[Intel-gfx] [PATCH 07/11] drm/i915: Use subslice stride to set subslices for a given slice

[Chris Wilson]

Quoting Stuart Summers (2019-08-23 17:03:03)
> Add a subslice stride calculation when setting subslices. This
> aligns more closely with the userspace expectation of the subslice
> mask structure.
> 
> v2: Use local variable for subslice_mask on HSW and
>     clean up a few other subslice_mask local variable
>     changes
> v3: Add GEM_BUG_ON for ss_stride to prevent array overflow (Chris)
>     Split main set function and refactors in intel_device_info.c
>     into separate patches (Chris)
> v4: Reduce ss_stride size check when setting subslices per slice
>     based on actual expected max stride (Chris)
>     Move that GEM_BUG_ON check for the ss_stride out to the patch
>     which adds the ss_stride
> v5: Use memcpy instead of looping through each stride index
> 
> Signed-off-by: Stuart Summers <stuart.summers at intel.com>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris