kvm-ok (1) - Linux Manuals
kvm-ok: determine if this system is capable of running hardware accelerated KVM virtual machines (ie, possesses Virtualization Technology)
DESCRIPTIONkvm-ok is a program that will determine if the locate system can host hardware accelerated KVM virtual machines.
The program will first determine if /proc/cpuinfo contains the flags indicating that the CPU has the Virtualization Technology (VT) capability.
Next, it will check if the /dev/kvm device exists.
If running as root, it will check your CPU's MSRs to see if VT is disabled in the BIOS.
In some failure cases, kvm-ok provides hints on how you might go about enabling KVM on a system where it is arbitrarily disabled.
If KVM can be used, this script will exit 0, otherwise it will exit non-zero.
The disabled-by-bios check currently scans dmesg(1) for a message displayed by the kernel. This is not ideal, in that a long-running system will eventually roll the dmesg logs. The kernel should expose the disabled-by-bios flag in /proc/cpuinfo.
AUTHORThis manpage and the utility was written by Dustin Kirkland <kirkland [at] canonical.com> for Ubuntu systems (but may be used by others). Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 3 published by the Free Software Foundation.
On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL-3.