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); 38