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- /* 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 arch_cmpxchg64(ptr, o, n) \
- ({ \
- BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
- arch_cmpxchg((ptr), (o), (n)); \
- })
- #define arch_cmpxchg64_local(ptr, o, n) \
- ({ \
- BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
- arch_cmpxchg_local((ptr), (o), (n)); \
- })
- #define arch_try_cmpxchg64(ptr, po, n) \
- ({ \
- BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
- arch_try_cmpxchg((ptr), (po), (n)); \
- })
- #define system_has_cmpxchg_double() boot_cpu_has(X86_FEATURE_CX16)
- #endif /* _ASM_X86_CMPXCHG_64_H */
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