drm/vmwgfx: Limit max desktop dimensions to 8Kx8K

This was originally chosen to be an arbitrarily large number.  However,
some user mode may actually try to set a 16Kx16K mode and run into other
issues.

Since 8Kx8K is the current texture limit for Mesa LLVM driver, we will
just use this limit for now.

Cc: <stable@vger.kernel.org> # 4.12.x
Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
index 50be1f034f9efa701f2c6feda57fe28d8cf6d596..5284e8d2f7ba4b0f3c45972c3446800a8debceeb 100644 (file)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
@@ -1640,8 +1640,8 @@ int vmw_kms_stdu_init_display(struct vmw_private *dev_priv)
                 * something arbitrarily large and we will reject any layout
                 * that doesn't fit prim_bb_mem later
                 */
-               dev->mode_config.max_width = 16384;
-               dev->mode_config.max_height = 16384;
+               dev->mode_config.max_width = 8192;
+               dev->mode_config.max_height = 8192;
        }
 
        vmw_kms_create_implicit_placement_property(dev_priv, false);