Struct devices::virtio::ipc_memory_mapper::ExportedRegion

pub struct ExportedRegion {
    inner: Arc<Mutex<ExportedRegionInner>>,
}

A region exported from the virtio-iommu.

Fields

inner: Arc<Mutex<ExportedRegionInner>>

Implementations

impl ExportedRegion

pub fn new( mem: &GuestMemory, iommu: Arc<Mutex<IpcMemoryMapper>>, iova: u64, size: u64 ) -> Result<Self>

Creates a new, fully initialized exported region.

fn do_copy<C>( &self, iova: u64, remaining: usize, prot: Protection, copy_fn: C ) -> Result<()>

where C: FnMut(usize, GuestAddress, usize) -> Result<usize>,

pub fn read_obj_from_addr<T: FromBytes>( &self, mem: &GuestMemory, iova: u64 ) -> Result<T>

Reads an object from the given iova. Fails if the specified iova range does not lie within this region, or if part of the region isn’t readable.

pub fn write_obj_at_addr<T: AsBytes>( &self, mem: &GuestMemory, val: T, iova: u64 ) -> Result<()>

Writes an object at a given iova. Fails if the specified iova range does not lie within this region, or if part of the region isn’t writable.

pub fn is_valid(&self, mem: &GuestMemory, iova: u64, size: u64) -> bool

Validates that [iova, iova+size) lies within this region, and that the region is valid according to mem.

pub fn get_mem_regions(&self) -> SmallVec<[MemRegion; 1]>

Gets the list of guest physical regions for the exported region.

Trait Implementations

impl Clone for ExportedRegion

fn clone(&self) -> ExportedRegion

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ExportedRegion

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

Formats the value using the given formatter.