virt_mshv: init vm after creation (#2059)

To configure custom VM features during VM creation, the create and
initialize steps have been broken up in mshv-ioctls, starting with:

1afa433 mshv-ioctls: Don't initialize partition after creation

So, any uses of v0.5.0 and newer versions of mshv-ioctls should
explicitly initialize the vm after creation.

---------

Signed-off-by: Praveen K Paladugu <[email protected]>
Co-authored-by: Copilot <[email protected]>

Author: praveen-pk

vmm_core/virt_mshv/src/lib.rs

@@ -138,6 +138,9 @@ impl virt::Hypervisor for LinuxMshv {
             break;
         }
 
+        vmfd.initialize()
+            .map_err(|e| Error::CreateVMInitFailed(e.into()))?;
+
         // Create virtual CPUs.
         let mut vps: Vec<MshvVpInner> = Vec::new();
         for vp in config.processor_topology.vps_arch() {
@@ -1076,6 +1079,8 @@ pub enum Error {
     NotSupported,
     #[error("create_vm failed")]
     CreateVMFailed,
+    #[error("failed to initialize VM")]
+    CreateVMInitFailed(#[source] anyhow::Error),
     #[error("failed to create VCPU")]
     CreateVcpu(#[source] MshvError),
     #[error("vtl2 not supported")]