maccess.c

 1// SPDX-License-Identifier: GPL-2.0-only
 2
 3#include <linux/uaccess.h>
 4#include <linux/kernel.h>
 5
 6bool copy_from_kernel_nofault_allowed(const void *unsafe_src, size_t size)
 7{
 8	/* highest bit set means kernel space */
 9	return (unsigned long)unsafe_src >> (BITS_PER_LONG - 1);
10}