[ovs-discuss] [ovs-dev] rte_eal_init() error when using ovs-dpdk with secondary application.

Junguk Cho jmanbal at gmail.com
Thu Jun 15 15:57:52 UTC 2017


Hi, Aaron.

Thank you for reply.

You will need to use populate this option into other_config:dpdk-extra
in the ovsdb.

  ovs-vsctl --no-wait set Open_vSwitch \
      . other_config:dpdk-extra="--base-virtaddr=..."

-> I tried to use "struct rte_memseg *m = rte_eal_get_physmem_layout()"
option based on (http://dpdk.org/doc/api/structrte__memseg.html).
Always it returns different number.
How do I get virtual address value to use it as an input of "base-viraddr"?

I don't know the base virtual address value you should use, however.
-> Do you mean it will not help?

Thanks,
Junguk


On Thu, Jun 15, 2017 at 9:28 AM, Aaron Conole <aconole at redhat.com> wrote:

> Junguk Cho <jmanbal at gmail.com> writes:
>
> > Hi,
> >
> > I use ovs-dpdk (ovs-2.7, dpdk-16.11.1) with one application which talks
> to
> > ovs by using ring device and "--proc-type=secondary" (secondary
> processes).
> > It generally works well, but sometimes it shows this error.
> >
> > It seems it could not find correct memory mapping in the application.
> >
> > 2017-06-13 11:21:40.988 STDERR Thread-2 [INFO] EAL: Probing VFIO
> support...
> > 2017-06-13 11:21:40.988 STDERR Thread-2 [INFO] EAL: WARNING: Address
> Space
> > Layout Randomization (ASLR) is enabled in the kernel.
> > 2017-06-13 11:21:40.988 STDERR Thread-2 [INFO] EAL:    This may cause
> > issues with mapping memory into secondary processes
> > 2017-06-13 11:21:40.989 STDERR Thread-2 [INFO] EAL: Could not mmap
> > 17146314752 <(714)%20631-4752> bytes in /dev/zero at [0x7f662c800000],
> got
> > [0x7f6506000000] - please use '--base-virtaddr' option
> > 2017-06-13 11:21:40.989 STDERR Thread-2 [INFO] EAL: It is recommended to
> > disable ASLR in the kernel and retry running both primary and secondary
> > processes
> > 2017-06-13 11:21:40.990 STDERR Thread-2 [INFO] PANIC in rte_eal_init():
> > 2017-06-13 11:21:40.990 STDERR Thread-2 [INFO] Cannot init memory
> >
> > I tried to disable ASLR, but it did not work.
> >
> > Does anyone have a similar situation?
> > Based on this page (https://github.com/collectd/collectd/issues/2284),
> this
> > is known issue and it seemed we can avoid this with "--base-virtaddr"
> > option.
> > Does anyone know how to use this option in ovs-dpdk?
>
> You will need to use populate this option into other_config:dpdk-extra
> in the ovsdb.
>
>   ovs-vsctl --no-wait set Open_vSwitch \
>       . other_config:dpdk-extra="--base-virtaddr=..."
>
> I don't know the base virtual address value you should use, however.
>
> -Aaron
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.openvswitch.org/pipermail/ovs-discuss/attachments/20170615/bde11bff/attachment.html>


More information about the discuss mailing list