drm/ttm: Allow system memory as a busy placement.
This is needed to fix a vmwgfx memory usage bug.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 8036b6e..1a3e909 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -943,6 +943,14 @@
ttm_flag_masked(&cur_flags, placement->busy_placement[i],
~TTM_PL_MASK_MEMTYPE);
+
+ if (mem_type == TTM_PL_SYSTEM) {
+ mem->mem_type = mem_type;
+ mem->placement = cur_flags;
+ mem->mm_node = NULL;
+ return 0;
+ }
+
ret = ttm_bo_mem_force_space(bo, mem_type, placement, mem,
interruptible, no_wait);
if (ret == 0 && mem->mm_node) {