vmm: Export VmMigrationConfig as public

Expose VmMigrationConfig as a public facing structure that can be used
by an offload daemon to act as if it was the VM to migrate to, or the VM
to migrate from.

Signed-off-by: Sebastien Boeuf <sboeuf@meta.com>
Assisted-by: Claude:claude-opus-4-7

vmm/src/lib.rs

@@ -587,13 +587,19 @@ where
 }
 
 #[derive(Clone, Deserialize, Serialize)]
-struct VmMigrationConfig {
+pub struct VmMigrationConfig {
     vm_config: Arc<Mutex<VmConfig>>,
     #[cfg(all(feature = "kvm", target_arch = "x86_64"))]
     common_cpuid: Vec<hypervisor::arch::x86::CpuIdEntry>,
     memory_manager_data: MemoryManagerSnapshotData,
 }
 
+impl VmMigrationConfig {
+    pub fn memory_manager_data(&self) -> &MemoryManagerSnapshotData {
+        &self.memory_manager_data
+    }
+}
+
 #[derive(Debug, Clone)]
 pub struct VmmVersionInfo {
     pub build_version: String,