1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
4 * Copyright 2003 PathScale, Inc.
5 * Derived from include/asm-i386/pgalloc.h and include/asm-i386/pgtable.h
6 */
7
8 #ifndef __UM_PGALLOC_H
9 #define __UM_PGALLOC_H
10
11 #include <linux/mm.h>
12
13 #include <asm-generic/pgalloc.h>
14
15 #define pmd_populate_kernel(mm, pmd, pte) \
16 set_pmd(pmd, __pmd(_PAGE_TABLE + (unsigned long) __pa(pte)))
17
18 #define pmd_populate(mm, pmd, pte) \
19 set_pmd(pmd, __pmd(_PAGE_TABLE + \
20 ((unsigned long long)page_to_pfn(pte) << \
21 (unsigned long long) PAGE_SHIFT)))
22
23 /*
24 * Allocate and free page tables.
25 */
26 extern pgd_t *pgd_alloc(struct mm_struct *);
27
28 #define __pte_free_tlb(tlb, pte, address) \
29 do { \
30 pagetable_pte_dtor(page_ptdesc(pte)); \
31 tlb_remove_page_ptdesc((tlb), (page_ptdesc(pte))); \
32 } while (0)
33
34 #ifdef CONFIG_3_LEVEL_PGTABLES
35
36 #define __pmd_free_tlb(tlb, pmd, address) \
37 do { \
38 pagetable_pmd_dtor(virt_to_ptdesc(pmd)); \
39 tlb_remove_page_ptdesc((tlb), virt_to_ptdesc(pmd)); \
40 } while (0)
41
42 #endif
43
44 #endif
45
46
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