Just before removing the vector page mapping, switch to the kernel
pmap's L1/vector page mapping so as not to pull the rug out from
under ourselves.
To prevent the stale L1/vector page mapping from being restored by
cpu_switch, replace the relevant fields of the dying process' pcb
with those of lwp0's pcb.
Don't write out dummy extended partitions for unused ares in the extended
partition.
Add some more comments - I write this and I couldn't remember how it worked.
mace devices to their own mace/ directory. Alter conf/files.sgimips to
reflect this change in a sane manner (i.e., pull in dev/files.dev and
mace/files.mace when appropriate).
At the same time, allow crime_intr_establish() to fall through to
mace_intr_establish(). mace devices now call cpu_intr_establish().
While here, do some cosmetic changes:
* sort PCMCIA network interfaces section.
* ksyms is not a wscons related pseudo device, so move it to misc.
* line up scif at shb line, and move related options to be after it.
* move all device-specific bitbanging to the device drivers in question --
i.e., the ip32 init code doesn't access the CRIME registers directly but
instead trusts the CRIME driver to DTRT. machdep.c is cleaner thereby.
* introduce int.c, which handles the interrupt-controller goo formerly
in ip2x.c.
* unify the CPU interrupt handler, with CRIME, INT2, and the various timer
handlers hooked in via pointers in the platform struct.
* eliminate ip2x.c and ip32.c. After the interrupt handler cleanup, the
actual platform-dependent code was so minimal (rev identification, mask level
initialization) that it made sense to move it into machdep.c
* "#ifdef DEBUG printf("foo"); #endif" becomes aprint_debug.
Tested on my ip22 and ip32. Discussed with pooka@, rafal@.
Remove the vestigal sysbeep device and replace it with the same kind of
mechanism that pckbd(4) uses to find the bell, which is just as ugly, but
more standard. Adapt beep(4) to the new world (though I'm not sure it
deserves to live).
