an extern for 'struct platform platform' further down this file anyway,
and this would have declared a 'platform' variable in any userland code
including this file.
half-baked and resulted in one superfluous ASID bump if new pmaps
are created when pmap_asid_generation > 0. Need to initialize pmap
fields correctly.
Yet, this possibly might not be the perfect solution. If one
process bumped pmap_asid_generation _after_ a new pmap was created
and initialized with then-current pmap_asid_generation value. In
that case, the new pmap would have another (superfluous) ASID bump
when 2nd (not 1st) CPU tick is assigned. I'm not sure if this case
would happen.
Have pmap_max_asid variable to hold the maximum number of ASID
(TLBpid) supported by processor anticipating the possible runtime
cost of ((CPUISMIPS3)? MIPS3_TLB_NUM_ASIDS : MIPS1_TLB_NUM_PIDS).
ALPHA; mips1_TBIA, mips1_TBIAP, mips1_TBIS.
- Make sure TBIA and TBIAP ops to have an argument for the size of TLB
which varies across even for MIPS1 implementations.
- Nuke the unused cpu_isa field from processor personality list.
- XXX XXX XXX
it's less-than-optimal and likely a mistake to have TLBUpdate().
It's costy to try to invalidate a single TLB entry whenver a certain
PTE is going to be modified by traversing the entire TLB looking
for the modified PTE because the PTE in question is not in TLB in
most cases. ASID bump could do the invalidation smartly. Solution
is planned for now.
was used for debugg'n purposes which only make senses on particular
hardware configurations and has never been intended to extend pagesize
of NetBSD/mips.
- Change comments on cpu_startup() so as what it does (XXX found mostly
common across ports).
- Retain UNIX heritage of /* Good {morning,afternoon,evening,night} */.
* Remove the casts to vaddr_t from the round_page() and trunc_page() macros to
make them type-generic, which is necessary i.e. to operate on file offsets
without truncating them.
* In due course, cast pointer arguments to these macros to an appropriate
integral type (paddr_t, vaddr_t).
Originally done by Chuck Silvers, updated by myself.
Some PCI soundcards don't seem to use the generic gameport function with
interface 0x10 used here, but have either an own BAR dedicated to this
(i.e. Sonic Vibes or ESS Solo-1) or specify their own device (see
PCI_PRODUCT_CREATIVELABS_SBJOY in sys/dev/pci/pcidevs.h).
Probably these use a similar simple sheme and adding a frontend for them would
be trivial, but I don't own any of these cards, so I didn't.
cpu_fork() mistakenly created processes forked by proc0, including
kthreads, in splhigh condition, because [1] proc0's PCB was zero
cleared during initialization, and [2] value 0 in status register
field made processes to have splhigh condition when CPU tick was
assigned for them. This mostly doesn't matter as forked processes
dive immediately into user mode through proc_trampoline code path,
however, kthreads never do that and remain in splhigh.
Reported by Ethan Solomita <ethan@geocast.com>.
timeout()/untimeout() API:
- Clients supply callout handle storage, thus eliminating problems of
resource allocation.
- Insertion and removal of callouts is constant time, important as
this facility is used quite a lot in the kernel.
The old timeout()/untimeout() API has been removed from the kernel.
timeout()/untimeout() API:
- Clients supply callout handle storage, thus eliminating problems of
resource allocation.
- Insertion and removal of callouts is constant time, important as
this facility is used quite a lot in the kernel.
The old timeout()/untimeout() API has been removed from the kernel.
simonb