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.
Remove the explicit call to aio_proc_rundown() from exit1(), instead AIO
will use at_exit(9).
Add functions at_exec(9), rm_at_exec(9) which function nearly the
same as at_exec(9) and rm_at_exec(9), these functions are called
on behalf of modules at the time of execve(2) after the image
activator has run.
Use a modified version of tegge's suggestion via at_exec(9) to close
an exploitable race in AIO.
Fix SYSCALL_MODULE_HELPER such that it's archetecuterally neutral,
the problem was that one had to pass it a paramater indicating the
number of arguments which were actually the number of "int". Fix
it by using an inline version of the AS macro against the syscall
arguments. (AS should be available globally but we'll get to that
later.)
Add a primative system for dynamically adding kqueue ops, it's really
not as sophisticated as it should be, but I'll discuss with jlemon when
he's around.
specified by the sparc abi. We use numerically higher values for all
internal kernel types.
Remove soft trap types which need to be exposed to userland. They will
move to utrap.h.
their duration. This is still only effective as long as they are
only used in the static kernel. Code in modules may cause instruction
faults which makes these break in different ways anyway.
2. Add a load bearing membar #Sync.
3. Add an inline for demapping an entire context.
Submitted by: tmm (1, 2)
Bloat trapframe with many extra fields so we don't need extra structures.
Use small data types where possible.
Remove second copy of TF_DONE.
Remove mmuframe.
inclusion of VJ compression into sppp.
Now, instead of the need to include this and that and everything plus
the kitchensink in each of those drivers, struct sppp uses struct
slcompress as an opaque structure only referenced by a pointer. The
actual structure is then malloced at initialization time.
While i was at it, also fixed a bug where received VJ packets would only
be recognized if INET6 was defined.
(1) Don't attempt aquire the non-recursive lock sio_lock recursively.
Doing so caused unbounded recursion in some setups. E.g., if DDB,
BREAK_TO_DEBUGGER and WITNESS are configured; if the debugger is
entered using a break, then WITNESS will actually detect the invalid
recursion and will add to it attempting to print a message about it.
(2) Don't use sio_lock before it has been initialized. The old check
(sio_inited != 0) didn't work when sio_inited was boolean because
sio_inited was set too early, and became just wrong when sio_inited
was changed to a tri-state variable in rev.1.348.
Reported and fixed in another way by: fenner (1)
time from the PPP packets sent. This effectively merges rev 1.2 of
the old i4b_ispppsubr.c, with the exception that i eventually ended up
in debugging and fixing it so the idle time is now really
detected. ;-) (The version in i4b simply doesn't work right since it
still accounts for incoming LCP echo packets which it is supposed to
ignore for idle time considerations...)
Obtained from: i4b
MFC after: 1 month
sppp_parms that are needed for the SPPPIO[GS]DEFS ioctl commands.
This allows it to keep struct sppp inside #ifdef _KERNEL (where it
belongs), and prevents userland programs that wish to include
<net/if_sppp.h> from including the earth, the hell, and the universe
before the are able to resolve all the kernel-internal stuff that's in
struct sppp.
Discussed with: hm
MFC after: 1 month
This (effectively) merges rev 1.36 of i4b's old if_spppsubr.c, albeit
in a slightly different manner (we export the timer in millisecond
values as exposed to tick values from/to userland).
Obtained from: i4b
MFC after: 1 month
