Re: [Intel-gfx] [PATCH v16 02/13] drm/i915: add syncobj timeline support

2019-09-09 Thread Lionel Landwerlin

On 10/09/2019 00:06, Chris Wilson wrote:

Quoting Lionel Landwerlin (2019-09-09 10:31:05)

v9: After explanations on
 https://lists.freedesktop.org/archives/dri-devel/2019-August/229287.html
 drop the ordering check from v8 (Lionel)

Designing an interface to be antirobust. Userspace shooting itself in
the foot is fine; userspace breaking the kernel in the process, no.
-Chris


How is that breaking the kernel?

Adding points out of order to the timeline just leads to more waiting.


-Lionel

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Re: [Intel-gfx] [PATCH v16 02/13] drm/i915: add syncobj timeline support

2019-09-09 Thread Chris Wilson
Quoting Lionel Landwerlin (2019-09-09 10:31:05)
> v9: After explanations on
> https://lists.freedesktop.org/archives/dri-devel/2019-August/229287.html
> drop the ordering check from v8 (Lionel)

Designing an interface to be antirobust. Userspace shooting itself in
the foot is fine; userspace breaking the kernel in the process, no.
-Chris
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