[linux-block.git] / arch / x86 / include / asm / cmpxchg_64.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_CMPXCHG_64_H
#define _ASM_X86_CMPXCHG_64_H

static inline void set_64bit(volatile u64 *ptr, u64 val)
{
	*ptr = val;
}

#define cmpxchg64(ptr, o, n)						\
({									\
	BUILD_BUG_ON(sizeof(*(ptr)) != 8);				\
	cmpxchg((ptr), (o), (n));					\
})

#define cmpxchg64_local(ptr, o, n)					\
({									\
	BUILD_BUG_ON(sizeof(*(ptr)) != 8);				\
	cmpxchg_local((ptr), (o), (n));					\
})

#define system_has_cmpxchg_double() boot_cpu_has(X86_FEATURE_CX16)

#endif /* _ASM_X86_CMPXCHG_64_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1965aae3 PA	2	#ifndef _ASM_X86_CMPXCHG_64_H
1965aae3 PA	3	#define _ASM_X86_CMPXCHG_64_H
a436ed9c	4
00a41546 JF	5	static inline void set_64bit(volatile u64 *ptr, u64 val)
	6	{
	7	*ptr = val;
	8	}
	9
32f49eab	10	#define cmpxchg64(ptr, o, n) \
e52da357	11	({ \
32f49eab MD	12	BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
32f49eab MD	13	cmpxchg((ptr), (o), (n)); \
e52da357	14	})
f3834b9e	15
32f49eab	16	#define cmpxchg64_local(ptr, o, n) \
e52da357	17	({ \
32f49eab MD	18	BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
32f49eab MD	19	cmpxchg_local((ptr), (o), (n)); \
e52da357	20	})
a436ed9c	21
362f924b	22	#define system_has_cmpxchg_double() boot_cpu_has(X86_FEATURE_CX16)
3824abd1	23
1965aae3	24	#endif /* _ASM_X86_CMPXCHG_64_H */