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| author |   Jason Gunthorpe <jgg@nvidia.com> | 2023-01-18 13:50:28 -0400 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2023-02-03 15:45:23 -0400 |
| commit | c9a397cee9f5c93a7f48e18038b14057044db6ba (patch) | |
| tree | 8b7e0c201d5e50562c6fc0c553da53fd37dfd980 /drivers/vfio/Kconfig | |
| parent | Linux 6.2-rc3 (diff) | |
| download | wireguard-linux-c9a397cee9f5c93a7f48e18038b14057044db6ba.tar.xz wireguard-linux-c9a397cee9f5c93a7f48e18038b14057044db6ba.zip | |
vfio: Support VFIO_NOIOMMU with iommufd
Add a small amount of emulation to vfio_compat to accept the SET_IOMMU to
VFIO_NOIOMMU_IOMMU and have vfio just ignore iommufd if it is working on a
no-iommu enabled device.
Move the enable_unsafe_noiommu_mode module out of container.c into
vfio_main.c so that it is always available even if VFIO_CONTAINER=n.
This passes Alex's mini-test:
https://github.com/awilliam/tests/blob/master/vfio-noiommu-pci-device-open.c
Link: https://lore.kernel.org/r/0-v3-480cd64a16f7+1ad0-iommufd_noiommu_jgg@nvidia.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/vfio/Kconfig')
| -rw-r--r-- | drivers/vfio/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/vfio/Kconfig b/drivers/vfio/Kconfig index a8f544629467..89e06c981e43 100644 --- a/drivers/vfio/Kconfig +++ b/drivers/vfio/Kconfig @@ -32,6 +32,7 @@ config VFIO_IOMMU_SPAPR_TCE tristate depends on SPAPR_TCE_IOMMU default VFIO +endif config VFIO_NOIOMMU bool "VFIO No-IOMMU support" @@ -46,7 +47,6 @@ config VFIO_NOIOMMU this mode since there is no IOMMU to provide DMA translation. If you don't know what to do here, say N. -endif config VFIO_VIRQFD bool |