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drm/i915: Allocate scratch page from stolen

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With the last direct CPU access to the scratch page removed, we can now
allocate it from our small amount of reserved system pages (stolen
memory).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1467390209-3576-10-git-send-email-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2016-07-01 17:23:19 +01:00
parent f8291952bd
commit de8fe1663a
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/i915/intel_ringbuffer.c
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@ -665,7 +665,9 @@ int intel_init_pipe_control(struct intel_engine_cs *engine)
WARN_ON(engine->scratch.obj);
obj = i915_gem_object_create(engine->i915->dev, 4096);
obj = i915_gem_object_create_stolen(engine->i915->dev, 4096);
if (!obj)
obj = i915_gem_object_create(engine->i915->dev, 4096);
if (IS_ERR(obj)) {
DRM_ERROR("Failed to allocate scratch page\n");
ret = PTR_ERR(obj);