Chris Wilson 7365af4980 drm/i915: Flush the PTEs after updating them before suspend ...

commit 91e5649930 upstream.

As we use WC updates of the PTE, we are responsible for notifying the
hardware when to flush its TLBs. Do so after we zap all the PTEs before
suspend (and the BIOS tries to read our GTT).

Fixes a regression from

commit 828c79087c
Author: Ben Widawsky <benjamin.widawsky@intel.com>
Date:   Wed Oct 16 09:21:30 2013 -0700

    drm/i915: Disable GGTT PTEs on GEN6+ suspend

that survived and continue to cause harm even after

commit e568af1c62
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Wed Mar 26 20:08:20 2014 +0100

    drm/i915: Undo gtt scratch pte unmapping again

v2: Trivial rebase.
v3: Fixes requires pointer dances.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=82340
Tested-by: ming.yao@intel.com
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Todd Previte <tprevite@gmail.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2014-10-09 12:21:26 -07:00

..

drm

drm/i915: Flush the PTEs after updating them before suspend

2014-10-09 12:21:26 -07:00

host1x

gpu: host1x: handle the correct # of syncpt regs

2014-06-07 10:28:09 -07:00

vga

vgaswitcheroo: add vga_switcheroo_fini_domain_pm_ops

2014-10-05 14:52:22 -07:00

Makefile

gpu: host1x: Add host1x driver

2013-04-22 12:32:40 +02:00