CONFIG_MIPS_MT_SMP is not available for thedefaultarchitecture x86.
Result is shown for architecture mips

Use 1 TC on each available VPE for SMP

modulename: msp_smp.ko

and/or

smp-mt.ko

configname: CONFIG_MIPS_MT_SMP

MIPS MT options
└─>Use 1 TC on each available VPE for SMP
In linux kernel since version 2.6.15 (release Date: 2006-01-02)  
This is a kernel model which is known a VSMP but lately has been
marketesed into SMVP.
Virtual SMP uses the processor's VPEs to implement virtual
processors. In currently available configuration of the 34K processor
this allows for a dual processor. Both processors will share the same
primary caches; each will obtain the half of the TLB for it's own
exclusive use. For a layman this model can be described as similar to
what Intel calls Hyperthreading.

For further information see http://www.linux-mips.org/wiki/34K#VSMP

source code: