1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (C) 2012 Regents of the University of California
4  * Copyright (C) 2017 SiFive
5  */
6 
7 #ifndef _ASM_RISCV_MMU_CONTEXT_H
8 #define _ASM_RISCV_MMU_CONTEXT_H
9 
10 #include <linux/mm_types.h>
11 #include <asm-generic/mm_hooks.h>
12 
13 #include <linux/mm.h>
14 #include <linux/sched.h>
15 
16 void switch_mm(struct mm_struct *prev, struct mm_struct *next,
17 	struct task_struct *task);
18 
19 #define activate_mm activate_mm
activate_mm(struct mm_struct * prev,struct mm_struct * next)20 static inline void activate_mm(struct mm_struct *prev,
21 			       struct mm_struct *next)
22 {
23 	switch_mm(prev, next, NULL);
24 }
25 
26 #define init_new_context init_new_context
init_new_context(struct task_struct * tsk,struct mm_struct * mm)27 static inline int init_new_context(struct task_struct *tsk,
28 			struct mm_struct *mm)
29 {
30 #ifdef CONFIG_MMU
31 	atomic_long_set(&mm->context.id, 0);
32 #endif
33 	return 0;
34 }
35 
36 DECLARE_STATIC_KEY_FALSE(use_asid_allocator);
37 
38 #include <asm-generic/mmu_context.h>
39 
40 #endif /* _ASM_RISCV_MMU_CONTEXT_H */
41