diff --git a/drivers/gpu/drm/i915/i915_vgpu.c b/drivers/gpu/drm/i915/i915_vgpu.c
index f1ad4fbb5ba72..d0abfd08a01c3 100644
--- a/drivers/gpu/drm/i915/i915_vgpu.c
+++ b/drivers/gpu/drm/i915/i915_vgpu.c
@@ -122,7 +122,7 @@ static int vgt_balloon_space(struct i915_ggtt *ggtt,
 {
 	unsigned long size = end - start;
 
-	if (start <= end)
+	if (start >= end)
 		return -EINVAL;
 
 	DRM_INFO("balloon space: range [ 0x%lx - 0x%lx ] %lu KiB.\n",