blob: 74da1409cd14b5db50c60832eb7445a747ae0447 [file] [log] [blame]
Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +01001/* SPDX-License-Identifier: GPL-2.0 */
Dave Younga43cac02015-09-09 15:38:51 -07002#ifndef LINUX_KEXEC_INTERNAL_H
3#define LINUX_KEXEC_INTERNAL_H
4
5#include <linux/kexec.h>
6
7struct kimage *do_kimage_alloc_init(void);
8int sanity_check_segment_list(struct kimage *image);
9void kimage_free_page_list(struct list_head *list);
10void kimage_free(struct kimage *image);
11int kimage_load_segment(struct kimage *image, struct kexec_segment *segment);
12void kimage_terminate(struct kimage *image);
13int kimage_is_destination_range(struct kimage *image,
14 unsigned long start, unsigned long end);
15
Valentin Schneider05c62572022-06-30 23:32:58 +010016/*
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().
20 */
21extern atomic_t __kexec_lock;
22static inline bool kexec_trylock(void)
23{
24 return atomic_cmpxchg_acquire(&__kexec_lock, 0, 1) == 0;
25}
26static inline void kexec_unlock(void)
27{
28 atomic_set_release(&__kexec_lock, 0);
29}
Dave Younga43cac02015-09-09 15:38:51 -070030
31#ifdef CONFIG_KEXEC_FILE
Thomas Gleixner40c50c12017-03-10 13:17:18 +010032#include <linux/purgatory.h>
Dave Younga43cac02015-09-09 15:38:51 -070033void kimage_file_post_load_cleanup(struct kimage *image);
Kees Cooke2ae8ab2017-07-12 14:35:58 -070034extern char kexec_purgatory[];
35extern size_t kexec_purgatory_size;
Dave Younga43cac02015-09-09 15:38:51 -070036#else /* CONFIG_KEXEC_FILE */
37static inline void kimage_file_post_load_cleanup(struct kimage *image) { }
38#endif /* CONFIG_KEXEC_FILE */
39#endif /* LINUX_KEXEC_INTERNAL_H */