[dpdk-dev] [PATCH v3 02/12] net/virtio: setup and start cq in configure callback

[Olivier Matz]

Hi Lei,

On 11/02/2016 02:38 AM, Yao, Lei A wrote:
> Hi, Olivier
> 
> During the validation work with v16.11-rc2, I find that this patch will cause VM crash if enable virtio bonding in VM. Could you have a check at your side? The following is steps at my side. Thanks a lot
> 
> 1. bind PF port to igb_uio.
> modprobe uio
> insmod ./x86_64-native-linuxapp-gcc/kmod/igb_uio.ko
> ./tools/dpdk-devbind.py --bind=igb_uio 84:00.1
> 
> 2. start vhost switch.
> ./examples/vhost/build/vhost-switch -c 0x1c0000 -n 4 --socket-mem 4096,4096 - -p 0x1 --mergeable 0 --vm2vm 0 --socket-file ./vhost-net
> 
> 3. bootup one vm with four virtio net device
> qemu-system-x86_64 \
> -name vm0 -enable-kvm -chardev socket,path=/tmp/vm0_qga0.sock,server,nowait,id=vm0_qga0 \
> -device virtio-serial -device virtserialport,chardev=vm0_qga0,name=org.qemu.guest_agent.0 \
> -daemonize -monitor unix:/tmp/vm0_monitor.sock,server,nowait \
> -net nic,vlan=0,macaddr=00:00:00:c7:56:64,addr=1f \
> net user,vlan=0,hostfwd=tcp:10.239.129.127:6107:22 \
> -chardev socket,id=char0,path=./vhost-net \
> -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
> -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01 \
> -chardev socket,id=char1,path=./vhost-net \
> -netdev type=vhost-user,id=netdev1,chardev=char1,vhostforce \
> -device virtio-net-pci,netdev=netdev1,mac=52:54:00:00:00:02 \
> -chardev socket,id=char2,path=./vhost-net \
> -netdev type=vhost-user,id=netdev2,chardev=char2,vhostforce \
> -device virtio-net-pci,netdev=netdev2,mac=52:54:00:00:00:03 \
> -chardev socket,id=char3,path=./vhost-net \
> -netdev type=vhost-user,id=netdev3,chardev=char3,vhostforce \
> -device virtio-net-pci,netdev=netdev3,mac=52:54:00:00:00:04 \
> -cpu host -smp 8 -m 4096 \
> -object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
> -numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu16.img -vnc :10
> 
> 4. on vm:
> bind virtio net device to igb_uio
> modprobe uio
> insmod ./x86_64-native-linuxapp-gcc/kmod/igb_uio.ko
> tools/dpdk-devbind.py --bind=igb_uio 00:04.0 00:05.0 00:06.0 00:07.0
> 5. startup test_pmd app
> ./x86_64-native-linuxapp-gcc/app/testpmd -c 0x1f -n 4 - -i --txqflags=0xf00 --disable-hw-vlan-filter
> 6. create one bonding device (port 4)
> create bonded device 0 0 (the first 0: mode, the second: the socket number)
> show bonding config 4
> 7. bind port 0, 1, 2 to port 4
> add bonding slave 0 4
> add bonding slave 1 4
> add bonding slave 2 4
> port start 4
> Result: just after port start 4(port 4 is bonded port), the vm shutdown immediately.

Sorry for the late answer. I reproduced the issue on rc2, and I confirm
that Yuanhan's patchset fixes it in rc3.

Regards,
Olivier