arch/um/os-Linux/sys-x86_64/task_size.c - linux - Git at Google

 unsigned long os_get_task_size(unsigned long shift)
 {
 	/* The old value of CONFIG_TOP_ADDR */
 	return 0x7fc0000000;
 }
	unsigned long os_get_task_size(unsigned long shift)
	{
	/* The old value of CONFIG_TOP_ADDR */
	return 0x7fc0000000;
	}