SPEC_CTRL_DUMMY_IBPB
41: testq $SPEC_CTRL_DUMMY_IBPB,%rdx ; \
ASSYM(SPEC_CTRL_DUMMY_IBPB, SPEC_CTRL_DUMMY_IBPB);
SPEC_CTRL_DUMMY_ENABLE | SPEC_CTRL_DUMMY_IBPB;
spec_ctrl |= SPEC_CTRL_DUMMY_IBPB;