Comment 12 for bug 1021649

The patch at http://permalink.gmane.org/gmane.comp.emulators.qemu/162828 fixes it for ioeventfd=on (the bug is that the ioeventfd is not added to the select() arguments), but I and Avi disagreed on whether ioeventfd=off works. :)

Jamie/Richard/Georg, can you test your respective reproducers without any patch but with -global virtio-blk-pci.ioeventfd=off?