// SPDX-License-Identifier: GPL-2.0-only/* * Copyright (C) 2017 ARM Ltd. */ #include <linux/uaccess.h>#include <asm/barrier.h>#include <asm/cacheflush.h> void memcpy_flushcache(void *dst, const void *src, size_t cnt){	/*	 * We assume this should not be called with @dst pointing to	 * non-cacheable memory, such that we don't need an explicit	 * barrier to order the cache maintenance against the memcpy.	 */	memcpy(dst, src, cnt);	dcache_clean_pop((unsigned long)dst, (unsigned long)dst + cnt);}EXPORT_SYMBOL_GPL(memcpy_flushcache); unsigned long __copy_user_flushcache(void *to, const void __user *from,				     unsigned long n){	unsigned long rc; 	rc = raw_copy_from_user(to, from, n); 	/* See above */	dcache_clean_pop((unsigned long)to, (unsigned long)to + n - rc);	return rc;}