1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 21965aae3SH. Peter Anvin #ifndef _ASM_X86_CMPXCHG_64_H 31965aae3SH. Peter Anvin #define _ASM_X86_CMPXCHG_64_H 4bb898558SAl Viro 500a41546SJeremy Fitzhardinge static inline void set_64bit(volatile u64 *ptr, u64 val) 600a41546SJeremy Fitzhardinge { 700a41546SJeremy Fitzhardinge *ptr = val; 800a41546SJeremy Fitzhardinge } 900a41546SJeremy Fitzhardinge 10*8bf705d1SDmitry Vyukov #define arch_cmpxchg64(ptr, o, n) \ 11bb898558SAl Viro ({ \ 12bb898558SAl Viro BUILD_BUG_ON(sizeof(*(ptr)) != 8); \ 13bb898558SAl Viro cmpxchg((ptr), (o), (n)); \ 14bb898558SAl Viro }) 15f3834b9eSPeter Zijlstra 16*8bf705d1SDmitry Vyukov #define arch_cmpxchg64_local(ptr, o, n) \ 17bb898558SAl Viro ({ \ 18bb898558SAl Viro BUILD_BUG_ON(sizeof(*(ptr)) != 8); \ 19bb898558SAl Viro cmpxchg_local((ptr), (o), (n)); \ 20bb898558SAl Viro }) 21bb898558SAl Viro 22362f924bSBorislav Petkov #define system_has_cmpxchg_double() boot_cpu_has(X86_FEATURE_CX16) 233824abd1SChristoph Lameter 241965aae3SH. Peter Anvin #endif /* _ASM_X86_CMPXCHG_64_H */ 25