[WBEL-users] Hyperthreading not enabled in WB kernels?

[Vincent.Raffensberger@dtn.com]

While testing whitebox I noticed that hyperthreading doesn't appear to be 
enabled in the kernel. 
This system is a dual Xeon with HT enabled and showing in the BIOS.
This same box has run RH8.0 and Fedora Core1 and they both showed four 
"processors" and "siblings: 2" in /proc/cpuinfo.
As recommended elsewhere, I tried appending "apcismp=force" to the kernel, 
but that didn't change anything.

Are there any other users seeing the same type of thing?

Here's some relevant info from the system:
[root@wbel3 root]# uname -a
Linux wbel3 2.4.21-9.0.3.ELsmp #1 SMP Sat Apr 24 21:45:44 EDT 2004 i686 
i686 i386 GNU/Linux
[root@wbel3 root]# egrep proc\|name\|sib\|flags /proc/cpuinfo
processor       : 0
model name      : Intel(R) Xeon(TM) CPU 2.40GHz
siblings        : 1
flags           : 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 ht tm
processor       : 1
model name      : Intel(R) Xeon(TM) CPU 2.40GHz
siblings        : 1
flags           : 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 ht tm
[root@wbel3 root]# dmesg | egrep 
SMP\|Processor\|command\|CPU[0-9]\|unexpected
Linux version 2.4.21-9.0.3.ELsmp (buildsys@bob) (gcc version 3.2.3 
20030502 (Red Hat Linux 3.2.3-20)) #1 SMP Sat Apr 24 21:45:44 EDT 2004
found SMP MP-table at 000ff780
Intel MultiProcessor Specification v1.4
Processor #0 Pentium 4(tm) XEON(tm) APIC version 20
Processor #6 Pentium 4(tm) XEON(tm) APIC version 20
Processors: 2
Kernel command line: BOOT_IMAGE=linux ro 
BOOT_FILE=/boot/vmlinuz-2.4.21-9.0.3.ELsmp root=LABEL=/
CPU: Physical Processor ID: 0
CPU: Physical Processor ID: 0
CPU0: Intel(R) Xeon(TM) CPU 2.40GHz stepping 09
CPU: Physical Processor ID: 3
CPU1: Intel(R) Xeon(TM) CPU 2.40GHz stepping 09
An unexpected IO-APIC was found. If this kernel release is less than
CPU0<T0:1333360,T1:888896,D:11,S:444453,C:1333360>
CPU1<T0:1333360,T1:444448,D:6,S:444453,C:1333360>