This is a note to let you know that I've just added the patch titled
drm/i915: Don't complain about stolen conflicts on gen3
to the 3.18-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-don-t-complain-about-stolen-conflicts-on-gen3.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0b6d24c01932db99fc95304235e751e7f7625c41 Mon Sep 17 00:00:00 2001
From: Daniel Vetter <daniel.vetter@xxxxxxxx>
Date: Fri, 11 Apr 2014 15:55:17 +0200
Subject: drm/i915: Don't complain about stolen conflicts on gen3
From: Daniel Vetter <daniel.vetter@xxxxxxxx>
commit 0b6d24c01932db99fc95304235e751e7f7625c41 upstream.
Apparently stuff works that way on those machines.
I agree with Chris' concern that this is a bit risky but imo worth a
shot in -next just for fun. Afaics all these machines have the pci
resources allocated like that by the BIOS, so I suspect that it's all
ok.
This regression goes back to
commit eaba1b8f3379b5d100bd146b9a41d28348bdfd09
Author: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Date: Thu Jul 4 12:28:35 2013 +0100
drm/i915: Verify that our stolen memory doesn't conflict
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=76983
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=71031
Tested-by: lu hua <huax.lu@xxxxxxxxx>
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Reviewed-by: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
Tested-by: Paul Menzel <paulepanter@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_gem_stolen.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -137,7 +137,11 @@ static unsigned long i915_stolen_to_phys
r = devm_request_mem_region(dev->dev, base + 1,
dev_priv->gtt.stolen_size - 1,
"Graphics Stolen Memory");
- if (r == NULL) {
+ /*
+ * GEN3 firmware likes to smash pci bridges into the stolen
+ * range. Apparently this works.
+ */
+ if (r == NULL && !IS_GEN3(dev)) {
DRM_ERROR("conflict detected with stolen region: [0x%08x - 0x%08x]\n",
base, base + (uint32_t)dev_priv->gtt.stolen_size);
base = 0;
Patches currently in stable-queue which might be from daniel.vetter@xxxxxxxx are
queue-3.18/drm-i915-resume-mst-after-reading-back-hw-state.patch
queue-3.18/drm-i915-only-warn-the-first-time-we-attempt-to-mmio-whilst-suspended.patch
queue-3.18/drm-i915-disallow-pin-ioctl-completely-for-kms-drivers.patch
queue-3.18/drm-i915-don-t-complain-about-stolen-conflicts-on-gen3.patch
queue-3.18/drm-fb_helper-move-deferred-fb-checking-into-restore-mode-v2.patch
queue-3.18/drm-dp-mst-remove-branches-before-dropping-the-reference.patch
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