LXR linux/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
  25void __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}
  31EXPORT_SYMBOL_GPL(__cpu_copy_user_page);
  32
  33void __cpu_clear_user_page(void *kaddr, unsigned long vaddr)
  34{
  35        clear_page(kaddr);
  36}
  37EXPORT_SYMBOL_GPL(__cpu_clear_user_page);
  38