On 2019/06/14, Koenig, Christian wrote:
Am 14.06.19 um 17:53 schrieb Emil Velikov:
On 2019/06/14, Koenig, Christian wrote:
Am 14.06.19 um 14:09 schrieb Emil Velikov:
On 2019/05/27, Emil Velikov wrote: [SNIP] Hi Christian,
In the following, I would like to summarise and emphasize the need for DRM_AUTH removal. I would kindly ask you to spend a couple of minutes extra reading it.
Today DRM drivers* do not make any distinction between primary and render node clients.
That is actually not 100% correct. We have a special case where a DRM master is allowed to change the priority of render node clients.
Can you provide a link? I cannot find that code.
See amdgpu_sched_ioctl().
Thus for a render capable driver, any premise of separation, security or otherwise imposed via DRM_AUTH is a fallacy.
Yeah, that's what I agree on. I just don't think that removing DRM_AUTH now is the right direction to take.
Could have been clearer - I'm talking about DRM_AUTH | DRM_RENDER_ALLOW ioctls.
That aside, can you propose an alternative solution that addresses this and the second point just below?
Give me a few days to work on this, it's already Friday 6pm here.
Hi Christian,
Any progress? As mentioned earlier, I'm OK with writing the patches although I would love to hear your plan.
Thanks Emil