kernel/linux.git/tools/testing/selftests/vfio/lib/include, branch v6.19.11

vfio: selftests: Drop includes

2025-12-23T21:17:13+00:00

Drop the includes now that (tools/include/linux/types.h) has a definition for __aligned_le64, which is needed by . Including is harmless but causes benign typedef redefinitions. This is not a problem for VFIO selftests but becomes an issue when the VFIO selftests library is built into KVM selftests, since they are built with -std=gnu99 which does not allow typedef redifitions. No functional change intended. Signed-off-by: David Matlack Link: https://lore.kernel.org/r/20251219233818.1965306-3-dmatlack@google.com Signed-off-by: Alex Williamson

vfio: selftests: Eliminate INVALID_IOVA

2025-11-28T17:58:07+00:00

Eliminate INVALID_IOVA as there are platforms where UINT64_MAX is a valid iova. Reviewed-by: Alex Mastro Tested-by: Alex Mastro Reviewed-by: Raghavendra Rao Ananta Signed-off-by: David Matlack Link: https://lore.kernel.org/r/20251126231733.3302983-18-dmatlack@google.com Signed-off-by: Alex Williamson

vfio: selftests: Split libvfio.h into separate header files

2025-11-28T17:58:07+00:00

Split out the contents of libvfio.h into separate header files, but keep libvfio.h as the top-level include that all tests can use. Put all new header files into a libvfio/ subdirectory to avoid future name conflicts in include paths when libvfio is used by other selftests like KVM. No functional change intended. Reviewed-by: Alex Mastro Tested-by: Alex Mastro Reviewed-by: Raghavendra Rao Ananta Signed-off-by: David Matlack Link: https://lore.kernel.org/r/20251126231733.3302983-17-dmatlack@google.com Signed-off-by: Alex Williamson

vfio: selftests: Rename vfio_util.h to libvfio.h

2025-11-28T17:58:07+00:00

Rename vfio_util.h to libvfio.h to match the name of libvfio.mk. No functional change intended. Reviewed-by: Alex Mastro Tested-by: Alex Mastro Reviewed-by: Raghavendra Rao Ananta Signed-off-by: David Matlack Link: https://lore.kernel.org/r/20251126231733.3302983-15-dmatlack@google.com Signed-off-by: Alex Williamson

vfio: selftests: Stop passing device for IOMMU operations

2025-11-28T17:58:06+00:00

Drop the struct vfio_pci_device wrappers for IOMMU map/unmap functions and require tests to directly call iommu_map(), iommu_unmap(), etc. This results in more concise code, and also makes it clear the map operations are happening on a struct iommu, not necessarily on a specific device, especially when multi-device tests are introduced. Do the same for iova_allocator_init() as that function only needs the struct iommu, not struct vfio_pci_device. Reviewed-by: Alex Mastro Tested-by: Alex Mastro Reviewed-by: Raghavendra Rao Ananta Signed-off-by: David Matlack Link: https://lore.kernel.org/r/20251126231733.3302983-14-dmatlack@google.com Signed-off-by: Alex Williamson

vfio: selftests: Move IOMMU library code into iommu.c

2025-11-28T17:58:06+00:00

Move all the IOMMU related library code into their own file iommu.c. This provides a better separation between the vfio_pci_device helper code and the iommu code. No function change intended. Reviewed-by: Alex Mastro Tested-by: Alex Mastro Reviewed-by: Raghavendra Rao Ananta Signed-off-by: David Matlack Link: https://lore.kernel.org/r/20251126231733.3302983-12-dmatlack@google.com Signed-off-by: Alex Williamson

vfio: selftests: Rename struct vfio_dma_region to dma_region

2025-11-28T17:58:06+00:00

Rename struct vfio_dma_region to dma_region. This is in preparation for separating the VFIO PCI device library code from the IOMMU library code. This name change also better reflects the fact that DMA mappings can be managed by either VFIO or IOMMUFD. i.e. the "vfio_" prefix is misleading. Reviewed-by: Alex Mastro Tested-by: Alex Mastro Reviewed-by: Raghavendra Rao Ananta Signed-off-by: David Matlack Link: https://lore.kernel.org/r/20251126231733.3302983-11-dmatlack@google.com Signed-off-by: Alex Williamson

vfio: selftests: Prefix logs with device BDF where relevant

2025-11-28T17:58:06+00:00

Prefix log messages with the device's BDF where relevant. This will help understanding VFIO selftests logs when tests are run with multiple devices. Reviewed-by: Alex Mastro Tested-by: Alex Mastro Reviewed-by: Raghavendra Rao Ananta Signed-off-by: David Matlack Link: https://lore.kernel.org/r/20251126231733.3302983-9-dmatlack@google.com Signed-off-by: Alex Williamson

vfio: selftests: Support multiple devices in the same container/iommufd

2025-11-28T17:58:06+00:00

Support tests that want to add multiple devices to the same container/iommufd by decoupling struct vfio_pci_device from struct iommu. Multi-devices tests can now put multiple devices in the same container/iommufd like so: iommu = iommu_init(iommu_mode); device1 = vfio_pci_device_init(bdf1, iommu); device2 = vfio_pci_device_init(bdf2, iommu); device3 = vfio_pci_device_init(bdf3, iommu); ... vfio_pci_device_cleanup(device3); vfio_pci_device_cleanup(device2); vfio_pci_device_cleanup(device1); iommu_cleanup(iommu); To account for the new separation of vfio_pci_device and iommu, update existing tests to initialize and cleanup a struct iommu. Reviewed-by: Alex Mastro Tested-by: Alex Mastro Reviewed-by: Raghavendra Rao Ananta Signed-off-by: David Matlack Link: https://lore.kernel.org/r/20251126231733.3302983-7-dmatlack@google.com Signed-off-by: Alex Williamson

vfio: selftests: Introduce struct iommu

2025-11-28T17:58:06+00:00

Introduce struct iommu, which logically represents either a VFIO container or an iommufd IOAS, depending on which IOMMU mode is used by the test. This will be used in a subsequent commit to allow devices to be added to the same container/iommufd. Reviewed-by: Alex Mastro Tested-by: Alex Mastro Reviewed-by: Raghavendra Rao Ananta Signed-off-by: David Matlack Link: https://lore.kernel.org/r/20251126231733.3302983-6-dmatlack@google.com Signed-off-by: Alex Williamson