arch/arm64/include/asm/page.h

   1 /*
   2  * Based on arch/arm/include/asm/page.h
   3  *
   4  * Copyright (C) 1995-2003 Russell King
   5  * Copyright (C) 2012 ARM Ltd.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19 #ifndef __ASM_PAGE_H
  20 #define __ASM_PAGE_H
  21
  22 #include <asm/page-def.h>
  23
  24 #ifndef __ASSEMBLY__
  25
  26 #include <linux/personality.h> /* for READ_IMPLIES_EXEC */
  27 #include <asm/pgtable-types.h>
  28
  29 extern void __cpu_clear_user_page(void *p, unsigned long user);
  30 extern void __cpu_copy_user_page(void *to, const void *from,
  31                                  unsigned long user);
  32 extern void copy_page(void *to, const void *from);
  33 extern void clear_page(void *to);
  34
  35 #define clear_user_page(addr,vaddr,pg)  __cpu_clear_user_page(addr, vaddr)
  36 #define copy_user_page(to,from,vaddr,pg) __cpu_copy_user_page(to, from, vaddr)
  37
  38 typedef struct page *pgtable_t;
  39
  40 #ifdef CONFIG_HAVE_ARCH_PFN_VALID
  41 extern int pfn_valid(unsigned long);
  42 #endif
  43
  44 #include <asm/memory.h>
  45
  46 #endif /* !__ASSEMBLY__ */
  47
  48 #define VM_DATA_DEFAULT_FLAGS \
  49         (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
  50          VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
  51
  52 #include <asm-generic/getorder.h>
  53
  54 #endif