Re: [Qemu-devel] [PATCH] virtio-blk: Drop x-data-plane option

[Cornelia Huck <cornelia.huck@de.ibm.com>]

On Mon,  7 Dec 2015 18:59:27 +0800
Fam Zheng <famz@redhat.com> wrote:

> The official way of enabling dataplane is through the "iothread"
> property that references an iothread object created by "-object
> iothread".  Since the old "x-data-plane=on" way now even crashes, it's
> probably easier to just drop it:
> 
> $ qemu-system-x86_64 -drive file=null-co://,id=d0,if=none \
>     -device virtio-blk-pci,drive=d0,x-data-plane=on
> 
> ERROR:/home/fam/work/qemu/qom/object.c:1515:
> object_get_canonical_path_component: assertion failed: (obj->parent != NULL)
> Aborted

Do we understand yet why this crashes, btw?

> 
> Signed-off-by: Fam Zheng <famz@redhat.com>
> ---
>  hw/block/dataplane/virtio-blk.c | 15 ++-------------
>  hw/block/virtio-blk.c           |  1 -
>  include/hw/virtio/virtio-blk.h  |  1 -
>  3 files changed, 2 insertions(+), 15 deletions(-)
> 

No general objection to removing x-data-plane; but this probably wants
a mention on the changelog as x-data-plane has been described in
various howtos etc. over the years.