On Tuesday 05 May 2015 09:27:52 Christoph Hellwig wrote: > 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. The irony of it is to post an RFC on they day before http://www.defectivebydesign.org/dayagainstdrm/ :-) -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
