CONFIG_INFINIBAND_HFI1 is not available for thedefaultarchitecture x86.
Result is shown for architecture 64BIT
Intel OPA Gen1 support
modulename: hfi1.ko
configname: CONFIG_INFINIBAND_HFI1
Linux Kernel Configuration
└─>Device Drivers
└─>InfiniBand support
└─>Intel OPA Gen1 support
In linux kernel since version 3.10 (release Date: 2013-06-30)
This is a low-level driver for Intel OPA Gen1 adapter.