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 <asm/pgtable-types.h>
  17
  18extern void __cpu_clear_user_page(void *p, unsigned long user);
  19extern void __cpu_copy_user_page(void *to, const void *from,
  20                                 unsigned long user);
  21extern void copy_page(void *to, const void *from);
  22extern void clear_page(void *to);
  23
  24#define clear_user_page(addr,vaddr,pg)  __cpu_clear_user_page(addr, vaddr)
  25#define copy_user_page(to,from,vaddr,pg) __cpu_copy_user_page(to, from, vaddr)
  26
  27typedef struct page *pgtable_t;
  28
  29extern int pfn_valid(unsigned long);
  30
  31#include <asm/memory.h>
  32
  33#endif /* !__ASSEMBLY__ */
  34
  35#define VM_DATA_DEFAULT_FLAGS \
  36        (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
  37         VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
  38
  39#include <asm-generic/getorder.h>
  40
  41#endif
  42