1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef _ASM_X86_CMPXCHG_64_H
3*4882a593Smuzhiyun #define _ASM_X86_CMPXCHG_64_H
4*4882a593Smuzhiyun
set_64bit(volatile u64 * ptr,u64 val)5*4882a593Smuzhiyun static inline void set_64bit(volatile u64 *ptr, u64 val)
6*4882a593Smuzhiyun {
7*4882a593Smuzhiyun *ptr = val;
8*4882a593Smuzhiyun }
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #define arch_cmpxchg64(ptr, o, n) \
11*4882a593Smuzhiyun ({ \
12*4882a593Smuzhiyun BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
13*4882a593Smuzhiyun arch_cmpxchg((ptr), (o), (n)); \
14*4882a593Smuzhiyun })
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun #define arch_cmpxchg64_local(ptr, o, n) \
17*4882a593Smuzhiyun ({ \
18*4882a593Smuzhiyun BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
19*4882a593Smuzhiyun arch_cmpxchg_local((ptr), (o), (n)); \
20*4882a593Smuzhiyun })
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun #define system_has_cmpxchg_double() boot_cpu_has(X86_FEATURE_CX16)
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun #endif /* _ASM_X86_CMPXCHG_64_H */
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