[dpdk-dev] DPDK xen-dom0 not working at all

[Murillo]

English is not my native language; please excuse typing errors.


I am new to DPDK with Xen, but I am able to run DPDK applications 
without xen using hugepages. But when I try to do it in xen-dom0 it does 
not work. Let me explain:


I have followed the intructions on the Getting Started Guide, so I 
execute the next steps:


Dpdk/config/common_linuxapp

CONFIG_RTE_LIBRTE_XEN_DOM0=y

make config T=x86_64-native-linuxapp-gcc

make install T=x86_64-native-linuxapp-gcc

sudo modprobe uio

sudo insmod x86_64-native-linuxapp-gcc/kmod/igb_uio.ko

sudo insmod x86_64-native-linuxapp-gcc/kmod/rte_dom0_mm.ko rsv_memsize=2048

echo 2048 /sys/kernel/mm/dom0-mm/memsize-mB/memsize

tools/dpdk_nic_bind.py --bind=igb_uio $(tools/dpdk_nic_bind.py --status 
| sed -rn 's,.* if=([^ ]*).*igb_uio *$,\1,p')



The main problem appears when I try to execute helloworld for example.

Sudo ./build/helloworld -c 0xf -n 2 –xen-dom0

Output:

EAL: Detected lcore 0 as core 0 on socket 0

EAL: Detected lcore 1 as core 0 on socket 0

EAL: Detected lcore 2 as core 1 on socket 0

…

EAL: Detected lcore 39 as core 12 on socket 0

EAL: Support maximum 64 logical core(s) by configuration.

EAL: Detected 40 lcore(s)

And it stops.



If I execute dmegs I get the following:

[ 1098.120193] helloworld[20116] trap invalid opcode ip:45adb7 
sp:7fff4cf7e150 error:0 in helloworld[400000+115000]



Here are the characteristics of the server:

DPDK 1.7.1

xm info:

host : vh05

release : 3.5.0-47-generic

version : #71~precise1-Ubuntu SMP Wed Feb 19 22:02:52 UTC 2014

machine : x86_64

nr_cpus : 40

nr_nodes : 2

cores_per_socket : 10

threads_per_core : 2

cpu_mhz : 3000

hw_caps : 
bfebfbff:2c100800:00000000:00007f40:73bee3ff:00000000:00000001:00000281

virt_caps : hvm hvm_directio

total_memory : 32722

free_memory : 28196

free_cpus : 0

xen_major : 4

xen_minor : 1

xen_extra : .5

xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p 
hvm-3.0-x86_64

xen_scheduler : credit

xen_pagesize : 4096

platform_params : virt_start=0xffff800000000000

xen_changeset : unavailable

xen_commandline : placeholder dom0_mem=4096M max_loop=64

cc_compiler : gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)

cc_compile_by : stefan.bader

cc_compile_domain : canonical.com

cc_compile_date : Wed Feb 19 15:32:59 UTC 2014

xend_config_format : 4



Thank you in anvanced.