Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #ifndef __ASM_CSKY_SEGMENT_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #define __ASM_CSKY_SEGMENT_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) typedef struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 	unsigned long seg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) } mm_segment_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define KERNEL_DS		((mm_segment_t) { 0xFFFFFFFF })
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define USER_DS			((mm_segment_t) { 0x80000000UL })
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define get_fs()		(current_thread_info()->addr_limit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define set_fs(x)		(current_thread_info()->addr_limit = (x))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define uaccess_kernel()	(get_fs().seg == KERNEL_DS.seg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #endif /* __ASM_CSKY_SEGMENT_H */