This is a note to let you know that I've just added the patch titled
drm/i915: Disable RCS flips on Ivybridge
to the 3.16-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-disable-rcs-flips-on-ivybridge.patch
and it can be found in the queue-3.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 2a92d5bca1999b69c78f3c3e97b5484985b094b9 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Date: Tue, 8 Jul 2014 10:40:29 +0100
Subject: drm/i915: Disable RCS flips on Ivybridge
From: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
commit 2a92d5bca1999b69c78f3c3e97b5484985b094b9 upstream.
We currently see random GPU hangs when using RCS flips with multiple
pipes on Ivybridge. Now that we have mmio flips, we can fairly cheaply
fallback to using CPU driven flips instead.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77104
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_display.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9294,6 +9294,8 @@ static int intel_crtc_page_flip(struct d
if (IS_VALLEYVIEW(dev)) {
ring = &dev_priv->ring[BCS];
+ } else if (IS_IVYBRIDGE(dev)) {
+ ring = &dev_priv->ring[BCS];
} else if (INTEL_INFO(dev)->gen >= 7) {
ring = obj->ring;
if (ring == NULL || ring->id != RCS)
Patches currently in stable-queue which might be from chris@xxxxxxxxxxxxxxxxxx are
queue-3.16/drm-i915-disable-rcs-flips-on-ivybridge.patch
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