https://bugs.freedesktop.org/show_bug.cgi?id=82050
--- Comment #10 from Andy Furniss adf.lists@gmail.com --- (In reply to comment #9)
Created attachment 104475 [details] [review] Flush HDP cache via the ring on SI
Does this patch help for the kernel regression?
Though this seems to make some piglit test results unstable...
There is no difference with this.
FWIW I found another regression with this kernel that is caused by the same commit.
Maybe regression is the wrong word, as there was already an issue, just it's worse now.
I will file a separate bug in time (was planning to do new xorg and retest first) but in summary -
Unigine Valley always did have some 1/2 to 1 sec pauses ever since I could run it, first on HD4890 and now radeonsi R9 270X.
Since this kernel commit they are 2 to 4 times longer - also unchanged by patch.
Strangely, if I use ffmpegs x11 grab to make a recording @ 30fps they become short again.