drm/i915/gen8: pagetable allocation rework
Start using gen8_for_each_pde macro to allocate page tables. v2: teardown_va_range references removed. v3: Rebase after s/page_tables/page_table/. v4: Keep setting up page tables for all page directories in systems with less than 4GB of memory. v5: Also initialize the page tables. (Mika) v6: Initialize all page tables, including the extra ones from systems with less than 4GB of memory. (Mika) Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Signed-off-by: Ben Widawsky <ben@bwidawsk.net> Signed-off-by: Michel Thierry <michel.thierry@intel.com> (v2+) Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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