1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_S390_ABS_LOWCORE_H
3 #define _ASM_S390_ABS_LOWCORE_H
4
5 #include <asm/sections.h>
6 #include <asm/lowcore.h>
7
8 #define ABS_LOWCORE_MAP_SIZE (NR_CPUS * sizeof(struct lowcore))
9
10 extern unsigned long __abs_lowcore;
11
12 int abs_lowcore_map(int cpu, struct lowcore *lc, bool alloc);
13 void abs_lowcore_unmap(int cpu);
14
15 static inline struct lowcore *get_abs_lowcore(void)
16 {
17 int cpu;
18
19 cpu = get_cpu();
20 return ((struct lowcore *)__abs_lowcore) + cpu;
21 }
22
23 static inline void put_abs_lowcore(struct lowcore *lc)
24 {
25 put_cpu();
26 }
27
28 extern int __bootdata_preserved(relocate_lowcore);
29
30 static inline int have_relocated_lowcore(void)
31 {
32 return relocate_lowcore;
33 }
34
35 #endif /* _ASM_S390_ABS_LOWCORE_H */
36
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