1*4882a593Smuzhiyun# SPDX-License-Identifier: GPL-2.0-only 2*4882a593Smuzhiyunconfig VFIO_IOMMU_TYPE1 3*4882a593Smuzhiyun tristate 4*4882a593Smuzhiyun depends on VFIO 5*4882a593Smuzhiyun default n 6*4882a593Smuzhiyun 7*4882a593Smuzhiyunconfig VFIO_IOMMU_SPAPR_TCE 8*4882a593Smuzhiyun tristate 9*4882a593Smuzhiyun depends on VFIO && SPAPR_TCE_IOMMU 10*4882a593Smuzhiyun default VFIO 11*4882a593Smuzhiyun 12*4882a593Smuzhiyunconfig VFIO_SPAPR_EEH 13*4882a593Smuzhiyun tristate 14*4882a593Smuzhiyun depends on EEH && VFIO_IOMMU_SPAPR_TCE 15*4882a593Smuzhiyun default VFIO 16*4882a593Smuzhiyun 17*4882a593Smuzhiyunconfig VFIO_VIRQFD 18*4882a593Smuzhiyun tristate 19*4882a593Smuzhiyun depends on VFIO && EVENTFD 20*4882a593Smuzhiyun default n 21*4882a593Smuzhiyun 22*4882a593Smuzhiyunmenuconfig VFIO 23*4882a593Smuzhiyun tristate "VFIO Non-Privileged userspace driver framework" 24*4882a593Smuzhiyun select IOMMU_API 25*4882a593Smuzhiyun select VFIO_IOMMU_TYPE1 if MMU && (X86 || S390 || ARM || ARM64) 26*4882a593Smuzhiyun help 27*4882a593Smuzhiyun VFIO provides a framework for secure userspace device drivers. 28*4882a593Smuzhiyun See Documentation/driver-api/vfio.rst for more details. 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun If you don't know what to do here, say N. 31*4882a593Smuzhiyun 32*4882a593Smuzhiyunconfig VFIO_NOIOMMU 33*4882a593Smuzhiyun bool "VFIO No-IOMMU support" 34*4882a593Smuzhiyun depends on VFIO 35*4882a593Smuzhiyun help 36*4882a593Smuzhiyun VFIO is built on the ability to isolate devices using the IOMMU. 37*4882a593Smuzhiyun Only with an IOMMU can userspace access to DMA capable devices be 38*4882a593Smuzhiyun considered secure. VFIO No-IOMMU mode enables IOMMU groups for 39*4882a593Smuzhiyun devices without IOMMU backing for the purpose of re-using the VFIO 40*4882a593Smuzhiyun infrastructure in a non-secure mode. Use of this mode will result 41*4882a593Smuzhiyun in an unsupportable kernel and will therefore taint the kernel. 42*4882a593Smuzhiyun Device assignment to virtual machines is also not possible with 43*4882a593Smuzhiyun this mode since there is no IOMMU to provide DMA translation. 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun If you don't know what to do here, say N. 46*4882a593Smuzhiyun 47*4882a593Smuzhiyunsource "drivers/vfio/pci/Kconfig" 48*4882a593Smuzhiyunsource "drivers/vfio/platform/Kconfig" 49*4882a593Smuzhiyunsource "drivers/vfio/mdev/Kconfig" 50*4882a593Smuzhiyunsource "drivers/vfio/fsl-mc/Kconfig" 51*4882a593Smuzhiyunsource "virt/lib/Kconfig" 52