[Bug 285867] 14.2-RELEASE kernel hangs on Thinkpad T400

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=285867

--- Comment #15 from Henrich Hartzer <h@hartzer.sh> ---
(In reply to Anthony Williams from comment #14)

Very interesting! Thank you for the tip about setting hw.physmem. I did not
know that could be done.

I reinstalled the two 4GB dimms and I can confirm that I can boot the T500,
with SMP, when I use hw.physmem="4G".

I tried hw.physmem="6G" and it did not boot, unless SMP was disabled.

I'm perplexed as to why hw.physmem="4G" will work, but one 4GB dimm will not.

Either way, this is a much better workaround and hopefully gives useful
debugging data.

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