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