查找idt table 所對應的page table in Linux

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/types.h>
#include <asm/pgtable.h>
#include <asm/current.h>
#include <asm/desc_defs.h>
MODULE_LICENSE("GPL");
struct desc_ptr idt;
int init_module(void)
{
        asm volatile ("sidt %0" : "=m" (idt));
        unsigned int level;
        pte_t *pte;
        pte = lookup_address( idt.address, &level);
        printk("level:%d
", level);
        printk("pte_val(*pte):%lx
", pte_val(*pte));
        printk("pte_val(*pte)& _PAGE_PRESENT:%d
", pte_val(*pte)& _PAGE_PRESENT);
        return 0;
}
void cleanup_module(void)
{
        printk("clean_module : fixmap
");
}