pmap_sid
if (gr[_REG_PCSQH] != pmap_sid(pmap, gr[_REG_PCOQH])) {
if (gr[_REG_PCSQT] != pmap_sid(pmap, gr[_REG_PCOQT])) {
tf->tf_iisq_head = pmap_sid(pmap, gr[_REG_PCOQH]);
tf->tf_iisq_tail = pmap_sid(pmap, gr[_REG_PCOQT]);