From 58ac7e6cb59e637a482a984ed3aff3f6ab876545 Mon Sep 17 00:00:00 2001 From: Egbert Eich Date: Wed, 17 Jul 2013 17:40:56 +0200 Subject: [PATCH] drm/mgag200: Invalidate page tables when pinning a BO When a BO gets pinned the placement may get changed. If the memory is mapped into user space and user space has already accessed the mapped range the page tables are set up but now point to the wrong memory. Set bo.mdev->dev_mapping in mgag200_bo_create() to make sure that ttm_bo_unmap_virtual() called from ttm_bo_handle_move_mem() will take care of this. v2: Don't call ttm_bo_unmap_virtual() in mgag200_bo_pin(), fix comment. Signed-off-by: Egbert Eich Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie --- drivers/gpu/drm/mgag200/mgag200_ttm.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/mgag200/mgag200_ttm.c b/drivers/gpu/drm/mgag200/mgag200_ttm.c index 13878d5de063f..d70e4a92773bf 100644 --- a/drivers/gpu/drm/mgag200/mgag200_ttm.c +++ b/drivers/gpu/drm/mgag200/mgag200_ttm.c @@ -323,6 +323,7 @@ int mgag200_bo_create(struct drm_device *dev, int size, int align, mgabo->gem.driver_private = NULL; mgabo->bo.bdev = &mdev->ttm.bdev; + mgabo->bo.bdev->dev_mapping = dev->dev_mapping; mgag200_ttm_placement(mgabo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM); -- 2.39.5