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Linux/arch/openrisc/include/asm/mmu_context.h

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  1 /* SPDX-License-Identifier: GPL-2.0-or-later */
  2 /*
  3  * OpenRISC Linux
  4  *
  5  * Linux architectural port borrowing liberally from similar works of
  6  * others.  All original copyrights apply as per the original source
  7  * declaration.
  8  *
  9  * OpenRISC implementation:
 10  * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
 11  * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
 12  * et al.
 13  */
 14 
 15 #ifndef __ASM_OPENRISC_MMU_CONTEXT_H
 16 #define __ASM_OPENRISC_MMU_CONTEXT_H
 17 
 18 #include <asm-generic/mm_hooks.h>
 19 
 20 extern int init_new_context(struct task_struct *tsk, struct mm_struct *mm);
 21 extern void destroy_context(struct mm_struct *mm);
 22 extern void switch_mm(struct mm_struct *prev, struct mm_struct *next,
 23                       struct task_struct *tsk);
 24 
 25 #define deactivate_mm(tsk, mm)  do { } while (0)
 26 
 27 #define activate_mm(prev, next) switch_mm((prev), (next), NULL)
 28 
 29 /* current active pgd - this is similar to other processors pgd
 30  * registers like cr3 on the i386
 31  */
 32 
 33 extern volatile pgd_t *current_pgd[]; /* defined in arch/openrisc/mm/fault.c */
 34 
 35 static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
 36 {
 37 }
 38 
 39 #endif
 40 

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