142 static struct page *kimage_alloc_page(struct kimage *image,
146 int sanity_check_segment_list(struct kimage *image)  in sanity_check_segment_list()  argument
149 	unsigned long nr_segments = image->nr_segments;  in sanity_check_segment_list()
168 		mstart = image->segment[i].mem;  in sanity_check_segment_list()
169 		mend   = mstart + image->segment[i].memsz;  in sanity_check_segment_list()
186 		mstart = image->segment[i].mem;  in sanity_check_segment_list()
187 		mend   = mstart + image->segment[i].memsz;  in sanity_check_segment_list()
191 			pstart = image->segment[j].mem;  in sanity_check_segment_list()
192 			pend   = pstart + image->segment[j].memsz;  in sanity_check_segment_list()
206 		if (image->segment[i].bufsz > image->segment[i].memsz)  in sanity_check_segment_list()
220 	if (image->type == KEXEC_TYPE_CRASH) {  in sanity_check_segment_list()
225 			mstart = image->segment[i].mem;  in sanity_check_segment_list()
226 			mend = mstart + image->segment[i].memsz - 1;  in sanity_check_segment_list()
239 	struct kimage *image;  in do_kimage_alloc_init()  local
242 	image = kzalloc(sizeof(*image), GFP_KERNEL);  in do_kimage_alloc_init()
243 	if (!image)  in do_kimage_alloc_init()
246 	image->head = 0;  in do_kimage_alloc_init()
247 	image->entry = &image->head;  in do_kimage_alloc_init()
248 	image->last_entry = &image->head;  in do_kimage_alloc_init()
249 	image->control_page = ~0; /* By default this does not apply */  in do_kimage_alloc_init()
250 	image->type = KEXEC_TYPE_DEFAULT;  in do_kimage_alloc_init()
253 	INIT_LIST_HEAD(&image->control_pages);  in do_kimage_alloc_init()
256 	INIT_LIST_HEAD(&image->dest_pages);  in do_kimage_alloc_init()
259 	INIT_LIST_HEAD(&image->unusable_pages);  in do_kimage_alloc_init()
261 	return image;  in do_kimage_alloc_init()
264 int kimage_is_destination_range(struct kimage *image,  in kimage_is_destination_range()  argument
270 	for (i = 0; i < image->nr_segments; i++) {  in kimage_is_destination_range()
273 		mstart = image->segment[i].mem;  in kimage_is_destination_range()
274 		mend = mstart + image->segment[i].memsz;  in kimage_is_destination_range()
324 static struct page *kimage_alloc_normal_control_pages(struct kimage *image,  in kimage_alloc_normal_control_pages()  argument
361 			      kimage_is_destination_range(image, addr, eaddr)) {  in kimage_alloc_normal_control_pages()
369 		list_add(&pages->lru, &image->control_pages);  in kimage_alloc_normal_control_pages()
390 static struct page *kimage_alloc_crash_control_pages(struct kimage *image,  in kimage_alloc_crash_control_pages()  argument
419 	hole_start = (image->control_page + (size - 1)) & ~(size - 1);  in kimage_alloc_crash_control_pages()
427 		for (i = 0; i < image->nr_segments; i++) {  in kimage_alloc_crash_control_pages()
430 			mstart = image->segment[i].mem;  in kimage_alloc_crash_control_pages()
431 			mend   = mstart + image->segment[i].memsz - 1;  in kimage_alloc_crash_control_pages()
440 		if (i == image->nr_segments) {  in kimage_alloc_crash_control_pages()
442 			image->control_page = hole_end;  in kimage_alloc_crash_control_pages()
451 struct page *kimage_alloc_control_pages(struct kimage *image,  in kimage_alloc_control_pages()  argument
456 	switch (image->type) {  in kimage_alloc_control_pages()
458 		pages = kimage_alloc_normal_control_pages(image, order);  in kimage_alloc_control_pages()
461 		pages = kimage_alloc_crash_control_pages(image, order);  in kimage_alloc_control_pages()
468 static int kimage_add_entry(struct kimage *image, kimage_entry_t entry)  in kimage_add_entry()  argument
470 	if (*image->entry != 0)  in kimage_add_entry()
471 		image->entry++;  in kimage_add_entry()
473 	if (image->entry == image->last_entry) {  in kimage_add_entry()
477 		page = kimage_alloc_page(image, GFP_KERNEL, KIMAGE_NO_DEST);  in kimage_add_entry()
482 		*image->entry = virt_to_phys(ind_page) | IND_INDIRECTION;  in kimage_add_entry()
483 		image->entry = ind_page;  in kimage_add_entry()
484 		image->last_entry = ind_page +  in kimage_add_entry()
487 	*image->entry = entry;  in kimage_add_entry()
488 	image->entry++;  in kimage_add_entry()
489 	*image->entry = 0;  in kimage_add_entry()
494 static int kimage_set_destination(struct kimage *image,  in kimage_set_destination()  argument
500 	result = kimage_add_entry(image, destination | IND_DESTINATION);  in kimage_set_destination()
506 static int kimage_add_page(struct kimage *image, unsigned long page)  in kimage_add_page()  argument
511 	result = kimage_add_entry(image, page | IND_SOURCE);  in kimage_add_page()
517 static void kimage_free_extra_pages(struct kimage *image)  in kimage_free_extra_pages()  argument
520 	kimage_free_page_list(&image->dest_pages);  in kimage_free_extra_pages()
523 	kimage_free_page_list(&image->unusable_pages);  in kimage_free_extra_pages()
526 void kimage_terminate(struct kimage *image)  in kimage_terminate()  argument
528 	if (*image->entry != 0)  in kimage_terminate()
529 		image->entry++;  in kimage_terminate()
531 	*image->entry = IND_DONE;  in kimage_terminate()
534 #define for_each_kimage_entry(image, ptr, entry) \  argument
535 	for (ptr = &image->head; (entry = *ptr) && !(entry & IND_DONE); \
547 void kimage_free(struct kimage *image)  in kimage_free()  argument
552 	if (!image)  in kimage_free()
555 	kimage_free_extra_pages(image);  in kimage_free()
556 	for_each_kimage_entry(image, ptr, entry) {  in kimage_free()
573 	machine_kexec_cleanup(image);  in kimage_free()
576 	kimage_free_page_list(&image->control_pages);  in kimage_free()
582 	if (image->file_mode)  in kimage_free()
583 		kimage_file_post_load_cleanup(image);  in kimage_free()
585 	kfree(image);  in kimage_free()
588 static kimage_entry_t *kimage_dst_used(struct kimage *image,  in kimage_dst_used()  argument
594 	for_each_kimage_entry(image, ptr, entry) {  in kimage_dst_used()
607 static struct page *kimage_alloc_page(struct kimage *image,  in kimage_alloc_page()  argument
636 	list_for_each_entry(page, &image->dest_pages, lru) {  in kimage_alloc_page()
654 			list_add(&page->lru, &image->unusable_pages);  in kimage_alloc_page()
664 		if (!kimage_is_destination_range(image, addr,  in kimage_alloc_page()
673 		old = kimage_dst_used(image, addr);  in kimage_alloc_page()
698 		list_add(&page->lru, &image->dest_pages);  in kimage_alloc_page()
704 static int kimage_load_normal_segment(struct kimage *image,  in kimage_load_normal_segment()  argument
714 	if (image->file_mode)  in kimage_load_normal_segment()
722 	result = kimage_set_destination(image, maddr);  in kimage_load_normal_segment()
731 		page = kimage_alloc_page(image, GFP_HIGHUSER, maddr);  in kimage_load_normal_segment()
736 		result = kimage_add_page(image, page_to_pfn(page)  in kimage_load_normal_segment()
750 		if (image->file_mode)  in kimage_load_normal_segment()
761 		if (image->file_mode)  in kimage_load_normal_segment()
771 static int kimage_load_crash_segment(struct kimage *image,  in kimage_load_crash_segment()  argument
785 	if (image->file_mode)  in kimage_load_crash_segment()
813 		if (image->file_mode)  in kimage_load_crash_segment()
825 		if (image->file_mode)  in kimage_load_crash_segment()
835 int kimage_load_segment(struct kimage *image,  in kimage_load_segment()  argument
840 	switch (image->type) {  in kimage_load_segment()
842 		result = kimage_load_normal_segment(image, segment);  in kimage_load_segment()
845 		result = kimage_load_crash_segment(image, segment);  in kimage_load_segment()