diff mbox series

[RFC,v2,03/13] vdpa: copy cvq shadow_data from data vqs, not from x-svq

Message ID 20230112172434.760850-4-eperezma@redhat.com
State New
Headers show
Series Dinamycally switch to vhost shadow virtqueues at vdpa net migration | expand

Commit Message

Eugenio Perez Martin Jan. 12, 2023, 5:24 p.m. UTC 
This allows to passthrough or shadow the data depending on migration
state in next patches.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
---
 net/vhost-vdpa.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
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Patch

diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index 75cca497c8..631424d9c4 100644
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -412,7 +412,6 @@  static int vhost_vdpa_net_cvq_start(NetClientState *nc)
     s = DO_UPCAST(VhostVDPAState, nc, nc);
     v = &s->vhost_vdpa;
 
-    v->shadow_data = s->always_svq;
     v->shadow_vqs_enabled = s->always_svq;
     s->vhost_vdpa.address_space_id = VHOST_VDPA_GUEST_PA_ASID;
 
@@ -482,6 +481,12 @@  out:
                                            v->iova_range.last);
     }
 
+    /*
+     * Memory listener is registered against CVQ vhost device, but different
+     * ASID may enable individually SVQ. Let's copy data vqs value here.
+     */
+    v->shadow_data = s0->vhost_vdpa.shadow_data;
+
     r = vhost_vdpa_cvq_map_buf(&s->vhost_vdpa, s->cvq_cmd_out_buffer,
                                vhost_vdpa_net_cvq_cmd_page_len(), false);
     if (unlikely(r < 0)) {