25 lines
552 B
C
25 lines
552 B
C
/* 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); \
|
|
cmpxchg((ptr), (o), (n)); \
|
|
})
|
|
|
|
#define arch_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 */
|