This is a note to let you know that I've just added the patch titled
drm/i915: Disable decoupled MMIO
to the 4.11-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-decoupled-mmio.patch
and it can be found in the queue-4.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 4c4c565513cca1c53a12956640b5915727431631 Mon Sep 17 00:00:00 2001
From: Kai Chen <kai.chen@xxxxxxxxx>
Date: Tue, 23 May 2017 14:58:11 -0700
Subject: drm/i915: Disable decoupled MMIO
From: Kai Chen <kai.chen@xxxxxxxxx>
commit 4c4c565513cca1c53a12956640b5915727431631 upstream.
The decoupled MMIO feature doesn't work as intended by HW team. Enabling
it with forcewake will only make debugging efforts more difficult, so
let's disable it.
Fixes: 85ee17ebeedd ("drm/i915/bxt: Broxton decoupled MMIO")
Cc: Zhe Wang <zhe1.wang@xxxxxxxxx>
Cc: Praveen Paneri <praveen.paneri@xxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
Cc: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Kai Chen <kai.chen@xxxxxxxxx>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Link: http://patchwork.freedesktop.org/patch/msgid/20170523215812.18328-2-kai.chen@xxxxxxxxx
(cherry picked from commit 0051c10acabb631cfd439eae73289e6e4c39b2b7)
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_pci.c | 1 -
1 file changed, 1 deletion(-)
--- a/drivers/gpu/drm/i915/i915_pci.c
+++ b/drivers/gpu/drm/i915/i915_pci.c
@@ -389,7 +389,6 @@ static const struct intel_device_info in
.has_hw_contexts = 1, \
.has_logical_ring_contexts = 1, \
.has_guc = 1, \
- .has_decoupled_mmio = 1, \
.has_aliasing_ppgtt = 1, \
.has_full_ppgtt = 1, \
.has_full_48bit_ppgtt = 1, \
Patches currently in stable-queue which might be from kai.chen@xxxxxxxxx are
queue-4.11/drm-i915-disable-decoupled-mmio.patch