vmm: Add ResetError type

Signed-off-by: Adam Jensen <[email protected]>

src/vmm/src/devices/virtio/mod.rs

@@ -70,6 +70,13 @@ pub enum ActivateError {
     VhostUser(vhost_user::VhostUserError),
 }
 
+// Errors triggered when resetting a VirtioDevice.
+#[derive(Debug, thiserror::Error, displaydoc::Display)]
+pub enum ResetError {
+    /// Reset is not implemented for the device.
+    NotImplemented,
+}
+
 /// Trait that helps in upcasting an object to Any
 pub trait AsAny {
     /// Return the immutable any encapsulated object.