On a new P4, this message shows up very early in the boot process:

cpu0: running without thermal monitor!

(The machine has HT, so it shows up for both CPUs.)

What does it mean, and should I be worried?  I'm running a near-generic 
MPACPI kernel.  acpitz is in the config file, but is apparently not on 
the machine.  'envstat -l' doesn't list any sensors.

Should I be concerned that the machine might overheat without some fan 
control process?  Would I be better off without ACPI?

Here are all the dmesg messages that refer to acpi.  (Yup -- new job, 
hence new machines, and hence lots of new strange and wondrous things 
to fight....)

NetBSD 2.99.12 (GENERIC.MPACPI) #0: Mon Jan  3 08:33:45 EST 2005
        smb@:/usr/BUILD/obj/sys/arch/i386/compile/GENERIC.MPACPI
cpu0: features bfebfbff<PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX>
cpu1: features bfebfbff<PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX>
acpi0 at mainbus0
acpi0: using Intel ACPI CA subsystem version 20040211
acpi0: X/RSDT: OemId <DELL  , 8400   ,00000007>, AslId <ASL ,00000061>
acpi0: SCI interrupting at int 9
acpi0: fixed-feature power button present
mpacpi: could not get bus number, assuming bus 0
ACPI Object Type 'Processor' (0x0c) at acpi0 not configured
ACPI Object Type 'Processor' (0x0c) at acpi0 not configured
acpibut0 at acpi0 (PNP0C0C): ACPI Power Button
PNP0A03 [PCI Bus] at acpi0 not configured
PNP0C01 [System Board] at acpi0 not configured
PNP0200 [AT DMA Controller] at acpi0 not configured
npx0 at acpi0 (PNP0C04)
PNP0000 [AT Interrupt Controller] at acpi0 not configured
PNP0800 [AT-style speaker sound] at acpi0 not configured
PNP0B00 [AT Real-Time Clock] at acpi0 not configured
PNP0100 [AT Timer] at acpi0 not configured
fdc0 at acpi0 (PNP0700)
pckbc0 at acpi0 (PNP0303): kbd port
pckbc1 at acpi0 (PNP0F13): aux port
lpt0 at acpi0 (PNP0401)
com0 at acpi0 (PNP0501-1)
PNP0C0F [PCI interrupt link device] at acpi0 not configured
PNP0C0F [PCI interrupt link device] at acpi0 not configured
PNP0C0F [PCI interrupt link device] at acpi0 not configured
PNP0C0F [PCI interrupt link device] at acpi0 not configured
PNP0C0F [PCI interrupt link device] at acpi0 not configured
PNP0C0F [PCI interrupt link device] at acpi0 not configured
PNP0C0F [PCI interrupt link device] at acpi0 not configured
PNP0C01 [System Board] at acpi0 not configured
PNP0C02 [Plug and Play motherboard register resources] at acpi0 not configured
PNP0103 at acpi0 not configured


		--Prof. Steven M. Bellovin, http://www.cs.columbia.edu/~smb