Re: [PATCH v2 09/13] vdpa net: block migration if the device has CVQ

[Jason Wang]

在 2023/2/8 17:42, Eugenio Pérez 写道:

Devices with CVQ needs to migrate state beyond vq state.  Leaving this
to future series.

I may miss something but what is missed to support CVQ/MQ?

Thanks

Signed-off-by: Eugenio Pérez <epere...@redhat.com>
---
  net/vhost-vdpa.c | 6 ++++++
  1 file changed, 6 insertions(+)

diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index bca13f97fd..309861e56c 100644
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -955,11 +955,17 @@ int net_init_vhost_vdpa(const Netdev *netdev, const char 
*name,
      }

if (has_cvq) {

+        VhostVDPAState *s;
+
          nc = net_vhost_vdpa_init(peer, TYPE_VHOST_VDPA, name,
                                   vdpa_device_fd, i, 1, false,
                                   opts->x_svq, iova_range);
          if (!nc)
              goto err;
+
+        s = DO_UPCAST(VhostVDPAState, nc, nc);
+        error_setg(&s->vhost_vdpa.dev->migration_blocker,
+                   "net vdpa cannot migrate with MQ feature");
      }

return 0;