b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame] | 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 | static inline void enter_lazy_tlb(struct mm_struct *mm, |
| 17 | struct task_struct *task) |
| 18 | { |
| 19 | } |
| 20 | |
| 21 | /* Initialize context-related info for a new mm_struct */ |
| 22 | static inline int init_new_context(struct task_struct *task, |
| 23 | struct mm_struct *mm) |
| 24 | { |
| 25 | return 0; |
| 26 | } |
| 27 | |
| 28 | static inline void destroy_context(struct mm_struct *mm) |
| 29 | { |
| 30 | } |
| 31 | |
| 32 | void switch_mm(struct mm_struct *prev, struct mm_struct *next, |
| 33 | struct task_struct *task); |
| 34 | |
| 35 | static inline void activate_mm(struct mm_struct *prev, |
| 36 | struct mm_struct *next) |
| 37 | { |
| 38 | switch_mm(prev, next, NULL); |
| 39 | } |
| 40 | |
| 41 | static inline void deactivate_mm(struct task_struct *task, |
| 42 | struct mm_struct *mm) |
| 43 | { |
| 44 | } |
| 45 | |
| 46 | #endif /* _ASM_RISCV_MMU_CONTEXT_H */ |