Am 16.05.2013 10:40, schrieb Michael S. Tsirkin: > On Thu, May 16, 2013 at 09:20:55AM +0100, Nicholas Thomas wrote: >> 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. > > Interesting. Why is that? > >> 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 > > You can try to bisect, yes. >
It would be good to bisect this. I would appreciate it. I have a similar problem with rtl8139 (without vhost-net), but I was unable to reproduce yet. Thanks, Peter
