Commit 109a5159 authored by Michal Srb's avatar Michal Srb Committed by Dave Airlie

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: default avatarMichal Srb <msrb@suse.com>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent adfb8e51
...@@ -328,6 +328,7 @@ int cirrus_bo_create(struct drm_device *dev, int size, int align, ...@@ -328,6 +328,7 @@ int cirrus_bo_create(struct drm_device *dev, int size, int align,
cirrusbo->gem.driver_private = NULL; cirrusbo->gem.driver_private = NULL;
cirrusbo->bo.bdev = &cirrus->ttm.bdev; 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); cirrus_ttm_placement(cirrusbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM);
......
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