Struct DmaMapRequest 

pub struct DmaMapRequest<'a> {
    pub range: MemoryRange,
    pub host_va: *const u8,
    pub mappable: Option<&'a Mappable>,
    pub file_offset: u64,
    pub writable: bool,
    pub mapping_type: MappingType,
}

Parameters for a DMA mapping request.

Fields

range: MemoryRange

The guest physical address range to map.

host_va: *const u8

Host virtual address of the mapping.

mappable: Option<&'a Mappable>

The backing object (fd or handle) for the mapping, when one exists. None for anonymous/private RAM, which has no backing fd and is mapped purely by host VA.

file_offset: u64

Offset within mappable where the mapping starts. Ignored (and always zero) when mappable is None, since private/anonymous RAM has no backing object to offset into.

writable: bool

Whether the mapping should allow writes. When false, the IOMMU entry should be read-only.

mapping_type: MappingType

The type of memory being mapped.