CONFIG_CPU_SB1_PASS_2 is not available for thedefaultarchitecture x86.
Result is shown for architecture mips

CONFIG_CPU_SB1_PASS_2 (not configurable)

configname: CONFIG_CPU_SB1_PASS_2

Linux/MIPS Kernel Configuration
└─>Machine selection
└─>CPU_SB1_PASS_2
In linux kernel since version 2.6.12