diff mbox series

[v4,3/6] vdpa: Allocate SVQ unconditionally

Message ID 20220805163909.872646-4-eperezma@redhat.com
State New
Headers show
Series ASID support in vhost-vdpa net | expand

Commit Message

Eugenio Perez Martin Aug. 5, 2022, 4:39 p.m. UTC 
SVQ may run or not in a device depending on runtime conditions (for
example, if the device can move CVQ to its own group or not).

Allocate the resources unconditionally, and decide later if to use them
or not.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
---
 hw/virtio/vhost-vdpa.c | 33 +++++++++++++++------------------
 1 file changed, 15 insertions(+), 18 deletions(-)
diff mbox series

Patch

diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
index cc71ea750e..34922ec20d 100644
--- a/hw/virtio/vhost-vdpa.c
+++ b/hw/virtio/vhost-vdpa.c
@@ -410,6 +410,21 @@  static int vhost_vdpa_init_svq(struct vhost_dev *hdev, struct vhost_vdpa *v,
     int r;
     bool ok;
 
+    shadow_vqs = g_ptr_array_new_full(hdev->nvqs, vhost_svq_free);
+    for (unsigned n = 0; n < hdev->nvqs; ++n) {
+        g_autoptr(VhostShadowVirtqueue) svq;
+
+        svq = vhost_svq_new(v->iova_tree, v->shadow_vq_ops,
+                            v->shadow_vq_ops_opaque);
+        if (unlikely(!svq)) {
+            error_setg(errp, "Cannot create svq %u", n);
+            return -1;
+        }
+        g_ptr_array_add(shadow_vqs, g_steal_pointer(&svq));
+    }
+
+    v->shadow_vqs = g_steal_pointer(&shadow_vqs);
+
     if (!v->shadow_vqs_enabled) {
         return 0;
     }
@@ -426,20 +441,6 @@  static int vhost_vdpa_init_svq(struct vhost_dev *hdev, struct vhost_vdpa *v,
         return -1;
     }
 
-    shadow_vqs = g_ptr_array_new_full(hdev->nvqs, vhost_svq_free);
-    for (unsigned n = 0; n < hdev->nvqs; ++n) {
-        g_autoptr(VhostShadowVirtqueue) svq;
-
-        svq = vhost_svq_new(v->iova_tree, v->shadow_vq_ops,
-                            v->shadow_vq_ops_opaque);
-        if (unlikely(!svq)) {
-            error_setg(errp, "Cannot create svq %u", n);
-            return -1;
-        }
-        g_ptr_array_add(shadow_vqs, g_steal_pointer(&svq));
-    }
-
-    v->shadow_vqs = g_steal_pointer(&shadow_vqs);
     return 0;
 }
 
@@ -580,10 +581,6 @@  static void vhost_vdpa_svq_cleanup(struct vhost_dev *dev)
     struct vhost_vdpa *v = dev->opaque;
     size_t idx;
 
-    if (!v->shadow_vqs) {
-        return;
-    }
-
     for (idx = 0; idx < v->shadow_vqs->len; ++idx) {
         vhost_svq_stop(g_ptr_array_index(v->shadow_vqs, idx));
     }