drm/ast: invalidate page tables when pinning a BO



same fix as cirrus and mgag200.

Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

parent ecaac1c8

drivers/gpu/drm/ast/ast_ttm.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -323,6 +323,7 @@ int ast_bo_create(struct drm_device *dev, int size, int align,

		astbo->gem.driver_private = NULL;
		astbo->bo.bdev = &ast->ttm.bdev;
		astbo->bo.bdev->dev_mapping = dev->dev_mapping;

		ast_ttm_placement(astbo, TTM_PL_FLAG_VRAM \| TTM_PL_FLAG_SYSTEM);