diff mbox series

[11/12] vdpa: indicate transitional state for SVQ switching

Message ID 1707910082-10243-12-git-send-email-si-wei.liu@oracle.com (mailing list archive)
State New, archived
Headers show
Series Preparatory patches for live migration downtime improvement | expand

Commit Message

Si-Wei Liu Feb. 14, 2024, 11:28 a.m. UTC 
svq_switching indicates the transitional state whether
or not SVQ mode switching is in progress, and towards
which direction. Add the neccessary state around where
the switching would take place.

Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>
---
 net/vhost-vdpa.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index 9f25221..96d95b9 100644
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -317,6 +317,8 @@  static void vhost_vdpa_net_log_global_enable(VhostVDPAState *s, bool enable)
     data_queue_pairs = n->multiqueue ? n->max_queue_pairs : 1;
     cvq = virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ) ?
                                   n->max_ncs - n->max_queue_pairs : 0;
+    v->shared->svq_switching = enable ?
+        SVQ_TSTATE_ENABLING : SVQ_TSTATE_DISABLING;
     /*
      * TODO: vhost_net_stop does suspend, get_base and reset. We can be smarter
      * in the future and resume the device if read-only operations between
@@ -329,6 +331,7 @@  static void vhost_vdpa_net_log_global_enable(VhostVDPAState *s, bool enable)
     if (unlikely(r < 0)) {
         error_report("unable to start vhost net: %s(%d)", g_strerror(-r), -r);
     }
+    v->shared->svq_switching = SVQ_TSTATE_DONE;
 }
 
 static void vdpa_net_migration_state_notifier(Notifier *notifier, void *data)