38 static inline bool kasan_p4d_table(pgd_t pgd)  in kasan_p4d_table()  argument
40 	return pgd_page(pgd) == virt_to_page(lm_alias(kasan_early_shadow_p4d));  in kasan_p4d_table()
43 static inline bool kasan_p4d_table(pgd_t pgd)  in kasan_p4d_table()  argument
183 static int __ref zero_p4d_populate(pgd_t *pgd, unsigned long addr,  in zero_p4d_populate()  argument
186 	p4d_t *p4d = p4d_offset(pgd, addr);  in zero_p4d_populate()
235 	pgd_t *pgd = pgd_offset_k(addr);  in kasan_populate_early_shadow()  local
264 			pgd_populate(&init_mm, pgd,  in kasan_populate_early_shadow()
267 			p4d = p4d_offset(pgd, addr);  in kasan_populate_early_shadow()
279 		if (pgd_none(*pgd)) {  in kasan_populate_early_shadow()
283 				p = p4d_alloc(&init_mm, pgd, addr);  in kasan_populate_early_shadow()
287 				pgd_populate(&init_mm, pgd,  in kasan_populate_early_shadow()
291 		zero_p4d_populate(pgd, addr, next);  in kasan_populate_early_shadow()
292 	} while (pgd++, addr = next, addr != end);  in kasan_populate_early_shadow()
342 static void kasan_free_p4d(p4d_t *p4d_start, pgd_t *pgd)  in kasan_free_p4d()  argument
353 	p4d_free(&init_mm, (p4d_t *)page_to_virt(pgd_page(*pgd)));  in kasan_free_p4d()
354 	pgd_clear(pgd);  in kasan_free_p4d()
455 	pgd_t *pgd;  in kasan_remove_zero_shadow()  local
470 		pgd = pgd_offset_k(addr);  in kasan_remove_zero_shadow()
471 		if (!pgd_present(*pgd))  in kasan_remove_zero_shadow()
474 		if (kasan_p4d_table(*pgd)) {  in kasan_remove_zero_shadow()
477 				pgd_clear(pgd);  in kasan_remove_zero_shadow()
481 		p4d = p4d_offset(pgd, addr);  in kasan_remove_zero_shadow()
483 		kasan_free_p4d(p4d_offset(pgd, 0), pgd);  in kasan_remove_zero_shadow()