1 // SPDX-License-Identifier: GPL-2.0-only
3 * Based on arch/arm/mm/copypage.c
5 * Copyright (C) 2002 Deep Blue Solutions Ltd, All Rights Reserved.
6 * Copyright (C) 2012 ARM Ltd.
9 #include <linux/bitops.h>
13 #include <asm/cacheflush.h>
14 #include <asm/cpufeature.h>
17 void copy_highpage(struct page *to, struct page *from)
19 struct page *kto = page_address(to);
20 struct page *kfrom = page_address(from);
22 copy_page(kto, kfrom);
24 if (system_supports_mte() && test_bit(PG_mte_tagged, &from->flags)) {
25 set_bit(PG_mte_tagged, &to->flags);
26 mte_copy_page_tags(kto, kfrom);
29 EXPORT_SYMBOL(copy_highpage);
31 void copy_user_highpage(struct page *to, struct page *from,
32 unsigned long vaddr, struct vm_area_struct *vma)
34 copy_highpage(to, from);
35 flush_dcache_page(to);
37 EXPORT_SYMBOL_GPL(copy_user_highpage);