arch/arm64/mm/copypage.c

   1 /*
   2  * Based on arch/arm/mm/copypage.c
   3  *
   4  * Copyright (C) 2002 Deep Blue Solutions Ltd, All Rights Reserved.
   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
  20 #include <linux/mm.h>
  21
  22 #include <asm/page.h>
  23 #include <asm/cacheflush.h>
  24
  25 void __cpu_copy_user_page(void *kto, const void *kfrom, unsigned long vaddr)
  26 {
  27         struct page *page = virt_to_page(kto);
  28         copy_page(kto, kfrom);
  29         flush_dcache_page(page);
  30 }
  31 EXPORT_SYMBOL_GPL(__cpu_copy_user_page);
  32
  33 void __cpu_clear_user_page(void *kaddr, unsigned long vaddr)
  34 {
  35         clear_page(kaddr);
  36 }
  37 EXPORT_SYMBOL_GPL(__cpu_clear_user_page);