From: Christoph Hellwig <hch@infradead.org>
To: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: "linux-media@vger.kernel.org" <linux-media@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
Hans Verkuil <hverkuil@xs4all.nl>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Daniel Vetter <daniel.vetter@ffwll.ch>,
Rob Clark <robdclark@gmail.com>,
Thierry Reding <treding@nvidia.com>,
Dave Airlie <airlied@redhat.com>,
Sumit Semwal <sumit.semwal@linaro.org>,
Tom Gall <tom.gall@linaro.org>
Subject: Re: [RFC] How implement Secure Data Path ?
Date: Tue, 5 May 2015 09:27:52 -0700 [thread overview]
Message-ID: <20150505162752.GA12132@infradead.org> (raw)
In-Reply-To: <CA+M3ks7=3sfRiUdUiyq03jCbp08FdZ9ESMgDwE5rgb-0+No3uA@mail.gmail.com>
On Tue, May 05, 2015 at 05:39:57PM +0200, Benjamin Gaignard wrote:
> Since few months I'm looking for Linaro to how do Secure Data Path (SPD).
> I have tried and implemented multiple thinks but I always facing architecture
> issues so I would like to get your help to solve the problem.
>
> First what is Secure Data Path ? SDP is a set of hardware features to garanty
> that some memories regions could only be read and/or write by specific hardware
> IPs. You can imagine it as a kind of memory firewall which grant/revoke
> accesses to memory per devices. Firewall configuration must be done in a trusted
> environment: for ARM architecture we plan to use OP-TEE + a trusted
> application to do that.
>
> One typical use case for SDP in a video playback which involve those elements:
> decrypt -> video decoder -> transform -> display
Sounds like a good enough reason not to implement it ever.
next prev parent reply other threads:[~2015-05-05 16:27 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-05 15:39 Benjamin Gaignard
2015-05-05 16:27 ` Christoph Hellwig [this message]
2015-05-06 0:50 ` Laurent Pinchart
2015-05-06 8:37 ` Daniel Vetter
2015-05-05 16:54 ` One Thousand Gnomes
2015-05-06 8:35 ` Daniel Vetter
2015-05-06 8:49 ` Hans Verkuil
2015-05-06 9:19 ` Thierry Reding
2015-05-06 13:15 ` Daniel Vetter
2015-05-07 13:22 ` Thierry Reding
2015-05-07 13:52 ` Daniel Vetter
2015-05-07 16:40 ` One Thousand Gnomes
2015-05-08 8:37 ` Daniel Vetter
2015-05-08 8:55 ` Enrico Weigelt, metux IT consult
2015-05-08 19:18 ` One Thousand Gnomes
2015-05-12 8:46 ` Benjamin Gaignard
2015-05-06 9:22 ` Benjamin Gaignard
2015-05-06 11:29 ` Rob Clark
2015-05-07 14:41 ` Thierry Reding
2015-05-06 8:46 ` Benjamin Gaignard
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20150505162752.GA12132@infradead.org \
--to=hch@infradead.org \
--cc=airlied@redhat.com \
--cc=benjamin.gaignard@linaro.org \
--cc=daniel.vetter@ffwll.ch \
--cc=dri-devel@lists.freedesktop.org \
--cc=hverkuil@xs4all.nl \
--cc=laurent.pinchart@ideasonboard.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=robdclark@gmail.com \
--cc=sumit.semwal@linaro.org \
--cc=tom.gall@linaro.org \
--cc=treding@nvidia.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®