描述了如何使user-mode的应用程序能进入kernel 的地址空间，并且在GDT中调用一个门调用描述符，同时不需要使用驱动。文章解释了如何在32位的处理器中进行虚拟地址到物理地址的转换，同时又描述了user-mode的应用程序如何能够找出其被分配的虚拟地址表示形式在物理地址中的位置。

这个例子程序在我的机器上做过彻底的测试，是windows XP SP2 ---- 它运行的很好而且似乎没有一点问题。-described how user-mode applications can access the kernel address space, and the GDT call a portal called descr iptors, and no use of drivers. The article explains how the 32-bit processor for virtual addresses to physical address translation, but also describes the user-mode applications can find out how to be allocated to the virtual address indicated in the form of the physical address location. Examples of this procedure in my machine done thorough testing, yes windows XP SP2-it running well but seems to have no problems.