diff --git a/test_plans/virtio_event_idx_interrupt_test_plan.rst b/test_plans/virtio_event_idx_interrupt_test_plan.rst
index df05529..eb26a13 100644
--- a/test_plans/virtio_event_idx_interrupt_test_plan.rst
+++ b/test_plans/virtio_event_idx_interrupt_test_plan.rst
@@ -258,99 +258,76 @@ Test Case 6: Wake up packed ring virtio-net cores with event idx interrupt mode
     testpmd>start
     testpmd>stop
 
-Test Case 7: wake up vhost-user core with event idx interrupt mode and cbdma enabled
-====================================================================================
-
-1. Launch l3fwd-power example app with client mode::
-
-    ./examples/l3fwd-power/build/l3fwd-power -l 1 -w 80:04.0 \
-    -n 4 \
-    --log-level=9 \
-    --vdev 'eth_vhost0,iface=/vhost-net0,queues=1,client=1,dmas=[txq0@80:04.0],dmathr=1024' \
-    -- -p 0x1 \
-    --parse-ptype 1 \
-    --config "(0,0,1)"
-
-2. Launch VM1 with server mode::
-
-     taskset -c 33 \
-     /home/qemu-install/qemu-3.0/bin/qemu-system-x86_64 -name us-vhost-vm1 \
-     -cpu host -enable-kvm -smp cores=1,sockets=1 -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu1910.img -netdev user,id=yinan,hostfwd=tcp:127.0.0.1:6006-:22 -device e1000,netdev=yinan \
-     -chardev socket,server,id=char0,path=/vhost-net0 \
-     -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \
-     -device virtio-net-pci,mac=52:54:00:00:00:01,netdev=mynet1,csum=on -vnc :10 -daemonize
-
-3. Relauch l3fwd-power sample for port up::
-
-    ./examples/l3fwd-power/build/l3fwd-power -l 1 -w 80:04.0 \
-    -n 4 \
-    --log-level=9 \
-    --vdev 'eth_vhost0,iface=/vhost-net0,queues=1,client=1,dmas=[txq0@80:04.0],dmathr=1024' \
-    -- -p 0x1 \
-    --parse-ptype 1 \
-    --config "(0,0,1)"
-
-3.  On VM, set ip for virtio device and send packets to vhost::
-
-      ifconfig [ens3] 1.1.1.2     # [ens3] is the name of virtio-net
-      ping 1.1.1.3
-
-4. Check vhost related core is waked up by reading l3fwd-power log.
-
-Test Case 8: wake up vhost-user cores with event idx interrupt mode and cbdma enabled 16 queues test 
-====================================================================================================
-
-1. Launch l3fwd-power example app with client mode::
-
-    ./examples/l3fwd-power/build/l3fwd-power -l 1-16 \
-    -n 4 \
-    --log-level=9 \
-    --vdev 'eth_vhost0,iface=/vhost-net0,queues=16,client=1,dmas=[txq0@80:04.0;txq1@80:04.1;txq2@80:04.2;txq3@80:04.3;txq4@80:04.4;txq5@80:04.5;txq6@80:04.6;txq7@80:04.7;txq8@00:04.0;txq9@00:04.1;txq10@00:04.2;txq11@00:04.3;txq12@00:04.4;txq13@00:04.5;txq14@00:04.6;txq15@00:04.7],dmathr=1024' \
-    -- -p 0x1 \
-    --parse-ptype 1 \
-    --config "(0,0,1),(0,1,2),(0,2,3),(0,3,4),(0,4,5),(0,5,6),(0,6,7),(0,7,8),(0,8,9),(0,9,10),(0,10,11),(0,11,12),(0,12,13),(0,13,14),(0,14,15),(0,15,16)"
-
-2. Launch VM1 with server mode::
-
-    taskset -c 17-18 /home/qemu-install/qemu-3.0/bin/qemu-system-x86_64 -name us-vhost-vm1      -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc -netdev user,id=yinan,hostfwd=tcp:127.0.0.1:6001-:22 -device e1000,netdev=yinan      -smp cores=16,sockets=1 -drive file=/home/osimg/ubuntu1910.img       -chardev socket,server,id=char0,path=/vhost-net0      -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce,queues=16      -device virtio-net-pci,mac=52:54:00:00:00:01,netdev=mynet1,csum=on,mq=on,vectors=40 -vnc :10 -daemonize
-
-3. Relauch l3fwd-power sample for port up::
-
-    ./examples/l3fwd-power/build/l3fwd-power -l 1-16 \
-    -n 4 \
-    --log-level=9 \
-    --vdev 'eth_vhost0,iface=/vhost-net0,queues=16,client=1,dmas=[txq0@80:04.0;txq1@80:04.1;txq2@80:04.2;txq3@80:04.3;txq4@80:04.4;txq5@80:04.5;txq6@80:04.6;txq7@80:04.7;txq8@00:04.0;txq9@00:04.1;txq10@00:04.2;txq11@00:04.3;txq12@00:04.4;txq13@00:04.5;txq14@00:04.6;txq15@00:04.7],dmathr=1024' \
-    -- -p 0x1 \
-    --parse-ptype 1 --interrupt-only \
-    --config "(0,0,1),(0,1,2),(0,2,3),(0,3,4),(0,4,5),(0,5,6),(0,6,7),(0,7,8),(0,8,9),(0,9,10),(0,10,11),(0,11,12),(0,12,13),(0,13,14),(0,14,15),(0,15,16)"
-
-3.  Set vitio-net with 16 quques and give vitio-net ip address::
-
-      ethtool -L ens4 combined 16    # [ens3] is the name of virtio-net
-      ifconfig ens4 1.1.1.1
-
-4.  Send packets with different IPs from virtio-net, notice to bind each vcpu to different send packets process::
-
-      taskset -c 0 ping 1.1.1.2
-      taskset -c 1 ping 1.1.1.3
-      taskset -c 2 ping 1.1.1.4
-      taskset -c 3 ping 1.1.1.5
-      taskset -c 4 ping 1.1.1.6
-      taskset -c 5 ping 1.1.1.7
-      taskset -c 6 ping 1.1.1.8
-      taskset -c 7 ping 1.1.1.9
-      taskset -c 8 ping 1.1.1.2
-      taskset -c 9 ping 1.1.1.2
-      taskset -c 10 ping 1.1.1.2
-      taskset -c 11 ping 1.1.1.2
-      taskset -c 12 ping 1.1.1.2
-      taskset -c 13 ping 1.1.1.2
-      taskset -c 14 ping 1.1.1.2
-      taskset -c 15 ping 1.1.1.2
-
-5.  Check vhost related cores are waked up with l3fwd-power log, such as following::
-
-      L3FWD_POWER: lcore 0 is waked up from rx interrupt on port 0 queue 0
-      .....
-      .....
-      L3FWD_POWER: lcore 15 is waked up from rx interrupt on port 0 queue 15
+Test Case 7: Split ring virtio-pci driver reload test with CBDMA enabled
+========================================================================
+
+1. Bind one nic port and one cbdma port to igb_uio, then launch the vhost sample by below commands::
+
+    rm -rf vhost-net*
+    ./testpmd -c 0xF0000000 -n 4 --file-prefix=vhost --vdev 'net_vhost,iface=vhost-net,queues=1,dmas=[txq0@00:04.0]' -- -i --nb-cores=1 --txd=1024 --rxd=1024
+    testpmd>start
+
+2. Launch VM::
+
+    taskset -c 32-33 \
+    qemu-system-x86_64 -name us-vhost-vm1 \
+     -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
+     -smp cores=2,sockets=1 -drive file=/home/osimg/ubuntu2004_2.img  \
+     -monitor unix:/tmp/vm2_monitor.sock,server,nowait -net nic,macaddr=00:00:00:08:e8:aa,addr=1f -net user,hostfwd=tcp:127.0.0.1:6004-:22 \
+     -chardev socket,id=char0,path=./vhost-net -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \
+     -device virtio-net-pci,mac=52:54:00:00:00:01,netdev=mynet1,mrg_rxbuf=on,csum=on,gso=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on \
+     -vnc :12 -daemonize
+
+3. On VM1, set virtio device IP, send 10M packets from packet generator to nic then check virtio device can receive packets::
+
+    ifconfig [ens3] 1.1.1.2      # [ens3] is the name of virtio-net
+    tcpdump -i [ens3]
+
+4. Reload virtio-net driver by below cmds::
+
+    ifconfig [ens3] down
+    ./dpdk-devbind.py -u [00:03.0]   # [00:03.0] is the pci addr of virtio-net
+    ./dpdk-devbind.py -b virtio-pci [00:03.0]
+
+5. Check virtio device can receive packets again::
+
+    ifconfig [ens3] 1.1.1.2
+    tcpdump -i [ens3]
+
+6. Rerun step4 and step5 100 times to check event idx workable after driver reload.
+
+Test Case 8: Wake up split ring virtio-net cores with event idx interrupt mode and cbdma enabled 16 queues test
+================================================================================================================
+
+1. Bind one nic port to igb_uio, then launch the vhost sample by below commands::
+
+    rm -rf vhost-net*
+    ./testpmd -l 1-17 -n 4 --file-prefix=vhost --vdev 'net_vhost,iface=vhost-net,queues=16,client=1,dmas=[txq0@80:04.0;txq1@80:04.1;txq2@80:04.2;txq3@80:04.3;txq4@80:04.4;txq5@80:04.5;txq6@80:04.6;txq7@80:04.7;txq8@00:04.0;txq9@00:04.1;txq10@00:04.2;txq11@00:04.3;txq12@00:04.4;txq13@00:04.5;txq14@00:04.6;txq15@00:04.7],dmathr=64' -- -i --nb-cores=16 --txd=1024 --rxd=1024 --rxq=16 --txq=16
+    testpmd>start
+
+2. Launch VM::
+
+    taskset -c 32-33 \
+    qemu-system-x86_64 -name us-vhost-vm1 \
+     -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
+     -smp cores=16,sockets=1 -drive file=/home/osimg/ubuntu2004_2.img  \
+     -monitor unix:/tmp/vm2_monitor.sock,server,nowait -net nic,macaddr=00:00:00:08:e8:aa,addr=1f -net user,hostfwd=tcp:127.0.0.1:6004-:22 \
+     -chardev socket,id=char0,path=./vhost-net,server -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce,queues=16 \
+     -device virtio-net-pci,mac=52:54:00:00:00:01,netdev=mynet1,mrg_rxbuf=on,mq=on,vectors=40,csum=on,gso=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on \
+     -vnc :12 -daemonize
+
+3. On VM1, give virtio device ip addr and enable vitio-net with 16 quques::
+
+    ifconfig [ens3] 1.1.1.2           # [ens3] is the name of virtio-net
+    ethtool -L [ens3] combined 16
+
+4. Send 10M different ip addr packets from packet generator to nic, check virtio-net interrupt times by below cmd in VM::
+
+    cat /proc/interrupts
+
+5. After two hours stress test, stop and restart testpmd, check each queue has new packets coming::
+
+    testpmd>stop
+    testpmd>start
+    testpmd>stop
+
