diff options
| -rw-r--r-- | include/migration/vmstate.h | 1 | ||||
| -rw-r--r-- | include/sysemu/sysemu.h | 1 | ||||
| -rw-r--r-- | migration/ram.c | 1 | ||||
| -rw-r--r-- | migration/savevm.c | 49 |
4 files changed, 50 insertions, 2 deletions
diff --git a/include/migration/vmstate.h b/include/migration/vmstate.h index 7f16a38..7267e38 100644 --- a/include/migration/vmstate.h +++ b/include/migration/vmstate.h @@ -40,6 +40,7 @@ typedef struct SaveVMHandlers { SaveStateHandler *save_state; void (*cleanup)(void *opaque); + int (*save_live_complete_postcopy)(QEMUFile *f, void *opaque); int (*save_live_complete_precopy)(QEMUFile *f, void *opaque); /* This runs both outside and inside the iothread lock. */ diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h index 70835d0..76a0b36 100644 --- a/include/sysemu/sysemu.h +++ b/include/sysemu/sysemu.h @@ -111,6 +111,7 @@ void qemu_savevm_state_begin(QEMUFile *f, void qemu_savevm_state_header(QEMUFile *f); int qemu_savevm_state_iterate(QEMUFile *f); void qemu_savevm_state_cleanup(void); +void qemu_savevm_state_complete_postcopy(QEMUFile *f); void qemu_savevm_state_complete_precopy(QEMUFile *f); void qemu_savevm_state_pending(QEMUFile *f, uint64_t max_size, uint64_t *res_non_postcopiable, diff --git a/migration/ram.c b/migration/ram.c index 0e53325..4053ca1 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -1704,6 +1704,7 @@ static int ram_load(QEMUFile *f, void *opaque, int version_id) static SaveVMHandlers savevm_ram_handlers = { .save_live_setup = ram_save_setup, .save_live_iterate = ram_save_iterate, + .save_live_complete_postcopy = ram_save_complete, .save_live_complete_precopy = ram_save_complete, .save_live_pending = ram_save_pending, .load_state = ram_load, diff --git a/migration/savevm.c b/migration/savevm.c index be61eb1..8e11877 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -978,19 +978,61 @@ static bool should_send_vmdesc(void) return !machine->suppress_vmdesc && !in_postcopy; } +/* + * Calls the save_live_complete_postcopy methods + * causing the last few pages to be sent immediately and doing any associated + * cleanup. + * Note postcopy also calls qemu_savevm_state_complete_precopy to complete + * all the other devices, but that happens at the point we switch to postcopy. + */ +void qemu_savevm_state_complete_postcopy(QEMUFile *f) +{ + SaveStateEntry *se; + int ret; + + QTAILQ_FOREACH(se, &savevm_state.handlers, entry) { + if (!se->ops || !se->ops->save_live_complete_postcopy) { + continue; + } + if (se->ops && se->ops->is_active) { + if (!se->ops->is_active(se->opaque)) { + continue; + } + } + trace_savevm_section_start(se->idstr, se->section_id); + /* Section type */ + qemu_put_byte(f, QEMU_VM_SECTION_END); + qemu_put_be32(f, se->section_id); + + ret = se->ops->save_live_complete_postcopy(f, se->opaque); + trace_savevm_section_end(se->idstr, se->section_id, ret); + save_section_footer(f, se); + if (ret < 0) { + qemu_file_set_error(f, ret); + return; + } + } + + qemu_put_byte(f, QEMU_VM_EOF); + qemu_fflush(f); +} + void qemu_savevm_state_complete_precopy(QEMUFile *f) { QJSON *vmdesc; int vmdesc_len; SaveStateEntry *se; int ret; + bool in_postcopy = migration_in_postcopy(migrate_get_current()); trace_savevm_state_complete_precopy(); cpu_synchronize_all_states(); QTAILQ_FOREACH(se, &savevm_state.handlers, entry) { - if (!se->ops || !se->ops->save_live_complete_precopy) { + if (!se->ops || + (in_postcopy && se->ops->save_live_complete_postcopy) || + !se->ops->save_live_complete_precopy) { continue; } if (se->ops && se->ops->is_active) { @@ -1039,7 +1081,10 @@ void qemu_savevm_state_complete_precopy(QEMUFile *f) save_section_footer(f, se); } - qemu_put_byte(f, QEMU_VM_EOF); + if (!in_postcopy) { + /* Postcopy stream will still be going */ + qemu_put_byte(f, QEMU_VM_EOF); + } json_end_array(vmdesc); qjson_finish(vmdesc); |
