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linux-next/drivers/vfio/Kconfig
Geert Uytterhoeven cf3f98c7f4 drivers/vfio: Allow type-1 IOMMU instantiation with all ARM/ARM64 IOMMUs
Currently the type-1 IOMMU instantiation depends on "ARM_SMMU ||
ARM_SMMU_V3", while it applies to other ARM/ARM64 platforms with an
IOMMU (e.g. Renesas VMSA-compatible IPMMUs).

Instead of extending the list of IOMMU types on ARM platforms, replace
the list by "ARM || ARM64", like other architectures do.  The feature is
still restricted to ARM/ARM64 platforms with an IOMMU by the dependency
on IOMMU_API.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-09-25 13:01:28 -06:00

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config VFIO_IOMMU_TYPE1
tristate
depends on VFIO
default n
config VFIO_IOMMU_SPAPR_TCE
tristate
depends on VFIO && SPAPR_TCE_IOMMU
default VFIO
config VFIO_SPAPR_EEH
tristate
depends on EEH && VFIO_IOMMU_SPAPR_TCE
default VFIO
config VFIO_VIRQFD
tristate
depends on VFIO && EVENTFD
default n
menuconfig VFIO
tristate "VFIO Non-Privileged userspace driver framework"
depends on IOMMU_API
select VFIO_IOMMU_TYPE1 if (X86 || S390 || ARM || ARM64)
select ANON_INODES
help
VFIO provides a framework for secure userspace device drivers.
See Documentation/vfio.txt for more details.
If you don't know what to do here, say N.
menuconfig VFIO_NOIOMMU
bool "VFIO No-IOMMU support"
depends on VFIO
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.
source "drivers/vfio/pci/Kconfig"
source "drivers/vfio/platform/Kconfig"
source "drivers/vfio/mdev/Kconfig"
source "virt/lib/Kconfig"