Kernel panic - not syncing: IO-APIC + timer doesn't work!

Booting a Debian 13 guest in the Canada Region (currently helios-2.0.23894) using propolis 58ab73bde89ade637b0ca8118682ee9575da6c2a failed with the following kernel panic:

Loading Linux 6.1.0-28-amd64 ...Loading Linux 6.1.0-28-amd64 ...

Loading initial ramdisk ...Loading initial ramdisk ...

[    0.072393] ..MP-BIOS bug: 8254 timer not connected to IO-APIC
[    0.401243] Kernel panic - not syncing: IO-APIC + timer doesn't work!  Boot with apic=debug and send a report.  Then try booting with the 'noapic' option.
[    0.403074] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.1.0-28-amd64 #1  Debian 6.1.119-1
[    0.404066] Hardware name: Oxide OxVM, BIOS v0.8 The Aftermath 30, 3185 YOLD
[    0.404948] Call Trace:
[    0.405282]  <TASK>
[    0.405533]  dump_stack_lvl+0x44/0x5c
[    0.406057]  panic+0x118/0x2f4
[    0.406430]  setup_IO_APIC+0x803/0x83b
[    0.406893]  ? _raw_spin_unlock_irqrestore+0x19/0x40
[    0.407443]  ? clear_IO_APIC_pin+0x169/0x240
[    0.408024]  apic_intr_mode_init+0x101/0x106
[    0.408543]  x86_late_time_init+0x20/0x34
[    0.409156]  start_kernel+0x678/0x733
[    0.409662]  secondary_startup_64_no_verify+0xe5/0xeb
[    0.410233]  </TASK>
[    0.410527] ---[ end Kernel panic - not syncing: IO-APIC + timer doesn't work!  Boot with apic=debug and send a report.  Then try booting with the 'noapic' option. ]---
    0.401243] Kernel panic - not syncing: IO-APIC + timer doesn't work!  Boot with apic=debug and send a report.  Then try booting with the 'noapic' option.
[    0.403074] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.1.0-28-amd64 #1  Debian 6.1.119-1
[    0.404066] Hardware name: Oxide OxVM, BIOS v0.8 The Aftermath 30, 3185 YOLD
[    0.404948] Call Trace:
[    0.405282]  <TASK>
[    0.405533]  dump_stack_lvl+0x44/0x5c
[    0.406057]  panic+0x118/0x2f4
[    0.406430]  setup_IO_APIC+0x803/0x83b
[    0.406893]  ? _raw_spin_unlock_irqrestore+0x19/0x40
[    0.407443]  ? clear_IO_APIC_pin+0x169/0x240
[    0.408024]  apic_intr_mode_init+0x101/0x106
[    0.408543]  x86_late_time_init+0x20/0x34
[    0.409156]  start_kernel+0x678/0x733
[    0.409662]  secondary_startup_64_no_verify+0xe5/0xeb
[    0.410233]  </TASK>
[    0.410527] ---[ end Kernel panic - not syncing: IO-APIC + timer doesn't work!  Boot with apic=debug and send a report.  Then try booting with the 'noapic' option. ]---

It's worth noting that there are about 10 other VMMs on that host and it's slow to respond to some commands (like zpool history).

Start by reproducing the Debian 13 guest boot on the Canada Region host using the reported propolis revision, then inspect the IO-APIC and timer setup involved in the boot path. Done means the guest boots without the reported kernel panic and the host remains responsive under the stated workload.