diff options
Diffstat (limited to 'migration/migration.c')
| -rw-r--r-- | migration/migration.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/migration/migration.c b/migration/migration.c index ae2025d9d8..bda4789193 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -3464,8 +3464,12 @@ static void migration_completion(MigrationState *s) qemu_savevm_state_complete_postcopy(s->to_dst_file); qemu_mutex_unlock_iothread(); - /* Shutdown the postcopy fast path thread */ - if (migrate_postcopy_preempt()) { + /* + * Shutdown the postcopy fast path thread. This is only needed + * when dest QEMU binary is old (7.1/7.2). QEMU 8.0+ doesn't need + * this. + */ + if (migrate_postcopy_preempt() && s->preempt_pre_7_2) { postcopy_preempt_shutdown_file(s); } @@ -4384,6 +4388,15 @@ void migrate_fd_connect(MigrationState *s, Error *error_in) } } + /* + * This needs to be done before resuming a postcopy. Note: for newer + * QEMUs we will delay the channel creation until postcopy_start(), to + * avoid disorder of channel creations. + */ + if (migrate_postcopy_preempt() && s->preempt_pre_7_2) { + postcopy_preempt_setup(s); + } + if (resume) { /* Wakeup the main migration thread to do the recovery */ migrate_set_state(&s->state, MIGRATION_STATUS_POSTCOPY_PAUSED, @@ -4443,6 +4456,8 @@ static Property migration_properties[] = { decompress_error_check, true), DEFINE_PROP_UINT8("x-clear-bitmap-shift", MigrationState, clear_bitmap_shift, CLEAR_BITMAP_SHIFT_DEFAULT), + DEFINE_PROP_BOOL("x-preempt-pre-7-2", MigrationState, + preempt_pre_7_2, false), /* Migration parameters */ DEFINE_PROP_UINT8("x-compress-level", MigrationState, |