5ab57c7020
Before suspend, and especially before building the hibernation image, we need to context image to be coherent in memory. To do this we require that we perform a context switch to a disposable context (i.e. the dev_priv->kernel_context) - when that switch is complete, all other context images will be complete. This leaves the kernel_context image as incomplete, but fortunately that is disposable and we can do a quick fixup of the logical state after resuming. v2: Share the nearly identical code to switch to the kernel context with eviction. v3: Explain why we need the switch and reset. Testcase: igt/gem_exec_suspend # bsw References: https://bugs.freedesktop.org/show_bug.cgi?id=96526 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Tested-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1468590980-6186-2-git-send-email-chris@chris-wilson.co.uk |
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