1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef LINUX_KEXEC_INTERNAL_H |
3 | #define LINUX_KEXEC_INTERNAL_H |
4 | |
5 | #include <linux/kexec.h> |
6 | |
7 | struct kexec_segment; |
8 | |
9 | struct kimage *do_kimage_alloc_init(void); |
10 | int sanity_check_segment_list(struct kimage *image); |
11 | void kimage_free_page_list(struct list_head *list); |
12 | void kimage_free(struct kimage *image); |
13 | int kimage_load_segment(struct kimage *image, struct kexec_segment *segment); |
14 | void kimage_terminate(struct kimage *image); |
15 | int kimage_is_destination_range(struct kimage *image, |
16 | unsigned long start, unsigned long end); |
17 | |
18 | /* |
19 | * Whatever is used to serialize accesses to the kexec_crash_image needs to be |
20 | * NMI safe, as __crash_kexec() can happen during nmi_panic(), so here we use a |
21 | * "simple" atomic variable that is acquired with a cmpxchg(). |
22 | */ |
23 | extern atomic_t __kexec_lock; |
24 | static inline bool kexec_trylock(void) |
25 | { |
26 | int old = 0; |
27 | return atomic_try_cmpxchg_acquire(v: &__kexec_lock, old: &old, new: 1); |
28 | } |
29 | static inline void kexec_unlock(void) |
30 | { |
31 | atomic_set_release(v: &__kexec_lock, i: 0); |
32 | } |
33 | |
34 | #ifdef CONFIG_KEXEC_FILE |
35 | #include <linux/purgatory.h> |
36 | void kimage_file_post_load_cleanup(struct kimage *image); |
37 | extern char kexec_purgatory[]; |
38 | extern size_t kexec_purgatory_size; |
39 | #else /* CONFIG_KEXEC_FILE */ |
40 | static inline void kimage_file_post_load_cleanup(struct kimage *image) { } |
41 | #endif /* CONFIG_KEXEC_FILE */ |
42 | |
43 | struct kexec_buf; |
44 | |
45 | #ifdef CONFIG_KEXEC_HANDOVER |
46 | int kho_locate_mem_hole(struct kexec_buf *kbuf, |
47 | int (*func)(struct resource *, void *)); |
48 | int kho_fill_kimage(struct kimage *image); |
49 | #else |
50 | static inline int kho_locate_mem_hole(struct kexec_buf *kbuf, |
51 | int (*func)(struct resource *, void *)) |
52 | { |
53 | return 1; |
54 | } |
55 | |
56 | static inline int kho_fill_kimage(struct kimage *image) { return 0; } |
57 | #endif /* CONFIG_KEXEC_HANDOVER */ |
58 | #endif /* LINUX_KEXEC_INTERNAL_H */ |
59 | |