diff options
Diffstat (limited to 'hw/scsi')
| -rw-r--r-- | hw/scsi/virtio-scsi-dataplane.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/hw/scsi/virtio-scsi-dataplane.c b/hw/scsi/virtio-scsi-dataplane.c index 8bb6e6a..20bb917 100644 --- a/hw/scsi/virtio-scsi-dataplane.c +++ b/hw/scsi/virtio-scsi-dataplane.c @@ -136,6 +136,14 @@ int virtio_scsi_dataplane_start(VirtIODevice *vdev) memory_region_transaction_commit(); + /* + * These fields are visible to the IOThread so we rely on implicit barriers + * in aio_context_acquire() on the write side and aio_notify_accept() on + * the read side. + */ + s->dataplane_starting = false; + s->dataplane_started = true; + aio_context_acquire(s->ctx); virtio_queue_aio_attach_host_notifier(vs->ctrl_vq, s->ctx); virtio_queue_aio_attach_host_notifier_no_poll(vs->event_vq, s->ctx); @@ -143,9 +151,6 @@ int virtio_scsi_dataplane_start(VirtIODevice *vdev) for (i = 0; i < vs->conf.num_queues; i++) { virtio_queue_aio_attach_host_notifier(vs->cmd_vqs[i], s->ctx); } - - s->dataplane_starting = false; - s->dataplane_started = true; aio_context_release(s->ctx); return 0; |