LXR linux/arch/arm64/include/asm/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 __ASSEMBLY__
  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 page *alloc_zeroed_user_highpage_movable(struct vm_area_struct *vma,
  33                                                unsigned long vaddr);
  34#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE_MOVABLE
  35
  36void tag_clear_highpage(struct page *to);
  37#define __HAVE_ARCH_TAG_CLEAR_HIGHPAGE
  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_valid(unsigned long pfn);
  45int pfn_is_map_memory(unsigned long pfn);
  46
  47#include <asm/memory.h>
  48
  49#endif /* !__ASSEMBLY__ */
  50
  51#define VM_DATA_DEFAULT_FLAGS   (VM_DATA_FLAGS_TSK_EXEC | VM_MTE_ALLOWED)
  52
  53#include <asm-generic/getorder.h>
  54
  55#endif
  56