On Tue, 30 Oct 2012 18:59:31 +0100, Daniel Vetter <daniel at ffwll.ch> wrote: > On Fri, Oct 26, 2012 at 10:08:38AM -0700, Jesse Barnes wrote: > > The BIOS shouldn't be touching this memory across suspend/resume, so > > just leave it alone. This saves us ~50ms on resume on my T420. > > > > v2: change gtt restore default on pre-gen4 (Chris) > > move needs_gtt_restore flag into dev_priv > > > > Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org> > > I've just realized: GGTT PTEs are stored in stolen mem, and hence not > restored accross S4. How to ruin the day. So we may as just evict everything upon suspend and rebuild as needed? -Chris -- Chris Wilson, Intel Open Source Technology Centre
