Here are the results from my testing:

Test 1: VT Enabled in BIOS(On a machine that supports VT):

$ kvm-ok
INFO: Your CPU supports KVM extensions
INFO: /dev/kvm exists
KVM acceleration can be used


Test 2a: (run this on a system that does not support VT)

j...@jts-ubuntu:/etc/apt$ kvm-ok
INFO: Your CPU does not support KVM extensions
INFO: /dev/kvm does not exist
HINT: sudo modprobe kvm
KVM acceleration can NOT be used


Test 2b: (sudo modprobe -r kvm, and then re-run kvm-ok and see that /dev/kvm is 
gone)
Note: I had to remove the kvm_intel module on my system before I could remove 
kvm.

$ kvm-ok
INFO: Your CPU supports KVM extensions
INFO: /dev/kvm does not exist
HINT: sudo modprobe kvm
KVM acceleration can NOT be used


Test 2c: (reboot into BIOS, disable VT, and re-run kvm-ok)

$ kvm-ok
INFO: Your CPU supports KVM extensions
INFO: /dev/kvm does not exist
HINT: sudo modprobe kvm
INFO: KVM is disable by your BIOS
HINT: Enter your BIOS setup and enable Virtualization Technology (VT)
KVM acceleration can NOT be used


All of the tests worked as expected.  Only two minor things that could
be changed:

1.  The text when VT Extensions are disabled in the bios could be updated to 
say "KVM is disabled" instead of "KVM is disable".
2.  Maybe not print the text "HINT: sudo modprobe kvm in the cases" in the 
cases when it would not work anyway, such as in test 2a and 2c.

-- 
kvm disabled in bios (was: Unable to start EUC instances - no supported 
architecture for os type 'hvm')
https://bugs.launchpad.net/bugs/452323
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