cmpxchg_64.h

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#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 __HAVE_ARCH_CMPXCHG 1

#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() cpu_has_cx16

#endif /* _ASM_X86_CMPXCHG_64_H */