On Tue, Aug 20, 2013 at 2:41 PM, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote: >> The DERRMR is overwritten by each before use. I thought that was >> self-explanatory. > > The not-so-self-explanatory part is that there is a implicit > synchronisation point in userspace between switching between flips and > scanlines. I was hoping for something that I could just lazily paste into the commit message ;-) While I rattle down my wishlist: Can you please pimp the dummy_load stuff (or something similar) in kms_flip to ensure that the to-be-flipped buffer is busy on the render ring and in a separate test on the blt ring? Thanks, Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx