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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | #ifndef _ASM_IA64_PGALLOC_H |
3 | #define _ASM_IA64_PGALLOC_H | |
4 | ||
5 | /* | |
6 | * This file contains the functions and defines necessary to allocate | |
7 | * page tables. | |
8 | * | |
9 | * This hopefully works with any (fixed) ia-64 page-size, as defined | |
10 | * in <asm/page.h> (currently 8192). | |
11 | * | |
12 | * Copyright (C) 1998-2001 Hewlett-Packard Co | |
13 | * David Mosberger-Tang <davidm@hpl.hp.com> | |
14 | * Copyright (C) 2000, Goutham Rao <goutham.rao@intel.com> | |
15 | */ | |
16 | ||
1da177e4 LT |
17 | |
18 | #include <linux/compiler.h> | |
19 | #include <linux/mm.h> | |
20 | #include <linux/page-flags.h> | |
21 | #include <linux/threads.h> | |
22 | ||
01319921 MR |
23 | #include <asm-generic/pgalloc.h> |
24 | ||
1da177e4 LT |
25 | #include <asm/mmu_context.h> |
26 | ||
fde740e4 | 27 | static inline pgd_t *pgd_alloc(struct mm_struct *mm) |
1da177e4 | 28 | { |
13224794 | 29 | return (pgd_t *)__get_free_page(GFP_KERNEL | __GFP_ZERO); |
1da177e4 LT |
30 | } |
31 | ||
4d66bcc7 | 32 | #if CONFIG_PGTABLE_LEVELS == 4 |
837cd0bd | 33 | static inline void |
c03ab9e3 | 34 | p4d_populate(struct mm_struct *mm, p4d_t * p4d_entry, pud_t * pud) |
837cd0bd | 35 | { |
c03ab9e3 | 36 | p4d_val(*p4d_entry) = __pa(pud); |
837cd0bd RH |
37 | } |
38 | ||
9e1b32ca | 39 | #define __pud_free_tlb(tlb, pud, address) pud_free((tlb)->mm, pud) |
4d66bcc7 | 40 | #endif /* CONFIG_PGTABLE_LEVELS == 4 */ |
837cd0bd | 41 | |
fde740e4 RH |
42 | static inline void |
43 | pud_populate(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd) | |
1da177e4 | 44 | { |
fde740e4 RH |
45 | pud_val(*pud_entry) = __pa(pmd); |
46 | } | |
1da177e4 | 47 | |
9e1b32ca | 48 | #define __pmd_free_tlb(tlb, pmd, address) pmd_free((tlb)->mm, pmd) |
1da177e4 LT |
49 | |
50 | static inline void | |
2f569afd | 51 | pmd_populate(struct mm_struct *mm, pmd_t * pmd_entry, pgtable_t pte) |
1da177e4 LT |
52 | { |
53 | pmd_val(*pmd_entry) = page_to_phys(pte); | |
54 | } | |
55 | ||
56 | static inline void | |
fde740e4 | 57 | pmd_populate_kernel(struct mm_struct *mm, pmd_t * pmd_entry, pte_t * pte) |
1da177e4 LT |
58 | { |
59 | pmd_val(*pmd_entry) = __pa(pte); | |
60 | } | |
61 | ||
9e1b32ca | 62 | #define __pte_free_tlb(tlb, pte, address) pte_free((tlb)->mm, pte) |
1da177e4 | 63 | |
fde740e4 | 64 | #endif /* _ASM_IA64_PGALLOC_H */ |