Hi, all: I'm very interested in virtio-mmio Peter Maydell did for QEMU, (http://lists.nongnu.org/archive/html/qemu-devel/2011-11/msg01870.html)
actually, I've tested the virtio-blk, and it is working. I applied those patch to QEMU-1.0 and brought the virtio_mmio.c from Linux-3.2-rc back to Linux-linaro-2.6.38. I also found a small bug in virito-mmio.c: virtio_mmio_write(), Peter forgot to break in each case of switch block. After fixed the small bug, the virtio-balloon works as well. Then, when I attempted to enable the virtio-net, the initialization part is fine, however, the QEMU crashed and printed this message: "virtio-net header not in first element" It happens when the front-end virtio-net is invoking virtqueue_kick() at the end of try_fill_recv(). Then, QEMU gets this message and invokes virtio_net_receive(), then the error happens. The parameters I passed to qemu-system-arm is qemu-system-arm XXXXXXX -netdev type=tap,id=mynet -global virtio-net-mmio.netdev=mynet I don't know this is correct or not. Does anyone have any idea of this problem? Or give me some directions to solve this bug? Any comment is welcome. I really appreciate your help!! ---- Best Regards, Ying-Shiuan Pan