ALPHA_INTR_MPSAFE
if ((flags & ALPHA_INTR_MPSAFE) == 0) {
if (flags & ALPHA_INTR_MPSAFE)
if (flags & ALPHA_INTR_MPSAFE) {
flags |= ALPHA_INTR_MPSAFE;
flags &= ~ALPHA_INTR_MPSAFE;