Description

In the boot on a c3-small instance on Equinix Metal running Stable 4230.2.3 we see that microcode updates work:

[    1.483112] GDS: Mitigation: Microcode
[    2.835111] microcode: Current revision: 0x00000100
[    2.840016] microcode: Updated early from: 0x000000f4
[    2.845598] microcode: Microcode Update Driver: v2.2.

But when we update to a new major version such as Beta 4426.1.0 (or Alpha) we don't see microcode updates done on boot (Reporting that the current revision is stuck on f4):

[    1.533573] GDS: Vulnerable: No microcode
[    5.932758] microcode: Current revision: 0x000000f4

(from journalctl -b0 -k | grep -i microcode)

Impact

Security mitigations are not applied, error not fixed.

Expected behavior

Same as with Stable

Additional information

The microcode setup was reworked in flatcar/scripts#2837