43 static void machine_kexec_free_page_tables(struct kimage *image)  in machine_kexec_free_page_tables()  argument
45 	free_pages((unsigned long)image->arch.pgd, PGD_ALLOCATION_ORDER);  in machine_kexec_free_page_tables()
46 	image->arch.pgd = NULL;  in machine_kexec_free_page_tables()
48 	free_page((unsigned long)image->arch.pmd0);  in machine_kexec_free_page_tables()
49 	image->arch.pmd0 = NULL;  in machine_kexec_free_page_tables()
50 	free_page((unsigned long)image->arch.pmd1);  in machine_kexec_free_page_tables()
51 	image->arch.pmd1 = NULL;  in machine_kexec_free_page_tables()
53 	free_page((unsigned long)image->arch.pte0);  in machine_kexec_free_page_tables()
54 	image->arch.pte0 = NULL;  in machine_kexec_free_page_tables()
55 	free_page((unsigned long)image->arch.pte1);  in machine_kexec_free_page_tables()
56 	image->arch.pte1 = NULL;  in machine_kexec_free_page_tables()
59 static int machine_kexec_alloc_page_tables(struct kimage *image)  in machine_kexec_alloc_page_tables()  argument
61 	image->arch.pgd = (pgd_t *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,  in machine_kexec_alloc_page_tables()
64 	image->arch.pmd0 = (pmd_t *)get_zeroed_page(GFP_KERNEL);  in machine_kexec_alloc_page_tables()
65 	image->arch.pmd1 = (pmd_t *)get_zeroed_page(GFP_KERNEL);  in machine_kexec_alloc_page_tables()
67 	image->arch.pte0 = (pte_t *)get_zeroed_page(GFP_KERNEL);  in machine_kexec_alloc_page_tables()
68 	image->arch.pte1 = (pte_t *)get_zeroed_page(GFP_KERNEL);  in machine_kexec_alloc_page_tables()
69 	if (!image->arch.pgd ||  in machine_kexec_alloc_page_tables()
71 	    !image->arch.pmd0 || !image->arch.pmd1 ||  in machine_kexec_alloc_page_tables()
73 	    !image->arch.pte0 || !image->arch.pte1) {  in machine_kexec_alloc_page_tables()
100 static void machine_kexec_prepare_page_tables(struct kimage *image)  in machine_kexec_prepare_page_tables()  argument
105 	control_page = page_address(image->control_code_page);  in machine_kexec_prepare_page_tables()
107 	pmd = image->arch.pmd0;  in machine_kexec_prepare_page_tables()
110 		image->arch.pgd, pmd, image->arch.pte0,  in machine_kexec_prepare_page_tables()
113 	pmd = image->arch.pmd1;  in machine_kexec_prepare_page_tables()
116 		image->arch.pgd, pmd, image->arch.pte1,  in machine_kexec_prepare_page_tables()
122  * proposed image and prepare the control pages
127  * Do what every setup is needed on image and the
135 int machine_kexec_prepare(struct kimage *image)  in machine_kexec_prepare()  argument
139 	set_memory_x((unsigned long)page_address(image->control_code_page), 1);  in machine_kexec_prepare()
140 	error = machine_kexec_alloc_page_tables(image);  in machine_kexec_prepare()
143 	machine_kexec_prepare_page_tables(image);  in machine_kexec_prepare()
149  * when an image is freed.
151 void machine_kexec_cleanup(struct kimage *image)  in machine_kexec_cleanup()  argument
153 	set_memory_nx((unsigned long)page_address(image->control_code_page), 1);  in machine_kexec_cleanup()
154 	machine_kexec_free_page_tables(image);  in machine_kexec_cleanup()
161 void machine_kexec(struct kimage *image)  in machine_kexec()  argument
174 	if (image->preserve_context)  in machine_kexec()
184 	if (image->preserve_context) {  in machine_kexec()
197 	control_page = page_address(image->control_code_page);  in machine_kexec()
203 	page_list[PA_PGD] = __pa(image->arch.pgd);  in machine_kexec()
205 	if (image->type == KEXEC_TYPE_DEFAULT)  in machine_kexec()
206 		page_list[PA_SWAP_PAGE] = (page_to_pfn(image->swap_page)  in machine_kexec()
228 	image->start = relocate_kernel_ptr((unsigned long)image->head,  in machine_kexec()
230 					   image->start,  in machine_kexec()
232 					   image->preserve_context);  in machine_kexec()
235 	if (image->preserve_context)  in machine_kexec()