[Intel-gfx] [PATCH v2 1/3] drm/i915: Bump object bookkeeping to u64 from size_t

[Chris Wilson]

On Mon, Oct 17, 2016 at 12:48:17PM +0300, Joonas Lahtinen wrote:
> On ma, 2016-10-17 at 09:00 +0100, Chris Wilson wrote:
> > Internally we allow for using more objects than a single process can
> > allocate, i.e. we allow for a 64bit GPU address space even on a 32bit
> > system. Using size_t may oveerflow.
> > 
> > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> 
> How might we get more than size_t passed in? I only notice a single
> instance which uses obj.base->size which is size_t.
> 
> So I'd not change the function parameters, only the sum. With that;

Our ABI is u64. The values we pass around are u64. Only we chose to use
size_t for the object, go figure.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre