[Qemu-devel] [PATCH 02/14] spice: notify spice server on vm start/stop

[Gerd Hoffmann <kraxel@redhat.com>]

From: Yonit Halperin <yhalperi@redhat.com>

Spice server needs to know about the vm state in order to prevent
attempts to write to devices when they are stopped, mainly during
the non-live stage of migration.
Instead, spice will take care of restoring this writes, on the migration
target side, after migration completes.

Signed-off-by: Yonit Halperin <yhalperi@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 ui/spice-core.c |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/ui/spice-core.c b/ui/spice-core.c
index bb4f585..a515c94 100644
--- a/ui/spice-core.c
+++ b/ui/spice-core.c
@@ -546,6 +546,18 @@ static int add_channel(const char *name, const char *value, void *opaque)
     return 0;
 }
 
+static void vm_change_state_handler(void *opaque, int running,
+                                    RunState state)
+{
+#if SPICE_SERVER_VERSION >= 0x000b02 /* 0.11.2 */
+    if (running) {
+        spice_server_vm_start(spice_server);
+    } else {
+        spice_server_vm_stop(spice_server);
+    }
+#endif
+}
+
 void qemu_spice_init(void)
 {
     QemuOpts *opts = QTAILQ_FIRST(&qemu_spice_opts.head);
@@ -719,6 +731,8 @@ void qemu_spice_init(void)
     qemu_spice_input_init();
     qemu_spice_audio_init();
 
+    qemu_add_vm_change_state_handler(vm_change_state_handler, &spice_server);
+
     g_free(x509_key_file);
     g_free(x509_cert_file);
     g_free(x509_cacert_file);
-- 
1.7.1