How to see the activation status of VT-d and VT-x on Coreboot laptops?

Installation guide says that VT-d and VT-x have to be made sure to be activated in computer’s BIOS/UEFI.

However, my Coreboot’ed x220 has only “Press ESC for boot menu” during the booting process, and then a few seconds later it defaults to my current Xubuntu OS.

Where can I check to see if the VT-d and VT-x are activated in my Coreboot’ed machine?

Normally it will be on

When you boot into your current OS, as root run

dmesg | grep DMAR

look out for somehting like:

Enabled IRQ remapping

if you got that, VT-d is enabled.

Thats actually the SeaBIOS payload, not coreboot :wink:

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:joy: yeah, excuse my newbieness…

Thanks for the answer. I will try the dmesg command.

What about VT-x? Can I see explicitly if it is enabled, too?

cat /proc/cpuinfo | grep vmx

What should I see at the output of that command? I am seeing a few dozen lines with cryptic abbreviations, and quite a few instances of vmx higlighted in red.

If you see vmx, its enabled.

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Got it. Thanks.

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