Comment 5 for bug 1071011

I'm getting a failure message when starting using virsh start (/usr/bin/kvm is altered to point to upstream as described)
# virsh start Win7one
error: Failed to start domain Win7one
error: internal error Child process (LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin /usr/bin/kvm -help) status unexpected: exit status 1

I had problems on the network tap device when startting via
./qemu-system-x86_64 --enable-kvm -name Win7one -S -M pc-0.12 -enable-kvm -m 2048 -smp 2...

# ./testqemuup
char device redirected to /dev/pts/3
qemu-system-x86_64: -netdev tap,fd=36,id=hostnet0,vhost=on,vhostfd=37: TUNGETIFF ioctl() failed: Bad file descriptor
TUNSETOFFLOAD ioctl() failed: Bad file descriptor
qemu-system-x86_64: -netdev tap,fd=36,id=hostnet0,vhost=on,vhostfd=37: vhost-net requested but could not be initialized
qemu-system-x86_64: -netdev tap,fd=36,id=hostnet0,vhost=on,vhostfd=37: Device 'tap' could not be initialized

Did remove the tap device definition and it's usage as a pci device. After that I got a core dump message, but probably coresize is set to zero.
See the attached file for details of qemu-system-x86_64

ldd on the file looks okay.