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