问题
I am currently taking an operating systems class and I need to use qemu to run a small operating system that my professor provided. I am trying to use qemu within an ubuntu 12.04 virtual machine on virtualbox on my macbook air 5.2. I know the problems I am having probably have to do with nested virtualization but the specific error I get when I try to run qemu is:
Could not access the KVM kernel module: No such file or directory
failed to initialize KVM: no such file or directory Back to tcg accelerator.
qemu does start up the os but the window flickers quite a lot and I would like to fix the KVM problem if possible. I've done research but I can't find a solution I can understand or that works so any help would be greatly appreciated.
Also for the ubuntu virtual machine in virtualbox I have both Enable VT-x/AMD-V and Enable Nested Paging checked under Hardware Virtualization. I've also tried using
modprobe kvm-intel
and I get this error:
FATAL: Error inserting kvm_intel (/lib/modules.3.5.0-22-generic/kernel/arch/x86/kvm/kvm-intel.ko): Operation not permitted.
回答1:
Try with sudo modprobe kvm-intel.
In order to have the module automatically loaded at the startup of the virtual machine, do the following:
- Edit the corresponding file from the shell with
sudo vim /etc/modules.conf - Possibly enter your username password.
- Press the key
Gto go to the end of the document and thenoto begin inserting. - Write
kvm-inteland press Enter, producing a new line. - Press
Escto return to the Normal mode of vim. "--INSERT--" will disappear from the bottom. - Save the file and exit
vimby writing:wq.
You are done. Try to reboot and load the nested virtual machine.
回答2:
In my case, the virtualization was disabled.
So sudo modprobe kvm-intel kept giving me the following error
could not insert 'kvm_intel': Operation not supported
I just had to go in the BIOS and enable Virtualization.
来源：https://stackoverflow.com/questions/14542754/qemu-kvm-kernel-module-no-such-file-or-directory