LXR linux-bk/arch/um/kernel/tt/mem.c

   1/* 
   2 * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
   3 * Licensed under the GPL
   4 */
   5
   6#include "linux/stddef.h"
   7#include "linux/config.h"
   8#include "linux/mm.h"
   9#include "asm/uaccess.h"
  10#include "mem_user.h"
  11#include "kern_util.h"
  12#include "user_util.h"
  13#include "kern.h"
  14#include "tt.h"
  15
  16void before_mem_tt(unsigned long brk_start)
  17{
  18        if(!jail || debug)
  19                remap_data(UML_ROUND_DOWN(&_stext), UML_ROUND_UP(&_etext), 1);
  20        remap_data(UML_ROUND_DOWN(&_sdata), UML_ROUND_UP(&_edata), 1);
  21        remap_data(UML_ROUND_DOWN(&__bss_start), UML_ROUND_UP(&_end), 1);
  22}
  23
  24#ifdef CONFIG_HOST_2G_2G
  25#define TOP 0x80000000
  26#else
  27#define TOP 0xc0000000
  28#endif
  29
  30#define SIZE ((CONFIG_NEST_LEVEL + CONFIG_KERNEL_HALF_GIGS) * 0x20000000)
  31#define START (TOP - SIZE)
  32
  33unsigned long set_task_sizes_tt(int arg, unsigned long *host_size_out, 
  34                                unsigned long *task_size_out)
  35{
  36        /* Round up to the nearest 4M */
  37        *host_size_out = ROUND_4M((unsigned long) &arg);
  38        *task_size_out = START;
  39        return(START);
  40}
  41
  42/*
  43 * Overrides for Emacs so that we follow Linus's tabbing style.
  44 * Emacs will notice this stuff at the end of the file and automatically
  45 * adjust the settings for this buffer only.  This must remain at the end
  46 * of the file.
  47 * ---------------------------------------------------------------------------
  48 * Local variables:
  49 * c-file-style: "linux"
  50 * End:
  51 */
  52