summaryrefslogtreecommitdiff
path: root/arch/alpha/include/asm/pgalloc.h
blob: a1a29f60934c53177e8f2e2ad1ddcdf00f83dcf0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ALPHA_PGALLOC_H
#define _ALPHA_PGALLOC_H

#include <linux/mm.h>
#include <linux/mmzone.h>

#include <asm-generic/pgalloc.h>	/* for pte_{alloc,free}_one */

/*      
 * Allocate and free page tables. The xxx_kernel() versions are
 * used to allocate a kernel page table - this turns on ASN bits
 * if any.
 */

static inline void
pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t pte)
{
	pmd_set(pmd, (pte_t *)(page_to_pa(pte) + PAGE_OFFSET));
}
#define pmd_pgtable(pmd) pmd_page(pmd)

static inline void
pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
{
	pmd_set(pmd, pte);
}

static inline void
pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
{
	pud_set(pud, pmd);
}

extern pgd_t *pgd_alloc(struct mm_struct *mm);

static inline void
pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
	free_page((unsigned long)pgd);
}

static inline pmd_t *
pmd_alloc_one(struct mm_struct *mm, unsigned long address)
{
	pmd_t *ret = (pmd_t *)__get_free_page(GFP_PGTABLE_USER);
	return ret;
}

static inline void
pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
	free_page((unsigned long)pmd);
}

#endif /* _ALPHA_PGALLOC_H */