1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef LINUX_KEXEC_INTERNAL_H
3 #define LINUX_KEXEC_INTERNAL_H
5 #include <linux/kexec.h>
7 struct kimage *do_kimage_alloc_init(void);
8 int sanity_check_segment_list(struct kimage *image);
9 void kimage_free_page_list(struct list_head *list);
10 void kimage_free(struct kimage *image);
11 int kimage_load_segment(struct kimage *image, struct kexec_segment *segment);
12 void kimage_terminate(struct kimage *image);
13 int kimage_is_destination_range(struct kimage *image,
14 unsigned long start, unsigned long end);
17 * Whatever is used to serialize accesses to the kexec_crash_image needs to be
18 * NMI safe, as __crash_kexec() can happen during nmi_panic(), so here we use a
19 * "simple" atomic variable that is acquired with a cmpxchg().
21 extern atomic_t __kexec_lock;
22 static inline bool kexec_trylock(void)
24 return atomic_cmpxchg_acquire(&__kexec_lock, 0, 1) == 0;
26 static inline void kexec_unlock(void)
28 atomic_set_release(&__kexec_lock, 0);
31 #ifdef CONFIG_KEXEC_FILE
32 #include <linux/purgatory.h>
33 void kimage_file_post_load_cleanup(struct kimage *image);
34 extern char kexec_purgatory[];
35 extern size_t kexec_purgatory_size;
36 #else /* CONFIG_KEXEC_FILE */
37 static inline void kimage_file_post_load_cleanup(struct kimage *image) { }
38 #endif /* CONFIG_KEXEC_FILE */
39 #endif /* LINUX_KEXEC_INTERNAL_H */