forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
37 lines
868 B
37 lines
868 B
// SPDX-License-Identifier: GPL-2.0-only |
|
/* |
|
* Based on arch/arm/mm/copypage.c |
|
* |
|
* Copyright (C) 2002 Deep Blue Solutions Ltd, All Rights Reserved. |
|
* Copyright (C) 2012 ARM Ltd. |
|
*/ |
|
|
|
#include <linux/bitops.h> |
|
#include <linux/mm.h> |
|
|
|
#include <asm/page.h> |
|
#include <asm/cacheflush.h> |
|
#include <asm/cpufeature.h> |
|
#include <asm/mte.h> |
|
|
|
void copy_highpage(struct page *to, struct page *from) |
|
{ |
|
void *kto = page_address(to); |
|
void *kfrom = page_address(from); |
|
|
|
copy_page(kto, kfrom); |
|
|
|
if (system_supports_mte() && test_bit(PG_mte_tagged, &from->flags)) { |
|
set_bit(PG_mte_tagged, &to->flags); |
|
mte_copy_page_tags(kto, kfrom); |
|
} |
|
} |
|
EXPORT_SYMBOL(copy_highpage); |
|
|
|
void copy_user_highpage(struct page *to, struct page *from, |
|
unsigned long vaddr, struct vm_area_struct *vma) |
|
{ |
|
copy_highpage(to, from); |
|
flush_dcache_page(to); |
|
} |
|
EXPORT_SYMBOL_GPL(copy_user_highpage);
|
|
|