[Qemu-devel] QEMU hangs in main_loop_wait

[Frank Yang]

Hi all,

After quite some backports, such as

https://android.googlesource.com/platform/external/qemu/+/a8da859b1b011e509056f03cbcb73df27afe4337

we are not seeing hangs in flatview_do_translate, but are still getting
hangs in main-loop:

    qemu_mutex_unlock_iothread();
    replay_mutex_unlock();

    ret = qemu_poll_ns((GPollFD *)gpollfds->data, gpollfds->len, timeout);
<-------------this seems to be the hanging part

    replay_mutex_lock();
    qemu_mutex_lock_iothread();

Any idea how to diagnose the cause of taking too much time in g_poll in
qemu_poll_ns?

Frank