---
>  21 files changed, 12 insertions(+), 92 deletions(-)
>
> diff --git a/arch/x86/Kconfig.assembler b/arch/x86/Kconfig.assembler
> index a5a1d2766b3a..13de0db38d4e 100644
> --- a/arch/x86/Kconfig.assembler
> +++ b/arch/x86/Kconfig.assembler
> @@ -1,11 +1,6 @@
>  # SPDX-License-Identifier: GPL-2.0
>  # Copyright (C) 2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
>
> -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
> @@ -20,8 +15,3 @@ 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
> diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile
> index 2f23f08fdd4b..928aad453c72 100644
> --- a/arch/x86/crypto/Makefile
> +++ b/arch/x86/crypto/Makefile
> @@ -47,8 +47,7 @@ obj-$(CONFIG_CRYPTO_AEGIS128_AESNI_SSE2) += aegis128-aesni.o
>  aegis128-aesni-y := aegis128-aesni-asm.o aegis128-aesni-glue.o
>
>  obj-$(CONFIG_CRYPTO_CHACHA20_X86_64) += chacha-x86_64.o
> -chacha-x86_64-y := chacha-ssse3-x86_64.o chacha_glue.o
> -chacha-x86_64-$(CONFIG_AS_AVX2) += chacha-avx2-x86_64.o
> +chacha-x86_64-y := chacha-avx2-x86_64.o chacha-ssse3-x86_64.o chacha_glue.o
>  chacha-x86_64-$(CONFIG_AS_AVX512) += chacha-avx512vl-x86_64.o
>
>  obj-$(CONFIG_CRYPTO_AES_NI_INTEL) += aesni-intel.o
> @@ -56,8 +55,7 @@ aesni-intel-y := aesni-intel_asm.o aesni-intel_glue.o
>  aesni-intel-$(CONFIG_64BIT) += aesni-intel_avx-x86_64.o aes_ctrby8_avx-x86_64.o
>
>  obj-$(CONFIG_CRYPTO_SHA1_SSSE3) += sha1-ssse3.o
> -sha1-ssse3-y := sha1_ssse3_asm.o sha1_ssse3_glue.o
> -sha1-ssse3-$(CONFIG_AS_AVX2) += sha1_avx2_x86_64_asm.o
> +sha1-ssse3-y := sha1_avx2_x86_64_asm.o sha1_ssse3_asm.o sha1_ssse3_glue.o
>  sha1-ssse3-$(CONFIG_AS_SHA1_NI) += sha1_ni_asm.o
>
>  obj-$(CONFIG_CRYPTO_SHA256_SSSE3) += sha256-ssse3.o
> diff --git a/arch/x86/crypto/aesni-intel_avx-x86_64.S b/arch/x86/crypto/aesni-intel_avx-x86_64.S
> index cc56ee43238b..0cea33295287 100644
> --- a/arch/x86/crypto/aesni-intel_avx-x86_64.S
> +++ b/arch/x86/crypto/aesni-intel_avx-x86_64.S
> @@ -1868,7 +1868,6 @@ key_256_finalize:
>          ret
>  SYM_FUNC_END(aesni_gcm_finalize_avx_gen2)
>
> -#ifdef CONFIG_AS_AVX2
>  ###############################################################################
>  # GHASH_MUL MACRO to implement: Data*HashKey mod (128,127,126,121,0)
>  # Input: A and B (128-bits each, bit-reflected)
> @@ -2836,5 +2835,3 @@ key_256_finalize4:
>          FUNC_RESTORE
>          ret
>  SYM_FUNC_END(aesni_gcm_finalize_avx_gen4)
> -
> -#endif /* CONFIG_AS_AVX2 */
> diff --git a/arch/x86/crypto/aesni-intel_glue.c b/arch/x86/crypto/aesni-intel_glue.c
> index 655ad6bc8810..ad8a7188a2bf 100644
> --- a/arch/x86/crypto/aesni-intel_glue.c
> +++ b/arch/x86/crypto/aesni-intel_glue.c
> @@ -233,7 +233,6 @@ static const struct aesni_gcm_tfm_s aesni_gcm_tfm_avx_gen2 = {
>         .finalize = &aesni_gcm_finalize_avx_gen2,
>  };
>
> -#ifdef CONFIG_AS_AVX2
>  /*
>   * asmlinkage void aesni_gcm_init_avx_gen4()
>   * gcm_data *my_ctx_data, context data
> @@ -276,8 +275,6 @@ static const struct aesni_gcm_tfm_s aesni_gcm_tfm_avx_gen4 = {
>         .finalize = &aesni_gcm_finalize_avx_gen4,
>  };
>
> -#endif
> -
>  static inline struct
>  aesni_rfc4106_gcm_ctx *aesni_rfc4106_gcm_ctx_get(struct crypto_aead *tfm)
>  {
> @@ -706,10 +703,8 @@ static int gcmaes_crypt_by_sg(bool enc, struct aead_request *req,
>         if (!enc)
>                 left -= auth_tag_len;
>
> -#ifdef CONFIG_AS_AVX2
>         if (left < AVX_GEN4_OPTSIZE && gcm_tfm == &aesni_gcm_tfm_avx_gen4)
>                 gcm_tfm = &aesni_gcm_tfm_avx_gen2;
> -#endif
>         if (left < AVX_GEN2_OPTSIZE && gcm_tfm == &aesni_gcm_tfm_avx_gen2)
>                 gcm_tfm = &aesni_gcm_tfm_sse;
>
> @@ -1069,12 +1064,10 @@ static int __init aesni_init(void)
>         if (!x86_match_cpu(aesni_cpu_id))
>                 return -ENODEV;
>  #ifdef CONFIG_X86_64
> -#ifdef CONFIG_AS_AVX2
>         if (boot_cpu_has(X86_FEATURE_AVX2)) {
>                 pr_info("AVX2 version of gcm_enc/dec engaged.\n");
>                 aesni_gcm_tfm = &aesni_gcm_tfm_avx_gen4;
>         } else
> -#endif
>         if (boot_cpu_has(X86_FEATURE_AVX)) {
>                 pr_info("AVX version of gcm_enc/dec engaged.\n");
>                 aesni_gcm_tfm = &aesni_gcm_tfm_avx_gen2;
> diff --git a/arch/x86/crypto/chacha_glue.c b/arch/x86/crypto/chacha_glue.c
> index 68a74953efaf..b412c21ee06e 100644
> --- a/arch/x86/crypto/chacha_glue.c
> +++ b/arch/x86/crypto/chacha_glue.c
> @@ -79,8 +79,7 @@ static void chacha_dosimd(u32 *state, u8 *dst, const u8 *src,
>                 }
>         }
>
> -       if (IS_ENABLED(CONFIG_AS_AVX2) &&
> -           static_branch_likely(&chacha_use_avx2)) {
> +       if (static_branch_likely(&chacha_use_avx2)) {
>                 while (bytes >= CHACHA_BLOCK_SIZE * 8) {
>                         chacha_8block_xor_avx2(state, dst, src, bytes, nrounds);
>                         bytes -= CHACHA_BLOCK_SIZE * 8;
> @@ -288,8 +287,7 @@ static int __init chacha_simd_mod_init(void)
>
>         static_branch_enable(&chacha_use_simd);
>
> -       if (IS_ENABLED(CONFIG_AS_AVX2) &&
> -           boot_cpu_has(X86_FEATURE_AVX) &&
> +       if (boot_cpu_has(X86_FEATURE_AVX) &&
>             boot_cpu_has(X86_FEATURE_AVX2) &&
>             cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM, NULL)) {
>                 static_branch_enable(&chacha_use_avx2);
> diff --git a/arch/x86/crypto/poly1305-x86_64-cryptogams.pl b/arch/x86/crypto/poly1305-x86_64-cryptogams.pl
> index 5bac2d533104..137edcf038cb 100644
> --- a/arch/x86/crypto/poly1305-x86_64-cryptogams.pl
> +++ b/arch/x86/crypto/poly1305-x86_64-cryptogams.pl
> @@ -1514,10 +1514,6 @@ ___
>
>  if ($avx>1) {
>
> -if ($kernel) {
> -       $code .= "#ifdef CONFIG_AS_AVX2\n";
> -}
> -
>  my ($H0,$H1,$H2,$H3,$H4, $MASK, $T4,$T0,$T1,$T2,$T3, $D0,$D1,$D2,$D3,$D4) =
>      map("%ymm$_",(0..15));
>  my $S4=$MASK;
> @@ -2808,10 +2804,6 @@ ___
>  poly1305_blocks_avxN(0);
>  &end_function("poly1305_blocks_avx2");
>
> -if($kernel) {
> -       $code .= "#endif\n";
> -}
> -
>  #######################################################################
>  if ($avx>2) {
>  # On entry we have input length divisible by 64. But since inner loop
> diff --git a/arch/x86/crypto/poly1305_glue.c b/arch/x86/crypto/poly1305_glue.c
> index 4a6226e1d15e..6dfec19f7d57 100644
> --- a/arch/x86/crypto/poly1305_glue.c
> +++ b/arch/x86/crypto/poly1305_glue.c
> @@ -108,7 +108,7 @@ static void poly1305_simd_blocks(void *ctx, const u8 *inp, size_t len,
>                 kernel_fpu_begin();
>                 if (IS_ENABLED(CONFIG_AS_AVX512) && static_branch_likely(&poly1305_use_avx512))
>                         poly1305_blocks_avx512(ctx, inp, bytes, padbit);
> -               else if (IS_ENABLED(CONFIG_AS_AVX2) && static_branch_likely(&poly1305_use_avx2))
> +               else if (static_branch_likely(&poly1305_use_avx2))
>                         poly1305_blocks_avx2(ctx, inp, bytes, padbit);
>                 else
>                         poly1305_blocks_avx(ctx, inp, bytes, padbit);
> @@ -264,8 +264,7 @@ static int __init poly1305_simd_mod_init(void)
>         if (boot_cpu_has(X86_FEATURE_AVX) &&
>             cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM, NULL))
>                 static_branch_enable(&poly1305_use_avx);
> -       if (IS_ENABLED(CONFIG_AS_AVX2) && boot_cpu_has(X86_FEATURE_AVX) &&
> -           boot_cpu_has(X86_FEATURE_AVX2) &&
> +       if (boot_cpu_has(X86_FEATURE_AVX) && boot_cpu_has(X86_FEATURE_AVX2) &&
>             cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM, NULL))
>                 static_branch_enable(&poly1305_use_avx2);
>         if (IS_ENABLED(CONFIG_AS_AVX512) && boot_cpu_has(X86_FEATURE_AVX) &&
> diff --git a/arch/x86/crypto/sha1_ssse3_glue.c b/arch/x86/crypto/sha1_ssse3_glue.c
> index 275b65dd30c9..a801ffc10cbb 100644
> --- a/arch/x86/crypto/sha1_ssse3_glue.c
> +++ b/arch/x86/crypto/sha1_ssse3_glue.c
> @@ -174,7 +174,6 @@ static void unregister_sha1_avx(void)
>                 crypto_unregister_shash(&sha1_avx_alg);
>  }
>
> -#if defined(CONFIG_AS_AVX2)
>  #define SHA1_AVX2_BLOCK_OPTSIZE        4       /* optimal 4*64 bytes of SHA1 blocks */
>
>  asmlinkage void sha1_transform_avx2(struct sha1_state *state,
> @@ -246,11 +245,6 @@ static void unregister_sha1_avx2(void)
>                 crypto_unregister_shash(&sha1_avx2_alg);
>  }
>
> -#else
> -static inline int register_sha1_avx2(void) { return 0; }
> -static inline void unregister_sha1_avx2(void) { }
> -#endif
> -
>  #ifdef CONFIG_AS_SHA1_NI
>  asmlinkage void sha1_ni_transform(struct sha1_state *digest, const u8 *data,
>                                   int rounds);
> diff --git a/arch/x86/crypto/sha256-avx2-asm.S b/arch/x86/crypto/sha256-avx2-asm.S
> index 499d9ec129de..11ff60c29c8b 100644
> --- a/arch/x86/crypto/sha256-avx2-asm.S
> +++ b/arch/x86/crypto/sha256-avx2-asm.S
> @@ -48,7 +48,6 @@
>  # This code schedules 2 blocks at a time, with 4 lanes per block
>  ########################################################################
>
> -#ifdef CONFIG_AS_AVX2
>  #include <linux/linkage.h>
>
>  ## assume buffers not aligned
> @@ -767,5 +766,3 @@ _SHUF_00BA:
>  .align 32
>  _SHUF_DC00:
>         .octa 0x0b0a090803020100FFFFFFFFFFFFFFFF,0x0b0a090803020100FFFFFFFFFFFFFFFF
> -
> -#endif
> diff --git a/arch/x86/crypto/sha256_ssse3_glue.c b/arch/x86/crypto/sha256_ssse3_glue.c
> index 8bdc3be31f64..6394b5fe8db6 100644
> --- a/arch/x86/crypto/sha256_ssse3_glue.c
> +++ b/arch/x86/crypto/sha256_ssse3_glue.c
> @@ -220,7 +220,6 @@ static void unregister_sha256_avx(void)
>                                 ARRAY_SIZE(sha256_avx_algs));
>  }
>
> -#if defined(CONFIG_AS_AVX2)
>  asmlinkage void sha256_transform_rorx(struct sha256_state *state,
>                                       const u8 *data, int blocks);
>
> @@ -295,11 +294,6 @@ static void unregister_sha256_avx2(void)
>                                 ARRAY_SIZE(sha256_avx2_algs));
>  }
>
> -#else
> -static inline int register_sha256_avx2(void) { return 0; }
> -static inline void unregister_sha256_avx2(void) { }
> -#endif
> -
>  #ifdef CONFIG_AS_SHA256_NI
>  asmlinkage void sha256_ni_transform(struct sha256_state *digest,
>                                     const u8 *data, int rounds);
> diff --git a/arch/x86/crypto/sha512-avx2-asm.S b/arch/x86/crypto/sha512-avx2-asm.S
> index 3dd886b14e7d..3a44bdcfd583 100644
> --- a/arch/x86/crypto/sha512-avx2-asm.S
> +++ b/arch/x86/crypto/sha512-avx2-asm.S
> @@ -49,7 +49,6 @@
>  # This code schedules 1 blocks at a time, with 4 lanes per block
>  ########################################################################
>
> -#ifdef CONFIG_AS_AVX2
>  #include <linux/linkage.h>
>
>  .text
> @@ -749,5 +748,3 @@ PSHUFFLE_BYTE_FLIP_MASK:
>  MASK_YMM_LO:
>         .octa 0x00000000000000000000000000000000
>         .octa 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
> -
> -#endif
> diff --git a/arch/x86/crypto/sha512_ssse3_glue.c b/arch/x86/crypto/sha512_ssse3_glue.c
> index 75214982a633..82cc1b3ced1d 100644
> --- a/arch/x86/crypto/sha512_ssse3_glue.c
> +++ b/arch/x86/crypto/sha512_ssse3_glue.c
> @@ -218,7 +218,6 @@ static void unregister_sha512_avx(void)
>                         ARRAY_SIZE(sha512_avx_algs));
>  }
>
> -#if defined(CONFIG_AS_AVX2)
>  asmlinkage void sha512_transform_rorx(struct sha512_state *state,
>                                       const u8 *data, int blocks);
>
> @@ -293,10 +292,6 @@ static void unregister_sha512_avx2(void)
>                 crypto_unregister_shashes(sha512_avx2_algs,
>                         ARRAY_SIZE(sha512_avx2_algs));
>  }
> -#else
> -static inline int register_sha512_avx2(void) { return 0; }
> -static inline void unregister_sha512_avx2(void) { }
> -#endif
>
>  static int __init sha512_ssse3_mod_init(void)
>  {
> diff --git a/crypto/Kconfig b/crypto/Kconfig
> index 49aae167e75c..c24a47406f8f 100644
> --- a/crypto/Kconfig
> +++ b/crypto/Kconfig
> @@ -267,7 +267,7 @@ config CRYPTO_CURVE25519
>
>  config CRYPTO_CURVE25519_X86
>         tristate "x86_64 accelerated Curve25519 scalar multiplication library"
> -       depends on X86 && 64BIT && AS_ADX
> +       depends on X86 && 64BIT
>         select CRYPTO_LIB_CURVE25519_GENERIC
>         select CRYPTO_ARCH_HAVE_LIB_CURVE25519
>
> @@ -465,7 +465,7 @@ config CRYPTO_NHPOLY1305_SSE2
>
>  config CRYPTO_NHPOLY1305_AVX2
>         tristate "NHPoly1305 hash function (x86_64 AVX2 implementation)"
> -       depends on X86 && 64BIT && AS_AVX2
> +       depends on X86 && 64BIT
>         select CRYPTO_NHPOLY1305
>         help
>           AVX2 optimized implementation of the hash function used by the
> @@ -1303,7 +1303,7 @@ config CRYPTO_CAMELLIA_AESNI_AVX_X86_64
>
>  config CRYPTO_CAMELLIA_AESNI_AVX2_X86_64
>         tristate "Camellia cipher algorithm (x86_64/AES-NI/AVX2)"
> -       depends on X86 && 64BIT && AS_AVX2
> +       depends on X86 && 64BIT
>         depends on CRYPTO
>         select CRYPTO_CAMELLIA_AESNI_AVX_X86_64
>         help
> @@ -1573,7 +1573,7 @@ config CRYPTO_SERPENT_AVX_X86_64
>
>  config CRYPTO_SERPENT_AVX2_X86_64
>         tristate "Serpent cipher algorithm (x86_64/AVX2)"
> -       depends on X86 && 64BIT && AS_AVX2
> +       depends on X86 && 64BIT
>         select CRYPTO_SERPENT_AVX_X86_64
>         help
>           Serpent cipher algorithm, by Anderson, Biham & Knudsen.
> diff --git a/lib/raid6/algos.c b/lib/raid6/algos.c
> index b5a02326cfb7..2dc010be793e 100644
> --- a/lib/raid6/algos.c
> +++ b/lib/raid6/algos.c
> @@ -34,10 +34,8 @@ const struct raid6_calls * const raid6_algos[] = {
>         &raid6_avx512x2,
>         &raid6_avx512x1,
>  #endif
> -#ifdef CONFIG_AS_AVX2
>         &raid6_avx2x2,
>         &raid6_avx2x1,
> -#endif
>         &raid6_sse2x2,
>         &raid6_sse2x1,
>         &raid6_sse1x2,
> @@ -51,11 +49,9 @@ const struct raid6_calls * const raid6_algos[] = {
>         &raid6_avx512x2,
>         &raid6_avx512x1,
>  #endif
> -#ifdef CONFIG_AS_AVX2
>         &raid6_avx2x4,
>         &raid6_avx2x2,
>         &raid6_avx2x1,
> -#endif
>         &raid6_sse2x4,
>         &raid6_sse2x2,
>         &raid6_sse2x1,
> @@ -101,9 +97,7 @@ const struct raid6_recov_calls *const raid6_recov_algos[] = {
>  #ifdef CONFIG_AS_AVX512
>         &raid6_recov_avx512,
>  #endif
> -#ifdef CONFIG_AS_AVX2
>         &raid6_recov_avx2,
> -#endif
>         &raid6_recov_ssse3,
>  #endif
>  #ifdef CONFIG_S390
> diff --git a/lib/raid6/avx2.c b/lib/raid6/avx2.c
> index 87184b6da28a..f299476e1d76 100644
> --- a/lib/raid6/avx2.c
> +++ b/lib/raid6/avx2.c
> @@ -13,8 +13,6 @@
>   *
>   */
>
> -#ifdef CONFIG_AS_AVX2
> -
>  #include <linux/raid/pq.h>
>  #include "x86.h"
>
> @@ -470,5 +468,3 @@ const struct raid6_calls raid6_avx2x4 = {
>         1                       /* Has cache hints */
>  };
>  #endif
> -
> -#endif /* CONFIG_AS_AVX2 */
> diff --git a/lib/raid6/recov_avx2.c b/lib/raid6/recov_avx2.c
> index 7a3b5e7f66ee..4e8095403ee2 100644
> --- a/lib/raid6/recov_avx2.c
> +++ b/lib/raid6/recov_avx2.c
> @@ -4,8 +4,6 @@
>   * Author: Jim Kukunas <james.t.kukunas@linux.intel.com>
>   */
>
> -#ifdef CONFIG_AS_AVX2
> -
>  #include <linux/raid/pq.h>
>  #include "x86.h"
>
> @@ -313,7 +311,3 @@ const struct raid6_recov_calls raid6_recov_avx2 = {
>  #endif
>         .priority = 2,
>  };
> -
> -#else
> -#warning "your version of binutils lacks AVX2 support"
> -#endif
> diff --git a/lib/raid6/test/Makefile b/lib/raid6/test/Makefile
> index 60021319ac78..a4c7cd74cff5 100644
> --- a/lib/raid6/test/Makefile
> +++ b/lib/raid6/test/Makefile
> @@ -35,9 +35,6 @@ 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 += -DCONFIG_X86
> -        CFLAGS += $(shell echo "vpbroadcastb %xmm0, %ymm1" |   \
> -                    gcc -c -x assembler - >/dev/null 2>&1 &&   \
> -                    rm ./-.o && echo -DCONFIG_AS_AVX2=1)
>         CFLAGS += $(shell echo "vpmovm2b %k1, %zmm5" |          \
>                     gcc -c -x assembler - >/dev/null 2>&1 &&    \
>                     rm ./-.o && echo -DCONFIG_AS_AVX512=1)
> diff --git a/net/netfilter/Makefile b/net/netfilter/Makefile
> index 292e71dc7ba4..cd0d6ad48650 100644
> --- a/net/netfilter/Makefile
> +++ b/net/netfilter/Makefile
> @@ -83,10 +83,8 @@ nf_tables-objs := nf_tables_core.o nf_tables_api.o nft_chain_filter.o \
>                   nft_set_pipapo.o
>
>  ifdef CONFIG_X86_64
> -ifneq (,$(findstring -DCONFIG_AS_AVX2=1,$(KBUILD_CFLAGS)))
>  nf_tables-objs += nft_set_pipapo_avx2.o
>  endif
> -endif
>
>  obj-$(CONFIG_NF_TABLES)                += nf_tables.o
>  obj-$(CONFIG_NFT_COMPAT)       += nft_compat.o
> diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
> index 5659d67bd1bd..05090aae36cc 100644
> --- a/net/netfilter/nf_tables_api.c
> +++ b/net/netfilter/nf_tables_api.c
> @@ -3290,7 +3290,7 @@ static const struct nft_set_type *nft_set_types[] = {
>         &nft_set_rhash_type,
>         &nft_set_bitmap_type,
>         &nft_set_rbtree_type,
> -#if defined(CONFIG_X86_64) && defined(CONFIG_AS_AVX2)
> +#if defined(CONFIG_X86_64)
>         &nft_set_pipapo_avx2_type,
>  #endif
>         &nft_set_pipapo_type,
> diff --git a/net/netfilter/nft_set_pipapo.c b/net/netfilter/nft_set_pipapo.c
> index 87aabf651cfe..459a4758d6fa 100644
> --- a/net/netfilter/nft_set_pipapo.c
> +++ b/net/netfilter/nft_set_pipapo.c
> @@ -2201,7 +2201,7 @@ const struct nft_set_type nft_set_pipapo_type = {
>         },
>  };
>
> -#if defined(CONFIG_X86_64) && defined(CONFIG_AS_AVX2)
> +#if defined(CONFIG_X86_64)
>  const struct nft_set_type nft_set_pipapo_avx2_type = {
>         .features       = NFT_SET_INTERVAL | NFT_SET_MAP | NFT_SET_OBJECT |
>                           NFT_SET_TIMEOUT,
> diff --git a/net/netfilter/nft_set_pipapo_avx2.h b/net/netfilter/nft_set_pipapo_avx2.h
> index 396caf7bfca8..8467337c5f4c 100644
> --- a/net/netfilter/nft_set_pipapo_avx2.h
> +++ b/net/netfilter/nft_set_pipapo_avx2.h
> @@ -1,7 +1,6 @@
>  /* SPDX-License-Identifier: GPL-2.0-only */
>  #ifndef _NFT_SET_PIPAPO_AVX2_H
>
> -#ifdef CONFIG_AS_AVX2
>  #include <asm/fpu/xstate.h>
>  #define NFT_PIPAPO_ALIGN       (XSAVE_YMM_SIZE / BITS_PER_BYTE)
>
> @@ -9,6 +8,4 @@ bool nft_pipapo_avx2_lookup(const struct net *net, const struct nft_set *set,
>                             const u32 *key, const struct nft_set_ext **ext);
>  bool nft_pipapo_avx2_estimate(const struct nft_set_desc *desc, u32 features,
>                               struct nft_set_estimate *est);
> -#endif /* CONFIG_AS_AVX2 */
> -
>  #endif /* _NFT_SET_PIPAPO_AVX2_H */
> --
> 2.26.0
>


-- 
Thanks,
~Nick Desaulniers