postcopy: Add notifier chain

Add a notifier chain for postcopy with a 'reason' flag
and an opportunity for a notifier member to return an error.

Call it when enabling postcopy.

This will initially used to enable devices to declare they're unable
to postcopy and later to notify of devices of stages within postcopy.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/vl.c b/vl.c
index 3ef04ce991..0b1581107f 100644
--- a/vl.c
+++ b/vl.c
@@ -94,6 +94,7 @@ int main(int argc, char **argv)
 #include "audio/audio.h"
 #include "sysemu/cpus.h"
 #include "migration/colo.h"
+#include "migration/postcopy-ram.h"
 #include "sysemu/kvm.h"
 #include "sysemu/hax.h"
 #include "qapi/qobject-input-visitor.h"
@@ -3101,6 +3102,7 @@ int main(int argc, char **argv, char **envp)
     module_call_init(MODULE_INIT_OPTS);
 
     runstate_init();
+    postcopy_infrastructure_init();
 
     if (qcrypto_init(&err) < 0) {
         error_reportf_err(err, "cannot initialize crypto: ");