Bug ID: 225799
           Summary: HP P2-1310: System hangs on boot unless
                    kern.smp.disabled=1 is set
           Product: Base System
           Version: 11.1-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern

Created attachment 190474
Boot log from successful boot

System is an HP P2-1310 box with "AMD E2-1800 Accelerated Processor".

When running FreeBSD 11.1, the system will hang on boot unless
"kern.smp.disabled=1" is in /boot/loader.conf or unless "Safe Mode" (which adds
that option plus some others) is selected.

This bug seems like it is probably related to (Bug 220277), however,
compiling a kernel without EARLY_AP_STARTUP does not help, and applying the
code patch to OsdSchedule.c from that patch does not help either.

The bug seems to exist in the current (as of a few days ago) 11 STABLE as well.

As I want to run vbox from time to time, I would really like all my cores to be

Attached is /var/run/dmesg.boot from a successful boot (ie kern.smp.disabled=1
is set).

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