Hello Michael, Jason and all,
I am currently using latest mainline QEMU on x86_64 to run a QNX 7 guest.
QNX 7 is not free software anymore unfortunately, with the
the last open source versions in the 6.x range.
I am using the official virtio-net guest driver from QNX 7.
During initialization I sporadically get this error message:
$ qemu-system-x86_64 -machine pc,accel=kvm,kernel_irqchip=on -smp 2 -m 2048
-display none -nodefconfig -nodefaults -chardev stdio,mux=on,id=char0 -serial
chardev:char0 -monitor none -mon chardev=char0,mode=readline -netdev
user,id=user0,hostfwd=udp::9004-:9004 -device virtio-net,netdev=user0 qnx.img
virtio-net ctrl missing headers
and following that my host->guest UDP port forwarding does not work, that is,
the qemu process shows up as listening on the interface, but no packets appear
in the guest.
This error during initialization does not appear every time I launch QEMU.
It appears to be more or less random.
Whenever the error does not appear, the interface works as expected, and port
forwarding works.
Latest commit is
19b599f7664b ("Merge remote-tracking branch
'remotes/armbru/tags/pull-error-2018-08-27-v2'")
Thanks a lot for any advice!
Ciao,
Claudio