blob: f8a100770691c3b7107b229211ed4bf159f583c8 [file] [log] [blame]
/* SPDX-License-Identifier: GPL-2.0 */
* Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,}.com)
#ifndef __UM_MMU_CONTEXT_H
#define __UM_MMU_CONTEXT_H
#include <linux/sched.h>
#include <linux/mm_types.h>
#include <linux/mmap_lock.h>
#include <asm/mmu.h>
extern void uml_setup_stubs(struct mm_struct *mm);
* Needed since we do not use the asm-generic/mm_hooks.h:
static inline int arch_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm)
return 0;
extern void arch_exit_mmap(struct mm_struct *mm);
static inline void arch_unmap(struct mm_struct *mm,
unsigned long start, unsigned long end)
static inline bool arch_vma_access_permitted(struct vm_area_struct *vma,
bool write, bool execute, bool foreign)
/* by default, allow everything */
return true;
* end asm-generic/mm_hooks.h functions
extern void force_flush_all(void);
#define activate_mm activate_mm
static inline void activate_mm(struct mm_struct *old, struct mm_struct *new)
* This is called by fs/exec.c and sys_unshare()
* when the new ->mm is used for the first time.
mmap_write_lock_nested(new, SINGLE_DEPTH_NESTING);
static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
struct task_struct *tsk)
unsigned cpu = smp_processor_id();
if(prev != next){
cpumask_clear_cpu(cpu, mm_cpumask(prev));
cpumask_set_cpu(cpu, mm_cpumask(next));
if(next != &init_mm)
#define init_new_context init_new_context
extern int init_new_context(struct task_struct *task, struct mm_struct *mm);
#define destroy_context destroy_context
extern void destroy_context(struct mm_struct *mm);
#include <asm-generic/mmu_context.h>