CONFIG_HAVE_SMP is not available for thedefaultarchitecture x86.
Result is shown for architecture xtensa
System Supports SMP (MX)
configname: CONFIG_HAVE_SMP
Linux Kernel Configuration
└─>Processor type and features
└─>System Supports SMP (MX)
In linux kernel since version 3.1 (release Date: 2011-10-24)
This option is used to indicate that the system-on-a-chip (SOC)
supports Multiprocessing. Multiprocessor support implemented above
the CPU core definition and currently needs to be selected manually.
Multiprocessor support is implemented with external cache and
interrupt controllers.
The MX interrupt distributer adds Interprocessor Interrupts
and causes the IRQ numbers to be increased by 4 for devices
like the open cores ethernet driver and the serial interface.
You still have to select "Enable SMP" to enable SMP on this SOC.
supports Multiprocessing. Multiprocessor support implemented above
the CPU core definition and currently needs to be selected manually.
Multiprocessor support is implemented with external cache and
interrupt controllers.
The MX interrupt distributer adds Interprocessor Interrupts
and causes the IRQ numbers to be increased by 4 for devices
like the open cores ethernet driver and the serial interface.
You still have to select "Enable SMP" to enable SMP on this SOC.