[V4,10/11] tests/qtest: postcopy migration with suspend

Commit Message

Steven Sistare Aug. 29, 2023, 6:18 p.m. UTC

Add a test case to verify that the suspended state is handled correctly by
live migration postcopy.  The test suspends the src, migrates, then wakes
the dest.

Signed-off-by: Steve Sistare <[e-mail]>
---
 tests/qtest/migration-test.c | 26 ++++++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

Patch

diff --git a/tests/qtest/migration-test.c b/tests/qtest/migration-test.c
index cc508ef..6306fb0 100644
--- a/tests/qtest/migration-test.c
+++ b/tests/qtest/migration-test.c
@@ -599,8 +599,12 @@  static void migrate_postcopy_start(QTestState *from, QTestState *to)
 {
     qtest_qmp_assert_success(from, "{ 'execute': 'migrate-start-postcopy' }");
 
-    wait_for_stop(from, &src_state);
-    qtest_qmp_eventwait(to, "RESUME");
+    if (src_state.suspend_me) {
+        wait_for_suspend(from, &src_state);
+    } else {
+        wait_for_stop(from, &src_state);
+        qtest_qmp_eventwait(to, "RESUME");
+    }
 }
 
 typedef struct {
@@ -1299,6 +1303,11 @@  static void migrate_postcopy_complete(QTestState *from, QTestState *to,
 {
     wait_for_migration_complete(from);
 
+    if (args->start.suspend_me) {
+        /* wakeup succeeds only if guest is suspended */
+        qtest_qmp_assert_success(to, "{'execute': 'system_wakeup'}");
+    }
+
     /* Make sure we get at least one "B" on destination */
     wait_for_serial("dest_serial");
 
@@ -1332,6 +1341,15 @@  static void test_postcopy(void)
     test_postcopy_common(&args);
 }
 
+static void test_postcopy_suspend(void)
+{
+    MigrateCommon args = {
+        .start.suspend_me = true,
+    };
+
+    test_postcopy_common(&args);
+}
+
 static void test_postcopy_compress(void)
 {
     MigrateCommon args = {
@@ -2884,6 +2902,10 @@  int main(int argc, char **argv)
             qtest_add_func("/migration/postcopy/recovery/compress/plain",
                            test_postcopy_recovery_compress);
         }
+        if (is_x86) {
+            qtest_add_func("/migration/postcopy/suspend",
+                           test_postcopy_suspend);
+        }
     }
 
     qtest_add_func("/migration/bad_dest", test_baddest);