[PATCH 053/131] drm/i915: Allow the user to pass a context to any ring

Chris Wilson chris at chris-wilson.co.uk
Sat Aug 6 07:36:20 UTC 2016

With full-ppgtt, we want the user to have full control over their memory
layout, with a separate instance per context. Forcing them to use a
shared memory layout for !RCS not only duplicates the amount of work we
have to do, but also defeats the memory segregation on offer.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
 drivers/gpu/drm/i915/i915_gem_execbuffer.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index ddd4e316ccc8..95ac084cce70 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -1253,12 +1253,9 @@ static struct i915_gem_context *
 i915_gem_validate_context(struct drm_device *dev, struct drm_file *file,
 			  struct intel_engine_cs *engine, const u32 ctx_id)
-	struct i915_gem_context *ctx = NULL;
+	struct i915_gem_context *ctx;
 	struct i915_ctx_hang_stats *hs;
-	if (engine->id != RCS && ctx_id != DEFAULT_CONTEXT_HANDLE)
-		return ERR_PTR(-EINVAL);
 	ctx = i915_gem_context_lookup(file->driver_priv, ctx_id);
 	if (IS_ERR(ctx))
 		return ctx;

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