23 	pgd_t *pgd = (pgd_t *)__get_free_pages(GFP_KERNEL,  in pgd_alloc()  local
25 	pgd_t *actual_pgd = pgd;  in pgd_alloc()
27 	if (likely(pgd != NULL)) {  in pgd_alloc()
28 		memset(pgd, 0, PAGE_SIZE<<PGD_ALLOC_ORDER);  in pgd_alloc()
37 			+ (__u32)(__pa((unsigned long)pgd) >> PxD_VALUE_SHIFT));  in pgd_alloc()
40 		__pgd_val_set(*pgd, PxD_FLAG_ATTACHED);  in pgd_alloc()
46 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)  in pgd_free()  argument
49 	pgd -= PTRS_PER_PGD;  in pgd_free()
51 	free_pages((unsigned long)pgd, PGD_ALLOC_ORDER);  in pgd_free()
58 static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)  in pgd_populate()  argument
60 	__pgd_val_set(*pgd, (PxD_FLAG_PRESENT | PxD_FLAG_VALID) +  in pgd_populate()