LXR linux/drivers/vfio/Kconfig

   1# SPDX-License-Identifier: GPL-2.0-only
   2menuconfig VFIO
   3        tristate "VFIO Non-Privileged userspace driver framework"
   4        select IOMMU_API
   5        select VFIO_IOMMU_TYPE1 if MMU && (X86 || S390 || ARM || ARM64)
   6        help
   7          VFIO provides a framework for secure userspace device drivers.
   8          See Documentation/driver-api/vfio.rst for more details.
   9
  10          If you don't know what to do here, say N.
  11
  12if VFIO
  13config VFIO_IOMMU_TYPE1
  14        tristate
  15        default n
  16
  17config VFIO_IOMMU_SPAPR_TCE
  18        tristate
  19        depends on SPAPR_TCE_IOMMU
  20        default VFIO
  21
  22config VFIO_SPAPR_EEH
  23        tristate
  24        depends on EEH && VFIO_IOMMU_SPAPR_TCE
  25        default VFIO
  26
  27config VFIO_VIRQFD
  28        tristate
  29        select EVENTFD
  30        default n
  31
  32config VFIO_NOIOMMU
  33        bool "VFIO No-IOMMU support"
  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 "drivers/vfio/fsl-mc/Kconfig"
  50endif
  51
  52source "virt/lib/Kconfig"
  53