错误提示:

[root@localhost kvm_demo]# qemu-system-x86_64 -m 1024 -smp 4-bootorder=cd -hda /home/kx/kvm_demo/xp.img -cdrom /home/kx/kvm_demo/winxp_32.iso

Could not access KVM kernel module: No such file or directory

failed to initialize KVM: No such file or directory

No accelerator found!

Try with sudo modprobe kvm-intel.

In order to have the module automatically loaded at the startup of the virtual machine, do the following:

1. Edit the corresponding file from the shell with sudo vim /etc/modules.conf
2. Possibly enter your username password.
3. Press the key G to go to the end of the document and then o to begin inserting.
4. Write kvm-intel and press Enter, producing a new line.
5. Press Esc to return to the Normal mode of vim. "--INSERT--" will disappear fromthe bottom.
6. Save the file and exit vim by writing :wq.

You are done. Try to reboot and load the nested virtual machine.

在centos上测试通过.