arch/um/kernel/skas/mmu.c

   1 /*
   2  * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
   3  * Licensed under the GPL
   4  */
   5
   6 #include "linux/sched.h"
   7 #include "linux/list.h"
   8 #include "linux/spinlock.h"
   9 #include "linux/slab.h"
  10 #include "asm/current.h"
  11 #include "asm/segment.h"
  12 #include "asm/mmu.h"
  13 #include "os.h"
  14 #include "skas.h"
  15
  16 int init_new_context_skas(struct task_struct *task, struct mm_struct *mm)
  17 {
  18         int from;
  19
  20         if((current->mm != NULL) && (current->mm != &init_mm))
  21                 from = current->mm->context.skas.mm_fd;
  22         else from = -1;
  23
  24         mm->context.skas.mm_fd = new_mm(from);
  25         if(mm->context.skas.mm_fd < 0){
  26                 printk("init_new_context_skas - new_mm failed, errno = %d\n",
  27                        mm->context.skas.mm_fd);
  28                 return(mm->context.skas.mm_fd);
  29         }
  30
  31         return(0);
  32 }
  33
  34 void destroy_context_skas(struct mm_struct *mm)
  35 {
  36         os_close_file(mm->context.skas.mm_fd);
  37 }
  38
  39 /*
  40  * Overrides for Emacs so that we follow Linus's tabbing style.
  41  * Emacs will notice this stuff at the end of the file and automatically
  42  * adjust the settings for this buffer only.  This must remain at the end
  43  * of the file.
  44  * ---------------------------------------------------------------------------
  45  * Local variables:
  46  * c-file-style: "linux"
  47  * End:
  48  */