I think now I have an answer to my question.
I will back come in a couple of weeks with a generic dmabuf allocator.
The feature set of this should be:
- allow to have per device specificone allocator
- ioctl for buffer allocation and exporting dmabuf file descriptor on /dev/foo
- generic API to b
> dma-buf user handles are fds, which means anything allocated can be passed
> around nicely already. The question really is whether we'll have one ioctl
> on top of a special dev node or a syscall. I thought that in these cases
> where the dev node is only ever used to allocate the real thing, a s
Am 08.05.2015 um 10:37 schrieb Daniel Vetter:
dma-buf user handles are fds, which means anything allocated can be passed
around nicely already. The question really is whether we'll have one ioctl
on top of a special dev node or a syscall. I thought that in these cases
where the dev node is only
On Thu, May 07, 2015 at 05:40:03PM +0100, One Thousand Gnomes wrote:
> On Thu, 7 May 2015 15:52:12 +0200
> Daniel Vetter wrote:
>
> > 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
On Thu, 7 May 2015 15:52:12 +0200
Daniel Vetter wrote:
> 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 sy
On Wed, May 06, 2015 at 07:29:56AM -0400, Rob Clark wrote:
> On Wed, May 6, 2015 at 4:35 AM, Daniel Vetter wrote:
> > On Tue, May 05, 2015 at 05:54:05PM +0100, One Thousand Gnomes wrote:
> >> > First what is Secure Data Path ? SDP is a set of hardware features to
> >> > garanty
> >> > that some m
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 s
On Wed, May 06, 2015 at 03:15:32PM +0200, Daniel Vetter wrote:
> On Wed, May 06, 2015 at 11:19:21AM +0200, Thierry Reding wrote:
> > On Wed, May 06, 2015 at 10:35:52AM +0200, Daniel Vetter wrote:
> > > On Tue, May 05, 2015 at 05:54:05PM +0100, One Thousand Gnomes wrote:
> > > > > First what is Secu
On Wed, May 06, 2015 at 11:19:21AM +0200, Thierry Reding wrote:
> On Wed, May 06, 2015 at 10:35:52AM +0200, Daniel Vetter wrote:
> > On Tue, May 05, 2015 at 05:54:05PM +0100, One Thousand Gnomes wrote:
> > > > First what is Secure Data Path ? SDP is a set of hardware features to
> > > > garanty
>
On Wed, May 6, 2015 at 4:35 AM, Daniel Vetter wrote:
> On Tue, May 05, 2015 at 05:54:05PM +0100, One Thousand Gnomes wrote:
>> > 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
>> > har
I agree that the best solution is to have a generic dmabuf allocator
but no only for secure use cases.
If we create a memory allocator dedicated to security it means that
userland will be responsible to use it or not depending of the context
which may change while the pipeline/graph is already run
On Wed, May 06, 2015 at 10:35:52AM +0200, Daniel Vetter wrote:
> On Tue, May 05, 2015 at 05:54:05PM +0100, One Thousand Gnomes wrote:
> > > 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 specif
On 05/06/15 10:35, Daniel Vetter wrote:
> On Tue, May 05, 2015 at 05:54:05PM +0100, One Thousand Gnomes wrote:
>>> 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
2015-05-05 18:54 GMT+02:00 One Thousand Gnomes :
>> 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
>> acce
On Wed, May 06, 2015 at 03:50:13AM +0300, Laurent Pinchart wrote:
> 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
On Tue, May 05, 2015 at 05:54:05PM +0100, One Thousand Gnomes wrote:
> > 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 firewa
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
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 w
> 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 mus
Hello,
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 garant
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