Re: [Qemu-devel] [PATCH v2 06/16] hw/display/xlnx_dp: Move problematic code from instance_init to realize

[Thomas Huth]

On 13.07.2018 13:13, Paolo Bonzini wrote:
> On 13/07/2018 10:27, Thomas Huth wrote:
>> aux_create_slave() calls qdev_init_nofail() which in turn "realizes"
>> the corresponding object. Thus this most not be called from an
>> instance_init function. Move the code to the realize function instead.
>>
>> Signed-off-by: Thomas Huth <address@hidden>
>> ---
>>  hw/display/xlnx_dp.c | 23 +++++++++--------------
>>  1 file changed, 9 insertions(+), 14 deletions(-)
> 
>> +    s->aux_bus = aux_init_bus(dev, "aux");
> 
> aux_init_bus can remain in the same place, and likewise the qdev_create
> that assigns to s->edid.
> 
> The only thing that has to move is the qdev_init_nofail and
> aux_bus_map_device, like this:
> 
> ----------------- 8< ------------------
> From: Paolo Bonzini <address@hidden>
> Subject: [PATCH] hw/display/xlnx_dp: Move problematic code from instance_init 
> to realize

Your patch looks good at a first quick glance, but it seems not to work as 
expected: When I now run QEMU like this:

echo "{'execute':'qmp_capabilities'}" \
 "{'execute':'device-list-properties'," \
 "'arguments':{'typename':'xlnx,zynqmp'}}" \
 "{'execute': 'human-monitor-command', " \
 "'arguments': {'command-line': 'info qtree'}}" | \
 aarch64-softmmu/qemu-system-aarch64 -M none,accel=qtest -qmp stdio

then QEMU ends up in an endless loop and I've got to kill it.

 Thomas