blob: 4fb9ea3c5bc9a78a313a320a1f7a263074c6bcb2 [file] [log] [blame]
/* mmu_context.h: MMU context management routines
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
#include <linux/config.h>
#include <asm/setup.h>
#include <asm/page.h>
#include <asm/pgalloc.h>
static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
extern int init_new_context(struct task_struct *tsk, struct mm_struct *mm);
extern void change_mm_context(mm_context_t *old, mm_context_t *ctx, pgd_t *_pgd);
extern void destroy_context(struct mm_struct *mm);
#define init_new_context(tsk, mm) ({ 0; })
#define change_mm_context(old, ctx, _pml4) do {} while(0)
#define destroy_context(mm) do {} while(0)
#define switch_mm(prev, next, tsk) \
do { \
if (prev != next) \
change_mm_context(&prev->context, &next->context, next->pgd); \
} while(0)
#define activate_mm(prev, next) \
do { \
change_mm_context(&prev->context, &next->context, next->pgd); \
} while(0)
#define deactivate_mm(tsk, mm) \
do { \
} while(0)