Pcanel/V2-a VMM Architecture Based On Intel VT-x

With the rapidly increasing performance of personal computer hardware, through the virtual technology to create a number of isolated computational domains is becoming an important future development trend of personal computers.Because of the IA-32 architecture, the traditional software virtual technology makes the design and implementation of VMM greater difficulty. We has designed a VMM based on Intel VT-x technology—Pcanel /V2. This architecture uses the latest hardware virtual technology to configure a controllable virtual running environment by a control structure called VMCS, and can let multiple guest operating systems whose source code are unmodified run directly above it while maintain a higher efficiency than traditional software virtual technology. We achieve a virtualization on processor, equipment I/O, memory management, and so on module to control the access to hardware resources by the guest operating system while let them run normally and can carry on corresponding processing for each kind of situation which appears in the guest operating system running. Through Pcanel/V2, we have realized the basic purpose of hardware virtualization, and laid a foundation for further optimization for the future.The paper first reviews the current mainstream software virtualization technology, focuses on their shortcomings. And then we illuminate some basic concepts of the hardware virtualization technology —VT-x. Then we depict the overall thinking of Pcanel/V2 from two aspects of the architecture and operation flow. Finally, we have the various components module for a detailed description and some senior issues discussed. Finally we have conducted the research to the movement example.