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