drm/vmwgfx: Fix Ubuntu 17.10 Wayland black screen issue

commit cef75036c40408ba3bc308bcb00a3d440da713fc upstream.

This is an extension of Commit 7c20d213dd3c ("drm/vmwgfx: Work
around mode set failure in 2D VMs")

With Wayland desktop and atomic mode set, during the mode setting
process there is a moment when two framebuffer sized surfaces
are being pinned.  This was not an issue with Xorg.

Since this only happens during a mode change, there should be no
performance impact by increasing allowable mem_size.

Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index f3f31f9..be3971b 100644 (file)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -708,7 +708,7 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
                 * allocation taken by fbdev
                 */
                if (!(dev_priv->capabilities & SVGA_CAP_3D))
-                       mem_size *= 2;
+                       mem_size *= 3;
 
                dev_priv->max_mob_pages = mem_size * 1024 / PAGE_SIZE;
                dev_priv->prim_bb_mem =