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

[Ying Fang]

On 2020/4/8 23:05, Paolo Bonzini wrote:
> 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.

Yes, I did the test with your latest patches on both aarch64 and
x86 platform.Test results show that the hang has been fixed. Thanks.

> Paolo