Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue notify

[Stefan Hajnoczi]

On Tue, Jan 25, 2011 at 9:49 AM, Stefan Hajnoczi <address@hidden> wrote:
> If any other vcpu interruption makes virtio-ioeventfd chug along then
> why are you seeing 100% CPU livelock?  My theory is that dynticks has
> a race condition which causes timers to stop working in QEMU.

I forgot to mention that you can test this theory by building without
I/O thread and running with -clock hpet.

If the guest no longer hangs, then this suggests you're seeing the
dynticks race condition.

Stefan