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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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35
vmm/src/cpu.rs
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@@ -365,41 +365,18 @@ impl Snapshottable for Vcpu {
}
fn snapshot(&mut self) -> std::result::Result<Snapshot, MigratableError> {
let snapshot = serde_json::to_vec(&self.saved_state)
.map_err(|e| MigratableError::Snapshot(e.into()))?;
let mut vcpu_snapshot = Snapshot::new(&format!("{}", self.id));
vcpu_snapshot.add_data_section(SnapshotDataSection {
id: format!("{}-section", VCPU_SNAPSHOT_ID),
snapshot,
});
vcpu_snapshot.add_data_section(SnapshotDataSection::new_from_state(
VCPU_SNAPSHOT_ID,
&self.saved_state,
)?);
Ok(vcpu_snapshot)
}
fn restore(&mut self, snapshot: Snapshot) -> std::result::Result<(), MigratableError> {
if let Some(vcpu_section) = snapshot
.snapshot_data
.get(&format!("{}-section", VCPU_SNAPSHOT_ID))
{
let vcpu_state = match serde_json::from_slice(&vcpu_section.snapshot) {
Ok(state) => state,
Err(error) => {
return Err(MigratableError::Restore(anyhow!(
"Could not deserialize the vCPU snapshot {}",
error
)))
}
};
self.saved_state = Some(vcpu_state);
Ok(())
} else {
Err(MigratableError::Restore(anyhow!(
"Could not find the vCPU snapshot section"
)))
}
self.saved_state = Some(snapshot.to_state(VCPU_SNAPSHOT_ID)?);
Ok(())
}
}