CONFIG_PCI_MMCONFIG (not configurable)

modulename: mmconf-fam10h_64.ko

configname: CONFIG_PCI_MMCONFIG

Linux Kernel Configuration
└─>Bus options (PCI etc.)
└─>PCI_MMCONFIG
In linux kernel since version 2.6.12  
source code:
arch/x86/kernel/mmconf-fam10h_64.c
depends
CONFIG_PCI
CONFIG_X86_32
CONFIG_ACPI or CONFIG_SFI
CONFIG_PCI_GOANY or CONFIG_PCI_GOMMCONFIG or CONFIG_JAILHOUSE_GUEST or CONFIG_X86_64

is selected by
CONFIG_EDAC_SKX