On Sun, Feb 14, 2021 at 02:01:14PM +0100, Leon Dietrich wrote: > Hi there, > > I already worked around the issue myself. I'm just writing this here in > case someone else may have the same issue and is seeking an answer. > > > I recently upgraded the intel cpu microcode update package. Since then > the boot process hang at the stage where the other cpu cores where > enabled (shortly after enabling acpi). In order to resolve the issue one > has to boot in safe mode (not single user mode!) and comment (or remove) > the lines enabling the cpu microcode update on boot in > /boot/loader.conf. One can and should reboot then. > > After making these changes the system boots again and all cores are > started and SMT works as well. One should note that one's not running > the newer microcode (including some security-) fixes. Having > microcode_update_enable="YES" in /etc/rc.conf doesn't prevent booting > and does not cause noticeable instability. > > For reference: Im running FreeBSD 12.1 on a supermicro embedded board > with intel xeon E3-1585L v5 cpus. > > > I hope someone will find this info useful.
I see that r347931 was not merged to stable/12 branch, but the lockless delayed invalidation changes were indeed present in 12.1. Could you see if the hang persists when boot-time ucode loading is enabled and vm.pmap.di_locked=1 is configured? Note that you could apply both configurations at the loader prompt, i.e., without having to edit loader.conf and boot in safe mode to revert the change. _______________________________________________ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
