[Intel-gfx] [PATCH v3] drm/i915/execlists: Move WA_TAIL_DWORDS to callee

[Dave Gordon]

On 06/02/16 09:33, Chris Wilson wrote:
> On Fri, Feb 05, 2016 at 02:56:51PM -0800, Rodrigo Vivi wrote:
>> On Fri, Feb 5, 2016 at 11:31 AM, Dave Gordon <david.s.gordon at intel.com> wrote:
>>> @@ -907,7 +927,8 @@ int intel_logical_ring_reserve_space(struct drm_i915_gem_request *request)
>>>           * adding any commands to it then there might not actually be
>>>           * sufficient room for the submission commands.
>>>           */
>>> -       intel_ring_reserved_space_reserve(request->ringbuf, MIN_SPACE_FOR_ADD_REQUEST);
>>> +       intel_ring_reserved_space_reserve(request->ringbuf,
>>> +                       MIN_SPACE_FOR_ADD_REQUEST + WA_TAIL_DWORDS);
>
> This should already be included in the MIN_SPACE_FOR_ADD_REQUEST as that
> value is universal (and is adequate for the moment).
> -Chris

I didn't put it there because we needed the extra space at present, but 
rather so that people changing either of those two values would be more 
likely to think about whether there were any unexpected interactions.

.Dave.