AMDGPU_VM_PTB
if (level != AMDGPU_VM_PTB) {
if (cursor.level != AMDGPU_VM_PTB) {
case AMDGPU_VM_PTB:
else if (level != AMDGPU_VM_PTB)
else if (level != AMDGPU_VM_PTB)
if (level != AMDGPU_VM_PTB)
if (cursor.level < AMDGPU_VM_PTB) {