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pci: vfio_user: Implement Migratable for VfioUserPciDevice

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Based on the VfioCommon implementation, the VfioUserPciDevice now
implements the Migratable trait.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2022-06-07 16:32:57 +02:00
parent 3b59e57001
commit f48b05eee6
1 changed files with 29 additions and 0 deletions
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29
pci/src/vfio_user.rs
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@ -26,6 +26,7 @@ use vm_memory::bitmap::AtomicBitmap;
use vm_memory::{
Address, GuestAddress, GuestAddressSpace, GuestMemory, GuestMemoryRegion, GuestRegionMmap,
};
use vm_migration::{Migratable, MigratableError, Pausable, Snapshot, Snapshottable, Transportable};
use vmm_sys_util::eventfd::EventFd;
pub struct VfioUserPciDevice {
@ -551,6 +552,34 @@ impl Drop for VfioUserPciDevice {
}
}
impl Pausable for VfioUserPciDevice {}
impl Snapshottable for VfioUserPciDevice {
fn id(&self) -> String {
self.id.clone()
}
fn snapshot(&mut self) -> std::result::Result<Snapshot, MigratableError> {
let mut vfio_pci_dev_snapshot = Snapshot::new(&self.id);
// Snapshot VfioCommon
vfio_pci_dev_snapshot.add_snapshot(self.common.snapshot()?);
Ok(vfio_pci_dev_snapshot)
}
fn restore(&mut self, snapshot: Snapshot) -> std::result::Result<(), MigratableError> {
// Restore VfioCommon
if let Some(vfio_common_snapshot) = snapshot.snapshots.get(&self.common.id()) {
self.common.restore(*vfio_common_snapshot.clone())?;
}
Ok(())
}
}
impl Transportable for VfioUserPciDevice {}
impl Migratable for VfioUserPciDevice {}
pub struct VfioUserDmaMapping<M: GuestAddressSpace> {
client: Arc<Mutex<Client>>,
memory: Arc<M>,