Merge tag 'x86_cleanups_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 cleanups from Borislav Petkov:

- Simplify inline asm flag output operands now that the minimum
compiler version supports the =@ccCOND syntax

- Remove a bunch of AS_* Kconfig symbols which detect assembler support
for various instruction mnemonics now that the minimum assembler
version supports them all

- The usual cleanups all over the place

* tag 'x86_cleanups_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/asm: Remove code depending on __GCC_ASM_FLAG_OUTPUTS__
x86/sgx: Use ENCLS mnemonic in <kernel/cpu/sgx/encls.h>
x86/mtrr: Remove license boilerplate text with bad FSF address
x86/asm: Use RDPKRU and WRPKRU mnemonics in <asm/special_insns.h>
x86/idle: Use MONITORX and MWAITX mnemonics in <asm/mwait.h>
x86/entry/fred: Push __KERNEL_CS directly
x86/kconfig: Remove CONFIG_AS_AVX512
crypto: x86 - Remove CONFIG_AS_VPCLMULQDQ
crypto: X86 - Remove CONFIG_AS_VAES
crypto: x86 - Remove CONFIG_AS_GFNI
x86/kconfig: Drop unused and needless config X86_64_SMP

arch/x86/Kconfig

···
 	def_bool y
 	depends on INTEL_IOMMU && ACPI
 
-config X86_64_SMP
-	def_bool y
-	depends on X86_64 && SMP
-
 config ARCH_SUPPORTS_UPROBES
 	def_bool y
 

arch/x86/Kconfig.assembler

···
 # SPDX-License-Identifier: GPL-2.0
 # Copyright (C) 2020 Jason A. Donenfeld <[e-mail]>. All Rights Reserved.
 
-config AS_AVX512
-	def_bool $(as-instr,vpmovm2b %k1$(comma)%zmm5)
-	help
-	  Supported by binutils >= 2.25 and LLVM integrated assembler
-
-config AS_GFNI
-	def_bool $(as-instr,vgf2p8mulb %xmm0$(comma)%xmm1$(comma)%xmm2)
-	help
-	  Supported by binutils >= 2.30 and LLVM integrated assembler
-
-config AS_VAES
-	def_bool $(as-instr,vaesenc %ymm0$(comma)%ymm1$(comma)%ymm2)
-	help
-	  Supported by binutils >= 2.30 and LLVM integrated assembler
-
-config AS_VPCLMULQDQ
-	def_bool $(as-instr,vpclmulqdq \$0x10$(comma)%ymm0$(comma)%ymm1$(comma)%ymm2)
-	help
-	  Supported by binutils >= 2.30 and LLVM integrated assembler
-
 config AS_WRUSS
 	def_bool $(as-instr64,wrussq %rax$(comma)(%rbx))
 	help

arch/x86/boot/bitops.h

···
 	bool v;
 	const u32 *p = addr;
 
-	asm("btl %2,%1" CC_SET(c) : CC_OUT(c) (v) : "m" (*p), "Ir" (nr));
+	asm("btl %2,%1" : "=@ccc" (v) : "m" (*p), "Ir" (nr));
 	return v;
 }
 

arch/x86/boot/boot.h

···
 static inline bool memcmp_fs(const void *s1, addr_t s2, size_t len)
 {
 	bool diff;
-	asm volatile("fs repe cmpsb" CC_SET(nz)
-		     : CC_OUT(nz) (diff), "+D" (s1), "+S" (s2), "+c" (len));
+	asm volatile("fs repe cmpsb"
+		     : "=@ccnz" (diff), "+D" (s1), "+S" (s2), "+c" (len));
 	return diff;
 }
 static inline bool memcmp_gs(const void *s1, addr_t s2, size_t len)
 {
 	bool diff;
-	asm volatile("gs repe cmpsb" CC_SET(nz)
-		     : CC_OUT(nz) (diff), "+D" (s1), "+S" (s2), "+c" (len));
+	asm volatile("gs repe cmpsb"
+		     : "=@ccnz" (diff), "+D" (s1), "+S" (s2), "+c" (len));
 	return diff;
 }
 

arch/x86/boot/string.c

···
 int memcmp(const void *s1, const void *s2, size_t len)
 {
 	bool diff;
-	asm("repe cmpsb" CC_SET(nz)
-	    : CC_OUT(nz) (diff), "+D" (s1), "+S" (s2), "+c" (len));
+	asm("repe cmpsb"
+	    : "=@ccnz" (diff), "+D" (s1), "+S" (s2), "+c" (len));
 	return diff;
 }
 

arch/x86/crypto/Kconfig

···
 
 config CRYPTO_ARIA_GFNI_AVX512_X86_64
 	tristate "Ciphers: ARIA with modes: ECB, CTR (AVX512/GFNI)"
-	depends on 64BIT && AS_GFNI
+	depends on 64BIT
 	select CRYPTO_SKCIPHER
 	select CRYPTO_ALGAPI
 	select CRYPTO_ARIA

arch/x86/crypto/Makefile

···
 aesni-intel-y := aesni-intel_asm.o aesni-intel_glue.o
 aesni-intel-$(CONFIG_64BIT) += aes-ctr-avx-x86_64.o \
 			       aes-gcm-aesni-x86_64.o \
-			       aes-xts-avx-x86_64.o
-ifeq ($(CONFIG_AS_VAES)$(CONFIG_AS_VPCLMULQDQ),yy)
-aesni-intel-$(CONFIG_64BIT) += aes-gcm-avx10-x86_64.o
-endif
+			       aes-xts-avx-x86_64.o \
+			       aes-gcm-avx10-x86_64.o
 
 obj-$(CONFIG_CRYPTO_GHASH_CLMUL_NI_INTEL) += ghash-clmulni-intel.o
 ghash-clmulni-intel-y := ghash-clmulni-intel_asm.o ghash-clmulni-intel_glue.o

arch/x86/crypto/aes-ctr-avx-x86_64.S

···
 	_aes_ctr_crypt	1
 SYM_FUNC_END(aes_xctr_crypt_aesni_avx)
 
-#if defined(CONFIG_AS_VAES) && defined(CONFIG_AS_VPCLMULQDQ)
 .set	VL, 32
 .set	USE_AVX512, 0
 SYM_TYPED_FUNC_START(aes_ctr64_crypt_vaes_avx2)
···
 SYM_TYPED_FUNC_START(aes_xctr_crypt_vaes_avx512)
 	_aes_ctr_crypt	1
 SYM_FUNC_END(aes_xctr_crypt_vaes_avx512)
-#endif // CONFIG_AS_VAES && CONFIG_AS_VPCLMULQDQ

arch/x86/crypto/aes-xts-avx-x86_64.S

···
 	_aes_xts_crypt	0
 SYM_FUNC_END(aes_xts_decrypt_aesni_avx)
 
-#if defined(CONFIG_AS_VAES) && defined(CONFIG_AS_VPCLMULQDQ)
 .set	VL, 32
 .set	USE_AVX512, 0
 SYM_TYPED_FUNC_START(aes_xts_encrypt_vaes_avx2)
···
 SYM_TYPED_FUNC_START(aes_xts_decrypt_vaes_avx512)
 	_aes_xts_crypt	0
 SYM_FUNC_END(aes_xts_decrypt_vaes_avx512)
-#endif /* CONFIG_AS_VAES && CONFIG_AS_VPCLMULQDQ */

arch/x86/crypto/aesni-intel_glue.c

···
 }}
 
 DEFINE_AVX_SKCIPHER_ALGS(aesni_avx, "aesni-avx", 500);
-#if defined(CONFIG_AS_VAES) && defined(CONFIG_AS_VPCLMULQDQ)
 DEFINE_AVX_SKCIPHER_ALGS(vaes_avx2, "vaes-avx2", 600);
 DEFINE_AVX_SKCIPHER_ALGS(vaes_avx512, "vaes-avx512", 800);
-#endif
 
 /* The common part of the x86_64 AES-GCM key struct */
 struct aes_gcm_key {
···
 #define FLAG_RFC4106	BIT(0)
 #define FLAG_ENC	BIT(1)
 #define FLAG_AVX	BIT(2)
-#if defined(CONFIG_AS_VAES) && defined(CONFIG_AS_VPCLMULQDQ)
-#  define FLAG_AVX10_256	BIT(3)
-#  define FLAG_AVX10_512	BIT(4)
-#else
-   /*
-    * This should cause all calls to the AVX10 assembly functions to be
-    * optimized out, avoiding the need to ifdef each call individually.
-    */
-#  define FLAG_AVX10_256	0
-#  define FLAG_AVX10_512	0
-#endif
+#define FLAG_AVX10_256	BIT(3)
+#define FLAG_AVX10_512	BIT(4)
 
 static inline struct aes_gcm_key *
 aes_gcm_key_get(struct crypto_aead *tfm, int flags)
···
 		"generic-gcm-aesni-avx", "rfc4106-gcm-aesni-avx",
 		AES_GCM_KEY_AESNI_SIZE, 500);
 
-#if defined(CONFIG_AS_VAES) && defined(CONFIG_AS_VPCLMULQDQ)
 /* aes_gcm_algs_vaes_avx10_256 */
 DEFINE_GCM_ALGS(vaes_avx10_256, FLAG_AVX10_256,
 		"generic-gcm-vaes-avx10_256", "rfc4106-gcm-vaes-avx10_256",
···
 DEFINE_GCM_ALGS(vaes_avx10_512, FLAG_AVX10_512,
 		"generic-gcm-vaes-avx10_512", "rfc4106-gcm-vaes-avx10_512",
 		AES_GCM_KEY_AVX10_SIZE, 800);
-#endif /* CONFIG_AS_VAES && CONFIG_AS_VPCLMULQDQ */
 
 static int __init register_avx_algs(void)
 {
···
 	 * Similarly, the assembler support was added at about the same time.
 	 * For simplicity, just always check for VAES and VPCLMULQDQ together.
 	 */
-#if defined(CONFIG_AS_VAES) && defined(CONFIG_AS_VPCLMULQDQ)
 	if (!boot_cpu_has(X86_FEATURE_AVX2) ||
 	    !boot_cpu_has(X86_FEATURE_VAES) ||
 	    !boot_cpu_has(X86_FEATURE_VPCLMULQDQ) ||
···
 				    ARRAY_SIZE(aes_gcm_algs_vaes_avx10_512));
 	if (err)
 		return err;
-#endif /* CONFIG_AS_VAES && CONFIG_AS_VPCLMULQDQ */
+
 	return 0;
 }
 
···
 {
 	unregister_skciphers(skcipher_algs_aesni_avx);
 	unregister_aeads(aes_gcm_algs_aesni_avx);
-#if defined(CONFIG_AS_VAES) && defined(CONFIG_AS_VPCLMULQDQ)
 	unregister_skciphers(skcipher_algs_vaes_avx2);
 	unregister_skciphers(skcipher_algs_vaes_avx512);
 	unregister_aeads(aes_gcm_algs_vaes_avx10_256);
 	unregister_aeads(aes_gcm_algs_vaes_avx10_512);
-#endif
 }
 #else /* CONFIG_X86_64 */
 static struct aead_alg aes_gcm_algs_aesni[0];

arch/x86/crypto/aria-aesni-avx-asm_64.S

···
 	vpshufb t1, t0, t2;				\
 	vpxor t2, x7, x7;
 
-#ifdef CONFIG_AS_GFNI
 #define aria_sbox_8way_gfni(x0, x1, x2, x3,		\
 			    x4, x5, x6, x7,		\
 			    t0, t1, t2, t3,		\
···
 	vgf2p8affineqb $(tf_x2_const), t4, x7, x7;	\
 	vgf2p8affineinvqb $0, t2, x3, x3;		\
 	vgf2p8affineinvqb $0, t2, x7, x7
-
-#endif /* CONFIG_AS_GFNI */
 
 #define aria_sbox_8way(x0, x1, x2, x3,            	\
 		       x4, x5, x6, x7,			\
···
 			     y4, y5, y6, y7,		\
 			     mem_tmp, 8);
 
-#ifdef CONFIG_AS_GFNI
 #define aria_fe_gfni(x0, x1, x2, x3,			\
 		     x4, x5, x6, x7,			\
 		     y0, y1, y2, y3,			\
···
 			     y4, y5, y6, y7,		\
 			     mem_tmp, 8);
 
-#endif /* CONFIG_AS_GFNI */
-
 /* NB: section is mergeable, all elements must be aligned 16-byte blocks */
 .section	.rodata.cst16, "aM", @progbits, 16
 .align 16
···
 .Ltf_hi__x2__and__fwd_aff:
 	.octa 0x3F893781E95FE1576CDA64D2BA0CB204
 
-#ifdef CONFIG_AS_GFNI
 /* AES affine: */
 #define tf_aff_const BV8(1, 1, 0, 0, 0, 1, 1, 0)
 .Ltf_aff_bitmatrix:
···
 		    BV8(0, 0, 0, 0, 0, 1, 0, 0),
 		    BV8(0, 0, 0, 0, 0, 0, 1, 0),
 		    BV8(0, 0, 0, 0, 0, 0, 0, 1))
-#endif /* CONFIG_AS_GFNI */
 
 /* 4-bit mask */
 .section	.rodata.cst4.L0f0f0f0f, "aM", @progbits, 4
···
 	RET;
 SYM_FUNC_END(aria_aesni_avx_ctr_crypt_16way)
 
-#ifdef CONFIG_AS_GFNI
 SYM_FUNC_START_LOCAL(__aria_aesni_avx_gfni_crypt_16way)
 	/* input:
 	*      %r9: rk
···
 	FRAME_END
 	RET;
 SYM_FUNC_END(aria_aesni_avx_gfni_ctr_crypt_16way)
-#endif /* CONFIG_AS_GFNI */

arch/x86/crypto/aria-aesni-avx2-asm_64.S

···
 	vpbroadcastb ((round * 16) + idx + 4)(rk), t0;	\
 	vpxor t0, x7, x7;
 
-#ifdef CONFIG_AS_GFNI
 #define aria_sbox_8way_gfni(x0, x1, x2, x3,		\
 			    x4, x5, x6, x7,		\
 			    t0, t1, t2, t3,		\
···
 	vgf2p8affineinvqb $0, t2, x3, x3;		\
 	vgf2p8affineinvqb $0, t2, x7, x7
 
-#endif /* CONFIG_AS_GFNI */
 #define aria_sbox_8way(x0, x1, x2, x3,			\
 		       x4, x5, x6, x7,			\
 		       t0, t1, t2, t3,			\
···
 	aria_load_state_8way(y0, y1, y2, y3,		\
 			     y4, y5, y6, y7,		\
 			     mem_tmp, 8);
-#ifdef CONFIG_AS_GFNI
+
 #define aria_fe_gfni(x0, x1, x2, x3,			\
 		     x4, x5, x6, x7,			\
 		     y0, y1, y2, y3,			\
···
 	aria_load_state_8way(y0, y1, y2, y3,		\
 			     y4, y5, y6, y7,		\
 			     mem_tmp, 8);
-#endif /* CONFIG_AS_GFNI */
 
 .section        .rodata.cst32.shufb_16x16b, "aM", @progbits, 32
 .align 32
···
 .Ltf_hi__x2__and__fwd_aff:
 	.octa 0x3F893781E95FE1576CDA64D2BA0CB204
 
-#ifdef CONFIG_AS_GFNI
 .section	.rodata.cst8, "aM", @progbits, 8
 .align 8
 /* AES affine: */
···
 		    BV8(0, 0, 0, 0, 0, 1, 0, 0),
 		    BV8(0, 0, 0, 0, 0, 0, 1, 0),
 		    BV8(0, 0, 0, 0, 0, 0, 0, 1))
-
-#endif /* CONFIG_AS_GFNI */
 
 /* 4-bit mask */
 .section	.rodata.cst4.L0f0f0f0f, "aM", @progbits, 4
···
 	RET;
 SYM_FUNC_END(aria_aesni_avx2_ctr_crypt_32way)
 
-#ifdef CONFIG_AS_GFNI
 SYM_FUNC_START_LOCAL(__aria_aesni_avx2_gfni_crypt_32way)
 	/* input:
 	 *      %r9: rk
···
 	FRAME_END
 	RET;
 SYM_FUNC_END(aria_aesni_avx2_gfni_ctr_crypt_32way)
-#endif /* CONFIG_AS_GFNI */

arch/x86/crypto/aria_aesni_avx2_glue.c

···
 						const u8 *src,
 						u8 *keystream, u8 *iv);
 EXPORT_SYMBOL_GPL(aria_aesni_avx2_ctr_crypt_32way);
-#ifdef CONFIG_AS_GFNI
 asmlinkage void aria_aesni_avx2_gfni_encrypt_32way(const void *ctx, u8 *dst,
 						   const u8 *src);
 EXPORT_SYMBOL_GPL(aria_aesni_avx2_gfni_encrypt_32way);
···
 						     const u8 *src,
 						     u8 *keystream, u8 *iv);
 EXPORT_SYMBOL_GPL(aria_aesni_avx2_gfni_ctr_crypt_32way);
-#endif /* CONFIG_AS_GFNI */
 
 static struct aria_avx_ops aria_ops;
 
···
 		return -ENODEV;
 	}
 
-	if (boot_cpu_has(X86_FEATURE_GFNI) && IS_ENABLED(CONFIG_AS_GFNI)) {
+	if (boot_cpu_has(X86_FEATURE_GFNI)) {
 		aria_ops.aria_encrypt_16way = aria_aesni_avx_gfni_encrypt_16way;
 		aria_ops.aria_decrypt_16way = aria_aesni_avx_gfni_decrypt_16way;
 		aria_ops.aria_ctr_crypt_16way = aria_aesni_avx_gfni_ctr_crypt_16way;

arch/x86/crypto/aria_aesni_avx_glue.c

···
 					       const u8 *src,
 					       u8 *keystream, u8 *iv);
 EXPORT_SYMBOL_GPL(aria_aesni_avx_ctr_crypt_16way);
-#ifdef CONFIG_AS_GFNI
 asmlinkage void aria_aesni_avx_gfni_encrypt_16way(const void *ctx, u8 *dst,
 						  const u8 *src);
 EXPORT_SYMBOL_GPL(aria_aesni_avx_gfni_encrypt_16way);
···
 						    const u8 *src,
 						    u8 *keystream, u8 *iv);
 EXPORT_SYMBOL_GPL(aria_aesni_avx_gfni_ctr_crypt_16way);
-#endif /* CONFIG_AS_GFNI */
 
 static struct aria_avx_ops aria_ops;
 
···
 		return -ENODEV;
 	}
 
-	if (boot_cpu_has(X86_FEATURE_GFNI) && IS_ENABLED(CONFIG_AS_GFNI)) {
+	if (boot_cpu_has(X86_FEATURE_GFNI)) {
 		aria_ops.aria_encrypt_16way = aria_aesni_avx_gfni_encrypt_16way;
 		aria_ops.aria_decrypt_16way = aria_aesni_avx_gfni_decrypt_16way;
 		aria_ops.aria_ctr_crypt_16way = aria_aesni_avx_gfni_ctr_crypt_16way;

arch/x86/entry/entry_64_fred.S

···
 	push %rdi			/* fred_ss handed in by the caller */
 	push %rbp
 	pushf
-	mov $__KERNEL_CS, %rax
-	push %rax
+	push $__KERNEL_CS
 
 	/*
 	 * Unlike the IDT event delivery, FRED _always_ pushes an error code

arch/x86/include/asm/archrandom.h

···
 	unsigned int retry = RDRAND_RETRY_LOOPS;
 	do {
 		asm volatile("rdrand %[out]"
-			     CC_SET(c)
-			     : CC_OUT(c) (ok), [out] "=r" (*v));
+			     : "=@ccc" (ok), [out] "=r" (*v));
 		if (ok)
 			return true;
 	} while (--retry);
···
 {
 	bool ok;
 	asm volatile("rdseed %[out]"
-		     CC_SET(c)
-		     : CC_OUT(c) (ok), [out] "=r" (*v));
+		     : "=@ccc" (ok), [out] "=r" (*v));
 	return ok;
 }
 

arch/x86/include/asm/asm.h

···
 }
 #endif
 
-/*
- * Macros to generate condition code outputs from inline assembly,
- * The output operand must be type "bool".
- */
-#ifdef __GCC_ASM_FLAG_OUTPUTS__
-# define CC_SET(c) "\n\t/* output condition code " #c "*/\n"
-# define CC_OUT(c) "=@cc" #c
-#else
-# define CC_SET(c) "\n\tset" #c " %[_cc_" #c "]\n"
-# define CC_OUT(c) [_cc_ ## c] "=qm"
-#endif
-
 #ifdef __KERNEL__
 
 # include <asm/extable_fixup_types.h>

arch/x86/include/asm/bitops.h

···
 {
 	bool negative;
 	asm_inline volatile(LOCK_PREFIX "xorb %2,%1"
-		CC_SET(s)
-		: CC_OUT(s) (negative), WBYTE_ADDR(addr)
+		: "=@ccs" (negative), WBYTE_ADDR(addr)
 		: "iq" ((char)mask) : "memory");
 	return negative;
 }
···
 	bool oldbit;
 
 	asm(__ASM_SIZE(bts) " %2,%1"
-	    CC_SET(c)
-	    : CC_OUT(c) (oldbit)
+	    : "=@ccc" (oldbit)
 	    : ADDR, "Ir" (nr) : "memory");
 	return oldbit;
 }
···
 	bool oldbit;
 
 	asm volatile(__ASM_SIZE(btr) " %2,%1"
-		     CC_SET(c)
-		     : CC_OUT(c) (oldbit)
+		     : "=@ccc" (oldbit)
 		     : ADDR, "Ir" (nr) : "memory");
 	return oldbit;
 }
···
 	bool oldbit;
 
 	asm volatile(__ASM_SIZE(btc) " %2,%1"
-		     CC_SET(c)
-		     : CC_OUT(c) (oldbit)
+		     : "=@ccc" (oldbit)
 		     : ADDR, "Ir" (nr) : "memory");
 
 	return oldbit;
···
 	bool oldbit;
 
 	asm volatile("testb %2,%1"
-		     CC_SET(nz)
-		     : CC_OUT(nz) (oldbit)
+		     : "=@ccnz" (oldbit)
 		     : "m" (((unsigned char *)addr)[nr >> 3]),
 		       "i" (1 << (nr & 7))
 		     :"memory");
···
 	bool oldbit;
 
 	asm volatile(__ASM_SIZE(bt) " %2,%1"
-		     CC_SET(c)
-		     : CC_OUT(c) (oldbit)
+		     : "=@ccc" (oldbit)
 		     : "m" (*(unsigned long *)addr), "Ir" (nr) : "memory");
 
 	return oldbit;

arch/x86/include/asm/cmpxchg.h

···
 	{								\
 		volatile u8 *__ptr = (volatile u8 *)(_ptr);		\
 		asm_inline volatile(lock "cmpxchgb %[new], %[ptr]"	\
-			     CC_SET(z)					\
-			     : CC_OUT(z) (success),			\
+			     : "=@ccz" (success),			\
 			       [ptr] "+m" (*__ptr),			\
 			       [old] "+a" (__old)			\
 			     : [new] "q" (__new)			\
···
 	{								\
 		volatile u16 *__ptr = (volatile u16 *)(_ptr);		\
 		asm_inline volatile(lock "cmpxchgw %[new], %[ptr]"	\
-			     CC_SET(z)					\
-			     : CC_OUT(z) (success),			\
+			     : "=@ccz" (success),			\
 			       [ptr] "+m" (*__ptr),			\
 			       [old] "+a" (__old)			\
 			     : [new] "r" (__new)			\
···
 	{								\
 		volatile u32 *__ptr = (volatile u32 *)(_ptr);		\
 		asm_inline volatile(lock "cmpxchgl %[new], %[ptr]"	\
-			     CC_SET(z)					\
-			     : CC_OUT(z) (success),			\
+			     : "=@ccz" (success),			\
 			       [ptr] "+m" (*__ptr),			\
 			       [old] "+a" (__old)			\
 			     : [new] "r" (__new)			\
···
 	{								\
 		volatile u64 *__ptr = (volatile u64 *)(_ptr);		\
 		asm_inline volatile(lock "cmpxchgq %[new], %[ptr]"	\
-			     CC_SET(z)					\
-			     : CC_OUT(z) (success),			\
+			     : "=@ccz" (success),			\
 			       [ptr] "+m" (*__ptr),			\
 			       [old] "+a" (__old)			\
 			     : [new] "r" (__new)			\

arch/x86/include/asm/cmpxchg_32.h

···
 	bool ret;							\
 									\
 	asm_inline volatile(_lock "cmpxchg8b %[ptr]"			\
-		     CC_SET(e)						\
-		     : CC_OUT(e) (ret),					\
+		     : "=@ccz" (ret),					\
 		       [ptr] "+m" (*(_ptr)),				\
 		       "+a" (o.low), "+d" (o.high)			\
 		     : "b" (n.low), "c" (n.high)			\
···
 		ALTERNATIVE(_lock_loc					\
 			    "call cmpxchg8b_emu",			\
 			    _lock "cmpxchg8b %a[ptr]", X86_FEATURE_CX8) \
-		CC_SET(e)						\
-		: ALT_OUTPUT_SP(CC_OUT(e) (ret),			\
+		: ALT_OUTPUT_SP("=@ccz" (ret),				\
 				"+a" (o.low), "+d" (o.high))		\
 		: "b" (n.low), "c" (n.high),				\
 		  [ptr] "S" (_ptr)					\

arch/x86/include/asm/cmpxchg_64.h

···
 	bool ret;							\
 									\
 	asm_inline volatile(_lock "cmpxchg16b %[ptr]"			\
-		     CC_SET(e)						\
-		     : CC_OUT(e) (ret),					\
+		     : "=@ccz" (ret),					\
 		       [ptr] "+m" (*(_ptr)),				\
 		       "+a" (o.low), "+d" (o.high)			\
 		     : "b" (n.low), "c" (n.high)			\

arch/x86/include/asm/mtrr.h

···
+/* SPDX-License-Identifier: LGPL-2.0+ */
 /*  Generic MTRR (Memory Type Range Register) ioctls.
 
     Copyright (C) 1997-1999  Richard Gooch
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Library General Public
-    License as published by the Free Software Foundation; either
-    version 2 of the License, or (at your option) any later version.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Library General Public License for more details.
-
-    You should have received a copy of the GNU Library General Public
-    License along with this library; if not, write to the Free
-    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
     Richard Gooch may be reached by email at  [e-mail]
     The postal address is:

arch/x86/include/asm/mwait.h

···
 
 static __always_inline void __monitorx(const void *eax, u32 ecx, u32 edx)
 {
-	/* "monitorx %eax, %ecx, %edx" */
-	asm volatile(".byte 0x0f, 0x01, 0xfa"
-		     :: "a" (eax), "c" (ecx), "d"(edx));
+	asm volatile("monitorx" :: "a" (eax), "c" (ecx), "d"(edx));
 }
 
 static __always_inline void __mwait(u32 eax, u32 ecx)
···
 {
 	/* No need for TSA buffer clearing on AMD */
 
-	/* "mwaitx %eax, %ebx, %ecx" */
-	asm volatile(".byte 0x0f, 0x01, 0xfb"
-		     :: "a" (eax), "b" (ebx), "c" (ecx));
+	asm volatile("mwaitx" :: "a" (eax), "b" (ebx), "c" (ecx));
 }
 
 /*

arch/x86/include/asm/percpu.h

···
 									\
 	asm qual (__pcpu_op_##size("cmpxchg") "%[nval], "		\
 		  __percpu_arg([var])					\
-		  CC_SET(z)						\
-		  : CC_OUT(z) (success),				\
+		  : "=@ccz" (success),					\
 		    [oval] "+a" (pco_old__),				\
 		    [var] "+m" (__my_cpu_var(_var))			\
 		  : [nval] __pcpu_reg_##size(, pco_new__)		\
···
 	asm_inline qual (						\
 		ALTERNATIVE("call this_cpu_cmpxchg8b_emu",		\
 			    "cmpxchg8b " __percpu_arg([var]), X86_FEATURE_CX8) \
-		CC_SET(z)						\
-		: ALT_OUTPUT_SP(CC_OUT(z) (success),			\
+		: ALT_OUTPUT_SP("=@ccz" (success),			\
 				[var] "+m" (__my_cpu_var(_var)),	\
 				"+a" (old__.low), "+d" (old__.high))	\
 		: "b" (new__.low), "c" (new__.high),			\
···
 	asm_inline qual (						\
 		ALTERNATIVE("call this_cpu_cmpxchg16b_emu",		\
 			    "cmpxchg16b " __percpu_arg([var]), X86_FEATURE_CX16) \
-		CC_SET(z)						\
-		: ALT_OUTPUT_SP(CC_OUT(z) (success),			\
+		: ALT_OUTPUT_SP("=@ccz" (success),			\
 				[var] "+m" (__my_cpu_var(_var)),	\
 				"+a" (old__.low), "+d" (old__.high))	\
 		: "b" (new__.low), "c" (new__.high),			\
···
 	bool oldbit;							\
 									\
 	asm volatile("btl %[nr], " __percpu_arg([var])			\
-		     CC_SET(c)						\
-		     : CC_OUT(c) (oldbit)				\
+		     : "=@ccc" (oldbit)					\
 		     : [var] "m" (__my_cpu_var(_var)),			\
 		       [nr] "rI" (_nr));				\
 	oldbit;								\

arch/x86/include/asm/rmwcc.h

···
 
 #define __CLOBBERS_MEM(clb...)	"memory", ## clb
 
-#ifndef __GCC_ASM_FLAG_OUTPUTS__
-
-/* Use asm goto */
-
-#define __GEN_RMWcc(fullop, _var, cc, clobbers, ...)			\
-({									\
-	bool c = false;							\
-	asm goto (fullop "; j" #cc " %l[cc_label]"		\
-			: : [var] "m" (_var), ## __VA_ARGS__		\
-			: clobbers : cc_label);				\
-	if (0) {							\
-cc_label:	c = true;						\
-	}								\
-	c;								\
-})
-
-#else /* defined(__GCC_ASM_FLAG_OUTPUTS__) */
-
-/* Use flags output or a set instruction */
-
 #define __GEN_RMWcc(fullop, _var, cc, clobbers, ...)			\
 ({									\
 	bool c;								\
-	asm_inline volatile (fullop CC_SET(cc)				\
-			: [var] "+m" (_var), CC_OUT(cc) (c)		\
+	asm_inline volatile (fullop					\
+			: [var] "+m" (_var), "=@cc" #cc (c)		\
 			: __VA_ARGS__ : clobbers);			\
 	c;								\
 })
-
-#endif /* defined(__GCC_ASM_FLAG_OUTPUTS__) */
 
 #define GEN_UNARY_RMWcc_4(op, var, cc, arg0)				\
 	__GEN_RMWcc(op " " arg0, var, cc, __CLOBBERS_MEM())

arch/x86/include/asm/sev.h

···
 
 	/* "pvalidate" mnemonic support in binutils 2.36 and newer */
 	asm volatile(".byte 0xF2, 0x0F, 0x01, 0xFF\n\t"
-		     CC_SET(c)
-		     : CC_OUT(c) (no_rmpupdate), "=a"(rc)
+		     : "=@ccc"(no_rmpupdate), "=a"(rc)
 		     : "a"(vaddr), "c"(rmp_psize), "d"(validate)
 		     : "memory", "cc");
 

arch/x86/include/asm/signal.h

···
 static inline int __gen_sigismember(sigset_t *set, int _sig)
 {
 	bool ret;
-	asm("btl %2,%1" CC_SET(c)
-	    : CC_OUT(c) (ret) : "m"(*set), "Ir"(_sig-1));
+	asm("btl %2,%1" : "=@ccc"(ret) : "m"(*set), "Ir"(_sig-1));
 	return ret;
 }
 

arch/x86/include/asm/special_insns.h

···
 	 * "rdpkru" instruction.  Places PKRU contents in to EAX,
 	 * clears EDX and requires that ecx=0.
 	 */
-	asm volatile(".byte 0x0f,0x01,0xee\n\t"
-		     : "=a" (pkru), "=d" (edx)
-		     : "c" (ecx));
+	asm volatile("rdpkru" : "=a" (pkru), "=d" (edx) : "c" (ecx));
 	return pkru;
 }
 
···
 	 * "wrpkru" instruction.  Loads contents in EAX to PKRU,
 	 * requires that ecx = edx = 0.
 	 */
-	asm volatile(".byte 0x0f,0x01,0xef\n\t"
-		     : : "a" (pkru), "c"(ecx), "d"(edx));
+	asm volatile("wrpkru" : : "a" (pkru), "c"(ecx), "d"(edx));
 }
 
 #else
···
 	 * See movdir64b()'s comment on operand specification.
 	 */
 	asm volatile(".byte 0xf3, 0x0f, 0x38, 0xf8, 0x02, 0x66, 0x90"
-		     CC_SET(z)
-		     : CC_OUT(z) (zf), "+m" (*__dst)
+		     : "=@ccz" (zf), "+m" (*__dst)
 		     : "m" (*__src), "a" (__dst), "d" (__src));
 
 	/* Submission failure is indicated via EFLAGS.ZF=1 */

arch/x86/include/asm/uaccess.h

···
 	asm_goto_output("\n"						\
 		     "1: " LOCK_PREFIX "cmpxchg"itype" %[new], %[ptr]\n"\
 		     _ASM_EXTABLE_UA(1b, %l[label])			\
-		     : CC_OUT(z) (success),				\
+		     : "=@ccz" (success),				\
 		       [ptr] "+m" (*_ptr),				\
 		       [old] "+a" (__old)				\
 		     : [new] ltype (__new)				\
···
 	asm_goto_output("\n"						\
 		     "1: " LOCK_PREFIX "cmpxchg8b %[ptr]\n"		\
 		     _ASM_EXTABLE_UA(1b, %l[label])			\
-		     : CC_OUT(z) (success),				\
+		     : "=@ccz" (success),				\
 		       "+A" (__old),					\
 		       [ptr] "+m" (*_ptr)				\
 		     : "b" ((u32)__new),				\
···
 	__typeof__(*(_ptr)) __new = (_new);				\
 	asm volatile("\n"						\
 		     "1: " LOCK_PREFIX "cmpxchg"itype" %[new], %[ptr]\n"\
-		     CC_SET(z)						\
 		     "2:\n"						\
 		     _ASM_EXTABLE_TYPE_REG(1b, 2b, EX_TYPE_EFAULT_REG,	\
 					   %[errout])			\
-		     : CC_OUT(z) (success),				\
+		     : "=@ccz" (success),				\
 		       [errout] "+r" (__err),				\
 		       [ptr] "+m" (*_ptr),				\
 		       [old] "+a" (__old)				\

arch/x86/kernel/cpu/mtrr/cleanup.c

···
+// SPDX-License-Identifier: LGPL-2.0+
 /*
  * MTRR (Memory Type Range Register) cleanup
  *
  *  Copyright (C) 2009 Yinghai Lu
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 #include <linux/init.h>
 #include <linux/pci.h>

arch/x86/kernel/cpu/mtrr/mtrr.c

···
+// SPDX-License-Identifier: LGPL-2.0+
 /*  Generic MTRR (Memory Type Range Register) driver.
 
     Copyright (C) 1997-2000  Richard Gooch
     Copyright (c) 2002	     Patrick Mochel
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Library General Public
-    License as published by the Free Software Foundation; either
-    version 2 of the License, or (at your option) any later version.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Library General Public License for more details.
-
-    You should have received a copy of the GNU Library General Public
-    License along with this library; if not, write to the Free
-    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
     Richard Gooch may be reached by email at  [e-mail]
     The postal address is:

arch/x86/kernel/cpu/sgx/encls.h

···
 	({							\
 	int ret;						\
 	asm volatile(						\
-	"1: .byte 0x0f, 0x01, 0xcf;\n\t"			\
+	"1: encls\n"						\
 	"2:\n"							\
 	_ASM_EXTABLE_TYPE(1b, 2b, EX_TYPE_FAULT_SGX)		\
 	: "=a"(ret)						\
···
 	({							\
 	int ret;						\
 	asm volatile(						\
-	"1: .byte 0x0f, 0x01, 0xcf;\n\t"			\
-	"   xor %%eax,%%eax;\n"					\
+	"1: encls\n\t"						\
+	"xor %%eax,%%eax\n"					\
 	"2:\n"							\
 	_ASM_EXTABLE_TYPE(1b, 2b, EX_TYPE_FAULT_SGX)		\
 	: "=a"(ret), "=b"(rbx_out)				\

tools/arch/x86/include/asm/asm.h

···
 
 #endif
 
-/*
- * Macros to generate condition code outputs from inline assembly,
- * The output operand must be type "bool".
- */
-#ifdef __GCC_ASM_FLAG_OUTPUTS__
-# define CC_SET(c) "\n\t/* output condition code " #c "*/\n"
-# define CC_OUT(c) "=@cc" #c
-#else
-# define CC_SET(c) "\n\tset" #c " %[_cc_" #c "]\n"
-# define CC_OUT(c) [_cc_ ## c] "=qm"
-#endif
-
 #ifdef __KERNEL__
 
 /* Exception table entry */

tools/perf/bench/find-bit-bench.c

···
 	accumulator++;
 }
 
-#if (defined(__i386__) || defined(__x86_64__)) && defined(__GCC_ASM_FLAG_OUTPUTS__)
+#if defined(__i386__) || defined(__x86_64__)
 static bool asm_test_bit(long nr, const unsigned long *addr)
 {
 	bool oldbit;