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devices: Move to versioned snapshots

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Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford
2021-05-11 14:26:09 +00:00
committed by Sebastien Boeuf
parent c03fe508c1
commit 1205bce0ef
7 changed files with 52 additions and 29 deletions
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14
devices/src/legacy/uart_pl011.rs
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@@ -11,9 +11,13 @@ use std::collections::VecDeque;
use std::fmt;
use std::sync::{Arc, Barrier};
use std::{io, result};
use versionize::{VersionMap, Versionize, VersionizeResult};
use versionize_derive::Versionize;
use vm_device::interrupt::InterruptSourceGroup;
use vm_device::BusDevice;
use vm_migration::{Migratable, MigratableError, Pausable, Snapshot, Snapshottable, Transportable};
use vm_migration::{
Migratable, MigratableError, Pausable, Snapshot, Snapshottable, Transportable, VersionMapped,
};
/* Registers */
const UARTDR: u64 = 0;
@@ -86,7 +90,7 @@ pub struct Pl011 {
out: Option<Box<dyn io::Write + Send>>,
}
#[derive(Serialize, Deserialize)]
#[derive(Versionize)]
pub struct Pl011State {
flags: u32,
lcr: u32,
@@ -104,6 +108,8 @@ pub struct Pl011State {
read_trigger: u32,
}
impl VersionMapped for Pl011State {}
impl Pl011 {
/// Constructs an AMBA PL011 UART device.
pub fn new(
@@ -357,11 +363,11 @@ impl Snapshottable for Pl011 {
}
fn snapshot(&mut self) -> std::result::Result<Snapshot, MigratableError> {
Snapshot::new_from_state(&self.id, &self.state())
Snapshot::new_from_versioned_state(&self.id, &self.state())
}
fn restore(&mut self, snapshot: Snapshot) -> std::result::Result<(), MigratableError> {
self.set_state(&snapshot.to_state(&self.id)?);
self.set_state(&snapshot.to_versioned_state(&self.id)?);
Ok(())
}
}