Of the 3 virtqueues, seabios only sets cmd, leaving ctrl and event without a physical address. This can cause vhost_verify_ring_part_mapping to return ENOMEM, causing the following logs:
qemu-system-x86_64: Unable to map available ring for ring 0 qemu-system-x86_64: Verify ring failure on region 0 The qemu commit e6cc11d64fc998c11a4dfcde8fda3fc33a74d844 has already resolved the issue for vhost scsi devices but the fix was never applied to vhost-user scsi devices. Signed-off-by: Raphael Norwitz <raphael.norw...@nutanix.com> --- hw/scsi/vhost-user-scsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/scsi/vhost-user-scsi.c b/hw/scsi/vhost-user-scsi.c index a9fd8ea..e4aae95 100644 --- a/hw/scsi/vhost-user-scsi.c +++ b/hw/scsi/vhost-user-scsi.c @@ -91,7 +91,7 @@ static void vhost_user_scsi_realize(DeviceState *dev, Error **errp) } vsc->dev.nvqs = 2 + vs->conf.num_queues; - vsc->dev.vqs = g_new(struct vhost_virtqueue, vsc->dev.nvqs); + vsc->dev.vqs = g_new0(struct vhost_virtqueue, vsc->dev.nvqs); vsc->dev.vq_index = 0; vsc->dev.backend_features = 0; vqs = vsc->dev.vqs; -- 1.9.4