page.h

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Based on arch/arm/include/asm/page.h
 4 *
 5 * Copyright (C) 1995-2003 Russell King
 6 * Copyright (C) 2012 ARM Ltd.
 7 */
 8#ifndef __ASM_PAGE_H
 9#define __ASM_PAGE_H
10
11#include <asm/page-def.h>
12
13#ifndef __ASSEMBLER__
14
15#include <linux/personality.h> /* for READ_IMPLIES_EXEC */
16#include <linux/types.h> /* for gfp_t */
17#include <asm/pgtable-types.h>
18
19struct page;
20struct vm_area_struct;
21
22extern void copy_page(void *to, const void *from);
23extern void clear_page(void *to);
24
25void copy_user_highpage(struct page *to, struct page *from,
26			unsigned long vaddr, struct vm_area_struct *vma);
27#define __HAVE_ARCH_COPY_USER_HIGHPAGE
28
29void copy_highpage(struct page *to, struct page *from);
30#define __HAVE_ARCH_COPY_HIGHPAGE
31
32struct folio *vma_alloc_zeroed_movable_folio(struct vm_area_struct *vma,
33						unsigned long vaddr);
34#define vma_alloc_zeroed_movable_folio vma_alloc_zeroed_movable_folio
35
36bool tag_clear_highpages(struct page *to, int numpages);
37#define __HAVE_ARCH_TAG_CLEAR_HIGHPAGES
38
39#define clear_user_page(page, vaddr, pg)	clear_page(page)
40#define copy_user_page(to, from, vaddr, pg)	copy_page(to, from)
41
42typedef struct page *pgtable_t;
43
44int pfn_is_map_memory(unsigned long pfn);
45
46#include <asm/memory.h>
47
48#endif /* !__ASSEMBLER__ */
49
50#define VM_DATA_DEFAULT_FLAGS	(VM_DATA_FLAGS_TSK_EXEC | VM_MTE_ALLOWED)
51
52#include <asm-generic/getorder.h>
53
54#endif