
Mastering KVM Virtualization

By default, nested KVM is disabled.
Open /etc/modprobe.d/kvm.conf
as root user using a text editor like vim. If the file does not exist create /etc/modprobe.d/kvm.conf
:
kvm_intel
line if your CPU make is Intelkvm_intel nested=1
kvm_intel
line if your CPU make is AMDkvm_amd nested=1
Save the file and reboot the system. Once the system reboots verify nested by checking.
# cat /sys/module/kvm_intel/parameters/nested Y
For AMD, the file to check is /sys/module/kvm_intel/parameters/nested
:
Fig - 1
After verifying nested status, change the CPU model of the VM to match host's CPU; that is, enable Copy host CPU configuration (Fig-1). Start the VM and execute egrep '(vmx|svm)' /proc/cpuinfo
in the VM. You should be able to see vmx or svm in the output based on the host CPU model.
Your VM can now create its own virtual machines for the purpose of testing.
Change the font size
Change margin width
Change background colour