Chris Wilson fbb30a5c46 drm/i915: Flush to GTT domain all GGTT bound objects after hibernation ... Recently I have been applying an optimisation to avoid stalling and clflushing GGTT objects based on their current binding. That is we only set-to-gtt-domain upon first bind. However, on hibernation the objects remain bound, but they are in the CPU domain. Currently (since commit 975f7ff42e ("drm/i915: Lazily migrate the objects after hibernation")) we only flush scanout objects as all other objects are expected to be flushed prior to use. That breaks down in the face of the runtime optimisation above - and we need to flush all GGTT pinned objects (essentially ringbuffers). To reduce the burden of extra clflushes, we only flush those objects we cannot discard from the GGTT. Everything pinned to the scanout, or current contexts or ringbuffers will be flushed and rebound. Other objects, such as inactive contexts, will be left unbound and in the CPU domain until first use after resuming. Fixes: 7abc98fadf ("drm/i915: Only change the context object's domain...") Fixes: 57e8853181 ("drm/i915: Use VMA for ringbuffer tracking") References: https://bugs.freedesktop.org/show_bug.cgi?id=94722 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Mika Kuoppala <mika.kuoppala@intel.com> Cc: David Weinehall <david.weinehall@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20160909201957.2499-1-chris@chris-wilson.co.uk		2016-09-09 21:31:43 +01:00
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drm	drm/i915: Flush to GTT domain all GGTT bound objects after hibernation	2016-09-09 21:31:43 +01:00
host1x	gpu: host1x: Remove useless local variable	2016-06-23 11:59:33 +02:00
ipu-v3	gpu: ipu-v3: rename CSI client device	2016-08-08 11:44:20 +02:00
vga	vga_switcheroo: Sphinxify docs	2016-07-12 16:14:36 +02:00
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