Comment 20 for bug 1580459

Remember, I think we've done enough testing to know that it isn't specifically the VM shutting down that causes this, but the binding or unbinding of PCI devices in sysfs, which is something a VM will do on shutdown if you're passing hardware into it. It *is* caused by the VM running for more than an hour, but it is *not* technically caused by the shutdown itself. I titled it as a shutdown issue because that's pretty much the only situation anybody's going to notice this problem, and we need to be Google-friendly.