| From | Kamal Mostafa <> | Subject | [PATCH 103/133] drm/cirrus: Invalidate page tables when pinning a BO | Date | Fri, 16 Aug 2013 15:34:05 -0700 |
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3.8.13.7 -stable review patch. If anyone has any objections, please let me know.
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From: Michal Srb <msrb@suse.com>
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 <msrb@suse.com> Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- drivers/gpu/drm/cirrus/cirrus_ttm.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/cirrus/cirrus_ttm.c b/drivers/gpu/drm/cirrus/cirrus_ttm.c index 2ed8cfc..c18faff 100644 --- 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 *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); -- 1.8.1.2
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