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