208 static int __ref modify_pmd_table(pud_t *pud, unsigned long addr,  in modify_pmd_table()  argument
220 	pmd = pmd_offset(pud, addr);  in modify_pmd_table()
289 static void try_free_pmd_table(pud_t *pud, unsigned long start)  in try_free_pmd_table()  argument
302 	pmd = pmd_offset(pud, start);  in try_free_pmd_table()
306 	vmem_free_pages(pud_deref(*pud), CRST_ALLOC_ORDER);  in try_free_pmd_table()
307 	pud_clear(pud);  in try_free_pmd_table()
315 	pud_t *pud;  in modify_pud_table()  local
321 	pud = pud_offset(p4d, addr);  in modify_pud_table()
322 	for (; addr < end; addr = next, pud++) {  in modify_pud_table()
325 			if (pud_none(*pud))  in modify_pud_table()
327 			if (pud_large(*pud)) {  in modify_pud_table()
330 					pud_clear(pud);  in modify_pud_table()
335 		} else if (pud_none(*pud)) {  in modify_pud_table()
340 				pud_val(*pud) = addr | prot;  in modify_pud_table()
347 			pud_populate(&init_mm, pud, pmd);  in modify_pud_table()
348 		} else if (pud_large(*pud)) {  in modify_pud_table()
351 		ret = modify_pmd_table(pud, addr, next, add, direct);  in modify_pud_table()
355 			try_free_pmd_table(pud, addr & PUD_MASK);  in modify_pud_table()
367 	pud_t *pud;  in try_free_pud_table()  local
378 	pud = pud_offset(p4d, start);  in try_free_pud_table()
379 	for (i = 0; i < PTRS_PER_PUD; i++, pud++) {  in try_free_pud_table()
380 		if (!pud_none(*pud))  in try_free_pud_table()
393 	pud_t *pud;  in modify_p4d_table()  local
402 			pud = vmem_crst_alloc(_REGION3_ENTRY_EMPTY);  in modify_p4d_table()
403 			if (!pud)  in modify_p4d_table()
405 			p4d_populate(&init_mm, p4d, pud);  in modify_p4d_table()