Quoting Chris Wilson (2019-09-11 11:19:59) > If the display is inactive, we need not worry about the gpu reset > clobbering the display! To prevent the display changing state between us > checking the active state and doing the hard reset, we introduce the > lightweight reset lock to the atomic commit for the affected (legacy) > platforms.
> + /* Prevent starting a GPU reset while we change global display state > */ > + srcu = -ENODEV; > + if (INTEL_INFO(dev_priv)->gpu_reset_clobbers_display) > + /* only fails if interrupted */ > + srcu = intel_gt_reset_trylock(&dev_priv->gt); This is overkill? Before starting the GPU reset, we serialise with the modeset, do we not? -Chris _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
