runtime-rs: Add QEMU VFIO command-line parameter structs

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Add QEMU command-line parameter types for VFIO device cold-plug:

- ObjectIommufd: /dev/iommu object for iommufd-backed passthrough
- PCIeVfioDevice: vfio-pci device on a PCIe root port or switch port,
  supporting both legacy VFIO group and iommufd cdev backends
- FWCfgDevice: firmware config device for fw_cfg blob injection
- VfioDeviceBase/VfioDeviceConfig/VfioDeviceGroup: high-level wrappers
  that compose the above into complete QEMU argument sets, resolving
  IOMMU groups, device nodes, and per-device fw_cfg entries

Refactor existing cmdline structs (BalloonDevice, VirtioNetDevice,
VirtioBlkDevice, etc.) to use a shared devices_to_params() helper
and align the ToQemuParams implementations.

Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
Signed-off-by: Fabiano Fidêncio <ffidencio@nvidia.com>

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This commit is contained in:

Alex Lyn

2026-04-12 16:26:48 +02:00

committed by Fabiano Fidêncio

parent 2cd94ec92e

commit 2a104dbada

1 changed files with 766 additions and 145 deletions

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src/runtime-rs/crates/hypervisor/src/qemu/cmdline_generator.rs

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