Hey,
On dg., des. 14 2025, Robert Ricci wrote:
I've run into what appears to be a regression in vmm/bhyve in
FreeBSD 15, and could use some help tracking it down.
I upgraded my AMD Zen 4 machine (via source) from stable/14
(sometime post-14.3) to stable/15 (currently running -stable
from today). I had some VMs (Linux guests of various flavors)
that were running fine before the update. After the update, they
won't start.
The behavior is: the bootloader seems to work fine (eg. I can
run grub-bhyve, it runs to completion and exits). However once I
start bhyve itself, it just burns up a CPU (note: just one, no
matter how many vCPUs) - I get nothing on serial console,
nothing on the fbuf if I enable it.
I think I'm seeing this as well, did you manage to solve it?
For me it doesn't matter whether I use uefi or grub bootlaoders.
Here is my (suboptimal) temporary workaround:
- start a tmux
- run vm start -f VM-name on each tmux tab (somehow this works)
I also tried with vm-bhyve-devel-1.7.0_1 and have the same
symptoms you mentioned.
Cheers,
--
Evilham
