From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-wg0-f44.google.com ([74.125.82.44]:34250 "EHLO mail-wg0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750793AbbEGNty (ORCPT ); Thu, 7 May 2015 09:49:54 -0400 Received: by wgic8 with SMTP id c8so17674546wgi.1 for ; Thu, 07 May 2015 06:49:53 -0700 (PDT) Date: Thu, 7 May 2015 15:52:12 +0200 From: Daniel Vetter To: Thierry Reding Cc: One Thousand Gnomes , Benjamin Gaignard , "linux-media@vger.kernel.org" , Linux Kernel Mailing List , "dri-devel@lists.freedesktop.org" , Hans Verkuil , Laurent Pinchart , Rob Clark , Dave Airlie , Sumit Semwal , Tom Gall Subject: Re: [RFC] How implement Secure Data Path ? Message-ID: <20150507135212.GD30184@phenom.ffwll.local> References: <20150505175405.2787db4b@lxorguk.ukuu.org.uk> <20150506083552.GF30184@phenom.ffwll.local> <20150506091919.GC16325@ulmo.nvidia.com> <20150506131532.GC30184@phenom.ffwll.local> <20150507132218.GA24541@ulmo.nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150507132218.GA24541@ulmo.nvidia.com> Sender: linux-media-owner@vger.kernel.org List-ID: On Thu, May 07, 2015 at 03:22:20PM +0200, Thierry Reding wrote: > On Wed, May 06, 2015 at 03:15:32PM +0200, Daniel Vetter wrote: > > Yes the idea would be a special-purpose allocater thing like ion. Might > > even want that to be a syscall to do it properly. > > Would you care to elaborate why a syscall would be more proper? Not that > I'm objecting to it, just for my education. It seems to be the theme with someone proposing a global /dev node for a few system wide ioctls, then reviewers ask to make a proper ioctl out of it. E.g. kdbus, but I have vague memory of this happening a lot. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch