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