1 /* mmu_context.h: MMU context management routines
3 * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
12 #ifndef _ASM_MMU_CONTEXT_H
13 #define _ASM_MMU_CONTEXT_H
15 #include <asm/setup.h>
17 #include <asm/pgalloc.h>
18 #include <asm-generic/mm_hooks.h>
20 static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
25 extern int init_new_context(struct task_struct *tsk, struct mm_struct *mm);
26 extern void change_mm_context(mm_context_t *old, mm_context_t *ctx, pgd_t *_pgd);
27 extern void destroy_context(struct mm_struct *mm);
30 #define init_new_context(tsk, mm) ({ 0; })
31 #define change_mm_context(old, ctx, _pml4) do {} while(0)
32 #define destroy_context(mm) do {} while(0)
35 #define switch_mm(prev, next, tsk) \
38 change_mm_context(&prev->context, &next->context, next->pgd); \
41 #define activate_mm(prev, next) \
43 change_mm_context(&prev->context, &next->context, next->pgd); \
46 #define deactivate_mm(tsk, mm) \