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24.3. Verifying virtualization extensions
Use this section to determine whether your system has the hardware virtualization extensions. Virtualization extensions (Intel VT or AMD-V) are required for full virtualization.
Run the following command to verify the CPU virtualization extensions are available:
$ grep -E 'svm|vmx' /proc/cpuinfo
Analyze the output.
The following output contains a vmx entry indicating an Intel processor with the Intel VT extensions:
If any output is received, the processor has the hardware virtualization extensions. However in some circumstances manufacturers disable the virtualization extensions in BIOS.
The "flags:" output content may appear multiple times, once for each hyperthread, core or CPU on the system.
If the kvm package is installed. I As an additional check, verify that the kvm modules are loaded in the kernel:
# lsmod | grep kvm
If the output includes kvm_intel or kvm_amd then the kvm hardware virtualization modules are loaded and your system meets requirements. sudo
Additional output
If the libvirt package is installed, the virsh command can output a full list of virtualization system capabilities. Run virsh capabilities as root to receive the complete list.