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hypervisor: implement pause/resume API for MSHV

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Implementing pause/Resume API for MSHV.
Here we set/reset the partition property(TIME_FREEZE)

Signed-off-by: Muminul Islam <muislam@microsoft.com>
This commit is contained in:
Muminul Islam 2024-05-01 14:46:04 -07:00 committed by Rob Bradford
parent 3fe9b87736
commit aabfc9513e
2 changed files with 36 additions and 0 deletions
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32
hypervisor/src/mshv/mod.rs
View File

@ -2076,4 +2076,36 @@ impl vm::Vm for MshvVm {
fn get_preferred_target(&self, kvi: &mut VcpuInit) -> vm::Result<()> {
unimplemented!()
}
/// Pause the VM
fn pause(&self) -> vm::Result<()> {
// Freeze the partition
self.fd
.set_partition_property(
hv_partition_property_code_HV_PARTITION_PROPERTY_TIME_FREEZE,
1u64,
)
.map_err(|e| {
vm::HypervisorVmError::SetVmProperty(anyhow!(
"Failed to set partition property: {}",
e
))
})
}
/// Resume the VM
fn resume(&self) -> vm::Result<()> {
// Resuming the partition using TIME_FREEZE property
self.fd
.set_partition_property(
hv_partition_property_code_HV_PARTITION_PROPERTY_TIME_FREEZE,
0u64,
)
.map_err(|e| {
vm::HypervisorVmError::SetVmProperty(anyhow!(
"Failed to set partition property: {}",
e
))
})
}
}

4
hypervisor/src/vm.rs
View File

@ -231,6 +231,10 @@ pub enum HypervisorVmError {
///
#[error("Failed to complete isolated import: {0}")]
CompleteIsolatedImport(#[source] anyhow::Error),
/// Failed to set VM property
///
#[error("Failed to set VM property: {0}")]
SetVmProperty(#[source] anyhow::Error),
}
///
/// Result type for returning from a function