Not putting this in Support because I know how to fix it (downgrade), but is anybody else having trouble booting with microcode_ctl 20240910-1.20250211.1.el9_5 installed, maybe on something like an Intel Xeon Platinum 8462Y+ (Sapphire Rapids)?
Resolution came via a BIOS update (from “R08” to “R15”), in case that matters to anyone in the future. (Hi!)