1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2017 ARM Ltd.
6 #include <linux/uaccess.h>
7 #include <asm/barrier.h>
8 #include <asm/cacheflush.h>
10 void memcpy_flushcache(void *dst, const void *src, size_t cnt)
13 * We assume this should not be called with @dst pointing to
14 * non-cacheable memory, such that we don't need an explicit
15 * barrier to order the cache maintenance against the memcpy.
17 memcpy(dst, src, cnt);
18 dcache_clean_pop((unsigned long)dst, (unsigned long)dst + cnt);
20 EXPORT_SYMBOL_GPL(memcpy_flushcache);
22 unsigned long __copy_user_flushcache(void *to, const void __user *from,
27 rc = raw_copy_from_user(to, from, n);
30 dcache_clean_pop((unsigned long)to, (unsigned long)to + n - rc);