CONFIG_AMD_NB (not configurable)

modulename: amd_nb.ko

configname: CONFIG_AMD_NB

Linux Kernel Configuration
└─>Bus options (PCI etc.)
└─>AMD_NB
In linux kernel since version 2.6.37 (release Date: 2011-01-04)
source code:
arch/x86/kernel/amd_nb.c

is selected by
CONFIG_GART_IOMMU