On Tue, Dec 8, 2015 at 3:49 AM, Daniel Vetter <daniel.vetter at ffwll.ch> wrote: > We want this for consistency with existing page_flip semantics. > > Since this spurred quite a discussion on IRC also document why we > reject even generation when the pipe is off: It's not that it's hard
event generation? > to implement, but userspace has a track recording proofing that it's has a track record which proves that it's > way too easy to accidentally abuse and cause havoc. We want to make > sure userspace doesn't get away with that. > > v2: Somehow thought we do reject events already, but that code only > existed in my imagination ... Also suggestions from Thierry. > > Cc: Daniel Stone <daniels at collabora.com> > Cc: Ville Syrjälä <ville.syrjala at linux.intel.com> > Cc: Thierry Reding <thierry.reding at gmail.com> > Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch> > --- > drivers/gpu/drm/drm_atomic.c | 16 ++++++++++++++++ > drivers/gpu/drm/drm_atomic_helper.c | 9 +++++++++ > include/drm/drm_crtc.h | 3 ++- > 3 files changed, 27 insertions(+), 1 deletion(-)
