Struct NodeVfioConfig 

#[non_exhaustive]
pub struct NodeVfioConfig {
    pub dma_entry_limit: Option<i32>,
    /* private fields */
}

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

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

dma_entry_limit: Option<i32>

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.

Implementations

impl NodeVfioConfig

pub fn new() -> Self

Creates a new default instance.

pub fn set_dma_entry_limit<T>(self, v: T) -> Self

where T: Into<i32>,

Sets the value of dma_entry_limit.

Example

let x = NodeVfioConfig::new().set_dma_entry_limit(42);

pub fn set_or_clear_dma_entry_limit<T>(self, v: Option<T>) -> Self

where T: Into<i32>,

Sets or clears the value of dma_entry_limit.

Example

let x = NodeVfioConfig::new().set_or_clear_dma_entry_limit(Some(42));
let x = NodeVfioConfig::new().set_or_clear_dma_entry_limit(None::<i32>);

Trait Implementations

impl Clone for NodeVfioConfig

fn clone(&self) -> NodeVfioConfig

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for NodeVfioConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for NodeVfioConfig

fn default() -> NodeVfioConfig

Returns the “default value” for a type.

impl Message for NodeVfioConfig

fn typename() -> &'static str

The typename of this message.

impl PartialEq for NodeVfioConfig

fn eq(&self, other: &NodeVfioConfig) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for NodeVfioConfig