arch/arm64/mm/copypage.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Based on arch/arm/mm/copypage.c
   4  *
   5  * Copyright (C) 2002 Deep Blue Solutions Ltd, All Rights Reserved.
   6  * Copyright (C) 2012 ARM Ltd.
   7  */
   8
   9 #include <linux/mm.h>
  10
  11 #include <asm/page.h>
  12 #include <asm/cacheflush.h>
  13
  14 void __cpu_copy_user_page(void *kto, const void *kfrom, unsigned long vaddr)
  15 {
  16         struct page *page = virt_to_page(kto);
  17         copy_page(kto, kfrom);
  18         flush_dcache_page(page);
  19 }
  20 EXPORT_SYMBOL_GPL(__cpu_copy_user_page);
  21
  22 void __cpu_clear_user_page(void *kaddr, unsigned long vaddr)
  23 {
  24         clear_page(kaddr);
  25 }
  26 EXPORT_SYMBOL_GPL(__cpu_clear_user_page);