304 static int modify_pud_table(p4d_t *p4d, unsigned long addr, unsigned long end,  in modify_pud_table()  argument
315 	pud = pud_offset(p4d, addr);  in modify_pud_table()
358 static void try_free_pud_table(p4d_t *p4d, unsigned long start)  in try_free_pud_table()  argument
363 	pud = pud_offset(p4d, start);  in try_free_pud_table()
368 	vmem_free_pages(p4d_deref(*p4d), CRST_ALLOC_ORDER);  in try_free_pud_table()
369 	p4d_clear(p4d);  in try_free_pud_table()
377 	p4d_t *p4d;  in modify_p4d_table()  local
380 	p4d = p4d_offset(pgd, addr);  in modify_p4d_table()
381 	for (; addr < end; addr = next, p4d++) {  in modify_p4d_table()
384 			if (p4d_none(*p4d))  in modify_p4d_table()
386 		} else if (p4d_none(*p4d)) {  in modify_p4d_table()
390 			p4d_populate(&init_mm, p4d, pud);  in modify_p4d_table()
392 		ret = modify_pud_table(p4d, addr, next, add, direct);  in modify_p4d_table()
396 			try_free_pud_table(p4d, addr & P4D_MASK);  in modify_p4d_table()
405 	p4d_t *p4d;  in try_free_p4d_table()  local
408 	p4d = p4d_offset(pgd, start);  in try_free_p4d_table()
409 	for (i = 0; i < PTRS_PER_P4D; i++, p4d++) {  in try_free_p4d_table()
410 		if (!p4d_none(*p4d))  in try_free_p4d_table()
423 	p4d_t *p4d;  in modify_pagetable()  local
438 			p4d = vmem_crst_alloc(_REGION2_ENTRY_EMPTY);  in modify_pagetable()
439 			if (!p4d)  in modify_pagetable()
441 			pgd_populate(&init_mm, pgd, p4d);  in modify_pagetable()
554 	p4d_t *p4d;  in vmem_get_alloc_pte()  local
563 		p4d = vmem_crst_alloc(_REGION2_ENTRY_EMPTY);  in vmem_get_alloc_pte()
564 		if (!p4d)  in vmem_get_alloc_pte()
566 		pgd_populate(&init_mm, pgd, p4d);  in vmem_get_alloc_pte()
568 	p4d = p4d_offset(pgd, addr);  in vmem_get_alloc_pte()
569 	if (p4d_none(*p4d)) {  in vmem_get_alloc_pte()
575 		p4d_populate(&init_mm, p4d, pud);  in vmem_get_alloc_pte()
577 	pud = pud_offset(p4d, addr);  in vmem_get_alloc_pte()