drm/nv50: enable 4KiB pages for small vram allocations

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.c b/drivers/gpu/drm/nouveau/nouveau_mem.c
index 4d2d3de..3a531d5 100644
--- a/drivers/gpu/drm/nouveau/nouveau_mem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_mem.c
@@ -715,7 +715,8 @@
 	struct nouveau_vram *vram;
 	int ret;
 
-	ret = nv50_vram_new(dev, mem->num_pages << PAGE_SHIFT, 65536, 0,
+	ret = nv50_vram_new(dev, mem->num_pages << PAGE_SHIFT,
+			    mem->page_alignment << PAGE_SHIFT, 0,
 			    (nvbo->tile_flags >> 8) & 0x7f, &vram);
 	if (ret)
 		return ret;