diff mbox series

[v3,03/14] vdpa: Negotiate _F_SUSPEND feature

Message ID 20230215173850.298832-4-eperezma@redhat.com (mailing list archive)
State New, archived
Headers show
Series Dynamically switch to vhost shadow virtqueues at vdpa net migration | expand

Commit Message

Eugenio Perez Martin Feb. 15, 2023, 5:38 p.m. UTC 
This is needed for qemu to know it can suspend the device to retrieve
its status and enable SVQ with it, so all the process is transparent to
the guest.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
---
 hw/virtio/vhost-vdpa.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
index 300062130d..1d0209d6ad 100644
--- a/hw/virtio/vhost-vdpa.c
+++ b/hw/virtio/vhost-vdpa.c
@@ -659,7 +659,8 @@  static int vhost_vdpa_set_backend_cap(struct vhost_dev *dev)
     uint64_t features;
     uint64_t f = 0x1ULL << VHOST_BACKEND_F_IOTLB_MSG_V2 |
         0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH |
-        0x1ULL << VHOST_BACKEND_F_IOTLB_ASID;
+        0x1ULL << VHOST_BACKEND_F_IOTLB_ASID |
+        0x1ULL << VHOST_BACKEND_F_SUSPEND;
     int r;
 
     if (vhost_vdpa_call(dev, VHOST_GET_BACKEND_FEATURES, &features)) {