page_alloc() function from the slab_zalloc() function. This allows us
to unconditionally call uz_allocf().
- In page_alloc() cleanup the boot_pages logic some. Previously memory from
this cache that was not used by the time the system started was left in
the cache and never used. Typically this wasn't more than a few pages,
but now we will use this cache so long as memory is available.
by accepting the user supplied flags directly. Previously this was not
done so that flags for the same field would not be defined in two
different files. Add comments in each header instructing future
developers on how now to shoot their feet.
- Fix a test for !OFFPAGE which should have been a test for HASH. This would
have caused a panic if we had ever destructed a malloc zone. This also
opens up the possibility that other zones could use the vsetobj() method
rather than a hash.
but for CPL != 0. For some reason yet unknown it is possible for the
CPL to be 2. This would previously be counted as kernel mode, which
resulted in nasty panics. By changing the test it is now treated as
user mode, which is more correct. We still need to figure out how it
is possible that the privilege level can be 2 (or 1 for that matter),
because it's not used by us. We only use 3 (user mode) and 0 (kernel
mode).
don't cache as many items.
- Introduce the bucket_alloc(), bucket_free() functions to wrap bucket
allocation. These functions select the appropriate bucket zone to
allocate from or free to.
- Rename ub_ptr to ub_cnt to reflect a change in its use. ub_cnt now reflects
the count of free items in the bucket. This gets rid of many unnatural
subtractions by 1 throughout the code.
- Add ub_entries which reflects the number of entries possibly held in a
bucket.
IF_HANDOFF() does it for us behind the scenes. Remove the extra call
to re_start() otherwise we try to transmit twice.
In re_encap(), fix the code that guards against consuming too many
descriptors in the TX ring so that it actually works. With the
new 8169S chip, I was able to hit a corner case that drained the
free descriptor count all the way to 0. This is not supposed to
be possible.
reserved bits in the port that must be zero are 24:30, not 20:30. Bits
16:23 are used to set the bus number. This meant that when we tested for
config mechanism #1, if the previous PCI configuration transaction sent
used a bus number greater than 15, one of the bits in 20:23 would be
non-zero and we would fail to use config mechanism #1 and thus fail to see
that PCI existed on the machine at all.
Obtained from: Shanley's PCI System Architecture book
Tested by: des
Proxied through: njl
archaic at this point in time. Pretend nobody runs FreeBSD 1.x anymore
in order to not confuse people needlessly.
Laplink support probably doesn't even work at this point in time anyway...
user mode. This goes with rev.1.468 of machdep.c which changed the gates
for these traps to interrupt gates. Having the interrupts disabled for
these traps from user mode is just an unwanted side effect.
This fixes at least 1 case of "panic: absolutely cannot call
smp_ipi_shootdown with interrupts already disabled". Too much code was
run with interrupts disabled, and it sometimes hit a sanity check.
Fix verified by: deischen
variable. The implementation is based upon the patch sent to
arch@, but modified to be compatible with NetBSD. The modifier
that does a reverse sort has been dropped for now, but the
ability to add one later has been preserved.
sending an ICMP packet doesn't cause a panic. A better solution is needed;
possibly defering the transmit to a dedicated thread.
Observed by: "Aaron Wohl" <freebsd@soith.com>
