| /* SPDX-License-Identifier: GPL-2.0 */ | |
| // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. | |
| #ifndef __ASM_CSKY_SEGMENT_H | |
| #define __ASM_CSKY_SEGMENT_H | |
| typedef struct { | |
| unsigned long seg; | |
| } mm_segment_t; | |
| #define KERNEL_DS ((mm_segment_t) { 0xFFFFFFFF }) | |
| #define USER_DS ((mm_segment_t) { 0x80000000UL }) | |
| #define get_fs() (current_thread_info()->addr_limit) | |
| #define set_fs(x) (current_thread_info()->addr_limit = (x)) | |
| #define uaccess_kernel() (get_fs().seg == KERNEL_DS.seg) | |
| #endif /* __ASM_CSKY_SEGMENT_H */ |