& and && has been botched. This was likely the cause for some havoc
with various negotiation cases of sppp in the past.
Obtained from: NetBSD (rev 1.13)
MFC after: 1 week
makes the implied assumption there were another 128 bytes of space in
front of the packet handed off to it... which is not the case for
sppp. This could easily end up in corrupting random memory.
This fix is about the same as revs 1.6, 1.8, and 1.9 from our
i4b_ispppsubr.c.
Also fixed IPCP option negotiation to zero out the options when
starting IPCP. Otherwise, if negotiation parameters change between
various IPCP startups, it could happen that old options would still be
requested (this happened if VJ was turned off, and ended up in half
off the link still negotiating for VJ compression).
IMHO, the base system's sppp is now feature-wise up to date with the
one in the i4b part of the tree, so the latter can be disabled.
MFC after: 1 month
o Do not use a special struct to keep track of CPUs we found;
instead, use struct pcpu. This handles all the magic WRT
thread creation (yay!).
o Respect MAXCPU.
o Use the vhpt_base and vhpt_size values to initialize the AP.
o Style fixes.
Note that this commit temporarily breaks SMP configurations.
Previously APs didn't do anything, but they now enter the
scheduler. They hold sched_lock for more than 5 secs though
and cause a panic. That's what I call progress :-)
ia64_pal_base instead of scanning the EFI tables. This way
AP startup code can more easily use the function.
o Initialize ia64_pal_base in ia64_init(). When the PAL code
doesn't need explicit mapping or no PAL code has been found,
ia64_pal_base will be 0.
o Remove some unused global variables.
o Also in ia64_init(), allocate only 1 page for struct pcpu
and remove some Alpha leftovers.
o Initialize pc_pcb in cpu_pcpu_init().
1222 bytes (derived as the maximum that isc-dhcpd uses). This solves
the problem if a bootp/DHCP reply is over 256 bytes in which the
end of the bootp/DHCP reply will not be found and then the reply will
be ignored. This happens when swap and root paths are longish or many
parameters are set.
Reviewed by: imp
Approved by: imp
The following steps are involved:
a) the IP options related to routing (LSRR and SSRR) are processed
as though the router were a host,
b) the other IP options are processed as usual only if the packet
is destined for the router; otherwise they are ignored.
PR: kern/23123
Discussed in: freebsd-hackers
Add fields to md_page for tracking virtual page color, and pv entry
lists.
Fix pmap_track_modified to work for non-kernel pmaps. This is due to
kernel virtual addresses potentially overlapping with userland addresses.
much less magic, fragile, broken. Use ttes rather than sttes.
We still use the replacement scheme used by the original code, which
is pretty cool.
Many crucial bug fixes from: tmm
of sttes. Also removes many differences between this and the other pmaps.
Reserve the kva space used by the openfirmware translations.
Use physical addresses directly in pmap_zero_page and pmap_copy_page, now
that we have the cache line shooting support.
Add code to track the virtual cachability of mapped pages. The dmmu
requires that multiple mappings of the same phsyical address have the
save virtual address bits up to a colour boundary. Violating this
requires all mappings to be mapped uncacheable. We do not yet handle
the case of a badly aliased mapping becoming cachable again.
Many crucial bug fixes from: tmm
the registers so we don't uselessly save them over and over again for
each context switch until another floating point instruction is executed.
Use a non-specific tlb slot for the tsb, which needs to have a locked
entry.
Remove overly verbose traces.
Add macros to atomically increment an integer variable in the data
section and to atomically set a bit in a tte. Note that the latter
does not return the new value.
Rewrite RESUME_SPILLFILL_MAGIC to use more sensical calculations, and
to preserve all alternate globals religiously. Must now be called on
alternate globals.
Defer switching to the kernel stack until inside the syscall, trap,
interrupt wrappers. Splitting the windows is all that's really urgent.
Adapt to new trap types.
Add %xcc where appropriate in order to not use v8 opcodes inadvertantly
(which work fine).
Modify the low level tlb fault handlers to operate on a tsb made up of
ttes, not sttes. This effectively makes the tsb twice as large.
After atomically updating tte bits in memory, also set the bit in the
register that holds the data which will be loaded into the tlb. The
macro returns the old value.
Use the preloaded mmu global which holds the address of the current
user tsb.
Add back a low level protection fault handler instead of just punting
into the vm system. This effectively saves a soft fault per COW fault.
Add a trace to intr_enqueue.
Pass arguments to the trap, interrupt, syscall wrappers in the out
registers instead of some on the stack, some in registers.
Use the preloaded alternate global pcb register.
2. Make trap_pfault more like it is on other architectures.
3. Fix a bug in syscall() which caused system calls with more than
six arguments that are called through the wild card syscall to
have their arguments scrambled. This affected mmap due to the
(bogus) wrapper in libc.
Submitted by: tmm (3)
Add some traces that can be useful but are also very loud.
Use defines for offsets into jmpbuf instead of magic numbers.
Fix a style bug.
Fixup comments.
