Re: [PATCH 21/38] drm/i915: Fix I915_EXEC_RING_MASK

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On 01/03/2019 14:03, Chris Wilson wrote:
This was supposed to be a mask of all known rings, but it is being used
by execbuffer to filter out invalid rings, and so is instead mapping high
unused values onto valid rings. Instead of a mask of all known rings,
we need it to be the mask of all possible rings.

Fixes: 549f7365820a ("drm/i915: Enable SandyBridge blitter ring")
Fixes: de1add360522 ("drm/i915: Decouple execbuf uAPI from internal implementation")
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # v4.6+
---
  include/uapi/drm/i915_drm.h | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index 60cbb2e4f140..4e59cc87527b 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -1004,7 +1004,7 @@ struct drm_i915_gem_execbuffer2 {
  	 * struct drm_i915_gem_exec_fence *fences.
  	 */
  	__u64 cliprects_ptr;
-#define I915_EXEC_RING_MASK              (7<<0)
+#define I915_EXEC_RING_MASK              (0x3f)
  #define I915_EXEC_DEFAULT                (0<<0)
  #define I915_EXEC_RENDER                 (1<<0)
  #define I915_EXEC_BSD                    (2<<0)


Easy pickings first.

Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>

Regards,

Tvrtko
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