3  *  Page table allocation functions
21 	unsigned long *table;  in crst_table_alloc_noprof()  local
28 	table = ptdesc_address(ptdesc);  in crst_table_alloc_noprof()
29 	__arch_set_page_dat(table, 1UL << CRST_ALLOC_ORDER);  in crst_table_alloc_noprof()
30 	return table;  in crst_table_alloc_noprof()
33 void crst_table_free(struct mm_struct *mm, unsigned long *table)  in crst_table_free()  argument
35 	if (!table)  in crst_table_free()
37 	pagetable_free(virt_to_ptdesc(table));  in crst_table_free()
121 	unsigned long *table;  in page_table_alloc_noprof()  local
132 	table = ptdesc_address(ptdesc);  in page_table_alloc_noprof()
133 	__arch_set_page_dat(table, 1);  in page_table_alloc_noprof()
134 	memset64((u64 *)table, _PAGE_INVALID, PTRS_PER_PTE);  in page_table_alloc_noprof()
135 	memset64((u64 *)table + PTRS_PER_PTE, 0, PTRS_PER_PTE);  in page_table_alloc_noprof()
136 	return table;  in page_table_alloc_noprof()
139 void page_table_free(struct mm_struct *mm, unsigned long *table)  in page_table_free()  argument
141 	struct ptdesc *ptdesc = virt_to_ptdesc(table);  in page_table_free()
173 	unsigned long *table;  in base_pgt_alloc()  local
175 	table = kmem_cache_alloc(base_pgt_cache, GFP_KERNEL);  in base_pgt_alloc()
176 	if (table)  in base_pgt_alloc()
177 		memset64((u64 *)table, _PAGE_INVALID, PTRS_PER_PTE);  in base_pgt_alloc()
178 	return table;  in base_pgt_alloc()
181 static void base_pgt_free(unsigned long *table)  in base_pgt_free()  argument
183 	kmem_cache_free(base_pgt_cache, table);  in base_pgt_free()
188 	unsigned long *table;  in base_crst_alloc()  local
194 	table = ptdesc_address(ptdesc);  in base_crst_alloc()
195 	crst_table_init(table, val);  in base_crst_alloc()
196 	return table;  in base_crst_alloc()
199 static void base_crst_free(unsigned long *table)  in base_crst_free()  argument
201 	if (!table)  in base_crst_free()
203 	pagetable_free(virt_to_ptdesc(table));  in base_crst_free()
250 	unsigned long *ste, next, *table;  in base_segment_walk()  local
260 			table = base_pgt_alloc();  in base_segment_walk()
261 			if (!table)  in base_segment_walk()
263 			*ste = __pa(table) | _SEGMENT_ENTRY;  in base_segment_walk()
265 		table = __va(*ste & _SEGMENT_ENTRY_ORIGIN);  in base_segment_walk()
266 		rc = base_page_walk(table, addr, next, alloc);  in base_segment_walk()
270 			base_pgt_free(table);  in base_segment_walk()
279 	unsigned long *rtte, next, *table;  in base_region3_walk()  local
289 			table = base_crst_alloc(_SEGMENT_ENTRY_EMPTY);  in base_region3_walk()
290 			if (!table)  in base_region3_walk()
292 			*rtte = __pa(table) | _REGION3_ENTRY;  in base_region3_walk()
294 		table = __va(*rtte & _REGION_ENTRY_ORIGIN);  in base_region3_walk()
295 		rc = base_segment_walk(table, addr, next, alloc);  in base_region3_walk()
299 			base_crst_free(table);  in base_region3_walk()
307 	unsigned long *rste, next, *table;  in base_region2_walk()  local
317 			table = base_crst_alloc(_REGION3_ENTRY_EMPTY);  in base_region2_walk()
318 			if (!table)  in base_region2_walk()
320 			*rste = __pa(table) | _REGION2_ENTRY;  in base_region2_walk()
322 		table = __va(*rste & _REGION_ENTRY_ORIGIN);  in base_region2_walk()
323 		rc = base_region3_walk(table, addr, next, alloc);  in base_region2_walk()
327 			base_crst_free(table);  in base_region2_walk()
335 	unsigned long *rfte, next, *table;  in base_region1_walk()  local
345 			table = base_crst_alloc(_REGION2_ENTRY_EMPTY);  in base_region1_walk()
346 			if (!table)  in base_region1_walk()
348 			*rfte = __pa(table) | _REGION1_ENTRY;  in base_region1_walk()
350 		table = __va(*rfte & _REGION_ENTRY_ORIGIN);  in base_region1_walk()
351 		rc = base_region2_walk(table, addr, next, alloc);  in base_region1_walk()
355 			base_crst_free(table);  in base_region1_walk()
369 	unsigned long *table = __va(asce & _ASCE_ORIGIN);  in base_asce_free()  local
375 		base_segment_walk(table, 0, _REGION3_SIZE, 0);  in base_asce_free()
378 		base_region3_walk(table, 0, _REGION2_SIZE, 0);  in base_asce_free()
381 		base_region2_walk(table, 0, _REGION1_SIZE, 0);  in base_asce_free()
384 		base_region1_walk(table, 0, TASK_SIZE_MAX, 0);  in base_asce_free()
387 	base_crst_free(table);  in base_asce_free()
421 	unsigned long asce, *table, end;  in base_asce_alloc()  local
428 		table = base_crst_alloc(_SEGMENT_ENTRY_EMPTY);  in base_asce_alloc()
429 		if (!table)  in base_asce_alloc()
431 		rc = base_segment_walk(table, addr, end, 1);  in base_asce_alloc()
432 		asce = __pa(table) | _ASCE_TYPE_SEGMENT | _ASCE_TABLE_LENGTH;  in base_asce_alloc()
434 		table = base_crst_alloc(_REGION3_ENTRY_EMPTY);  in base_asce_alloc()
435 		if (!table)  in base_asce_alloc()
437 		rc = base_region3_walk(table, addr, end, 1);  in base_asce_alloc()
438 		asce = __pa(table) | _ASCE_TYPE_REGION3 | _ASCE_TABLE_LENGTH;  in base_asce_alloc()
440 		table = base_crst_alloc(_REGION2_ENTRY_EMPTY);  in base_asce_alloc()
441 		if (!table)  in base_asce_alloc()
443 		rc = base_region2_walk(table, addr, end, 1);  in base_asce_alloc()
444 		asce = __pa(table) | _ASCE_TYPE_REGION2 | _ASCE_TABLE_LENGTH;  in base_asce_alloc()
446 		table = base_crst_alloc(_REGION1_ENTRY_EMPTY);  in base_asce_alloc()
447 		if (!table)  in base_asce_alloc()
449 		rc = base_region1_walk(table, addr, end, 1);  in base_asce_alloc()
450 		asce = __pa(table) | _ASCE_TYPE_REGION1 | _ASCE_TABLE_LENGTH;  in base_asce_alloc()