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Re: [Qemu-devel] [PATCH] hw/arm/bcm283x: Fix crash with device_add bcm28

From: Markus Armbruster
Subject: Re: [Qemu-devel] [PATCH] hw/arm/bcm283x: Fix crash with device_add bcm2837 on unsupported machines
Date: Thu, 12 Jul 2018 18:16:40 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux)

Thomas Huth <address@hidden> writes:

> On 12.07.2018 14:06, Markus Armbruster wrote:
>> Peter Maydell <address@hidden> writes:
>>> On 11 July 2018 at 17:12, Eduardo Habkost <address@hidden> wrote:
>>>> On Wed, Jul 11, 2018 at 09:21:48AM +0200, Thomas Huth wrote:
>>>>> Hm, ok, so how to continue here now? Shall we at least mark the
>>>>> bcm2836/7 devices with user_creatable=false, so that users can not crash
>>>>> their QEMU so easily with device_add? The problem with introspection via
>>>>> device-list-properties would still continue to exist, but I think that's
>>>>> less likely used in practice... otherwise we could still move the
>>>>> qdev_set_parent_bus() calls to the realize() function instead, and just
>>>>> add a big fat FIXME comment in front of the code block, so that we
>>>>> remember to clean that up one day...
>>>> Crashing device-list-properties should be a blocker bug, IMO.
>> Seconded.
> Well, maybe I should then not suggest to add a hmp("info qtree") below
> the hmp("info qom-tree") in test_one_device() of
> tests/device-introspect-test.c ... otherwise we'll be quite busy in the
> next weeks...

If we can't fix these bugs in time, we can bring back
cannot_destroy_with_object_finalize_yet, as Eduardo mentioned upthread.
Would be sad, but sad beats crash.

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