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Commit 5d12fcef authored by Chris Wilson's avatar Chris Wilson
Browse files

drm/i915: Assert that the kernel_context is hw-id 0 



For easy recognisability, we want the kernel context to have id 0 and
all user contexts to have non-zero ids.

Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: default avatarJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170123113132.18665-1-chris@chris-wilson.co.uk
parent 2f1ac9cc

drivers/gpu/drm/i915/i915_gem_context.c

+5 −0
Original line number Diff line number Diff line
@@ -451,6 +451,11 @@ int i915_gem_context_init(struct drm_i915_private *dev_priv) 
		return PTR_ERR(ctx);

	}



	/* For easy recognisablity, we want the kernel context to be 0 and then

	 * all user contexts will have non-zero hw_id.

	 */

	GEM_BUG_ON(ctx->hw_id);



	i915_gem_context_clear_bannable(ctx);

	ctx->priority = I915_PRIORITY_MIN; /* lowest priority; idle task */

	dev_priv->kernel_context = ctx;