On 2022-09-05 15:37, Hans de Goede wrote: > The gma500 page-flip code kinda assume that userspace never queues more > then 1 vblank event. So basically it assume that userspace does: > > - page-flip > - wait for vblank event > - render > - page-flip > - etc. > > In the case where userspace would submit 2 page-flips without waiting > for the first to finish, the current code will just overwrite > gma_crtc->page_flip_event with the event from the 2nd page-flip. This cannot happen. Common code returns -EBUSY for an attempt to submit a page flip while another one is still pending. -- Earthling Michel Dänzer | https://redhat.com Libre software enthusiast | Mesa and Xwayland developer
