kernelconfig_penguin
selects
CONFIG_GENERIC_IO

depends
NOT CONFIG_NO_IOMEM

CONFIG_HAS_IOMEM (not configurable)

modulename: iomap_copy.ko

and/or

iomem.ko
configname: CONFIG_HAS_IOMEM

Linux Kernel Configuration
└─> Library routines
└─> HAS_IOMEM