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Class NodeVfioConfig (2.67.0)

NodeVfioConfig(mapping=None, *, ignore_unknown_fields=False, **kwargs)

Configuration settings for VFIO (Virtual Function I/O) on a node. VFIO allows safe, unprivileged, userspace drivers to access I/O devices.

.. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields

Attribute
Name	Description
`dma_entry_limit`	`int` Optional. Specifies the maximum number of DMA entries (pages) that can be mapped by the VFIO IOMMU type 1 driver for a container. This limit affects the total amount of host memory that can be pinned for direct device access, which is often critical for high-performance devices like TPUs and GPUs. This setting corresponds to the kernel parameter at: `/sys/module/vfio_iommu_type1/parameters/dma_entry_limit`. The default value in the kernel is `65535`. Higher values may be needed for workloads mapping large memory regions. Supported values are integers between `65535` and `4194304`. This field is a member of `oneof`_ `_dma_entry_limit`.

Attribute

Name Description

dma_entry_limit int
Optional. Specifies the maximum number of DMA entries (pages) that can be mapped by the VFIO IOMMU type 1 driver for a container. This limit affects the total amount of host memory that can be pinned for direct device access, which is often critical for high-performance devices like TPUs and GPUs. This setting corresponds to the kernel parameter at: /sys/module/vfio_iommu_type1/parameters/dma_entry_limit. The default value in the kernel is 65535. Higher values may be needed for workloads mapping large memory regions. Supported values are integers between 65535 and 4194304. This field is a member of oneof_ _dma_entry_limit.