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vmm: Directly (de)serialise CpuManager, DeviceManager and MemoryManager state

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Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford
2021-04-14 16:50:29 +01:00
committed by Sebastien Boeuf
parent 85f7913bb3
commit a7c4483b8b
3 changed files with 36 additions and 94 deletions
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24
vmm/src/device_manager.rs
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@@ -3869,32 +3869,18 @@ impl Snapshottable for DeviceManager {
}
// Then we store the DeviceManager state.
snapshot.add_data_section(SnapshotDataSection {
id: format!("{}-section", DEVICE_MANAGER_SNAPSHOT_ID),
snapshot: serde_json::to_vec(&self.state())
.map_err(|e| MigratableError::Snapshot(e.into()))?,
});
snapshot.add_data_section(SnapshotDataSection::new_from_state(
DEVICE_MANAGER_SNAPSHOT_ID,
&self.state(),
)?);
Ok(snapshot)
}
fn restore(&mut self, snapshot: Snapshot) -> std::result::Result<(), MigratableError> {
// Let's first restore the DeviceManager.
if let Some(device_manager_section) = snapshot
.snapshot_data
.get(&format!("{}-section", DEVICE_MANAGER_SNAPSHOT_ID))
{
let device_manager_state = serde_json::from_slice(&device_manager_section.snapshot)
.map_err(|e| {
MigratableError::Restore(anyhow!("Could not deserialize DeviceManager {}", e))
})?;
self.set_state(&device_manager_state);
} else {
return Err(MigratableError::Restore(anyhow!(
"Could not find DeviceManager snapshot section"
)));
}
self.set_state(&snapshot.to_state(DEVICE_MANAGER_SNAPSHOT_ID)?);
// Now that DeviceManager is updated with the right states, it's time
// to create the devices based on the configuration.