Current code depends on virtio_queue_update_rings() to setup address
space cache. But this does not work for 1.0 device since we can't infer
avail and used. Fixing this by calling virtio_init_region_cache()
after subsections load which can guarantee avail and used are correct.
Fixes: 97cd965c0701 ("virtio: use VRingMemoryRegionCaches for avail
and used rings")
Cc: Paolo Bonzini <pbonz...@redhat.com>
Signed-off-by: Jason Wang <jasow...@redhat.com>
---
hw/virtio/virtio.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index 23483c7..faa45cb 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -2059,6 +2059,7 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f, int
version_id)
rcu_read_lock();
for (i = 0; i < num; i++) {
+ virtio_init_region_cache(vdev, i);
if (vdev->vq[i].vring.desc) {
uint16_t nheads;
nheads = vring_avail_idx(&vdev->vq[i]) -
vdev->vq[i].last_avail_idx;
--
2.7.4
