[PATCH] vfio-user: reject failover during init

Virtio-net failover is a networking feature that relies on a primary
and standby device pair. This is not currently supported for vfio-user.
Refuse initialization if this property is set.

Change-Id: I80989ddb08a1cd3eba84bcf9b0edc26cb4a65669
Signed-off-by: Hugo Komatsu <[email protected]>
---
 hw/vfio-user/pci.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/hw/vfio-user/pci.c b/hw/vfio-user/pci.c
index ecc59a9642..34fa2f22b3 100644
--- a/hw/vfio-user/pci.c
+++ b/hw/vfio-user/pci.c
@@ -251,6 +251,11 @@ static void vfio_user_pci_realize(PCIDevice *pdev, Error **errp)
         return;
     }
 
+    if (pdev->failover_pair_id) {
+        error_setg(errp, "vfio-user: failover is not supported");
+        return;
+    }
+
     sock_name = udev->socket->u.q_unix.path;
 
     vbasedev->name = g_strdup_printf("vfio-user:%s", sock_name);
-- 
2.39.3