diff --git a/test_plans/vm2vm_virtio_pmd_test_plan.rst b/test_plans/vm2vm_virtio_pmd_test_plan.rst
index 7280af93..7eeaa652 100644
--- a/test_plans/vm2vm_virtio_pmd_test_plan.rst
+++ b/test_plans/vm2vm_virtio_pmd_test_plan.rst
@@ -37,6 +37,7 @@ vm2vm vhost-user/virtio-pmd test plan
 This test plan includes vm2vm mergeable, normal and vector_rx path test with virtio 0.95 and virtio 1.0,
 also add mergeable and normal path test with virtio 1.1. Specially, three mergeable path cases check the
 payload of each packets are valid by using pdump.
+Note: Blow cases 9-11 which have cbdma usage should add dpdk local path to support async vhostpmd.
 
 Test flow
 =========
@@ -310,7 +311,7 @@ Test Case 5: VM2VM vhost-user/virtio-pmd mergeable path with payload valid check
 
 4. Bind virtio with igb_uio driver,then run testpmd, set rxonly mode for virtio-pmd on VM1::
 
-    ./dpdk-testpmd -c 0x3 -n 4 --file-prefix=test -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600
+    ./dpdk-testpmd -c 0x3 -n 4 --file-prefix=test -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600 --rx-offloads=0x00002000
     testpmd>set fwd rxonly
     testpmd>start
 
@@ -320,7 +321,7 @@ Test Case 5: VM2VM vhost-user/virtio-pmd mergeable path with payload valid check
 
 6. On VM2, bind virtio with igb_uio driver,then run testpmd, config tx_packets to 8k length with chain mode::
 
-    ./dpdk-testpmd -c 0x3 -n 4 -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600
+    ./dpdk-testpmd -c 0x3 -n 4 -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600 --rx-offloads=0x00002000
     testpmd>set fwd mac
     testpmd>set txpkts 2000,2000,2000,2000
 
@@ -398,7 +399,7 @@ Test Case 6: VM2VM vhost-user/virtio1.0-pmd mergeable path with payload valid ch
 
 4. Bind virtio with igb_uio driver,then run testpmd, set rxonly mode for virtio-pmd on VM1::
 
-    ./dpdk-testpmd -c 0x3 -n 4 --file-prefix=test -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600
+    ./dpdk-testpmd -c 0x3 -n 4 --file-prefix=test -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600 --rx-offloads=0x00002000
     testpmd>set fwd rxonly
     testpmd>start
 
@@ -408,7 +409,7 @@ Test Case 6: VM2VM vhost-user/virtio1.0-pmd mergeable path with payload valid ch
 
 6. On VM2, bind virtio with igb_uio driver,then run testpmd, config tx_packets to 8k length with chain mode::
 
-    ./dpdk-testpmd -c 0x3 -n 4 -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600
+    ./dpdk-testpmd -c 0x3 -n 4 -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600 --rx-offloads=0x00002000
     testpmd>set fwd mac
     testpmd>set txpkts 2000,2000,2000,2000
 
@@ -431,7 +432,7 @@ Test Case 6: VM2VM vhost-user/virtio1.0-pmd mergeable path with payload valid ch
 
 11. Relaunch testpmd On VM2, send ten 64B packets from virtio-pmd on VM2::
 
-     ./dpdk-testpmd -c 0x3 -n 4 -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600
+     ./dpdk-testpmd -c 0x3 -n 4 -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600 --rx-offloads=0x00002000
      testpmd>set fwd mac
      testpmd>set burst 1
      testpmd>start tx_first 10
@@ -486,7 +487,7 @@ Test Case 7: VM2VM vhost-user/virtio1.1-pmd mergeable path with payload valid ch
 
 4. Bind virtio with igb_uio driver,then run testpmd, set rxonly mode for virtio-pmd on VM1::
 
-    ./dpdk-testpmd -c 0x3 -n 4 --file-prefix=test -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600
+    ./dpdk-testpmd -c 0x3 -n 4 --file-prefix=test -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600 --rx-offloads=0x00002000
     testpmd>set fwd rxonly
     testpmd>start
 
@@ -496,7 +497,7 @@ Test Case 7: VM2VM vhost-user/virtio1.1-pmd mergeable path with payload valid ch
 
 6. On VM2, bind virtio with igb_uio driver,then run testpmd, config tx_packets to 8k length with chain mode::
 
-    ./dpdk-testpmd -c 0x3 -n 4 -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600
+    ./dpdk-testpmd -c 0x3 -n 4 -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600 --rx-offloads=0x00002000
     testpmd>set fwd mac
     testpmd>set txpkts 2000,2000,2000,2000
 
@@ -519,7 +520,7 @@ Test Case 7: VM2VM vhost-user/virtio1.1-pmd mergeable path with payload valid ch
 
 11. Relaunch testpmd On VM2, send ten 64B packets from virtio-pmd on VM2::
 
-     ./dpdk-testpmd -c 0x3 -n 4 -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600
+     ./dpdk-testpmd -c 0x3 -n 4 -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600 --rx-offloads=0x00002000
      testpmd>set fwd mac
      testpmd>set burst 1
      testpmd>start tx_first 10
@@ -586,8 +587,8 @@ Test Case 9: VM2VM virtio-pmd split ring mergeable path 8 queues CBDMA enable wi
 
 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
+    ./dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost --vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.1;txq2@0000:00:04.2;txq3@0000:00:04.3;txq4@0000:00:04.4;txq5@0000:00:04.5;txq6@0000:00:04.6;txq7@0000:00:04.7]' \
+    --vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0@0000:80:04.0;txq1@0000:80:04.1;txq2@0000:80:04.2;txq3@0000:80:04.3;txq4@0000:80:04.4;txq5@0000:80:04.5;txq6@0000:80:04.6;txq7@0000:80:04.7]'  -- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=8
     testpmd>vhost enable tx all
     testpmd>start
 
@@ -624,13 +625,13 @@ Test Case 9: VM2VM virtio-pmd split ring mergeable path 8 queues CBDMA enable wi
 
 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
+    ./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 --rx-offloads=0x00002000
     testpmd>set mac fwd
     testpmd>start
 
 5. Launch testpmd in VM2, sent imix pkts from VM2::
 
-    ./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
+    ./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 --rx-offloads=0x00002000
     testpmd>set mac fwd
     testpmd>set txpkts 64,256,512,1024,2000,64,256,512,1024,2000
     testpmd>start tx_first 1
@@ -640,10 +641,10 @@ Test Case 9: VM2VM virtio-pmd split ring mergeable path 8 queues CBDMA enable wi
     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::
+7. Relaunch and start vhost side testpmd with below cmd::
 
-    ./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
+    ./dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost --vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.1;txq2@0000:00:04.2;txq3@0000:00:04.3;txq4@0000:00:04.4;txq5@0000:00:04.5;txq6@0000:00:04.6;txq7@0000:00:04.7]' \
+    --vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0@0000:80:04.0;txq1@0000:80:04.1;txq2@0000:80:04.2;txq3@0000:80:04.3;txq4@0000:80:04.4;txq5@0000:80:04.5;txq6@0000:80:04.6;txq7@0000:80:04.7]'  -- -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::
@@ -660,8 +661,8 @@ Test Case 10: VM2VM virtio-pmd split ring mergeable path dynamic queue size CBDM
 
 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
+    ./dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost --vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.1;txq2@0000:00:04.2;txq3@0000:00:04.3;txq4@0000:00:04.4;txq5@0000:00:04.5;txq6@0000:00:04.6;txq7@0000:00:04.7]' \
+    --vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0@0000:80:04.0;txq1@0000:80:04.1;txq2@0000:80:04.2;txq3@0000:80:04.3;txq4@0000:80:04.4;txq5@0000:80:04.5;txq6@0000:80:04.6;txq7@0000:80:04.7]'  -- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=4 --txq=4
     testpmd>vhost enable tx all
     testpmd>start
 
@@ -698,23 +699,23 @@ Test Case 10: VM2VM virtio-pmd split ring mergeable path dynamic queue size CBDM
 
 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
+    ./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 --rx-offloads=0x00002000
     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::
 
-    ./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
+    ./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 --rx-offloads=0x00002000
     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::
+6. Relaunch and start vhost side testpmd with eight queues::
 
-    ./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
+    ./dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost --vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.1;txq2@0000:00:04.2;txq3@0000:00:04.3;txq4@0000:00:04.4;txq5@0000:00:04.5;txq6@0000:00:04.6;txq7@0000:00:04.7]' \
+    --vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0@0000:80:04.0;txq1@0000:80:04.1;txq2@0000:80:04.2;txq3@0000:80:04.3;txq4@0000:80:04.4;txq5@0000:80:04.5;txq6@0000:80:04.6;txq7@0000:80:04.7]'  -- -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::
@@ -732,8 +733,8 @@ Test Case 11: VM2VM virtio-pmd packed ring mergeable path 8 queues CBDMA enable
 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
+    ./dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost --vdev 'net_vhost0,iface=vhost-net0,queues=8,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.1;txq2@0000:00:04.2;txq3@0000:00:04.3;txq4@0000:00:04.4;txq5@0000:00:04.5;txq6@0000:00:04.6;txq7@0000:00:04.7]' \
+    --vdev 'net_vhost1,iface=vhost-net1,queues=8,dmas=[txq0@0000:80:04.0;txq1@0000:80:04.1;txq2@0000:80:04.2;txq3@0000:80:04.3;txq4@0000:80:04.4;txq5@0000:80:04.5;txq6@0000:80:04.6;txq7@0000:80:04.7]'  -- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=8
     testpmd>vhost enable tx all
     testpmd>start
 
@@ -770,13 +771,13 @@ Test Case 11: VM2VM virtio-pmd packed ring mergeable path 8 queues CBDMA enable
 
 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
+    ./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 --rx-offloads=0x00002000
     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::
 
-    ./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
+    ./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 --rx-offloads=0x00002000
     testpmd>set mac fwd
     testpmd>set txpkts 64,256,512,1024,20000,64,256,512,1024,20000
     testpmd>start tx_first 32
@@ -802,7 +803,7 @@ Test Case 11: VM2VM virtio-pmd packed ring mergeable path 8 queues CBDMA enable
     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
-    ./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
+    ./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 --rx-offloads=0x00002000
     testpmd>set mac fwd
     testpmd>set txpkts 64,256,512,1024,20000,64,256,512,1024,20000
     testpmd>start tx_first 32
