x86: update AS_* macros to binutils >=2.23, supporting ADX and AVX2

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>
Acked-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

net/netfilter/Makefile

@@ -83,7 +83,7 @@ nf_tables-objs := nf_tables_core.o nf_tables_api.o nft_chain_filter.o \
 		  nft_set_pipapo.o
 
 ifdef CONFIG_X86_64
-ifdef CONFIG_AS_AVX2
+ifndef CONFIG_UML
 nf_tables-objs += nft_set_pipapo_avx2.o
 endif
 endif

net/netfilter/nf_tables_api.c

@@ -3291,7 +3291,7 @@ 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) && !defined(CONFIG_UML)
 	&nft_set_pipapo_avx2_type,
 #endif
 	&nft_set_pipapo_type,

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) && !defined(CONFIG_UML)
 const struct nft_set_type nft_set_pipapo_avx2_type = {
 	.features	= NFT_SET_INTERVAL | NFT_SET_MAP | NFT_SET_OBJECT |
 			  NFT_SET_TIMEOUT,

net/netfilter/nft_set_pipapo_avx2.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 #ifndef _NFT_SET_PIPAPO_AVX2_H
 
-#ifdef CONFIG_AS_AVX2
+#if defined(CONFIG_X86_64) && !defined(CONFIG_UML)
 #include <asm/fpu/xstate.h>
 #define NFT_PIPAPO_ALIGN	(XSAVE_YMM_SIZE / BITS_PER_BYTE)
 
@@ -9,6 +9,6 @@ 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 /* defined(CONFIG_X86_64) && !defined(CONFIG_UML) */
 
 #endif /* _NFT_SET_PIPAPO_AVX2_H */