Re: [RFC] drm/i915: Android native sync support

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On 01/22/2015 02:04 PM, Damien Lespiau wrote:
On Thu, Jan 22, 2015 at 01:41:48PM +0000, Tvrtko Ursulin wrote:
@@ -718,7 +718,7 @@ struct drm_i915_gem_execbuffer2 {
  #define I915_EXEC_CONSTANTS_REL_SURFACE (2<<6) /* gen4/5 only */
  	__u64 flags;
  	__u64 rsvd1; /* now used for context info */
-	__u64 rsvd2;
+	__u64 rsvd2; /* now used for fence fd */
If we are going to use this slot for fence fd, may as well make it
supply both before/after.

Not sure what you mean by before/after?

In the future it will take in the input fence fd and return the output fence
if that's what you mean.

BTW, couldn't we take 32bits here and leave 32bits reserved?

I guess so. Any ideas why the same wasn't done with rsvd1 - I see only 32-bits are used for context id there?

Regards,

Tvrtko


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