vm-migration: Derive Versionize for MemoryRangeTable structure

During snapshot/restore we will need to store this structure, which is
why it must derive the Versionize trait.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>

vm-migration/src/protocol.rs

@@ -3,7 +3,10 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 
-use crate::MigratableError;
+use crate::{MigratableError, VersionMapped};
+use std::io::{Read, Write};
+use versionize::{VersionMap, Versionize, VersionizeResult};
+use versionize_derive::Versionize;
 use vm_memory::ByteValued;
 
 // Migration protocol
@@ -28,8 +31,6 @@ use vm_memory::ByteValued;
 // The destination can at any time send an "error response" to cancel
 // The source can at any time send an "abandon request" to cancel
 
-use std::io::{Read, Write};
-
 #[repr(u16)]
 #[derive(Copy, Clone)]
 pub enum Command {
@@ -173,16 +174,19 @@ impl Response {
 unsafe impl ByteValued for Response {}
 
 #[repr(C)]
+#[derive(Clone, Versionize)]
 pub struct MemoryRange {
     pub gpa: u64,
     pub length: u64,
 }
 
-#[derive(Default)]
+#[derive(Clone, Default, Versionize)]
 pub struct MemoryRangeTable {
     data: Vec<MemoryRange>,
 }
 
+impl VersionMapped for MemoryRangeTable {}
+
 impl MemoryRangeTable {
     pub fn from_bitmap(bitmap: Vec<u64>, start_addr: u64, page_size: u64) -> Self {
         let mut table = MemoryRangeTable::default();