[PATCH v2 2/6] tests/qtest/migration-test: Fix and enable test_ignore_shared

[Nicholas Piggin <npiggin@gmail.com>]

This test is already starting to bitrot, so first remove it from ifdef
and fix compile issues. ppc64 transfers about 2MB, so bump the size
threshold too.

It was said to be broken on aarch64 but it may have been the limited shm
size under gitlab CI. The test is now excluded from running on CI so it
shouldn't cause too much annoyance.

So let's try enable it.

Cc: Yury Kotov <yury-kotov@yandex-team.ru>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 tests/qtest/migration-test.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/tests/qtest/migration-test.c b/tests/qtest/migration-test.c
index 04bf1c0092..8247ed98f2 100644
--- a/tests/qtest/migration-test.c
+++ b/tests/qtest/migration-test.c
@@ -1893,14 +1893,15 @@ static void test_precopy_unix_tls_x509_override_host(void)
 #endif /* CONFIG_TASN1 */
 #endif /* CONFIG_GNUTLS */
 
-#if 0
-/* Currently upset on aarch64 TCG */
 static void test_ignore_shared(void)
 {
     g_autofree char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs);
     QTestState *from, *to;
+    MigrateStart args = {
+        .use_shmem = true,
+    };
 
-    if (test_migrate_start(&from, &to, uri, false, true, NULL, NULL)) {
+    if (test_migrate_start(&from, &to, uri, &args)) {
         return;
     }
 
@@ -1925,11 +1926,11 @@ static void test_ignore_shared(void)
     wait_for_migration_complete(from);
 
     /* Check whether shared RAM has been really skipped */
-    g_assert_cmpint(read_ram_property_int(from, "transferred"), <, 1024 * 1024);
+    g_assert_cmpint(read_ram_property_int(from, "transferred"), <,
+                                                   4 * 1024 * 1024);
 
     test_migrate_end(from, to, true);
 }
-#endif
 
 static void *
 test_migrate_xbzrle_start(QTestState *from,
@@ -3580,7 +3581,8 @@ int main(int argc, char **argv)
 #endif /* CONFIG_TASN1 */
 #endif /* CONFIG_GNUTLS */
 
-    /* migration_test_add("/migration/ignore_shared", test_ignore_shared); */
+    migration_test_add("/migration/ignore_shared", test_ignore_shared);
+
 #ifndef _WIN32
     migration_test_add("/migration/precopy/fd/tcp",
                        test_migrate_precopy_fd_socket);
-- 
2.43.0