[Intel-gfx] [PATCH 4/5] drm/i915: Early rejection of buffer allocations larger than RAM

[Joonas Lahtinen]

Quoting Chris Wilson (2018-09-03 11:33:36)
> We currently try to pin and allocate the whole buffer at a time. If that
> object is larger than RAM, we will try to pin the whole of physical
> memory, force the machine into oom, and then still fail the allocation.
> 
> If the request is obviously too large, error out early. We opt to do
> this in the backend to make it easy to use alternate paths that do not
> require the entire object pinned, or may easily handle proxy objects
> that are larger than physical memory.
> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>

Regards, Joonas