Merge tag 'gvt-fixes-2021-08-10' of https://github.com/intel/gvt-linux into drm-intel...
[linux-2.6-microblaze.git] / arch / arm64 / include / asm / alternative.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASM_ALTERNATIVE_H
3 #define __ASM_ALTERNATIVE_H
4
5 #include <asm/alternative-macros.h>
6
7 #ifndef __ASSEMBLY__
8
9 #include <linux/init.h>
10 #include <linux/types.h>
11 #include <linux/stddef.h>
12
13 struct alt_instr {
14         s32 orig_offset;        /* offset to original instruction */
15         s32 alt_offset;         /* offset to replacement instruction */
16         u16 cpufeature;         /* cpufeature bit set for replacement */
17         u8  orig_len;           /* size of original instruction(s) */
18         u8  alt_len;            /* size of new instruction(s), <= orig_len */
19 };
20
21 typedef void (*alternative_cb_t)(struct alt_instr *alt,
22                                  __le32 *origptr, __le32 *updptr, int nr_inst);
23
24 void __init apply_boot_alternatives(void);
25 void __init apply_alternatives_all(void);
26 bool alternative_is_applied(u16 cpufeature);
27
28 #ifdef CONFIG_MODULES
29 void apply_alternatives_module(void *start, size_t length);
30 #else
31 static inline void apply_alternatives_module(void *start, size_t length) { }
32 #endif
33
34 #endif /* __ASSEMBLY__ */
35 #endif /* __ASM_ALTERNATIVE_H */