[Intel-gfx] [PATCH 15/26] drm/i915: Create page table allocators

[Chris Wilson]

On Mon, Mar 17, 2014 at 10:48:47PM -0700, Ben Widawsky wrote:
> As we move toward dynamic page table allocation, it becomes much easier
> to manage our data structures if break do things less coarsely by
> breaking up all of our actions into individual tasks.  This makes the
> code easier to write, read, and verify.
> 
> Aside from the dissection of the allocation functions, the patch
> statically allocates the page table structures without a page directory.
> This remains the same for all platforms,
> 
> The patch itself should not have much functional difference. The primary
> noticeable difference is the fact that page tables are no longer
> allocated, but rather statically declared as part of the page directory.
> This has non-zero overhead, but things gain non-trivial complexity as a
> result.

We increase overhead for increased complexity. What's the selling point
of this patch then?

Otherwise, patch does as you say.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre