https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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- v2.6.20-rc4
- v2.6.20-rc3
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Tip revision: 706a741595047797872e669b3101429ab8d378ef authored by Linus Torvalds on 20 August 2023, 13:02:52 UTC
Linux 6.5-rc7
Linux 6.5-rc7
Tip revision: 706a741
Kconfig
# SPDX-License-Identifier: GPL-2.0-only
menuconfig VFIO
tristate "VFIO Non-Privileged userspace driver framework"
select IOMMU_API
depends on IOMMUFD || !IOMMUFD
select INTERVAL_TREE
select VFIO_CONTAINER if IOMMUFD=n
help
VFIO provides a framework for secure userspace device drivers.
See Documentation/driver-api/vfio.rst for more details.
If you don't know what to do here, say N.
if VFIO
config VFIO_CONTAINER
bool "Support for the VFIO container /dev/vfio/vfio"
select VFIO_IOMMU_TYPE1 if MMU && (X86 || S390 || ARM || ARM64)
default y
help
The VFIO container is the classic interface to VFIO for establishing
IOMMU mappings. If N is selected here then IOMMUFD must be used to
manage the mappings.
Unless testing IOMMUFD say Y here.
if VFIO_CONTAINER
config VFIO_IOMMU_TYPE1
tristate
default n
config VFIO_IOMMU_SPAPR_TCE
tristate
depends on SPAPR_TCE_IOMMU
default VFIO
endif
config VFIO_NOIOMMU
bool "VFIO No-IOMMU support"
help
VFIO is built on the ability to isolate devices using the IOMMU.
Only with an IOMMU can userspace access to DMA capable devices be
considered secure. VFIO No-IOMMU mode enables IOMMU groups for
devices without IOMMU backing for the purpose of re-using the VFIO
infrastructure in a non-secure mode. Use of this mode will result
in an unsupportable kernel and will therefore taint the kernel.
Device assignment to virtual machines is also not possible with
this mode since there is no IOMMU to provide DMA translation.
If you don't know what to do here, say N.
config VFIO_VIRQFD
bool
select EVENTFD
default n
source "drivers/vfio/pci/Kconfig"
source "drivers/vfio/platform/Kconfig"
source "drivers/vfio/mdev/Kconfig"
source "drivers/vfio/fsl-mc/Kconfig"
source "drivers/vfio/cdx/Kconfig"
endif
source "virt/lib/Kconfig"