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vmm: cpu: Store the vCPU snapshots in ascending order

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The snapshots are stored in a BTree which is ordered however as the ids
are strings lexical ordering places "11" ahead of "2". So encode the
vCPU id with zero padding so it is lexically sorted.

This fixes issues with CPU restore on aarch64.

See: #4239

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford 2022-06-27 14:42:56 +01:00
parent 6ac8dc8745
commit 65ec6631fb
1 changed files with 1 additions and 1 deletions
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2
vmm/src/cpu.rs
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@ -387,7 +387,7 @@ impl Snapshottable for Vcpu {
.state()
.map_err(|e| MigratableError::Pause(anyhow!("Could not get vCPU state {:?}", e)))?;
let mut vcpu_snapshot = Snapshot::new(&format!("{}", self.id));
let mut vcpu_snapshot = Snapshot::new(&format!("{:03}", self.id));
vcpu_snapshot.add_data_section(SnapshotDataSection::new_from_state(
VCPU_SNAPSHOT_ID,
&saved_state,