308 static int modify_pud_table(p4d_t *p4d, unsigned long addr, unsigned long end,  in modify_pud_table()  argument
319 	pud = pud_offset(p4d, addr);  in modify_pud_table()
362 static void try_free_pud_table(p4d_t *p4d, unsigned long start)  in try_free_pud_table()  argument
367 	pud = pud_offset(p4d, start);  in try_free_pud_table()
372 	vmem_free_pages(p4d_deref(*p4d), CRST_ALLOC_ORDER);  in try_free_pud_table()
373 	p4d_clear(p4d);  in try_free_pud_table()
381 	p4d_t *p4d;  in modify_p4d_table()  local
384 	p4d = p4d_offset(pgd, addr);  in modify_p4d_table()
385 	for (; addr < end; addr = next, p4d++) {  in modify_p4d_table()
388 			if (p4d_none(*p4d))  in modify_p4d_table()
390 		} else if (p4d_none(*p4d)) {  in modify_p4d_table()
394 			p4d_populate(&init_mm, p4d, pud);  in modify_p4d_table()
396 		ret = modify_pud_table(p4d, addr, next, add, direct);  in modify_p4d_table()
400 			try_free_pud_table(p4d, addr & P4D_MASK);  in modify_p4d_table()
409 	p4d_t *p4d;  in try_free_p4d_table()  local
412 	p4d = p4d_offset(pgd, start);  in try_free_p4d_table()
413 	for (i = 0; i < PTRS_PER_P4D; i++, p4d++) {  in try_free_p4d_table()
414 		if (!p4d_none(*p4d))  in try_free_p4d_table()
427 	p4d_t *p4d;  in modify_pagetable()  local
442 			p4d = vmem_crst_alloc(_REGION2_ENTRY_EMPTY);  in modify_pagetable()
443 			if (!p4d)  in modify_pagetable()
445 			pgd_populate(&init_mm, pgd, p4d);  in modify_pagetable()
558 	p4d_t *p4d;  in vmem_get_alloc_pte()  local
567 		p4d = vmem_crst_alloc(_REGION2_ENTRY_EMPTY);  in vmem_get_alloc_pte()
568 		if (!p4d)  in vmem_get_alloc_pte()
570 		pgd_populate(&init_mm, pgd, p4d);  in vmem_get_alloc_pte()
572 	p4d = p4d_offset(pgd, addr);  in vmem_get_alloc_pte()
573 	if (p4d_none(*p4d)) {  in vmem_get_alloc_pte()
579 		p4d_populate(&init_mm, p4d, pud);  in vmem_get_alloc_pte()
581 	pud = pud_offset(p4d, addr);  in vmem_get_alloc_pte()