HTT on single CPU?

M. Warner Losh imp at
Wed Jul 9 15:03:25 PDT 2003

In message: <3F0C8F20.6040102 at>
            Jens Rehsack <rehsack at> writes:
: M. Warner Losh wrote:
: > In message: <20030709150718.GC28375 at Odin.AC.HMC.Edu>
: >             Brooks Davis <brooks at> writes:
: > : P4's below ~3.1GHz do not actually provide logical CPU support.
: > 
: > We have several 2.4GHz parts that appear to contradict this
: > statement.  However, we can't use HTT w/o a proper motherboard that
: > supports HTT CPUs.
: How can I found out whether a board supports HTT or not?
: I haven't seen it in none description I checked. Are some
: chipsets (865, 875) always ready or is the bios programmer
: the guy who must activate this feature?

Boot a SMP kernel.  If you get a panic, your board doesn't support
it. :-)  We've seen some mobos that just work, while others have
a really ****ed up MPTABLE which makes it hard/impossible for FreeBSD
to support things.


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