boot fails on Table SSDT at 0x...

Hi current_at_FreeBSD.org
I was running
	FreeBSD lapr.js.berklix.net 12.0-CURRENT FreeBSD 12.0-CURRENT
	#12753: Tue Nov 22 23:31:24 CET 2016
	jhs_at_lapr.js.berklix.net:/data/release/12.0-CURRENT/usr/src/sys/amd64/compile/LAPR.small
	amd64
I updated to 
	.ctm_status	src-cur 12757
	.svn_revision	309126
did a make world, built a new custom kernel with same config as before & now
laptop boot fails after
	Table SSDT at 0x...
	ACPI: No SRAT table found

I took a pic of frozen screen, & I have svn here, I need to research
& provide more info to whoever ? so this just initial info to whoever's
working in the area.  Debug suggestions & syntax welcome. I'll build
a generic kernel next.

If I may be slow responding, sorry, DSL modem problems here too, hence 
getting an initial error report out while I can.

Cheers,
Julian
-- 
Julian Stacey, BSD Linux Unix Sys Eng Consultant Munich
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