[Bug 201624] BTX halted using 10.x with root on ZFS supermicro AMD

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=201624

--- Comment #2 from Mike Selner <mike.selner at gmail.com> ---
UPDATE
I was able to identify the cause of the problem.
There is a BIOS setting WHEA (Windows Hardware Error Architecture) under the
ACPI mode section. If set to ENABLED, the system will BTX HALT as above. If
WHEA is set to DISABLED, the system boots and runs fine.

If you set the BIOS settings to "Optimal" it will enable WHEA among other
things. I used the the Optimal settings and then set WHEA to DISABLED.  The
setting is under BIOS / Advanced / BIOS features / ACPI Mode / General WHEA
configuration / (choose Enabled or Disabled).

Since it worked fine on 9.x and 11.x, can it be fixed in the BTX loader for
10.x?

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