b2b12db535
VFIO_IOMMU_TYPE1 does not compile with !MMU: ../drivers/vfio/vfio_iommu_type1.c: In function 'follow_fault_pfn': ../drivers/vfio/vfio_iommu_type1.c:536:22: error: implicit declaration of function 'pte_write'; did you mean 'vfs_write'? [-Werror=implicit-function-declaration] So require it. Suggested-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Message-Id: <0-v1-02cb5500df6e+78-vfio_no_mmu_jgg@nvidia.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
52 lines
1.5 KiB
Plaintext
52 lines
1.5 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
|
|
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"
|
|
select IOMMU_API
|
|
select VFIO_IOMMU_TYPE1 if MMU && (X86 || S390 || ARM || ARM64)
|
|
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.
|
|
|
|
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 "drivers/vfio/fsl-mc/Kconfig"
|
|
source "virt/lib/Kconfig"
|