Hi,
Did testing a while back & reported back to John (not sure this was in public on the list as we had some ping-ping emails beforehand due to some problems of applying the patches). No new version of the series since.
The only comment that I can see is this one [1] which was addressed a couple of days later [2]. If you have any other comments please bring them up publicly.
Digged the mails up in the archive.
First, v2 posting was apparently incomplete, only one of the 8 patches landed in my inbox.
John pointed me to https://github.com/zhjwpku/gsoc/commits/20150720_no_gpu_addr which I've used to test things.
Second, page flipping failed in testing.
cheers, Gerd