162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0-only 262306a36Sopenharmony_ci 362306a36Sopenharmony_ci#include <linux/uaccess.h> 462306a36Sopenharmony_ci#include <linux/kernel.h> 562306a36Sopenharmony_ci 662306a36Sopenharmony_cibool copy_from_kernel_nofault_allowed(const void *unsafe_src, size_t size) 762306a36Sopenharmony_ci{ 862306a36Sopenharmony_ci /* highest bit set means kernel space */ 962306a36Sopenharmony_ci return (unsigned long)unsafe_src >> (BITS_PER_LONG - 1); 1062306a36Sopenharmony_ci} 11