From: Nicholas Bellinger <n...@linux-iscsi.org> This QEMU patch sets VirtIOSCSIConfig->max_target=0 for vhost-scsi operation to restrict virtio-scsi LLD guest scanning to max_id=0 (a single target ID instance) when connected to individual tcm_vhost endpoints as requested by Paolo.
This ensures that virtio-scsi LLD only attempts to scan target IDs up to VIRTIO_SCSI_MAX_TARGET when connected via virtio-scsi-raw. It's currently cut against Zhi's qemu vhost-scsi tree here: https://github.com/wuzhy/qemu/tree/vhost-scsi Cc: Stefan Hajnoczi <stefa...@linux.vnet.ibm.com> Cc: Zhi Yong Wu <wu...@linux.vnet.ibm.com> Cc: Paolo Bonzini <pbonz...@redhat.com> Signed-off-by: Nicholas Bellinger <n...@linux-iscsi.org> --- hw/virtio-scsi.c | 6 +++++- 1 files changed, 5 insertions(+), 1 deletions(-) diff --git a/hw/virtio-scsi.c b/hw/virtio-scsi.c index e38cdd0..71276b6 100644 --- a/hw/virtio-scsi.c +++ b/hw/virtio-scsi.c @@ -523,7 +523,11 @@ static void virtio_scsi_get_config(VirtIODevice *vdev, stl_raw(&scsiconf->sense_size, s->sense_size); stl_raw(&scsiconf->cdb_size, s->cdb_size); stl_raw(&scsiconf->max_channel, VIRTIO_SCSI_MAX_CHANNEL); - stl_raw(&scsiconf->max_target, VIRTIO_SCSI_MAX_TARGET); + if (s->vhost_scsi) { + stl_raw(&scsiconf->max_target, 0); + } else { + stl_raw(&scsiconf->max_target, VIRTIO_SCSI_MAX_TARGET); + } stl_raw(&scsiconf->max_lun, VIRTIO_SCSI_MAX_LUN); } -- 1.7.2.5
