1config VFIO_IOMMU_TYPE1 2 tristate 3 depends on VFIO 4 default n 5 6config VFIO_IOMMU_SPAPR_TCE 7 tristate 8 depends on VFIO && SPAPR_TCE_IOMMU 9 default VFIO 10 11config VFIO_SPAPR_EEH 12 tristate 13 depends on EEH && VFIO_IOMMU_SPAPR_TCE 14 default VFIO 15 16config VFIO_VIRQFD 17 tristate 18 depends on VFIO && EVENTFD 19 default n 20 21menuconfig VFIO 22 tristate "VFIO Non-Privileged userspace driver framework" 23 depends on IOMMU_API 24 select VFIO_IOMMU_TYPE1 if (X86 || S390 || ARM || ARM64) 25 help 26 VFIO provides a framework for secure userspace device drivers. 27 See Documentation/vfio.txt for more details. 28 29 If you don't know what to do here, say N. 30 31menuconfig VFIO_NOIOMMU 32 bool "VFIO No-IOMMU support" 33 depends on VFIO 34 help 35 VFIO is built on the ability to isolate devices using the IOMMU. 36 Only with an IOMMU can userspace access to DMA capable devices be 37 considered secure. VFIO No-IOMMU mode enables IOMMU groups for 38 devices without IOMMU backing for the purpose of re-using the VFIO 39 infrastructure in a non-secure mode. Use of this mode will result 40 in an unsupportable kernel and will therefore taint the kernel. 41 Device assignment to virtual machines is also not possible with 42 this mode since there is no IOMMU to provide DMA translation. 43 44 If you don't know what to do here, say N. 45 46source "drivers/vfio/pci/Kconfig" 47source "drivers/vfio/platform/Kconfig" 48source "drivers/vfio/mdev/Kconfig" 49source "virt/lib/Kconfig" 50