Virtuallzation Engine

1. Virtualize Intel VT-x/EPT or AMD-V/RVI : 如果需要在虚拟机里运行虚拟机，就勾选这个选项
2. Virtualize CPU performance counters : 如果需要测试CPU性能，就勾选这个选项
3. Virtualize IOMMU(IO memory management unit) : 如果要启用VBS，就勾选这个选项