Four drm_mm_node are used to reserve guest ggtt space, but some of them
may aren't initialized and used in intel_vgt_balloon(), so these unused
drm_mm_node couldn't be removed through drm_mm_remove_node().
Fixes: ff8f797557c7("drm/i915: return the correct usable aperture size under gvt environment")
Signed-off-by: Xiong Zhang <xiong.y.zhang@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_vgpu.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_vgpu.c b/drivers/gpu/drm/i915/i915_vgpu.c
index 5fe9f3f..7545686 100644
--- a/drivers/gpu/drm/i915/i915_vgpu.c
+++ b/drivers/gpu/drm/i915/i915_vgpu.c
@@ -100,6 +100,9 @@ static struct _balloon_info_ bl_info;
static void vgt_deballoon_space(struct i915_ggtt *ggtt,
struct drm_mm_node *node)
{
+ if (!node->allocated)
+ return;
+
DRM_DEBUG_DRIVER("deballoon space: range [0x%llx - 0x%llx] %llu KiB.\n",
node->start,
node->start + node->size,
--
2.7.4
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