58 	struct page *page = alloc_pages(GFP_KERNEL, ALLOC_ORDER);  in crst_table_alloc()  local
60 	if (!page)  in crst_table_alloc()
62 	page->index = 0;  in crst_table_alloc()
64 		struct page *shadow = alloc_pages(GFP_KERNEL, ALLOC_ORDER);  in crst_table_alloc()
66 			__free_pages(page, ALLOC_ORDER);  in crst_table_alloc()
69 		page->index = page_to_phys(shadow);  in crst_table_alloc()
72 	list_add(&page->lru, &mm->context.crst_list);  in crst_table_alloc()
74 	return (unsigned long *) page_to_phys(page);  in crst_table_alloc()
80 	struct page *page = virt_to_page(table);  in crst_table_free()  local
83 	list_del(&page->lru);  in crst_table_free()
170 	struct page *page;  in page_table_alloc()  local
176 	page = NULL;  in page_table_alloc()
178 		page = list_first_entry(&mm->context.pgtable_list,  in page_table_alloc()
179 					struct page, lru);  in page_table_alloc()
180 		if ((page->flags & FRAG_MASK) == ((1UL << TABLES_PER_PAGE) - 1))  in page_table_alloc()
181 			page = NULL;  in page_table_alloc()
183 	if (!page) {  in page_table_alloc()
185 		page = alloc_page(GFP_KERNEL|__GFP_REPEAT);  in page_table_alloc()
186 		if (!page)  in page_table_alloc()
188 		pgtable_page_ctor(page);  in page_table_alloc()
189 		page->flags &= ~FRAG_MASK;  in page_table_alloc()
190 		table = (unsigned long *) page_to_phys(page);  in page_table_alloc()
196 		list_add(&page->lru, &mm->context.pgtable_list);  in page_table_alloc()
198 	table = (unsigned long *) page_to_phys(page);  in page_table_alloc()
199 	while (page->flags & bits) {  in page_table_alloc()
203 	page->flags |= bits;  in page_table_alloc()
204 	if ((page->flags & FRAG_MASK) == ((1UL << TABLES_PER_PAGE) - 1))  in page_table_alloc()
205 		list_move_tail(&page->lru, &mm->context.pgtable_list);  in page_table_alloc()
212 	struct page *page;  in page_table_free()  local
217 	page = pfn_to_page(__pa(table) >> PAGE_SHIFT);  in page_table_free()
219 	page->flags ^= bits;  in page_table_free()
220 	if (page->flags & FRAG_MASK) {  in page_table_free()
222 		list_move(&page->lru, &mm->context.pgtable_list);  in page_table_free()
223 		page = NULL;  in page_table_free()
226 		list_del(&page->lru);  in page_table_free()
228 	if (page) {  in page_table_free()
229 		pgtable_page_dtor(page);  in page_table_free()
230 		__free_page(page);  in page_table_free()
236 	struct page *page;  in disable_noexec()  local
240 	list_for_each_entry(page, &mm->context.crst_list, lru)  in disable_noexec()
241 		if (page->index) {  in disable_noexec()
242 			free_pages((unsigned long) page->index, ALLOC_ORDER);  in disable_noexec()
243 			page->index = 0;  in disable_noexec()
246 	list_for_each_entry(page, &mm->context.pgtable_list, lru)  in disable_noexec()
247 		page->flags &= ~SECOND_HALVES;  in disable_noexec()