CONFIG_X86 (not configurable)

modulename: setup-bus.ko

and/or

blacklist.ko

and/or

fallback.ko

configname: CONFIG_X86

Linux Kernel Configuration
└─>X86
In linux kernel since version 2.6.12  
source code:
drivers/pci/setup-bus.c
selects
CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
CONFIG_HAVE_AOUT
CONFIG_HAVE_UNSTABLE_SCHED_CLOCK
CONFIG_ARCH_SUPPORTS_NUMA_BALANCING
CONFIG_ARCH_WANTS_PROT_NUMA_PROT_NONE
CONFIG_HAVE_IDE
CONFIG_HAVE_OPROFILE
CONFIG_HAVE_PCSPKR_PLATFORM
CONFIG_HAVE_PERF_EVENTS
CONFIG_HAVE_IOREMAP_PROT
CONFIG_HAVE_KPROBES
CONFIG_HAVE_MEMBLOCK
CONFIG_HAVE_MEMBLOCK_NODE_MAP
CONFIG_ARCH_DISCARD_MEMBLOCK
CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB
CONFIG_ARCH_WANT_FRAME_POINTERS
CONFIG_HAVE_DMA_ATTRS
CONFIG_HAVE_DMA_CONTIGUOUS
CONFIG_HAVE_KRETPROBES
CONFIG_HAVE_OPTPROBES
CONFIG_HAVE_KPROBES_ON_FTRACE
CONFIG_HAVE_FTRACE_MCOUNT_RECORD
CONFIG_HAVE_FENTRY
CONFIG_HAVE_C_RECORDMCOUNT
CONFIG_HAVE_DYNAMIC_FTRACE
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS
CONFIG_HAVE_FUNCTION_TRACER
CONFIG_HAVE_FUNCTION_GRAPH_TRACER
CONFIG_HAVE_FUNCTION_GRAPH_FP_TEST
CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST
CONFIG_HAVE_SYSCALL_TRACEPOINTS
CONFIG_SYSCTL_EXCEPTION_TRACE
CONFIG_HAVE_KVM
CONFIG_HAVE_ARCH_KGDB
CONFIG_HAVE_ARCH_TRACEHOOK
CONFIG_HAVE_GENERIC_DMA_COHERENT
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
CONFIG_USER_STACKTRACE_SUPPORT
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API
CONFIG_HAVE_DMA_API_DEBUG
CONFIG_HAVE_KERNEL_GZIP
CONFIG_HAVE_KERNEL_BZIP2
CONFIG_HAVE_KERNEL_LZMA
CONFIG_HAVE_KERNEL_XZ
CONFIG_HAVE_KERNEL_LZO
CONFIG_HAVE_HW_BREAKPOINT
CONFIG_HAVE_MIXED_BREAKPOINTS_REGS
CONFIG_PERF_EVENTS
CONFIG_HAVE_PERF_EVENTS_NMI
CONFIG_HAVE_PERF_REGS
CONFIG_HAVE_PERF_USER_STACK_DUMP
CONFIG_HAVE_DEBUG_KMEMLEAK
CONFIG_ANON_INODES
CONFIG_HAVE_ALIGNED_STRUCT_PAGE
CONFIG_HAVE_CMPXCHG_LOCAL
CONFIG_HAVE_CMPXCHG_DOUBLE
CONFIG_HAVE_ARCH_KMEMCHECK
CONFIG_HAVE_USER_RETURN_NOTIFIER
CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE
CONFIG_HAVE_ARCH_JUMP_LABEL
CONFIG_HAVE_TEXT_POKE_SMP
CONFIG_HAVE_GENERIC_HARDIRQS
CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
CONFIG_SPARSE_IRQ
CONFIG_GENERIC_FIND_FIRST_BIT
CONFIG_GENERIC_IRQ_PROBE
CONFIG_GENERIC_PENDING_IRQ
CONFIG_GENERIC_IRQ_SHOW
CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST
CONFIG_IRQ_FORCED_THREADING
CONFIG_USE_GENERIC_SMP_HELPERS
CONFIG_HAVE_BPF_JIT
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE
CONFIG_CLKEVT_I8253
CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG
CONFIG_GENERIC_IOMAP
CONFIG_DCACHE_WORD_ACCESS
CONFIG_GENERIC_SMP_IDLE_THREAD
CONFIG_ARCH_WANT_IPC_PARSE_VERSION
CONFIG_HAVE_ARCH_SECCOMP_FILTER
CONFIG_BUILDTIME_EXTABLE_SORT
CONFIG_GENERIC_CMOS_UPDATE
CONFIG_CLOCKSOURCE_WATCHDOG
CONFIG_GENERIC_CLOCKEVENTS
CONFIG_ARCH_CLOCKSOURCE_DATA
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
CONFIG_GENERIC_TIME_VSYSCALL
CONFIG_KTIME_SCALAR
CONFIG_GENERIC_STRNCPY_FROM_USER
CONFIG_GENERIC_STRNLEN_USER
CONFIG_HAVE_CONTEXT_TRACKING
CONFIG_HAVE_IRQ_TIME_ACCOUNTING
CONFIG_VIRT_TO_BUS
CONFIG_MODULES_USE_ELF_REL
CONFIG_MODULES_USE_ELF_RELA
CONFIG_CLONE_BACKWARDS
CONFIG_ARCH_USE_BUILTIN_BSWAP
CONFIG_OLD_SIGSUSPEND3
CONFIG_OLD_SIGACTION
CONFIG_COMPAT_OLD_SIGACTION
CONFIG_RTC_LIB
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW