[Intel-gfx] [PATCH] drm/i915/gem: Support discontiguous lmem object maps

[Chris Wilson]

Quoting Chris Wilson (2020-01-01 22:09:27)
> +               ptes = mem;
> +               for_each_sgt_daddr(addr, sgt_iter, sgt)
> +                       **ptes++ = io_wc_pte(addr);

Addr is just relative to the start of lmem, this needs the iobar offset
as well. That magic is that using any old physical address just works,
until you hit something important!
-Chris