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vmm: Restore clock from Vm creation (x86_64 only)

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This allows the clock restoration to be moved out of the dedicated
restore function, which will eventually be removed.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2022-12-01 10:19:49 +01:00
parent a6959a7469
commit bccfa81368
1 changed files with 11 additions and 17 deletions
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28
vmm/src/vm.rs
View File

@ -28,6 +28,8 @@ use crate::gdb::{Debuggable, DebuggableError, GdbRequestPayload, GdbResponsePayl
use crate::memory_manager::{
Error as MemoryManagerError, MemoryManager, MemoryManagerSnapshotData,
};
#[cfg(all(feature = "kvm", target_arch = "x86_64"))]
use crate::migration::get_vm_snapshot;
#[cfg(feature = "guest_debug")]
use crate::migration::url_to_file;
use crate::migration::{url_to_path, SNAPSHOT_CONFIG_FILE, SNAPSHOT_STATE_FILE};
@ -595,6 +597,14 @@ impl Vm {
.transpose()
.map_err(Error::InitramfsFile)?;
#[cfg(all(feature = "kvm", target_arch = "x86_64"))]
let saved_clock = if let Some(snapshot) = snapshot.as_ref() {
let vm_snapshot = get_vm_snapshot(snapshot).map_err(Error::Restore)?;
vm_snapshot.clock
} else {
None
};
Ok(Vm {
#[cfg(feature = "tdx")]
kernel,
@ -609,7 +619,7 @@ impl Vm {
memory_manager,
vm,
#[cfg(all(feature = "kvm", target_arch = "x86_64"))]
saved_clock: None,
saved_clock,
numa_nodes,
seccomp_action: seccomp_action.clone(),
exit_evt,
@ -2159,18 +2169,6 @@ impl Vm {
.map(|state| *state)
}
/// Load saved clock from snapshot
#[cfg(all(feature = "kvm", target_arch = "x86_64"))]
pub fn load_clock_from_snapshot(
&mut self,
snapshot: &Snapshot,
) -> Result<Option<hypervisor::ClockData>> {
use crate::migration::get_vm_snapshot;
let vm_snapshot = get_vm_snapshot(snapshot).map_err(Error::Restore)?;
self.saved_clock = vm_snapshot.clock;
Ok(self.saved_clock)
}
#[cfg(target_arch = "aarch64")]
/// Add the vGIC section to the VM snapshot.
fn add_vgic_snapshot_section(
@ -2621,10 +2619,6 @@ impl Snapshottable for Vm {
MigratableError::Restore(anyhow!("Could not restore VM state: {:#?}", e))
})?;
#[cfg(all(feature = "kvm", target_arch = "x86_64"))]
self.load_clock_from_snapshot(&_snapshot)
.map_err(|e| MigratableError::Restore(anyhow!("Error restoring clock: {:?}", e)))?;
self.device_manager
.lock()
.unwrap()