Re: [Qemu-devel] [PATCH] char: do not use atexit cleanup handler

[Paolo Bonzini]

On 04/07/2016 21:53, Gerd Hoffmann wrote:
>   Hi,
> 
>>>> What about graphics threads ? In particular I'd be thinking of spice
>>>> which uses threads and chardevs.
>>>
>>> I think it should be quiesced after pause_all_vcpus returns.  Marc-André
>>> should know, but it's better to check with Gerd.
>>
>> In theory, spice_server_vm_stop() should be called at this point,
> 
> Yes, that should handle the qxl worker thread.
> 
>> and all chardev in spice are stopped too there, as well as the qxl
>> worker processing thread (although the thread is not joined here
>> neither..).
> 
> The chardevs are handled in iothread context anyway, so I don't think
> they need any special care.

Writes to chardevs can be done from non-iothread threads, but SPICE
doesn't do that.

Paolo