envstat drivers for CPU thermal sensors

[brook%biology.nmsu.edu@localhost (Brook Milligan)]

I would like to monitor the thermal sensors on some Xeon CPUs with
envstat.  However, no relevant drivers seem to attach with a
netbsd-5/GENERIC kernel.  I'm having a hard time understanding which
drivers are supposed to handle the sensors.  Should the acpitz driver
be attaching?

For reference, one of the CPUs identifies itself as:

cpu0: Intel Xeon (686-class), 2400.18 MHz, id 0xf29
cpu0: features 0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR>
cpu0: features 0xbfebfbff<PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX>
cpu0: features 0xbfebfbff<FXSR,SSE,SSE2,SS,HTT,TM,SBF>
cpu0: features2 0x4400<CID,xTPR>
cpu0: "Intel(R) Xeon(TM) CPU 2.40GHz"
cpu0: I-cache 12K uOp cache 8-way, D-cache 8KB 64B/line 4-way
cpu0: L2 cache 512KB 64B/line 8-way
cpu0: ITLB 4K/4M: 64 entries
cpu0: DTLB 4K/4M: 64 entries
cpu0: Initial APIC ID 1
cpu0: Cluster/Package ID 0
cpu0: SMT ID 1
cpu0: family 0f model 02 extfamily 00 extmodel 00

Thanks for your help.

Cheers,
Brook