[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH] hw/virtio-scsi: Set max_target=0 during vhost-scsi
From: |
Nicholas A. Bellinger |
Subject: |
[Qemu-devel] [PATCH] hw/virtio-scsi: Set max_target=0 during vhost-scsi operation |
Date: |
Wed, 11 Jul 2012 20:55:28 +0000 |
From: Nicholas Bellinger <address@hidden>
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 <address@hidden>
Cc: Zhi Yong Wu <address@hidden>
Cc: Paolo Bonzini <address@hidden>
Signed-off-by: Nicholas Bellinger <address@hidden>
---
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
- [Qemu-devel] [PATCH] hw/virtio-scsi: Set max_target=0 during vhost-scsi operation,
Nicholas A. Bellinger <=