当KVM构建于Linux操作系统，您需要一个现代的Linux内核版本来使用它。KVM要求机器扩展性。主流Linux版本2.6.20及以上版本均包括KVM的内核组件。但是即使您的Linux发行版拥有KVM，您的硬件配置也许并不配合。Intel VT 或者 AMD-V支持可以默认禁用。
转载请注明：
英文原文：
By Jack M. Germain
LinuxInsider 01/30/13 5:00 AM PTWhile the KVM infrastructure is built into the Linux OS, you need a modern version of the Linux kernel to use this virtual machine. KVM requires machine extensions. The kernel component of KVM is included in mainline Linux as of version 2.6.20. Even if your Linux distro has the stuff inside, your hardware configuration might not be cooperating. Intel VT or AMD-V support could be disabled by default.