Re: [RFC PATCH 0/4] async: fix hangs on weakly-ordered architectures

[Paolo Bonzini]

On 08/04/20 11:12, Ying Fang wrote:
> On 2020/4/7 22:07, Paolo Bonzini wrote:
>> ARM machines and other weakly-ordered architectures have been suffering
>> for a long time from hangs in qemu-img and qemu-io.  For QEMU binaries
>> these are mitigated by the timers that sooner or later fire in the main
>> loop, but these will not happen for the tools and probably not with I/O
>> threads either.
>
> yes, we occasionally see qemu main thread hangs and VM stuck in in-shutdown
> state on aarch64 platform. So this could happen with I/O threads.

Thanks for confirming!  Have you managed to test the final version of
the patches?  It would be great to include test results.

Paolo