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
  18 extern void __cpu_clear_user_page(void *p, unsigned long user);
  19 extern void __cpu_copy_user_page(void *to, const void *from,
  20                                  unsigned long user);
  21 extern void copy_page(void *to, const void *from);
  22 extern 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
  27 typedef struct page *pgtable_t;
  28
  29 extern 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