diff --git a/test_plans/vm2vm_virtio_pmd_test_plan.rst b/test_plans/vm2vm_virtio_pmd_test_plan.rst
index db410e48..20314d41 100644
--- a/test_plans/vm2vm_virtio_pmd_test_plan.rst
+++ b/test_plans/vm2vm_virtio_pmd_test_plan.rst
@@ -593,4 +593,232 @@ Test Case 8: VM2VM vhost-user/virtio1.1-pmd with normal path
     xxxxx
     Throughput (since last show)
     RX-pps:            xxx
-    TX-pps:            xxx
+    TX-pps:            xxx
+
+Test Case 9: VM2VM virtio-pmd split ring mergeable path 8 queues CBDMA enable with server mode stable test
+==========================================================================================================
+
+1. Bind 16 cbdma channels to igb_uio driver, then launch the testpmd with 2 vhost port and 8 queues by below commands::
+
+    ./dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost --vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0@00:04.0;txq1@00:04.1;txq2@00:04.2;txq3@00:04.3;txq4@00:04.4;txq5@00:04.5;txq6@00:04.6;txq7@00:04.7],dmathr=512' \
+    --vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,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],dmathr=512'  -- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=8
+    testpmd>vhost enable tx all
+    testpmd>start
+
+2. Launch VM1 and VM2 using qemu5.2.0::
+
+    taskset -c 6-16 /home/qemu-install/qemu-5.2/bin/qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 9 -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/ubuntu20-04.img  \
+    -chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+    -device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+    -monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+    -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
+    -chardev socket,id=char0,path=./vhost-net0,server \
+    -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+    -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on -vnc :10
+
+   taskset -c 17-27 /home/qemu-install/qemu-5.2/bin/qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 9 -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/ubuntu20-04-2.img  \
+    -chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+    -device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+    -monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+    -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
+    -chardev socket,id=char0,path=./vhost-net1,server \
+    -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+    -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=on,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on -vnc :12
+
+3. On VM1 and VM2, bind virtio device with vfio-pci driver::
+
+     modprobe vfio
+     modprobe vfio-pci
+     echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
+     ./usertools/dpdk-devbind.py --force --bind=vfio-pci 0000:00:05.0
+
+4. Launch testpmd in VM1::
+
+    ./dpdk-testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024 --max-pkt-len=9600
+    testpmd>set mac fwd
+    testpmd>start
+
+5. Launch testpmd in VM2, sent imix pkts from VM2::
+
+    ./testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024 --max-pkt-len=9600
+    testpmd>set mac fwd
+    testpmd>set txpkts 64,256,512,1024,2000,64,256,512,1024,2000
+    testpmd>start tx_first 1
+
+6. Check imix packets can looped between two VMs for 1 mins and 8 queues all have packets rx/tx::
+
+   testpmd>show port stats all
+   testpmd>stop
+
+7. Relaunch and start vhost side testpmd with below cmd, change cbdma threshold for one vhost port's cbdma channels::
+
+  ./dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost --vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0@00:04.0;txq1@00:04.1;txq2@00:04.2;txq3@00:04.3;txq4@00:04.4;txq5@00:04.5;txq6@00:04.6;txq7@00:04.7],dmathr=512' \
+   --vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,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],dmathr=64'  -- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=8
+   testpmd>start
+
+8. Send pkts by testpmd in VM2, check imix packets can looped between two VMs for 1 mins and 8 queues all have packets rx/tx::
+
+   testpmd>stop
+   testpmd>start tx_first 1
+   testpmd>show port stats all
+   testpmd>stop
+
+9. Rerun step 7-8 for 10 times.
+
+Test Case 10: VM2VM virtio-pmd split ring mergeable path dynamic queue size CBDMA enable with server mode test
+==============================================================================================================
+
+1. Bind 16 cbdma channels to igb_uio driver, then launch the testpmd with 2 vhost ports below commands::
+
+    ./dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost --vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0@00:04.0;txq1@00:04.1;txq2@00:04.2;txq3@00:04.3;txq4@00:04.4;txq5@00:04.5;txq6@00:04.6;txq7@00:04.7],dmathr=512' \
+    --vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,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],dmathr=512'  -- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=4 --txq=4
+    testpmd>vhost enable tx all
+    testpmd>start
+
+2. Launch VM1 and VM2 using qemu5.2.0::
+
+    taskset -c 6-16 /home/qemu-install/qemu-5.2/bin/qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 9 -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/ubuntu20-04.img  \
+    -chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+    -device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+    -monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+    -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
+    -chardev socket,id=char0,path=./vhost-net0,server \
+    -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+    -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on -vnc :10
+
+   taskset -c 17-27 /home/qemu-install/qemu-5.2/bin/qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 9 -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/ubuntu20-04-2.img  \
+    -chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+    -device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+    -monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+    -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
+    -chardev socket,id=char0,path=./vhost-net1,server \
+    -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+    -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=on,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on -vnc :12
+
+3. On VM1 and VM2, bind virtio device with vfio-pci driver::
+
+     modprobe vfio
+     modprobe vfio-pci
+     echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
+     ./usertools/dpdk-devbind.py --force --bind=vfio-pci 0000:00:05.0
+
+4. Launch testpmd in VM1::
+
+    ./testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024 --max-pkt-len=9600
+    testpmd>set mac fwd
+    testpmd>start
+
+5. Launch testpmd in VM2 and send imix pkts, check imix packets can looped between two VMs for 1 mins and 4 queues (queue0 to queue3) have packets rx/tx::
+
+    ./testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024 --max-pkt-len=9600
+    testpmd>set mac fwd
+    testpmd>set txpkts 64,256,512,1024,2000,64,256,512,1024,2000
+    testpmd>start tx_first 32
+    testpmd>show port stats all
+    testpmd>stop
+
+6. Relaunch and start vhost side testpmd with eight queues, change cbdma threshold for one vhost port's cbdma channels::
+
+  ./dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost --vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0@00:04.0;txq1@00:04.1;txq2@00:04.2;txq3@00:04.3;txq4@00:04.4;txq5@00:04.5;txq6@00:04.6;txq7@00:04.7],dmathr=512' \
+   --vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,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],dmathr=64'  -- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=8
+   testpmd>start
+
+7. Send pkts by testpmd in VM2, check imix packets can looped between two VMs for 1 mins and 8 queues all have packets rx/tx::
+
+   testpmd>stop
+   testpmd>start tx_first 32
+   testpmd>show port stats all
+   testpmd>stop
+
+8. Rerun step 6-7 for 10 times.
+
+Test Case 11: VM2VM virtio-pmd packed ring mergeable path 8 queues CBDMA enable test
+=====================================================================================
+
+1. Bind 16 cbdma channels to igb_uio driver, then launch the testpmd with 2 vhost port and 8 queues by below commands::
+
+    rm -rf vhost-net*
+    ./dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost --vdev 'net_vhost0,iface=vhost-net0,queues=8,dmas=[txq0@00:04.0;txq1@00:04.1;txq2@00:04.2;txq3@00:04.3;txq4@00:04.4;txq5@00:04.5;txq6@00:04.6;txq7@00:04.7],dmathr=512' \
+    --vdev 'net_vhost1,iface=vhost-net1,queues=8,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],dmathr=512'  -- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=8
+    testpmd>vhost enable tx all
+    testpmd>start
+
+2. Launch VM1 and VM2 with qemu 5.2.0::
+
+    taskset -c 6-16 qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 9 -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/ubuntu20-04.img  \
+    -chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+    -device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+    -monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+    -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
+    -chardev socket,id=char0,path=./vhost-net0 \
+    -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+    -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on,packed=on -vnc :10
+
+   taskset -c 17-27 qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 9 -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/ubuntu20-04-2.img  \
+    -chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+    -device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+    -monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+    -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
+    -chardev socket,id=char0,path=./vhost-net1 \
+    -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+    -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=on,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on,packed=on -vnc :12
+
+3. On VM1 and VM2, bind virtio device with vfio-pci driver::
+
+     modprobe vfio
+     modprobe vfio-pci
+     echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
+     ./usertools/dpdk-devbind.py --force --bind=vfio-pci 0000:00:05.0
+
+4. Launch testpmd in VM1::
+
+    ./testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024 --max-pkt-len=9600
+    testpmd>set mac fwd
+    testpmd>start
+
+5. Launch testpmd in VM2 and send imix pkts, check imix packets can looped between two VMs for 1 mins and 8 queues all have packets rx/tx::
+
+    ./testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024 --max-pkt-len=9600
+    testpmd>set mac fwd
+    testpmd>set txpkts 64,256,512,1024,20000,64,256,512,1024,20000
+    testpmd>start tx_first 32
+    testpmd>show port stats all
+    testpmd>stop
+
+6. Quit VM2 and relaunch VM2 with split ring::
+
+    taskset -c 6-16 qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 9 -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/ubuntu20-04.img  \
+    -chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+    -device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+    -monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+    -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
+    -chardev socket,id=char0,path=./vhost-net0 \
+    -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+    -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on -vnc :10
+
+7. Bind virtio device with vfio-pci driver, launch testpmd in VM2 and send imix pkts, check imix packets can looped between two VMs for 1 mins and 8 queues all have packets rx/tx::
+
+   modprobe vfio
+   modprobe vfio-pci
+   echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
+   ./usertools/dpdk-devbind.py --force --bind=vfio-pci 0000:00:05.0
+   ./testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024 --max-pkt-len=9600
+   testpmd>set mac fwd
+   testpmd>set txpkts 64,256,512,1024,20000,64,256,512,1024,20000
+   testpmd>start tx_first 32
+   testpmd>show port stats all
+   testpmd>stop
