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postcopy: Wire up loadvm_postcopy_handle_ commands

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Wire up more of the handlers for the commands on the destination side,
in particular loadvm_postcopy_handle_run now has enough to start the
guest running.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2015-11-05 18:11:19 +00:00 committed by Juan Quintela
parent c76201ab52
commit 27c6825bd3
2 changed files with 29 additions and 1 deletions
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28
migration/savevm.c
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@ -1479,12 +1479,33 @@ static int loadvm_postcopy_handle_listen(MigrationIncomingState *mis)
static int loadvm_postcopy_handle_run(MigrationIncomingState *mis)
{
PostcopyState ps = postcopy_state_set(POSTCOPY_INCOMING_RUNNING);
Error *local_err = NULL;
trace_loadvm_postcopy_handle_run();
if (ps != POSTCOPY_INCOMING_LISTENING) {
error_report("CMD_POSTCOPY_RUN in wrong postcopy state (%d)", ps);
return -1;
}
/* TODO we should move all of this lot into postcopy_ram.c or a shared code
* in migration.c
*/
cpu_synchronize_all_post_init();
qemu_announce_self();
/* Make sure all file formats flush their mutable metadata */
bdrv_invalidate_cache_all(&local_err);
if (local_err) {
error_report_err(local_err);
return -1;
}
trace_loadvm_postcopy_handle_run_cpu_sync();
cpu_synchronize_all_post_init();
trace_loadvm_postcopy_handle_run_vmstart();
if (autostart) {
/* Hold onto your hats, starting the CPU */
vm_start();
@ -1493,7 +1514,12 @@ static int loadvm_postcopy_handle_run(MigrationIncomingState *mis)
runstate_set(RUN_STATE_PAUSED);
}
return 0;
/* We need to finish reading the stream from the package
* and also stop reading anything more from the stream that loaded the
* package (since it's now being read by the listener thread).
* LOADVM_QUIT will quit all the layers of nested loadvm loops.
*/
return LOADVM_QUIT;
}
/**

2
trace-events
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@ -1215,6 +1215,8 @@ loadvm_handle_cmd_packaged_received(int ret) "%d"
loadvm_postcopy_handle_advise(void) ""
loadvm_postcopy_handle_listen(void) ""
loadvm_postcopy_handle_run(void) ""
loadvm_postcopy_handle_run_cpu_sync(void) ""
loadvm_postcopy_handle_run_vmstart(void) ""
loadvm_postcopy_ram_handle_discard(void) ""
loadvm_postcopy_ram_handle_discard_end(void) ""
loadvm_postcopy_ram_handle_discard_header(const char *ramid, uint16_t len) "%s: %ud"