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

Capture bus trace before bus error

configname: CONFIG_SIBYTE_BW_TRACE

Linux Kernel Configuration
└─>Capture bus trace before bus error
In linux kernel since version 2.6.12  
Run a continuous bus trace, dumping the raw data as soon as
a ZBbus error is detected. Cannot work if ZBbus profiling
is turned on, and also will interfere with JTAG-based trace
buffer activity. Raw buffer data is dumped to console, and
must be processed off-line.