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3c7ba6359d
This patch introduces an approach to track the execlist context status change. GVT-g uses GVT context as the "shadow context". The content inside GVT context will be copied back to guest after the context is idle. And GVT-g has to know the status of the execlist context. This function is configurable when creating a new GEM context. Currently, Only GVT-g will create the "status-change-notification" enabled GEM context. v10: - Fix the identation. (Joonas) v8: - Remove the boolean flag in struct i915_gem_context. (Joonas) v7: - Remove per-engine ctx status notifiers. Use one status notifier for all engines. (Joonas) - Add prefix "INTEL_" for related definitions. (Joonas) - Refine the comments in execlists_context_status_change(). (Joonas) v6: - When !CONFIG_DRM_I915_GVT, make GVT code as dead code then compiler could automatically eliminate them for us. (Chris) - Always initialize the notifier header, so it could be switched on/off at runtime. (Chris) v5: - Only compile this feature when CONFIG_DRM_I915_GVT is enabled.(Tvrtko) Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> (v8) Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Signed-off-by: Zhi Wang <zhi.a.wang@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1466078825-6662-8-git-send-email-zhi.a.wang@intel.com Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> |
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