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vmm: pause/resume VM during the VM events

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For MSHV we always create frozen partition, so we
resume the VM during boot. Also during pause and resume
VM events we call hypervisor specific API.

Signed-off-by: Muminul Islam <muislam@microsoft.com>
This commit is contained in:
Muminul Islam 2024-05-01 15:19:41 -07:00 committed by Rob Bradford
parent a5a41bf797
commit 860939d677
1 changed files with 20 additions and 0 deletions
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20
vmm/src/vm.rs
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@ -319,6 +319,9 @@ pub enum Error {
#[error("Error injecting NMI")]
ErrorNmi,
#[error("Error resuming the VM: {0}")]
ResumeVm(#[source] hypervisor::HypervisorVmError),
}
pub type Result<T> = result::Result<T, Error>;
@ -2173,6 +2176,11 @@ impl Vm {
self.vm.tdx_finalize().map_err(Error::FinalizeTdx)?;
}
// Resume the vm for MSHV
if current_state == VmState::Created {
self.vm.resume().map_err(Error::ResumeVm)?;
}
self.cpu_manager
.lock()
.unwrap()
@ -2487,6 +2495,10 @@ impl Pausable for Vm {
self.cpu_manager.lock().unwrap().pause()?;
self.device_manager.lock().unwrap().pause()?;
self.vm
.pause()
.map_err(|e| MigratableError::Pause(anyhow!("Could not pause the VM: {}", e)))?;
*state = new_state;
event!("vm", "paused");
@ -2495,6 +2507,7 @@ impl Pausable for Vm {
fn resume(&mut self) -> std::result::Result<(), MigratableError> {
event!("vm", "resuming");
let current_state = self.get_state().unwrap();
let mut state = self
.state
.try_write()
@ -2514,6 +2527,13 @@ impl Pausable for Vm {
})?;
}
}
if current_state == VmState::Paused {
self.vm
.resume()
.map_err(|e| MigratableError::Resume(anyhow!("Could not resume the VM: {}", e)))?;
}
self.device_manager.lock().unwrap().resume()?;
// And we're back to the Running state.