On Wed, 31 Oct 2012 15:41:05 -0700, Jesse Barnes <jbarnes at virtuousgeek.org> wrote: > The BIOS shouldn't be touching this memory across suspend/resume, so > just leave it alone. This saves us ~6ms on resume on my T420 (retested > with write combined PTEs). > > v2: change gtt restore default on pre-gen4 (Chris) > move needs_gtt_restore flag into dev_priv > v3: make sure we restore GTT on resume from hibernate (Daniel) > use opregion support as the cutoff for restore from resume (Chris) > > Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org> My troublesome PNV of yore remains happy with this patch, so Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk> Bikeshed: intel_bios_has_opregion(), as we test for this in different locations in different ways. -Chris -- Chris Wilson, Intel Open Source Technology Centre
