This is a note to let you know that I've just added the patch titled
drm/cirrus: Invalidate page tables when pinning a BO
to the 3.10-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-cirrus-invalidate-page-tables-when-pinning-a-bo.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 109a51598869a39fdcec2d49672a9a39b6d89481 Mon Sep 17 00:00:00 2001
From: Michal Srb <[email protected]>
Date: Tue, 6 Aug 2013 15:26:50 +0200
Subject: drm/cirrus: Invalidate page tables when pinning a BO
From: Michal Srb <[email protected]>
commit 109a51598869a39fdcec2d49672a9a39b6d89481 upstream.
This is a cirrus version of Egbert Eich's patch for mgag200.
Without bo.bdev->dev_mapping set, the ttm_bo_unmap_virtual_locked
called from ttm_bo_handle_move_mem returns with no effect. If any
application accessed the memory before it was moved, it will
access wrong memory next time. This causes crashes when changing
resolution down.
Signed-off-by: Michal Srb <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/gpu/drm/cirrus/cirrus_ttm.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/gpu/drm/cirrus/cirrus_ttm.c
+++ b/drivers/gpu/drm/cirrus/cirrus_ttm.c
@@ -353,6 +353,7 @@ int cirrus_bo_create(struct drm_device *
cirrusbo->gem.driver_private = NULL;
cirrusbo->bo.bdev = &cirrus->ttm.bdev;
+ cirrusbo->bo.bdev->dev_mapping = dev->dev_mapping;
cirrus_ttm_placement(cirrusbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM);
Patches currently in stable-queue which might be from [email protected] are
queue-3.10/drm-cirrus-invalidate-page-tables-when-pinning-a-bo.patch
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