diff options
Diffstat (limited to 'migration/migration.c')
| -rw-r--r-- | migration/migration.c | 39 |
1 files changed, 26 insertions, 13 deletions
diff --git a/migration/migration.c b/migration/migration.c index 067dd92..266cd39 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -1443,6 +1443,11 @@ bool migrate_postcopy_ram(void) return s->enabled_capabilities[MIGRATION_CAPABILITY_POSTCOPY_RAM]; } +bool migrate_postcopy(void) +{ + return migrate_postcopy_ram(); +} + bool migrate_auto_converge(void) { MigrationState *s; @@ -1826,9 +1831,11 @@ static int postcopy_start(MigrationState *ms, bool *old_vm_running) * need to tell the destination to throw any pages it's already received * that are dirty */ - if (ram_postcopy_send_discard_bitmap(ms)) { - error_report("postcopy send discard bitmap failed"); - goto fail; + if (migrate_postcopy_ram()) { + if (ram_postcopy_send_discard_bitmap(ms)) { + error_report("postcopy send discard bitmap failed"); + goto fail; + } } /* @@ -1837,8 +1844,10 @@ static int postcopy_start(MigrationState *ms, bool *old_vm_running) * wrap their state up here */ qemu_file_set_rate_limit(ms->to_dst_file, INT64_MAX); - /* Ping just for debugging, helps line traces up */ - qemu_savevm_send_ping(ms->to_dst_file, 2); + if (migrate_postcopy_ram()) { + /* Ping just for debugging, helps line traces up */ + qemu_savevm_send_ping(ms->to_dst_file, 2); + } /* * While loading the device state we may trigger page transfer @@ -1863,7 +1872,9 @@ static int postcopy_start(MigrationState *ms, bool *old_vm_running) qemu_savevm_send_postcopy_listen(fb); qemu_savevm_state_complete_precopy(fb, false, false); - qemu_savevm_send_ping(fb, 3); + if (migrate_postcopy_ram()) { + qemu_savevm_send_ping(fb, 3); + } qemu_savevm_send_postcopy_run(fb); @@ -1898,11 +1909,13 @@ static int postcopy_start(MigrationState *ms, bool *old_vm_running) qemu_mutex_unlock_iothread(); - /* - * Although this ping is just for debug, it could potentially be - * used for getting a better measurement of downtime at the source. - */ - qemu_savevm_send_ping(ms->to_dst_file, 4); + if (migrate_postcopy_ram()) { + /* + * Although this ping is just for debug, it could potentially be + * used for getting a better measurement of downtime at the source. + */ + qemu_savevm_send_ping(ms->to_dst_file, 4); + } if (migrate_release_ram()) { ram_postcopy_migrated_memory_release(ms); @@ -2080,7 +2093,7 @@ static void *migration_thread(void *opaque) qemu_savevm_send_ping(s->to_dst_file, 1); } - if (migrate_postcopy_ram()) { + if (migrate_postcopy()) { /* * Tell the destination that we *might* want to do postcopy later; * if the other end can't do postcopy it should fail now, nice and @@ -2113,7 +2126,7 @@ static void *migration_thread(void *opaque) if (pending_size && pending_size >= threshold_size) { /* Still a significant amount to transfer */ - if (migrate_postcopy_ram() && + if (migrate_postcopy() && s->state != MIGRATION_STATUS_POSTCOPY_ACTIVE && pend_nonpost <= threshold_size && atomic_read(&s->start_postcopy)) { |