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drm/xe: Add an extra page to res cursor init migrate code

Matthew Brost requested to merge mbrost/xe-kernel-driver-fix-missing-guc-firmware:res_cursor into xe

Avoid blow up in xe_res_next() on last iteration on emit_pte() by padding an extra page on cursor init. A blow up will still occur if the cursor is used beyond the last page on that iteration.

Signed-off-by: Matthew Brost matthew.brost@intel.com

Believe this should fix the following issue: #183 (closed)

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