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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * Copyright (C) 2012 Regents of the University of California
- * Copyright (C) 2017 SiFive
- */
- #ifndef _ASM_RISCV_MMU_CONTEXT_H
- #define _ASM_RISCV_MMU_CONTEXT_H
- #include <linux/mm_types.h>
- #include <asm-generic/mm_hooks.h>
- #include <linux/mm.h>
- #include <linux/sched.h>
- #include <asm/tlbflush.h>
- #include <asm/cacheflush.h>
- #include <asm/asid.h>
- #define ASID_MASK ((1 << SATP_ASID_BITS) - 1)
- #define cpu_asid(mm) (atomic64_read(&mm->context.asid) & ASID_MASK)
- #define init_new_context(tsk,mm) ({ atomic64_set(&(mm)->context.asid, 0); 0; })
- static inline void enter_lazy_tlb(struct mm_struct *mm,
- struct task_struct *task)
- {
- }
- static inline void destroy_context(struct mm_struct *mm)
- {
- }
- void switch_mm(struct mm_struct *prev, struct mm_struct *next,
- struct task_struct *task);
- void check_and_switch_context(struct mm_struct *mm, unsigned int cpu);
- static inline void activate_mm(struct mm_struct *prev,
- struct mm_struct *next)
- {
- switch_mm(prev, next, NULL);
- }
- static inline void deactivate_mm(struct task_struct *task,
- struct mm_struct *mm)
- {
- }
- #endif /* _ASM_RISCV_MMU_CONTEXT_H */
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