On Tue, Nov 18, 2025 at 4:16 AM Takashi Kajinami <kajinamit@oss.nttdata.com> wrote:

Hi,

I've been trying to implement a few tempest tests to verify functionality
of UEFI boot and secure boot, and I noticed that cirros, which is used as a primary
guest image for tests, do not support UEFI boot.

I'm wondering if anyone can share a good light-weight guest image used in their
own tests of these features ? I guess that ubuntu guest image might be a primary
choice (given the fact that ubuntu is the default operating system for tests) but
I'm wondering if we have more light-weight one.

I don't think it's what you're asking for, but just in case... Kerbside has a lightweight UEFI test image to help verify console latency. It does this by running a UEFI binary instead of booting into an operating system at all. It would be relatively easy to therefore detect that UEFI is working by inspecting the instance's SPICE console. It however does not do secure boot.

Cheers,

Michael