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
 7struct kexec_segment;
 8
 9struct kimage *do_kimage_alloc_init(void);
10int sanity_check_segment_list(struct kimage *image);
11void kimage_free_page_list(struct list_head *list);
12void kimage_free(struct kimage *image);
13int kimage_load_segment(struct kimage *image, struct kexec_segment *segment);
14void kimage_terminate(struct kimage *image);
15int 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 */
23extern atomic_t __kexec_lock;
24static inline bool kexec_trylock(void)
25{
26	int old = 0;
27	return atomic_try_cmpxchg_acquire(&__kexec_lock, &old, 1);
28}
29static inline void kexec_unlock(void)
30{
31	atomic_set_release(&__kexec_lock, 0);
32}
 
33
34#ifdef CONFIG_KEXEC_FILE
35#include <linux/purgatory.h>
36void kimage_file_post_load_cleanup(struct kimage *image);
37extern char kexec_purgatory[];
38extern size_t kexec_purgatory_size;
39#else /* CONFIG_KEXEC_FILE */
40static inline void kimage_file_post_load_cleanup(struct kimage *image) { }
41#endif /* CONFIG_KEXEC_FILE */
42#endif /* LINUX_KEXEC_INTERNAL_H */

 
 1#ifndef LINUX_KEXEC_INTERNAL_H
 2#define LINUX_KEXEC_INTERNAL_H
 3
 4#include <linux/kexec.h>
 5
 
 
 6struct kimage *do_kimage_alloc_init(void);
 7int sanity_check_segment_list(struct kimage *image);
 8void kimage_free_page_list(struct list_head *list);
 9void kimage_free(struct kimage *image);
10int kimage_load_segment(struct kimage *image, struct kexec_segment *segment);
11void kimage_terminate(struct kimage *image);
12int kimage_is_destination_range(struct kimage *image,
13				unsigned long start, unsigned long end);
14
15extern struct mutex kexec_mutex;
16
17#ifdef CONFIG_KEXEC_FILE
18struct kexec_sha_region {
19	unsigned long start;
20	unsigned long len;
21};
22
23/*
24 * Keeps track of buffer parameters as provided by caller for requesting
25 * memory placement of buffer.
 
26 */
27struct kexec_buf {
28	struct kimage *image;
29	char *buffer;
30	unsigned long bufsz;
31	unsigned long mem;
32	unsigned long memsz;
33	unsigned long buf_align;
34	unsigned long buf_min;
35	unsigned long buf_max;
36	bool top_down;		/* allocate from top of memory hole */
37};
38
 
 
39void kimage_file_post_load_cleanup(struct kimage *image);
 
 
40#else /* CONFIG_KEXEC_FILE */
41static inline void kimage_file_post_load_cleanup(struct kimage *image) { }
42#endif /* CONFIG_KEXEC_FILE */
43#endif /* LINUX_KEXEC_INTERNAL_H */