config VFIO_IOMMU_TYPE1 tristate depends on VFIO default n config VFIO_IOMMU_SPAPR_TCE tristate depends on VFIO && SPAPR_TCE_IOMMU default n menuconfig VFIO tristate "VFIO Non-Privileged userspace driver framework" depends on IOMMU_API select VFIO_IOMMU_TYPE1 if X86 select VFIO_IOMMU_SPAPR_TCE if (PPC_POWERNV || PPC_PSERIES) help VFIO provides a framework for secure userspace device drivers. See Documentation/vfio.txt for more details. If you don't know what to do here, say N. source "drivers/vfio/pci/Kconfig"