From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: "Walker, Benjamin" <benjamin.walker@intel.com>
Cc: dev@dpdk.org, Stephen Hemminger <stephen@networkplumber.org>
Subject: Re: [dpdk-dev] Running DPDK as an unprivileged user
Date: Mon, 02 Jan 2017 15:32:08 +0100 [thread overview]
Message-ID: <30911426.SrBqgP6jBN@xps13> (raw)
In-Reply-To: <20161229171453.57a4326a@xeon-e3>
2016-12-29 17:14, Stephen Hemminger:
> On Thu, 29 Dec 2016 20:41:21 +0000
> "Walker, Benjamin" <benjamin.walker@intel.com> wrote:
> > My second question is whether the user should be allowed to
> > mix uio and vfio usage simultaneously. For vfio, the
> > physical addresses are really DMA addresses and are best
> > when arbitrarily chosen to appear sequential relative to
> > their virtual addresses. For uio, they are physical
> > addresses and are not chosen at all. It seems that these two
> > things are in conflict and that it will be difficult, ugly,
> > and maybe impossible to resolve the simultaneous use of
> > both.
>
> Unless application is running as privileged user (ie root), UIO
> is not going to work. Therefore don't worry about mixed environment.
Yes, mixing UIO and VFIO is possible only as root.
However, what is the benefit of mixing them?
next prev parent reply other threads:[~2017-01-02 14:32 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-29 20:41 Walker, Benjamin
2016-12-30 1:14 ` Stephen Hemminger
2017-01-02 14:32 ` Thomas Monjalon [this message]
2017-01-02 19:47 ` Stephen Hemminger
2017-01-03 22:50 ` Walker, Benjamin
2017-01-04 10:11 ` Thomas Monjalon
2017-01-04 21:35 ` Walker, Benjamin
2017-01-04 11:39 ` Tan, Jianfeng
2017-01-04 21:34 ` Walker, Benjamin
2017-01-05 10:09 ` Sergio Gonzalez Monroy
2017-01-05 10:16 ` Sergio Gonzalez Monroy
2017-01-05 14:58 ` Tan, Jianfeng
2017-01-05 15:52 ` Tan, Jianfeng
2017-11-05 0:17 ` Thomas Monjalon
2017-11-27 17:58 ` Walker, Benjamin
2017-11-28 14:16 ` Alejandro Lucero
2017-11-28 17:50 ` Walker, Benjamin
2017-11-28 19:13 ` Alejandro Lucero
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