SMP goes away after installworld (4.8-STABLE)

[Mark Kent]

I've concluded now that SMP support is a goner in the current
4.8-stable.

I did an install of 4.8-release, made a SMP kernel, verified
it works (mptable, top, boot sequence).

Then I did a complete cvsup (from cvsup10), then the following

 chflags -R noschg /usr/obj/usr
 rm -rf /usr/obj/usr
 cd /usr/src
 make cleandir
 make cleandir

 cd /usr/src
 make buildworld
 make buildkernel KERNCONF=MDK
 make installkernel KERNCONF=MDK
 make installworld
 mergemaster
 cd /dev
 sh MAKEDEV all
 cd /usr/src/release/sysinstall
 make all install

No evidence of SMP (mptable, top, boot sequence).
So, I double-checked the config
(http://a.mainstreet.net/MDK)
rebuilt a kernel, rebooted, same result (no SMP).

Anyone else either have SMP working on 4.8-stable
and/or knows that it doesn't?

Thanks,
-mark