vmwgfx: Implement a proper GMR eviction mechanism

Use Ben's new range manager hooks to implement a manager for
GMRs that manages ids rather than ranges.
This means we can use the standard TTM code for binding, unbinding and
eviction.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
index e7304188a784..41d9a5b73c03 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
@@ -612,7 +612,6 @@ int vmw_dmabuf_to_start_of_vram(struct vmw_private *vmw_priv,
 {
         struct ttm_buffer_object *bo = &vmw_bo->base;
         struct ttm_placement ne_placement = vmw_vram_ne_placement;
-        struct drm_mm_node *mm_node;
         int ret = 0;
 
         ne_placement.lpfn = bo->num_pages;
@@ -626,9 +625,9 @@ int vmw_dmabuf_to_start_of_vram(struct vmw_private *vmw_priv,
         if (unlikely(ret != 0))
                 goto err_unlock;
 
-        mm_node = bo->mem.mm_node;
         if (bo->mem.mem_type == TTM_PL_VRAM &&
-            mm_node->start < bo->num_pages)
+            bo->mem.start < bo->num_pages &&
+            bo->mem.start > 0)
                 (void) ttm_bo_validate(bo, &vmw_sys_placement, false,
                                        false, false);