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Often times we do not want to evict mapped objects from the GGTT as these are quite expensive to teardown and frequently reused (causing an equally, if not more so, expensive setup). In particular, when faulting in a new object we want to avoid evicting an active object, or else we may trigger a page-fault-of-doom as we ping-pong between evicting two objects. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20160818161718.27187-26-chris@chris-wilson.co.uk |
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