On Mon, May 23, 2016 at 10:33:24AM +0100, Tvrtko Ursulin wrote:
> >@@ -313,30 +311,14 @@ i915_gem_create_context(struct drm_device *dev,
> > if (IS_ERR(ctx))
> > return ctx;
> >
> >- if (is_global_default_ctx && ctx->legacy_hw_ctx.rcs_state) {
> >- /* We may need to do things with the shrinker which
> >- * require us to immediately switch back to the default
> >- * context. This can cause a problem as pinning the
> >- * default context also requires GTT space which may not
> >- * be available. To avoid this we always pin the default
> >- * context.
> >- */
> >- ret = i915_gem_obj_ggtt_pin(ctx->legacy_hw_ctx.rcs_state,
> >- get_context_alignment(to_i915(dev)), 0);
> >- if (ret) {
> >- DRM_DEBUG_DRIVER("Couldn't pin %d\n", ret);
> >- goto err_destroy;
> >- }
> >- }
> >-
> > if (USES_FULL_PPGTT(dev)) {
> > struct i915_hw_ppgtt *ppgtt = i915_ppgtt_create(dev, file_priv);
> >
> >- if (IS_ERR_OR_NULL(ppgtt)) {
> >+ if (IS_ERR(ppgtt)) {
> > DRM_DEBUG_DRIVER("PPGTT setup failed (%ld)\n",
> > PTR_ERR(ppgtt));
> >- ret = PTR_ERR(ppgtt);
> >- goto err_unpin;
> >+ i915_gem_context_put(ctx);
> >+ return ERR_CAST(ppgtt);
> > }
> >
> > ctx->ppgtt = ppgtt;
> >@@ -345,14 +327,6 @@ i915_gem_create_context(struct drm_device *dev,
> > trace_i915_context_create(ctx);
> >
> > return ctx;
> >-
> >-err_unpin:
> >- if (is_global_default_ctx && ctx->legacy_hw_ctx.rcs_state)
> >- i915_gem_object_ggtt_unpin(ctx->legacy_hw_ctx.rcs_state);
> >-err_destroy:
> >- idr_remove(&file_priv->context_idr, ctx->user_handle);
>
> Isn't idr_remove still required in the error path above?
Yes. I can blame a rebase error here since in the kernel it was
extracted upon we call context_close() here instead which does the idr
removal as well.
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
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