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Re: [qemu-s390x] hw/s390x/ipl: Dubious use of qdev_reset_all_fn

From: Christian Borntraeger
Subject: Re: [qemu-s390x] hw/s390x/ipl: Dubious use of qdev_reset_all_fn
Date: Fri, 24 May 2019 20:28:19 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1

On 24.05.19 20:04, David Hildenbrand wrote:
> On 24.05.19 19:54, Philippe Mathieu-Daudé wrote:
>> Hi Christian,
>> I'm having hard time to understand why the S390_IPL object calls
>> qemu_register_reset(qdev_reset_all_fn) in its realize() method, while
>> being QOM'ified (it has a reset method).
>> It doesn't seem to have a qdev children added explicitly to it.
>> I see it is used as a singleton, what else am I missing?
>> Thanks,
>> Phil.
> Looks like I added it back then (~4 years ago) when converting it into a
> I could imagine that - back then - this was needed because only
> TYPE_SYS_BUS_DEVICE would recursively get reset.

Yes, back then singleton devices were not recursively resetted. Has that 
> Did you try removing it, to see if anything breaks?

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