[RFC 7/8] vdpa: Add feature_log member to vhost_vdpa

[Eugenio Pérez]

This way device's vhost_vdpa can make the choice about exposing or not
the _F_LOG feature.

At the moment is always false.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
---
 include/hw/virtio/vhost-vdpa.h | 1 +
 hw/virtio/vhost-vdpa.c         | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h
index 0c3ed2d69b..b09eae133a 100644
--- a/include/hw/virtio/vhost-vdpa.h
+++ b/include/hw/virtio/vhost-vdpa.h
@@ -33,6 +33,7 @@ typedef struct vhost_vdpa {
     MemoryListener listener;
     struct vhost_vdpa_iova_range iova_range;
     uint64_t acked_features;
+    bool feature_log;
     bool shadow_vqs_enabled;
     /* The listener must send iova tree addresses, not GPA */
     bool listener_shadow_vq;
diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
index d750d9cec1..17513ee820 100644
--- a/hw/virtio/vhost-vdpa.c
+++ b/hw/virtio/vhost-vdpa.c
@@ -1246,7 +1246,7 @@ static int vhost_vdpa_get_features(struct vhost_dev *dev,
     struct vhost_vdpa *v = dev->opaque;
     int ret = vhost_vdpa_get_dev_features(dev, features);
 
-    if (ret == 0 && v->shadow_vqs_enabled) {
+    if (ret == 0 && (v->shadow_vqs_enabled || v->feature_log)) {
         /* Add SVQ logging capabilities */
         *features |= BIT_ULL(VHOST_F_LOG_ALL);
     }
-- 
2.31.1