[$] The push to save Itanium

It is (relatively) easy to add code to the kernel; it tends to be much
harder to remove that code later. The most recent example of this dynamic
can be seen in the story of the ia64 ("Itanium") architecture, support for
which was removed during the 6.7 merge window. That removal has left a
small group of dedicated ia64 users unhappy and clinging to a faint hope
that this support could return in a year's time.