diff --git a/drivers/gpu/nvgpu/gp10b/mm_gp10b.c b/drivers/gpu/nvgpu/gp10b/mm_gp10b.c
index 654495348..0c76abb52 100644
--- a/drivers/gpu/nvgpu/gp10b/mm_gp10b.c
+++ b/drivers/gpu/nvgpu/gp10b/mm_gp10b.c
@@ -75,6 +75,7 @@ static int gb10b_init_bar2_vm(struct gk20a *g)
 	mm->bar2.aperture_size = 32 << 20;
 	gk20a_dbg_info("bar2 vm size = 0x%x", mm->bar2.aperture_size);
 	gk20a_init_vm(mm, vm, big_page_size, SZ_4K,
+		mm->bar2.aperture_size - SZ_4K,
 		mm->bar2.aperture_size, false, "bar2");
 
 	/* allocate instance mem for bar2 */