> On Sep 22, 2023, at 7:46 AM, Li Feng <fen...@smartx.com> wrote: > > Currently the get_inflight_fd will be sent every time the device is started, > and > the backend will allocate shared memory to save the inflight state. If the > backend finds that it receives the second get_inflight_fd, it will release the > previous shared memory, which breaks inflight working logic. > > This patch is a preparation for the following patches.
This looks identical to the v3 patch I reviewed? If I’ve missed something can you please point it out? > Signed-off-by: Li Feng <fen...@smartx.com> > --- > hw/scsi/vhost-scsi-common.c | 37 ++++++++++++++++++------------------- > 1 file changed, 18 insertions(+), 19 deletions(-) > > diff --git a/hw/scsi/vhost-scsi-common.c b/hw/scsi/vhost-scsi-common.c > index a06f01af26..a61cd0e907 100644 > --- a/hw/scsi/vhost-scsi-common.c > +++ b/hw/scsi/vhost-scsi-common.c > @@ -52,20 +52,28 @@ int vhost_scsi_common_start(VHostSCSICommon *vsc) > > vsc->dev.acked_features = vdev->guest_features; > > - assert(vsc->inflight == NULL); > - vsc->inflight = g_new0(struct vhost_inflight, 1); > - ret = vhost_dev_get_inflight(&vsc->dev, > - vs->conf.virtqueue_size, > - vsc->inflight); > + ret = vhost_dev_prepare_inflight(&vsc->dev, vdev); > if (ret < 0) { > - error_report("Error get inflight: %d", -ret); > + error_report("Error setting inflight format: %d", -ret); > goto err_guest_notifiers; > } > > - ret = vhost_dev_set_inflight(&vsc->dev, vsc->inflight); > - if (ret < 0) { > - error_report("Error set inflight: %d", -ret); > - goto err_guest_notifiers; > + if (vsc->inflight) { > + if (!vsc->inflight->addr) { > + ret = vhost_dev_get_inflight(&vsc->dev, > + vs->conf.virtqueue_size, > + vsc->inflight); > + if (ret < 0) { > + error_report("Error getting inflight: %d", -ret); > + goto err_guest_notifiers; > + } > + } > + > + ret = vhost_dev_set_inflight(&vsc->dev, vsc->inflight); > + if (ret < 0) { > + error_report("Error setting inflight: %d", -ret); > + goto err_guest_notifiers; > + } > } > > ret = vhost_dev_start(&vsc->dev, vdev, true); > @@ -85,9 +93,6 @@ int vhost_scsi_common_start(VHostSCSICommon *vsc) > return ret; > > err_guest_notifiers: > - g_free(vsc->inflight); > - vsc->inflight = NULL; > - > k->set_guest_notifiers(qbus->parent, vsc->dev.nvqs, false); > err_host_notifiers: > vhost_dev_disable_notifiers(&vsc->dev, vdev); > @@ -111,12 +116,6 @@ void vhost_scsi_common_stop(VHostSCSICommon *vsc) > } > assert(ret >= 0); > > - if (vsc->inflight) { > - vhost_dev_free_inflight(vsc->inflight); > - g_free(vsc->inflight); > - vsc->inflight = NULL; > - } > - > vhost_dev_disable_notifiers(&vsc->dev, vdev); > } > > -- > 2.41.0 >