some HTT questions

Hi all,

I'm currently working on my first P4 ever.
I'm planning a colo production machine with FreeBSD 5.2 (RC2 atm).
The info of dmesg about the CPU shows:

CPU: Intel(R) Pentium(R) 4 CPU 2.40GHz (2394.13-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0xf27  Stepping = 7
  Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>

So I think this CPU should be HyperThreading capable which gets hardened by 
those lines:

	acpi_cpu0: <CPU> on acpi0
	acpi_cpu1: <CPU> on acpi0

But the next line gives my an error about CPU1:

	device_probe_and_attach: acpi_cpu1 attach returned 6

This line shows up a second time between probing of sio and nxp0.

Ny my guess was that HTT should be enabled in the BIOS but the BIOS has no 
entry about HTT.

How can I use HTT and are my assumptions correct?

Thanks,

-Harry