1# SPDX-License-Identifier: GPL-2.0-only 2config VFIO_IOMMU_TYPE1 3 tristate 4 depends on VFIO 5 default n 6 7config VFIO_IOMMU_SPAPR_TCE 8 tristate 9 depends on VFIO && SPAPR_TCE_IOMMU 10 default VFIO 11 12config VFIO_SPAPR_EEH 13 tristate 14 depends on EEH && VFIO_IOMMU_SPAPR_TCE 15 default VFIO 16 17config VFIO_VIRQFD 18 tristate 19 depends on VFIO && EVENTFD 20 default n 21 22menuconfig VFIO 23 tristate "VFIO Non-Privileged userspace driver framework" 24 depends on IOMMU_API 25 select VFIO_IOMMU_TYPE1 if (X86 || S390 || ARM || ARM64) 26 help 27 VFIO provides a framework for secure userspace device drivers. 28 See Documentation/driver-api/vfio.rst for more details. 29 30 If you don't know what to do here, say N. 31 32menuconfig VFIO_NOIOMMU 33 bool "VFIO No-IOMMU support" 34 depends on VFIO 35 help 36 VFIO is built on the ability to isolate devices using the IOMMU. 37 Only with an IOMMU can userspace access to DMA capable devices be 38 considered secure. VFIO No-IOMMU mode enables IOMMU groups for 39 devices without IOMMU backing for the purpose of re-using the VFIO 40 infrastructure in a non-secure mode. Use of this mode will result 41 in an unsupportable kernel and will therefore taint the kernel. 42 Device assignment to virtual machines is also not possible with 43 this mode since there is no IOMMU to provide DMA translation. 44 45 If you don't know what to do here, say N. 46 47source "drivers/vfio/pci/Kconfig" 48source "drivers/vfio/platform/Kconfig" 49source "drivers/vfio/mdev/Kconfig" 50source "drivers/vfio/fsl-mc/Kconfig" 51source "virt/lib/Kconfig" 52