1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_POWERPC_PGALLOC_32_H
3 #define _ASM_POWERPC_PGALLOC_32_H
4 
5 #include <linux/threads.h>
6 #include <linux/slab.h>
7 
8 /*
9  * We don't have any real pmd's, and this code never triggers because
10  * the pgd will always be present..
11  */
12 /* #define pmd_alloc_one(mm,address)       ({ BUG(); ((pmd_t *)2); }) */
13 #define pmd_free(mm, x) 		do { } while (0)
14 #define __pmd_free_tlb(tlb,x,a)		do { } while (0)
15 /* #define pgd_populate(mm, pmd, pte)      BUG() */
16 
17 static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp,
18 				       pte_t *pte)
19 {
20 	if (IS_ENABLED(CONFIG_BOOKE))
21 		*pmdp = __pmd((unsigned long)pte | _PMD_PRESENT);
22 	else
23 		*pmdp = __pmd(__pa(pte) | _PMD_PRESENT);
24 }
25 
26 static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmdp,
27 				pgtable_t pte_page)
28 {
29 	if (IS_ENABLED(CONFIG_BOOKE))
30 		*pmdp = __pmd((unsigned long)pte_page | _PMD_PRESENT);
31 	else
32 		*pmdp = __pmd(__pa(pte_page) | _PMD_USER | _PMD_PRESENT);
33 }
34 
35 #endif /* _ASM_POWERPC_PGALLOC_32_H */
36