Commit Graph

805 Commits

Author SHA1 Message Date
Jens Schweikhardt
9d5abbddbf Correct typos, mostly s/ a / an / where appropriate. Some whitespace cleanup,
especially in troff files.
2003-01-01 18:49:04 +00:00
Robert Watson
a95f262c6b Synchronize to kern/syscalls.master:1.139.
Obtained from:	TrustedBSD Project
2002-12-29 20:33:26 +00:00
Tim J. Robbins
b30a7779d4 MB_LEN_MAX is not MD, move it to the MI limits.h. 2002-12-22 06:38:45 +00:00
Marcel Moolenaar
d8e7d462eb More MFp4: DIG64 structures. 2002-12-18 18:52:20 +00:00
Marcel Moolenaar
91c71b46ed Export the physical address of the RSDP to userland by means
of the `machdep.acpi_root' sysctl. This is required on ia64
because the root pointer hardly ever, if at all, lives in the
first MB of memory and also because scanning the first MB of
memory can cause machine checks.
This provides a save and reliable way for ACPI tools to work
with the tables if ACPI support is present in the kernel. On
ia64 ACPI is non-optional.
2002-12-18 08:47:07 +00:00
Marcel Moolenaar
1aa83d38bc Check that the dump device is large enough. Otherwise we could
end up with a dump offset that's smaller than the start of the
dump device and either clobber data in preceding partitions or
try to write beyond the end of the medium (unsigned wrap).

Implement legacy behaviour to never write to the first 64KB as
that is where metadata (ie disklabels) may reside.
2002-12-17 02:51:56 +00:00
Marcel Moolenaar
722d8e49a9 Regen: swapoff 2002-12-16 00:49:36 +00:00
Marcel Moolenaar
3f60ecab4e Change swapoff from MNOPROTO to UNIMPL. The former doesn't work. 2002-12-16 00:48:52 +00:00
Matthew Dillon
92da00bb24 This is David Schultz's swapoff code which I am finally able to commit.
This should be considered highly experimental for the moment.

Submitted by:	David Schultz <dschultz@uclink.Berkeley.EDU>
MFC after:	3 weeks
2002-12-15 19:17:57 +00:00
Alfred Perlstein
d1e405c5ce SCARGS removal take II. 2002-12-14 01:56:26 +00:00
Alfred Perlstein
bc9e75d7ca Backout removal SCARGS, the code freeze is only "selectively" over. 2002-12-13 22:41:47 +00:00
Alfred Perlstein
0bbe7292e1 Remove SCARGS.
Reviewed by: md5
2002-12-13 22:27:25 +00:00
Julian Elischer
696058c3c5 Unbreak the KSE code. Keep track of zobie threads using the Per-CPU storage
during the context switch. Rearrange thread cleanups
to avoid problems with Giant. Clean threads when freed or
when recycled.

Approved by:	re (jhb)
2002-12-10 02:33:45 +00:00
Marcel Moolenaar
7b54e1ca53 Use one of the bi_spare entries for the DIG64 HCDP table address.
The HCDP table is one (non-proprietary) way for the platform to
inform the OS about headless operation. This field would normally
hold the address as can be found by scanning the EFI system table,
which we also pass to the kernel. The apparent duplication allows
us to synthesize a HCDP table in the loader by whatever means we
can think of, including relocating the platform table into pre-
mapped address space. In short: it gives us more freedom.

Approved by: re (blanket)
2002-12-08 20:32:56 +00:00
Marcel Moolenaar
c0fabbfb90 Disable SMP. It reduces the chance that the kernel boots. On top
of that, there's some nasty process corruption when running with
SMP.

Note that this was already in effect for the 5.0-RC1 kernels in
the form of a local patch.

Approved by: re (blanket)
2002-12-08 20:14:04 +00:00
Alan Cox
8e7ea1fc7d MFi386
Hold the page queues lock around vm_page_unhold() in vunmapbuf().

Approved by:	re (blanket)
2002-12-02 01:12:05 +00:00
Marcel Moolenaar
4ea25f94be Implement bus_space_subregion(). Identical to i386.
Approved by: re (carte blanc)
2002-11-29 20:14:03 +00:00
Marcel Moolenaar
ddc6d86ca3 Better handle sparse physical memory: Don't use the address range
as a measure for available memory to scale the VHPT. Instead, use
the previously determined Maxmem.

Approved by: re (carte blanc)
2002-11-29 20:10:21 +00:00
Marcel Moolenaar
53efb27fc5 MFp4:
Add function map_port_space() to map the memory mapped I/O port
range as uncacheable virtual memory and call it prior to probing
for a console. This removes the dependency on the loader to have
done this for us. Note that this change does not include doing
the same for APs.

Approved by: re (blanket)
2002-11-24 20:15:08 +00:00
Marcel Moolenaar
26cd294128 Fix comparison that caused a 1-off bug. This appeared harmless for
the kernel itself, but SAL on Itanium2 machines spontaneously
rebooted the machine.

Approved by: re (blanket)
Submitted by: Arun Sharma <adsharma@unix-os.sc.intel.com>
2002-11-24 20:07:23 +00:00
Maxime Henrion
b19d9defef Under certain circumstances, we were calling kmem_free() from
i386 cpu_thread_exit().  This resulted in a panic with WITNESS
since we need to hold Giant to call kmem_free(), and we weren't
helding it anymore in cpu_thread_exit().  We now do this from a
new MD function, cpu_thread_dtor(), called by thread_dtor().

Approved by:	re@
Suggested by:	jhb
2002-11-22 23:57:02 +00:00
Alan Cox
779df20df2 MFi386 r1.369
- Clear the PG_WRITEABLE flag in pmap_page_protect() if write access is
   being removed.  Return immediately if write access is being removed and
   PG_WRITEABLE is already clear.
2002-11-17 21:48:42 +00:00
Daniel Eischen
84b427ce23 Regenerate after adding syscalls. 2002-11-16 23:48:14 +00:00
Daniel Eischen
a4b04278f0 Add *context() syscalls to ia64 32-bit compatability table as requested
in kern/syscalls.master.
2002-11-16 15:15:17 +00:00
Daniel Eischen
2be05b70c9 Add getcontext, setcontext, and swapcontext as system calls.
Previously these were libc functions but were requested to
be made into system calls for atomicity and to coalesce what
might be two entrances into the kernel (signal mask setting
and floating point trap) into one.

A few style nits and comments from bde are also included.

Tested on alpha by: gallatin
2002-11-16 06:35:53 +00:00
Peter Wemm
cdf5e9ccb6 Do not assume that time_t is an int.
Approved by:	re (jhb)
2002-11-15 22:36:57 +00:00
Peter Wemm
70285c3e5f Test the water. Make time_t long (64 bit) on ia64 since we do not have
to worry about ABI vs released systems yet.  This is mostly transparent
since there is no significant exposure in the syscall interface.  The
things that go wrong are mostly userland stuff - time(&intvariable).

Reviewed by:	dfr, marcel
Approved by:	re (jhb)
2002-11-15 22:35:34 +00:00
Alan Cox
eea85e9bb6 Move pmap_collect() out of the machine-dependent code, rename it
to reflect its new location, and add page queue and flag locking.

Notes: (1) alpha, i386, and ia64 had identical implementations
of pmap_collect() in terms of machine-independent interfaces;
(2) sparc64 doesn't require it; (3) powerpc had it as a TODO.
2002-11-13 05:39:58 +00:00
Marcel Moolenaar
7aa65edc75 ia64 ABI breaker:
Don't force 16-byte alignment at run-time. Do it at compile-time.
This saves us the pointer fiddling by the setjmp functions and
reduces complexity. While here, increase the jmp_buf by 16 bytes
to an even 512 bytes. Coincidentally, due to the way alignment
was handled prior to this change, the jmp_buf has not changed in
size, but only in how the space is used. Prior to this change
the 16 bytes were reserved for enforcing alignment; now they are
reserved by us for future extensions.
Therefore, this ABI breaker is relatively save: the failure is
always an alignment trap.
2002-11-11 08:11:44 +00:00
Alan Cox
6372d61e3e - Clear the page's PG_WRITEABLE flag in the i386's pmap_changebit()
if we're removing write access from the page's PTEs.
 - Export pmap_remove_all() on alpha, i386, and ia64.  (It's already
   exported on sparc64.)
2002-11-11 05:17:34 +00:00
Marcel Moolenaar
3c428f6a5a Comment-out USB support. A kernel doesn't boot with it. Deal with it
later.
2002-11-11 01:50:10 +00:00
Dag-Erling Smørgrav
97b67f3141 Print real / avail memory in megabytes rather than kilobytes. 2002-11-09 16:19:14 +00:00
Thomas Moestl
0fca57b8b8 Move the definitions of the hw.physmem, hw.usermem and hw.availpages
sysctls to MI code; this reduces code duplication and makes all of them
available on sparc64, and the latter two on powerpc.
The semantics by the i386 and pc98 hw.availpages is slightly changed:
previously, holes between ranges of available pages would be included,
while they are excluded now. The new behaviour should be more correct
and brings i386 in line with the other architectures.

Move physmem to vm/vm_init.c, where this variable is used in MI code.
2002-11-07 23:57:17 +00:00
Juli Mallett
751d91aabd Remove what was a temporary bogus assignment of bits of siginfo_t, as it does
not look like the prerequisites to fill it in properly will be in the tree
for the upcoming release, but it's mostly done, so there is no need for these
to stay around to remind us.
2002-11-06 14:53:35 +00:00
Marcel Moolenaar
6e296c0d4e Define UMA_MD_SMALL_ALLOC so that we can allocate memory with region
7 addresses for use by page tables and kernel stacks.

Obtained from: peter
2002-11-06 04:47:38 +00:00
Marcel Moolenaar
654684338d o Remove devices that are commented out.
o  Enable sc
o  Remove NO_GEOM. We need GEOM for GPT.
o  Remove NO_CPU_COPTFLAGS.
2002-11-05 08:35:37 +00:00
Marcel Moolenaar
356492b3e2 Remove mcclock. It's an Alpha left-over. 2002-11-05 08:23:26 +00:00
Robert Watson
fabb3caa9e Sync to src/sys/kern/syscalls.master 2002-11-02 23:55:30 +00:00
Marcel Moolenaar
5d3590aed7 Don't pass the return address to exception_save in register b0. Use
a true scratch register. This change and future re-allocations will
eventually result in code that we can unwind to to get the preserved
registers of the process. This of course means that we cannot trash
them while saving the process context.

While re-allocating, remove the register aliases. Abstraction is in
this case disadvanteous.
2002-10-30 07:58:11 +00:00
Marcel Moolenaar
22d9ff4691 Rewrite cpu_switch(). The most notable change is the fact that we now
have f16-f31 as part of the context. The PCB has been reorganized to
better match how we save and restore the (preserved) registers. This
commit also moves the context restoriation to its own function (named
pcb_restore), as we did with pcb_save.

Only minimal effort has been put in writing optimal assembly. The
expectation is that there will be more rounds of changes.
2002-10-30 05:55:29 +00:00
Marcel Moolenaar
d506d5dc0e Remove mf.a from sapic_read() and sapic_write(). We only care
about ordering and not acceptance. The removal of mf.a leaves
behind the mf that accompanied it.
2002-10-28 01:59:27 +00:00
Marcel Moolenaar
9c156e012e Remove mf.a (the acceptance form of the memory fence instruction)
from all low-level bus space support functions. There's no need
to actually force the read/write to be accepted by the platform
before we can do anything else. We still have the mf instruction
there, which forces ordering. This too is not required given the
semantices of the bus space I/O functions, but it's not at all
clear to me if there are any poorly written device drivers that
depend on the strict ordering by the processor. The motto here is
to take small steps...
2002-10-28 01:00:57 +00:00
Marcel Moolenaar
84903f7f4e Make vmstat -i work:
o  Properly set the pointer to the counter for each interrupt and
   update the intrnames table.
o  Remove Alpha cruft from intrcnt.h.
o  Create INTRNAME_LEN as the single entity that defines the width
   of the names in the intrnames table (incl. terminatinf '\0').
2002-10-28 00:50:39 +00:00
Marcel Moolenaar
36cb272078 In ipi_send(), perform a mf instruction prior to initiating the IPI.
This guarantees that loads and stores emitted before the fence are
made visible before the IPI becomes pended.
Remove the mf.a instruction after initiating the IPI. There's no
guarantee that the IPI becomes pended prior to subsequent reads or
writes. Even if there was a guarantee, it would mostly be without
any benefit.
2002-10-27 23:00:46 +00:00
Peter Wemm
3556388d17 Add COMPAT_FREEBSD4 here too. It has COMPAT_43 as well. 2002-10-26 04:58:36 +00:00
Peter Wemm
23eeeff7be Split 4.x and 5.x signal handling so that we can keep 4.x signal
handling clean and functional as 5.x evolves.  This allows some of the
nasty bandaids in the 5.x codepaths to be unwound.

Encapsulate 4.x signal handling under COMPAT_FREEBSD4 (there is an
anti-foot-shooting measure in place, 5.x folks need this for a while) and
finish encapsulating the older stuff under COMPAT_43.  Since the ancient
stuff is required on alpha (longjmp(3) passes a 'struct osigcontext *'
to the current sigreturn(2), instead of the 'ucontext_t *' that sigreturn
is supposed to take), add a compile time check to prevent foot shooting
there too.  Add uniform COMPAT_43 stubs for ia64/sparc64/powerpc.

Tested on: i386, alpha, ia64.  Compiled on sparc64 (a few days ago).
Approved by: re
2002-10-25 19:10:58 +00:00
Julian Elischer
1434d3fe6f Extract out KSE specific code from machine specific code
so that there is ony one copy of it. Fix that one copy
so that KSEs with no mailbox in a KSE program are not a cause
of page faults (this can legitmatly happen).

Submitted by:	(parts) davidxu
2002-10-24 23:09:48 +00:00
John Baldwin
0f8e01f117 Oops, I missed a few changes in 'device acpica' -> 'device acpi' change.
Submitted by:	Hiten Pandya <hiten@angelica.unixdaemons.com>
2002-10-24 19:17:06 +00:00
John Baldwin
d2ec391b39 Rename 'device acpica' to 'device acpi'.
Approved by:	msmith, iwasaki
2002-10-24 19:05:04 +00:00
Marcel Moolenaar
b019ad1bc0 In cb_dumphdr() we were calling buf_write() with di->priv as the
pointer to a dumperinfo instead of di. A brainfart, surely. This
bug went unnoticed for all this time because the pointer is only
used by buf_write() when it can write a completely filled buffer
to the dump device. This depends on the number of memory chunks
that needs to be dumped. This has apparently been low enough that
it has never happened up until this point.
2002-10-20 23:39:43 +00:00