Struct UniqueEntry 

pub struct UniqueEntry {
    pub paddr: Paddr,
}

Per-UniqueFrame entry in the store. Represents the sole exclusive handle to the slot at paddr — i.e., the slot is held at the REF_COUNT_UNIQUE sentinel with no shared users (no FrameEntry, no SegmentEntry coverage, no live PTE). At most one UniqueEntry exists per slot (enforced by VmStore::structural_inv’s injectivity clause), mirroring the exec exclusivity of UniqueFrame<M>.

Fields

paddr: Paddr