projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| ec8f24b7 | 1 | # SPDX-License-Identifier: GPL-2.0-only |
| 85c94dcf JG |
2 | menuconfig VFIO |
| 3 | tristate "VFIO Non-Privileged userspace driver framework" | |
| 4 | select IOMMU_API | |
| 2a3dab19 | 5 | depends on IOMMUFD || !IOMMUFD |
| 80c4b92a | 6 | select INTERVAL_TREE |
| e5a9ec7e | 7 | select VFIO_CONTAINER if IOMMUFD=n |
| 85c94dcf JG |
8 | help |
| 9 | VFIO provides a framework for secure userspace device drivers. | |
| 10 | See Documentation/driver-api/vfio.rst for more details. | |
| 11 | ||
| 12 | If you don't know what to do here, say N. | |
| 13 | ||
| 14 | if VFIO | |
| e5a9ec7e JG |
15 | config VFIO_CONTAINER |
| 16 | bool "Support for the VFIO container /dev/vfio/vfio" | |
| 17 | select VFIO_IOMMU_TYPE1 if MMU && (X86 || S390 || ARM || ARM64) | |
| 18 | default y | |
| 19 | help | |
| 20 | The VFIO container is the classic interface to VFIO for establishing | |
| 21 | IOMMU mappings. If N is selected here then IOMMUFD must be used to | |
| 22 | manage the mappings. | |
| 23 | ||
| 24 | Unless testing IOMMUFD say Y here. | |
| 25 | ||
| 26 | if VFIO_CONTAINER | |
| 73fa0d10 AW |
27 | config VFIO_IOMMU_TYPE1 |
| 28 | tristate | |
| 73fa0d10 AW |
29 | default n |
| 30 | ||
| 5ffd229c AK |
31 | config VFIO_IOMMU_SPAPR_TCE |
| 32 | tristate | |
| 85c94dcf | 33 | depends on SPAPR_TCE_IOMMU |
| d88423f7 | 34 | default VFIO |
| c9a397ce | 35 | endif |
| 5ffd229c | 36 | |
| 26c22cfd | 37 | config VFIO_NOIOMMU |
| 03a76b60 | 38 | bool "VFIO No-IOMMU support" |
| 03a76b60 AW |
39 | help |
| 40 | VFIO is built on the ability to isolate devices using the IOMMU. | |
| 41 | Only with an IOMMU can userspace access to DMA capable devices be | |
| 42 | considered secure. VFIO No-IOMMU mode enables IOMMU groups for | |
| 43 | devices without IOMMU backing for the purpose of re-using the VFIO | |
| 44 | infrastructure in a non-secure mode. Use of this mode will result | |
| 45 | in an unsupportable kernel and will therefore taint the kernel. | |
| 46 | Device assignment to virtual machines is also not possible with | |
| 47 | this mode since there is no IOMMU to provide DMA translation. | |
| 48 | ||
| 49 | If you don't know what to do here, say N. | |
| e5a9ec7e | 50 | |
| e5a9ec7e | 51 | config VFIO_VIRQFD |
| 785d21ba | 52 | bool |
| e5a9ec7e JG |
53 | select EVENTFD |
| 54 | default n | |
| 03a76b60 | 55 | |
| 89e1f7d4 | 56 | source "drivers/vfio/pci/Kconfig" |
| 53161532 | 57 | source "drivers/vfio/platform/Kconfig" |
| 7b96953b | 58 | source "drivers/vfio/mdev/Kconfig" |
| fb1ff4c1 | 59 | source "drivers/vfio/fsl-mc/Kconfig" |
| 85c94dcf JG |
60 | endif |
| 61 | ||
| 6d7425f1 | 62 | source "virt/lib/Kconfig" |