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()
122 	u64 *table;  in page_table_alloc_pgste_noprof()  local
126 		table = (u64 *)ptdesc_address(ptdesc);  in page_table_alloc_pgste_noprof()
127 		__arch_set_page_dat(table, 1);  in page_table_alloc_pgste_noprof()
128 		memset64(table, _PAGE_INVALID, PTRS_PER_PTE);  in page_table_alloc_pgste_noprof()
129 		memset64(table + PTRS_PER_PTE, 0, PTRS_PER_PTE);  in page_table_alloc_pgste_noprof()
145 	unsigned long *table;  in page_table_alloc_noprof()  local
156 	table = ptdesc_address(ptdesc);  in page_table_alloc_noprof()
157 	__arch_set_page_dat(table, 1);  in page_table_alloc_noprof()
158 	memset64((u64 *)table, _PAGE_INVALID, PTRS_PER_PTE);  in page_table_alloc_noprof()
159 	memset64((u64 *)table + PTRS_PER_PTE, 0, PTRS_PER_PTE);  in page_table_alloc_noprof()
160 	return table;  in page_table_alloc_noprof()
163 void page_table_free(struct mm_struct *mm, unsigned long *table)  in page_table_free()  argument
165 	struct ptdesc *ptdesc = virt_to_ptdesc(table);  in page_table_free()
195 	unsigned long *table;  in base_pgt_alloc()  local
197 	table = kmem_cache_alloc(base_pgt_cache, GFP_KERNEL);  in base_pgt_alloc()
198 	if (table)  in base_pgt_alloc()
199 		memset64((u64 *)table, _PAGE_INVALID, PTRS_PER_PTE);  in base_pgt_alloc()
200 	return table;  in base_pgt_alloc()
203 static void base_pgt_free(unsigned long *table)  in base_pgt_free()  argument
205 	kmem_cache_free(base_pgt_cache, table);  in base_pgt_free()
210 	unsigned long *table;  in base_crst_alloc()  local
216 	table = ptdesc_address(ptdesc);  in base_crst_alloc()
217 	crst_table_init(table, val);  in base_crst_alloc()
218 	return table;  in base_crst_alloc()
221 static void base_crst_free(unsigned long *table)  in base_crst_free()  argument
223 	if (!table)  in base_crst_free()
225 	pagetable_free(virt_to_ptdesc(table));  in base_crst_free()
272 	unsigned long *ste, next, *table;  in base_segment_walk()  local
282 			table = base_pgt_alloc();  in base_segment_walk()
283 			if (!table)  in base_segment_walk()
285 			*ste = __pa(table) | _SEGMENT_ENTRY;  in base_segment_walk()
287 		table = __va(*ste & _SEGMENT_ENTRY_ORIGIN);  in base_segment_walk()
288 		rc = base_page_walk(table, addr, next, alloc);  in base_segment_walk()
292 			base_pgt_free(table);  in base_segment_walk()
301 	unsigned long *rtte, next, *table;  in base_region3_walk()  local
311 			table = base_crst_alloc(_SEGMENT_ENTRY_EMPTY);  in base_region3_walk()
312 			if (!table)  in base_region3_walk()
314 			*rtte = __pa(table) | _REGION3_ENTRY;  in base_region3_walk()
316 		table = __va(*rtte & _REGION_ENTRY_ORIGIN);  in base_region3_walk()
317 		rc = base_segment_walk(table, addr, next, alloc);  in base_region3_walk()
321 			base_crst_free(table);  in base_region3_walk()
329 	unsigned long *rste, next, *table;  in base_region2_walk()  local
339 			table = base_crst_alloc(_REGION3_ENTRY_EMPTY);  in base_region2_walk()
340 			if (!table)  in base_region2_walk()
342 			*rste = __pa(table) | _REGION2_ENTRY;  in base_region2_walk()
344 		table = __va(*rste & _REGION_ENTRY_ORIGIN);  in base_region2_walk()
345 		rc = base_region3_walk(table, addr, next, alloc);  in base_region2_walk()
349 			base_crst_free(table);  in base_region2_walk()
357 	unsigned long *rfte, next, *table;  in base_region1_walk()  local
367 			table = base_crst_alloc(_REGION2_ENTRY_EMPTY);  in base_region1_walk()
368 			if (!table)  in base_region1_walk()
370 			*rfte = __pa(table) | _REGION1_ENTRY;  in base_region1_walk()
372 		table = __va(*rfte & _REGION_ENTRY_ORIGIN);  in base_region1_walk()
373 		rc = base_region2_walk(table, addr, next, alloc);  in base_region1_walk()
377 			base_crst_free(table);  in base_region1_walk()
391 	unsigned long *table = __va(asce & _ASCE_ORIGIN);  in base_asce_free()  local
397 		base_segment_walk(table, 0, _REGION3_SIZE, 0);  in base_asce_free()
400 		base_region3_walk(table, 0, _REGION2_SIZE, 0);  in base_asce_free()
403 		base_region2_walk(table, 0, _REGION1_SIZE, 0);  in base_asce_free()
406 		base_region1_walk(table, 0, TASK_SIZE_MAX, 0);  in base_asce_free()
409 	base_crst_free(table);  in base_asce_free()
443 	unsigned long asce, *table, end;  in base_asce_alloc()  local
450 		table = base_crst_alloc(_SEGMENT_ENTRY_EMPTY);  in base_asce_alloc()
451 		if (!table)  in base_asce_alloc()
453 		rc = base_segment_walk(table, addr, end, 1);  in base_asce_alloc()
454 		asce = __pa(table) | _ASCE_TYPE_SEGMENT | _ASCE_TABLE_LENGTH;  in base_asce_alloc()
456 		table = base_crst_alloc(_REGION3_ENTRY_EMPTY);  in base_asce_alloc()
457 		if (!table)  in base_asce_alloc()
459 		rc = base_region3_walk(table, addr, end, 1);  in base_asce_alloc()
460 		asce = __pa(table) | _ASCE_TYPE_REGION3 | _ASCE_TABLE_LENGTH;  in base_asce_alloc()
462 		table = base_crst_alloc(_REGION2_ENTRY_EMPTY);  in base_asce_alloc()
463 		if (!table)  in base_asce_alloc()
465 		rc = base_region2_walk(table, addr, end, 1);  in base_asce_alloc()
466 		asce = __pa(table) | _ASCE_TYPE_REGION2 | _ASCE_TABLE_LENGTH;  in base_asce_alloc()
468 		table = base_crst_alloc(_REGION1_ENTRY_EMPTY);  in base_asce_alloc()
469 		if (!table)  in base_asce_alloc()
471 		rc = base_region1_walk(table, addr, end, 1);  in base_asce_alloc()
472 		asce = __pa(table) | _ASCE_TYPE_REGION1 | _ASCE_TABLE_LENGTH;  in base_asce_alloc()