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authorMichal Srb <msrb@suse.com>2013-08-06 15:26:50 +0200
committerDave Airlie <airlied@redhat.com>2013-08-07 10:00:45 +1000
commit109a51598869a39fdcec2d49672a9a39b6d89481 (patch)
tree33cddbdca7e436510c6e453b55d64f0b0006be47 /drivers/gpu/drm/cirrus/cirrus_ttm.c
parentadfb8e51332153016857194b85309150ac560286 (diff)
drm/cirrus: Invalidate page tables when pinning a BO
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 <msrb@suse.com> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/cirrus/cirrus_ttm.c')
-rw-r--r--drivers/gpu/drm/cirrus/cirrus_ttm.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/cirrus/cirrus_ttm.c b/drivers/gpu/drm/cirrus/cirrus_ttm.c
index 0047012045c2..69fd8f1ac8df 100644
--- a/drivers/gpu/drm/cirrus/cirrus_ttm.c
+++ b/drivers/gpu/drm/cirrus/cirrus_ttm.c
@@ -328,6 +328,7 @@ int cirrus_bo_create(struct drm_device *dev, int size, int align,
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);