arch/openrisc/include/asm/mmu_context.h

   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