AMD CPUs Are Safe For Late-Loading Microcode, Will No Longer Taint The Linux Kernel
Intel processors should have any CPU microcode updates loaded early during the Linux boot process to avoid various known issues. When "late loading" CPU microcode after the system is up and running, various issues can happen on Intel processors that led them to mark the Linux kernel as tainted under such conditions. Tainting the kernel also happened when late-loading microcode on AMD CPUs but now that's been deemed unnecessary and late-loading CPU microcode on AMD processors is reportedly safe...