(In reply to Borislav Petkov from comment #23) > Yap, that rings a bell. I'm willing to put some money on this: > > ff8560512b8d ("x86/boot/smp: Don't try to poke disabled/non-existent APIC") > > which is already queud for stable. > > Wanna apply it ontop of your kernel, rebuild and retest? This one I suppose: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ff8560512b8d4b7ca3ef4fd69166634ac30b2525 I will try it out and report back.