get SMM(system management mode) based task_struct

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <asm/kdebug.h>
#include <linux/smp.h>
#include <linux/sched.h>
#include <linux/kallsyms.h>
#include <asm/ptrace.h>
#include <asm/asm-offsets.h>
#include <asm/current.h>

unsigned int ds;
//struct pt_regs;
module_param(ds,int,0);

static int __init root_init(void)
{
	//struct pt_regs own;
	struct pt_regs *ptr,p;
	ptr=&p;
	__asm__ ("mov $1,%%eax"
		:"=r"(ds)
		:
	);
	//__asm__("mov %fs,%rax");
	//asm ("mov %r13,%eax");
	printk("DS:%5x",ds);
	printk(KERN_INFO "addr %lx",(long unsigned int)&(ptr->r13)); //point to current task_struct (in root privilige)
	//printk(KERN_INFO "addr %d",FRAME_SIZE);
	return 0;
}

static void __exit root_cleanup(void)
{

}

module_init(root_init);
module_exit(root_cleanup);
===============================================================
DS:    0
addr ffff88003756be78