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From: "Wiles, Keith" <keith.wiles@intel.com>
To: John Ousterhout <ouster@cs.stanford.edu>
CC: "users@dpdk.org" <users@dpdk.org>
Thread-Topic: [dpdk-users] Running DPDK as non-root
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Date: Fri, 19 Aug 2016 18:39:28 +0000
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Subject: Re: [dpdk-users] Running DPDK as non-root
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Regards,
Keith

> On Aug 19, 2016, at 1:16 PM, John Ousterhout <ouster@cs.stanford.edu> wro=
te:
>=20
> I'm trying to run a DPDK application as a normal user without root
> privilege, and saw the instructions here:
>=20
> http://dpdk.org/doc/guides/linux_gsg/enable_func.html
>=20
> However, when I try this I get the following log messages:
>=20
> EAL: Detected 8 lcore(s)
> EAL: Probing VFIO support...
> EAL: Cannot open /proc/self/pagemap: Operation not permitted. virt2phys
> address translation will not work
> PANIC in rte_eal_init():
> Cannot init memory
>=20
> I tried to change the permissions on /proc/self/pagemap, but that is
> disallowed, even if I try it as root.
>=20
> Any suggestions on how to get around this problem?

I have tried a couple times to make this happen for my development, but wit=
hout any luck.

I believe one of the big problems is related the virt2phy address translati=
on is done in the kernel and it is seen as a security hole if a user level =
application is able to access that information.


>=20
> Thanks in advance for the help.
>=20
> -John-