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As the execbuffer dispatch grows ever more complex and involves multiple stages of moving objects into the aperture, we need to take greater care that we do not evict our execbuffer objects prior to dispatch. This is relatively simple as we can just keep the objects pinned for not just the relocation but until we are finished. One such example is the possibility of the context switch causing an eviction or hitting the shrinker in order to fit its object into the aperture. Link: http://lists.freedesktop.org/archives/intel-gfx/2013-November/036166.html Reported-by: "Siluvery, Arun" <arun.siluvery@intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Ben Widawsky <benjamin.widawsky@intel.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: stable@vger.kernel.org Acked-by: Ben Widawsky <ben@bwidawsk.net> Tested-by: Ben Widawsky <ben@bwidawsk.net> [danvet: Add the additional explanations from Chris to the commit message.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> |
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