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785d21ba2f
Pull VFIO updates from Alex Williamson: - Replace deprecated git://github.com link in MAINTAINERS (Palmer Dabbelt) - Simplify vfio/mlx5 with module_pci_driver() helper (Shang XiaoJing) - Drop unnecessary buffer from ACPI call (Rafael Mendonca) - Correct latent missing include issue in iova-bitmap and fix support for unaligned bitmaps. Follow-up with better fix through refactor (Joao Martins) - Rework ccw mdev driver to split private data from parent structure, better aligning with the mdev lifecycle and allowing us to remove a temporary workaround (Eric Farman) - Add an interface to get an estimated migration data size for a device, allowing userspace to make informed decisions, ex. more accurately predicting VM downtime (Yishai Hadas) - Fix minor typo in vfio/mlx5 array declaration (Yishai Hadas) - Simplify module and Kconfig through consolidating SPAPR/EEH code and config options and folding virqfd module into main vfio module (Jason Gunthorpe) - Fix error path from device_register() across all vfio mdev and sample drivers (Alex Williamson) - Define migration pre-copy interface and implement for vfio/mlx5 devices, allowing portions of the device state to be saved while the device continues operation, towards reducing the stop-copy state size (Jason Gunthorpe, Yishai Hadas, Shay Drory) - Implement pre-copy for hisi_acc devices (Shameer Kolothum) - Fixes to mdpy mdev driver remove path and error path on probe (Shang XiaoJing) - vfio/mlx5 fixes for incorrect return after copy_to_user() fault and incorrect buffer freeing (Dan Carpenter) * tag 'vfio-v6.2-rc1' of https://github.com/awilliam/linux-vfio: (42 commits) vfio/mlx5: error pointer dereference in error handling vfio/mlx5: fix error code in mlx5vf_precopy_ioctl() samples: vfio-mdev: Fix missing pci_disable_device() in mdpy_fb_probe() hisi_acc_vfio_pci: Enable PRE_COPY flag hisi_acc_vfio_pci: Move the dev compatibility tests for early check hisi_acc_vfio_pci: Introduce support for PRE_COPY state transitions hisi_acc_vfio_pci: Add support for precopy IOCTL vfio/mlx5: Enable MIGRATION_PRE_COPY flag vfio/mlx5: Fallback to STOP_COPY upon specific PRE_COPY error vfio/mlx5: Introduce multiple loads vfio/mlx5: Consider temporary end of stream as part of PRE_COPY vfio/mlx5: Introduce vfio precopy ioctl implementation vfio/mlx5: Introduce SW headers for migration states vfio/mlx5: Introduce device transitions of PRE_COPY vfio/mlx5: Refactor to use queue based data chunks vfio/mlx5: Refactor migration file state vfio/mlx5: Refactor MKEY usage vfio/mlx5: Refactor PD usage vfio/mlx5: Enforce a single SAVE command at a time vfio: Extend the device migration protocol with PRE_COPY ...
63 lines
1.8 KiB
Plaintext
63 lines
1.8 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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menuconfig VFIO
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tristate "VFIO Non-Privileged userspace driver framework"
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select IOMMU_API
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depends on IOMMUFD || !IOMMUFD
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select INTERVAL_TREE
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select VFIO_CONTAINER if IOMMUFD=n
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help
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VFIO provides a framework for secure userspace device drivers.
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See Documentation/driver-api/vfio.rst for more details.
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If you don't know what to do here, say N.
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if VFIO
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config VFIO_CONTAINER
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bool "Support for the VFIO container /dev/vfio/vfio"
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select VFIO_IOMMU_TYPE1 if MMU && (X86 || S390 || ARM || ARM64)
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default y
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help
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The VFIO container is the classic interface to VFIO for establishing
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IOMMU mappings. If N is selected here then IOMMUFD must be used to
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manage the mappings.
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Unless testing IOMMUFD say Y here.
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if VFIO_CONTAINER
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config VFIO_IOMMU_TYPE1
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tristate
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default n
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config VFIO_IOMMU_SPAPR_TCE
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tristate
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depends on SPAPR_TCE_IOMMU
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default VFIO
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config VFIO_NOIOMMU
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bool "VFIO No-IOMMU support"
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help
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VFIO is built on the ability to isolate devices using the IOMMU.
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Only with an IOMMU can userspace access to DMA capable devices be
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considered secure. VFIO No-IOMMU mode enables IOMMU groups for
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devices without IOMMU backing for the purpose of re-using the VFIO
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infrastructure in a non-secure mode. Use of this mode will result
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in an unsupportable kernel and will therefore taint the kernel.
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Device assignment to virtual machines is also not possible with
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this mode since there is no IOMMU to provide DMA translation.
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If you don't know what to do here, say N.
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endif
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config VFIO_VIRQFD
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bool
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select EVENTFD
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default n
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source "drivers/vfio/pci/Kconfig"
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source "drivers/vfio/platform/Kconfig"
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source "drivers/vfio/mdev/Kconfig"
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source "drivers/vfio/fsl-mc/Kconfig"
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endif
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source "virt/lib/Kconfig"
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