Method unplug_all

virtio-devices/src/mem.rs:545–580

(&mut self)

    }

    fn unplug_all(&mut self) -> u16 {
        let mut config = self.config.lock().unwrap();
        if let Err(e) = self.discard_memory_range(0, config.region_size) {
            error!("failed discarding memory range: {e:?}");
            return VIRTIO_MEM_RESP_ERROR;
        }

        // Remaining plugged blocks are unmapped.
        if config.plugged_size > 0 {
            let handlers = self.dma_mapping_handlers.lock().unwrap();
            for (idx, plugged) in self.blocks_state.lock().unwrap().inner().iter().enumerate() {
                if *plugged {
                    let gpa = config.addr + (idx as u64 * config.block_size);
                    for (_, handler) in handlers.iter() {
                        if let Err(e) = handler.unmap(gpa, config.block_size) {
                            error!(
                                "failed DMA unmapping addr 0x{:x} size 0x{:x}: {}",
                                gpa, config.block_size, e
                            );
                            return VIRTIO_MEM_RESP_ERROR;
                        }
                    }
                }
            }
        }

        self.blocks_state.lock().unwrap().set_range(
            0,
            (config.region_size / config.block_size) as usize,
            false,
        );

        config.plugged_size = 0;

        VIRTIO_MEM_RESP_ACK
    }

    fn state_request(&self, addr: u64, nb_blocks: u16) -> (u16, u16) {
        let config = self.config.lock().unwrap();