Hi, testing on "simulated" pre-DCE4 radeon hw (via setting the module parameter radeon.use_pflipirq=0 to avoid use of pflip irqs) showed we need some adjustments on top of Michel's page_flip_target patches on these old asics.
Patch 2/2: Essentially disabling the ability to flip anywhere in vblank on pre-DCE4, either via hw programming or via software for pre-AVIVO. Patch 1/2: Also some small refinement i noticed was possible for that old pageflip completion path with some functionality we added a couple of releases ago. So these should go into drm-next for Linux 4.9. thanks, -mario
