Hi, On Thu, 2013-05-16 at 09:27 +0300, Michael S. Tsirkin wrote: > On Thu, May 16, 2013 at 09:24:05AM +0300, Michael S. Tsirkin wrote: > > Is this with or without vhost-net in host? > > never mind, I see it's without. > Try to enable vhost-net (you'll have to switch to -netdev syntax > for that to work) and see if this help. > If it does it's likely a qemu bug if not probably a guest bug.
Switching to -netdev is non-trivial for me, unfortunately. Anyway, it's definitely a qemu bug - it happens on kernels 3.2 and 3.9 with 1.4.1, but doesn't happen with qemu 0.15.0 or 1.5.0rc1. I'll have a dig through git to see if I can identify the patch that resolves it. It feels-like qemu sometimes stops reading from the tap file descriptor between ipxe exiting and the linux kernel bringing up the network interface, and never recovers from that. /Nick
