1*09cfefb7SHuacai Chen // SPDX-License-Identifier: GPL-2.0-only 2*09cfefb7SHuacai Chen 3*09cfefb7SHuacai Chen #include <linux/uaccess.h> 4*09cfefb7SHuacai Chen #include <linux/kernel.h> 5*09cfefb7SHuacai Chen copy_from_kernel_nofault_allowed(const void * unsafe_src,size_t size)6*09cfefb7SHuacai Chenbool copy_from_kernel_nofault_allowed(const void *unsafe_src, size_t size) 7*09cfefb7SHuacai Chen { 8*09cfefb7SHuacai Chen /* highest bit set means kernel space */ 9*09cfefb7SHuacai Chen return (unsigned long)unsafe_src >> (BITS_PER_LONG - 1); 10*09cfefb7SHuacai Chen } 11