Method move_bar

devices/src/ivshmem.rs:355–383

(&mut self, old_base: u64, new_base: u64)

    }

    fn move_bar(&mut self, old_base: u64, new_base: u64) -> result::Result<(), std::io::Error> {
        if new_base == self.data_bar_addr() {
            if let Some(old_mapping) = self.userspace_mapping.take() {
                self.ivshmem_ops
                    .lock()
                    .unwrap()
                    .unmap_ram_region(old_mapping)
                    .map_err(std::io::Error::other)?;
            }
            let (region, new_mapping) = self
                .ivshmem_ops
                .lock()
                .unwrap()
                .map_ram_region(
                    new_base,
                    self.region_size as usize,
                    self.backend_file.clone(),
                )
                .map_err(std::io::Error::other)?;
            self.set_region(region, new_mapping);
        }
        for bar in self.bar_regions.iter_mut() {
            if bar.addr() == old_base {
                *bar = bar.set_address(new_base);
            }
        }

        Ok(())
    }

    fn restore_bar_addr(&mut self, params: &BarReprogrammingParams) {
        self.configuration.restore_bar_addr(params);