Re: [PATCH for-5.1 1/2] msf2: Unbreak device-list-properties for "msf-soc"

[Thomas Huth <thuth@redhat.com>]

On 16/07/2020 04.59, sundeep subbaraya wrote:
> On Wed, Jul 15, 2020 at 8:12 PM Markus Armbruster <armbru@redhat.com> wrote:
>>
>> Philippe Mathieu-Daudé <f4bug@amsat.org> writes:
>>
>>> On 7/15/20 4:04 PM, Markus Armbruster wrote:
>>>> Watch this:
>>>>
>>>>     $ qemu-system-aarch64 -M ast2600-evb -S -display none -qmp stdio
>>>>     {"QMP": {"version": {"qemu": {"micro": 50, "minor": 0, "major": 5}, "package": "v5.0.0-2464-g3a9163af4e"}, "capabilities": ["oob"]}}
>>>>     {"execute": "qmp_capabilities"}
>>>>     {"return": {}}
>>>>     {"execute": "device-list-properties", "arguments": {"typename": "msf2-soc"}}
>>>>     Unsupported NIC model: ftgmac100
>>>>     armbru@dusky:~/work/images$ echo $?
>>>>     1
>>>>
>>>> This is what breaks "make check SPEED=slow".
>>>>
>>>> Root cause is m2sxxx_soc_initfn()'s messing with nd_table[] via
>>>> qemu_check_nic_model().  That's wrong.
>>>>
>>>> We fixed the exact same bug for device "allwinner-a10" in commit
>>>> 8aabc5437b "hw/arm/allwinner-a10: Do not use nd_table in instance_init
>>>> function".  Fix this instance the same way: move the offending code to
>>>> m2sxxx_soc_realize(), where it's less wrong, and add a FIXME comment.
>>>
>>> That addresses this other thread, right?
>>> https://www.mail-archive.com/qemu-devel@nongnu.org/msg720658.html
>>
>> Correct!  I wasn't aware of it, thanks for making the connection.
>>
> 
> Thanks Markus for the fix.

It's rather just a work-around that avoids the crash than a real fix. I
think we can use it for the upcoming 5.1 release, but it would be great
if you could rework this code for 5.2, so that the nd_table handling is
moved to msf2-som.c instead.

 Thanks,
  Thomas