spice: do not stop spice if VM is paused

spice_server_vm_start/stop() was added to help migration state (commit
f5bb039c6d97ef3e664094eab3c9a4dc1824ed73).

However, a paused VM could keep running the spice server. This will
allow a Spice client to keep sending commands to a spice chardev. This
allows to stop/cont a VM from a Spice monitor port. Character
devices (vdagent/usb/smartcard/..) should not read from Spice when the
VM is paused.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Tested-by: Victor Toso <victortoso@redhat.com>
Message-id: 20190221110703.5775-6-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

diff --git a/ui/spice-core.c b/ui/spice-core.c
index 1cc996027719256d06e82a34a3b2467be411913e..4d384974ca3460f63aa147b6554c701508ce6814 100644 (file)
--- a/ui/spice-core.c
+++ b/ui/spice-core.c
@@ -628,7 +628,7 @@ static void vm_change_state_handler(void *opaque, int running,
 {
     if (running) {
         qemu_spice_display_start();
-    } else {
+    } else if (state != RUN_STATE_PAUSED) {
         qemu_spice_display_stop();
     }
 }