3  *  Page table allocation functions
47 	unsigned long *table;  in crst_table_alloc()  local
51 	table = ptdesc_to_virt(ptdesc);  in crst_table_alloc()
52 	__arch_set_page_dat(table, 1UL << CRST_ALLOC_ORDER);  in crst_table_alloc()
53 	return table;  in crst_table_alloc()
56 void crst_table_free(struct mm_struct *mm, unsigned long *table)  in crst_table_free()  argument
58 	pagetable_free(virt_to_ptdesc(table));  in crst_table_free()
141 	u64 *table;  in page_table_alloc_pgste()  local
145 		table = (u64 *)ptdesc_to_virt(ptdesc);  in page_table_alloc_pgste()
146 		__arch_set_page_dat(table, 1);  in page_table_alloc_pgste()
147 		memset64(table, _PAGE_INVALID, PTRS_PER_PTE);  in page_table_alloc_pgste()
148 		memset64(table + PTRS_PER_PTE, 0, PTRS_PER_PTE);  in page_table_alloc_pgste()
163 	unsigned long *table;  in page_table_alloc()  local
172 	table = ptdesc_to_virt(ptdesc);  in page_table_alloc()
173 	__arch_set_page_dat(table, 1);  in page_table_alloc()
176 	memset64((u64 *)table, _PAGE_INVALID, PTRS_PER_PTE);  in page_table_alloc()
177 	memset64((u64 *)table + PTRS_PER_PTE, 0, PTRS_PER_PTE);  in page_table_alloc()
178 	return table;  in page_table_alloc()
187 void page_table_free(struct mm_struct *mm, unsigned long *table)  in page_table_free()  argument
189 	struct ptdesc *ptdesc = virt_to_ptdesc(table);  in page_table_free()
194 void __tlb_remove_table(void *table)  in __tlb_remove_table()  argument
196 	struct ptdesc *ptdesc = virt_to_ptdesc(table);  in __tlb_remove_table()
237 	unsigned long *table;  in base_pgt_alloc()  local
239 	table = kmem_cache_alloc(base_pgt_cache, GFP_KERNEL);  in base_pgt_alloc()
240 	if (table)  in base_pgt_alloc()
241 		memset64((u64 *)table, _PAGE_INVALID, PTRS_PER_PTE);  in base_pgt_alloc()
242 	return table;  in base_pgt_alloc()
245 static void base_pgt_free(unsigned long *table)  in base_pgt_free()  argument
247 	kmem_cache_free(base_pgt_cache, table);  in base_pgt_free()
252 	unsigned long *table;  in base_crst_alloc()  local
258 	table = ptdesc_address(ptdesc);  in base_crst_alloc()
259 	crst_table_init(table, val);  in base_crst_alloc()
260 	return table;  in base_crst_alloc()
263 static void base_crst_free(unsigned long *table)  in base_crst_free()  argument
265 	pagetable_free(virt_to_ptdesc(table));  in base_crst_free()
312 	unsigned long *ste, next, *table;  in base_segment_walk()  local
322 			table = base_pgt_alloc();  in base_segment_walk()
323 			if (!table)  in base_segment_walk()
325 			*ste = __pa(table) | _SEGMENT_ENTRY;  in base_segment_walk()
327 		table = __va(*ste & _SEGMENT_ENTRY_ORIGIN);  in base_segment_walk()
328 		rc = base_page_walk(table, addr, next, alloc);  in base_segment_walk()
332 			base_pgt_free(table);  in base_segment_walk()
341 	unsigned long *rtte, next, *table;  in base_region3_walk()  local
351 			table = base_crst_alloc(_SEGMENT_ENTRY_EMPTY);  in base_region3_walk()
352 			if (!table)  in base_region3_walk()
354 			*rtte = __pa(table) | _REGION3_ENTRY;  in base_region3_walk()
356 		table = __va(*rtte & _REGION_ENTRY_ORIGIN);  in base_region3_walk()
357 		rc = base_segment_walk(table, addr, next, alloc);  in base_region3_walk()
361 			base_crst_free(table);  in base_region3_walk()
369 	unsigned long *rste, next, *table;  in base_region2_walk()  local
379 			table = base_crst_alloc(_REGION3_ENTRY_EMPTY);  in base_region2_walk()
380 			if (!table)  in base_region2_walk()
382 			*rste = __pa(table) | _REGION2_ENTRY;  in base_region2_walk()
384 		table = __va(*rste & _REGION_ENTRY_ORIGIN);  in base_region2_walk()
385 		rc = base_region3_walk(table, addr, next, alloc);  in base_region2_walk()
389 			base_crst_free(table);  in base_region2_walk()
397 	unsigned long *rfte, next, *table;  in base_region1_walk()  local
407 			table = base_crst_alloc(_REGION2_ENTRY_EMPTY);  in base_region1_walk()
408 			if (!table)  in base_region1_walk()
410 			*rfte = __pa(table) | _REGION1_ENTRY;  in base_region1_walk()
412 		table = __va(*rfte & _REGION_ENTRY_ORIGIN);  in base_region1_walk()
413 		rc = base_region2_walk(table, addr, next, alloc);  in base_region1_walk()
417 			base_crst_free(table);  in base_region1_walk()
431 	unsigned long *table = __va(asce & _ASCE_ORIGIN);  in base_asce_free()  local
437 		base_segment_walk(table, 0, _REGION3_SIZE, 0);  in base_asce_free()
440 		base_region3_walk(table, 0, _REGION2_SIZE, 0);  in base_asce_free()
443 		base_region2_walk(table, 0, _REGION1_SIZE, 0);  in base_asce_free()
446 		base_region1_walk(table, 0, TASK_SIZE_MAX, 0);  in base_asce_free()
449 	base_crst_free(table);  in base_asce_free()
483 	unsigned long asce, *table, end;  in base_asce_alloc()  local
490 		table = base_crst_alloc(_SEGMENT_ENTRY_EMPTY);  in base_asce_alloc()
491 		if (!table)  in base_asce_alloc()
493 		rc = base_segment_walk(table, addr, end, 1);  in base_asce_alloc()
494 		asce = __pa(table) | _ASCE_TYPE_SEGMENT | _ASCE_TABLE_LENGTH;  in base_asce_alloc()
496 		table = base_crst_alloc(_REGION3_ENTRY_EMPTY);  in base_asce_alloc()
497 		if (!table)  in base_asce_alloc()
499 		rc = base_region3_walk(table, addr, end, 1);  in base_asce_alloc()
500 		asce = __pa(table) | _ASCE_TYPE_REGION3 | _ASCE_TABLE_LENGTH;  in base_asce_alloc()
502 		table = base_crst_alloc(_REGION2_ENTRY_EMPTY);  in base_asce_alloc()
503 		if (!table)  in base_asce_alloc()
505 		rc = base_region2_walk(table, addr, end, 1);  in base_asce_alloc()
506 		asce = __pa(table) | _ASCE_TYPE_REGION2 | _ASCE_TABLE_LENGTH;  in base_asce_alloc()
508 		table = base_crst_alloc(_REGION1_ENTRY_EMPTY);  in base_asce_alloc()
509 		if (!table)  in base_asce_alloc()
511 		rc = base_region1_walk(table, addr, end, 1);  in base_asce_alloc()
512 		asce = __pa(table) | _ASCE_TYPE_REGION1 | _ASCE_TABLE_LENGTH;  in base_asce_alloc()