mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-16 00:34:20 +08:00
85c94dcffc
This results in less kconfig wordage and a simpler understanding of the required "depends on" to create the menu structure. The next patch increases the nesting level a lot so this is a nice preparatory simplification. Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Yishai Hadas <yishaih@nvidia.com> Link: https://lore.kernel.org/r/20210826103912.128972-13-yishaih@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
53 lines
1.4 KiB
Plaintext
53 lines
1.4 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
|
|
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.
|
|
|
|
if VFIO
|
|
config VFIO_IOMMU_TYPE1
|
|
tristate
|
|
default n
|
|
|
|
config VFIO_IOMMU_SPAPR_TCE
|
|
tristate
|
|
depends on SPAPR_TCE_IOMMU
|
|
default VFIO
|
|
|
|
config VFIO_SPAPR_EEH
|
|
tristate
|
|
depends on EEH && VFIO_IOMMU_SPAPR_TCE
|
|
default VFIO
|
|
|
|
config VFIO_VIRQFD
|
|
tristate
|
|
select EVENTFD
|
|
default n
|
|
|
|
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.
|
|
|
|
source "drivers/vfio/pci/Kconfig"
|
|
source "drivers/vfio/platform/Kconfig"
|
|
source "drivers/vfio/mdev/Kconfig"
|
|
source "drivers/vfio/fsl-mc/Kconfig"
|
|
endif
|
|
|
|
source "virt/lib/Kconfig"
|