Trait Device 

pub trait Device: Send + Sync {
    // Required methods
    fn name(&self) -> &str;
    fn resources(&self) -> &[Resource];
    fn access(
        &self,
        access: &BusAccess,
        context: &mut dyn DeviceAccess,
    ) -> Result<BusResponse, DeviceError>;
}

The unified device trait.

Every emulated device (interrupt controller, UART, virtio-blk, …) implements this trait. The device manager calls resources at registration time for conflict detection and access on the hot path whenever a vCPU exit is dispatched to this device.

Concrete collaboration between devices and architecture code should be exposed through typed services registered with the VM device runtime, not through production downcasts from Arc<dyn Device>.

Required Methods

fn name(&self) -> &str

Returns a human-readable name for this device (used in logging and diagnostics).

fn resources(&self) -> &[Resource]

Returns the resources (MMIO windows, port ranges, system registers) this device requires.

The returned slice is a stable snapshot computed at device construction time. Callers may read it on both the registration path and the hot path without allocation.

fn access( &self, access: &BusAccess, context: &mut dyn DeviceAccess, ) -> Result<BusResponse, DeviceError>

Handles a single bus access with runtime-scoped device context.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors