Commit Graph

967 Commits

Author SHA1 Message Date
Peter Wemm
839c70593f Move the itm reload to a single place rather than having two identical
copies of the reload.  Note that we use the precomputed itm_reload value
so that we can avoid a division in the kernel.  The ia64 cpu does not
have integer divide, so this would have been done by a floating point
operation.
2003-01-06 01:53:55 +00:00
Marcel Moolenaar
cbb095815a Replace the hardcoding of 255 as the clock interrupt vector with
CLOCK_VECTOR and define it as 254, not 255. Vector 255 is already
in use as the AP wakeup vector on the HP rx2600.

This needs to be made more dynamic. The likelyhood of vector 254
being in use is pretty small, but we already have code to assign
vectors to IPIs (see sal.c) and it's preobably better to have a
centralized "vector manager" that hands out vectors based on
some imput (like priority).
2003-01-06 01:39:25 +00:00
Marcel Moolenaar
de09ec92e6 Manually inline handleclock(). There's only a single caller and
handleclock itself is trivial.

While here, replace (itc_frequency+hz/2)/hz with itm_reload for
consistency. There's now a single place where we determine the
ITM reload value.
2003-01-06 00:38:35 +00:00
Marcel Moolenaar
0d6d96ea78 Count interrupts as soon as possible. This makes sure interrupts are
counted even when there are no handlers.
2003-01-06 00:25:31 +00:00
Marcel Moolenaar
c58d580e70 Don't hardcode the address of the local (S)APIC (aka processor
interrupt block). We use the previously hardcoded address as a
default only, but will otherwise use whatever ACPI tells us.
The address can be found in the MADT table header or in the
LAPIC override table entry.
2003-01-05 22:14:30 +00:00
Marcel Moolenaar
ff263ea2dc Bump the number of interrupts from 65 to 257. This is a waste of
space most of the time, but handles machines with lots of I/O
(S)APICs. We cannot make this more dynamic without breaking the
interface with vmstat. Hence, we need to fix the interface first.
2003-01-05 22:00:19 +00:00
Marcel Moolenaar
671f297efb Handle 3-digit interrupt numbers (vectors). While here, change the
name of unused entries from "intr XXX" to "#XXX". This makes it
easier to debug interrupt problems, because vmstat can be hacked
more easily to dump all interrupt entries that are in use and not
those that have had interrupts.
2003-01-05 21:48:33 +00:00
Marcel Moolenaar
d291811a6a Make all memory I/O addresses (explicitly) 64-bit. Memory mapped
devices aren't necessarily mapped within 4GB. I/O port addresses
are offsets into the memory mapped I/O port space, which is not
larger than 16MB. No need to convert those to 64 bit types.
2003-01-05 21:40:45 +00:00
Marcel Moolenaar
aa063fddbf Provide a null-implementation for bus_space_unmap, like i386.
bus_space_unmap is required for puc(4).
2003-01-05 21:34:05 +00:00
Marcel Moolenaar
518a75ea1c Adopt, adapt and improve:
o  Make the URL of the handbook match reality
o  Improve some comments (either wording or formatting)
o  Sync with i386: comment-out DDB, INVARIANTS, INVARIANT_SUPPORT
o  Add some more SCSI/RAID controllers:
	ahd, mpt, asr, ciss, dpt, iir, mly, ida
o  Remove support for the parallel port
o  Add NICs: em, bge
o  Remove NICs: ste, tl, tx, vr, wb
o  Enable USB support again, except of the UHCI host controller.
   UHCI still hangs the BigSur (=HP i2000) machines, and makes
   them useless. The OHCI controller works fine. Note that newer
   ia64 boxes based on the Intel host controllers (UHCI or EHCI)
   still won't have USB support. We really need to import the
   EHCI host controller from NetBSD...
2003-01-05 00:04:28 +00:00
Alan Cox
fd421a85e1 Hold the page queues lock around pmap_remove_pte() in pmap_enter().
Submitted by:	Arun Sharma <adsharma@unix-os.sc.intel.com>
2003-01-04 06:49:52 +00:00
Marcel Moolenaar
dd778c94bf Make this build and sync-up:
o  Add COMPAT_FREEBSD4
o  Remove NO_GEOM
o  Remove commented out options.
2003-01-03 23:10:47 +00:00
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
Marcel Moolenaar
bfc937c758 Remove the special casing for IP addresses that are within the IVT
or the do_syscall() function. We have unwind directives to stop the
unwinder.
2002-10-20 06:03:05 +00:00
Marcel Moolenaar
341572f4bd Define IVT_ENTRY and IVT_END as special versions of ENTRY and END
for defining vectors. As a result, each vector will be a global
function with unwind directives to notify the unwinder that we're
in an interrupt handler. In the debugger this will show up something
like:

Debugger(0xe000000000a211d8, 0xe000000000748960) at Debugger+0x31
panic(0xe000000000a36858, 0xe0000000021d32d0, 0xe000000000ae42e8, ...
trap(0x14, 0x100000, 0xe0000000021d32d0, 0x0, 0xa0000000002095f0, ...
ivt_Data_TLB(0x14, 0x100000, 0xe0000000021d32d0) at ivt_Data_TLB+0x1f0
2002-10-20 06:00:09 +00:00
Peter Wemm
8556393bb2 Stake a claim on 418 (__xstat), 419 (__xfstat), 420 (__xlstat) 2002-10-19 22:25:31 +00:00
Peter Wemm
c8447553b5 Grab 416/417 real estate before I get burned while testing again.
This is for the not-quite-ready signal/fpu abi stuff.  It may not see
the light of day, but I'm certainly not going to be able to validate it
when getting shot in the foot due to syscall number conflicts.
2002-10-19 22:09:23 +00:00
Robert Watson
bc5245d94c Add a placeholder for the execve_mac() system call, similar to SELinux's
execve_secure() system call, which permits a process to pass in a label
for a label change during exec.  This permits SELinux to change the
label for the resulting exec without a race following a manual label
change on the process.  Because this interface uses our general purpose
MAC label abstraction, we call it execve_mac(), and wrap our port of
SELinux's execve_secure() around it with appropriate sid mappings.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2002-10-19 21:06:57 +00:00
Marcel Moolenaar
c8a4afbc11 Update the unwind information when modules are loaded and unloaded
by using the linker hooks. Since these hooks are called for the
kernel as well, we don't need to deal with that with a special
SYSINIT. The initialization implicitly performed on the first
update of the unwind information is made explicit with a SYSINIT.
We now don't need the _ia64_unwind_{start|end} symbols.
2002-10-19 19:30:38 +00:00
Marcel Moolenaar
1aeb23cdfa Add two hooks to signal module load and module unload to MD code.
The primary reason for this is to allow MD code to process machine
specific attributes, segments or sections in the ELF file and
update machine specific state accordingly. An immediate use of this
is in the ia64 port where unwind information is updated to allow
debugging and tracing in/across modules. Note that this commit
does not add the functionality to the ia64 port. See revision 1.9
of ia64/ia64/elf_machdep.c.

Validated on: alpha, i386, ia64
2002-10-19 19:16:03 +00:00
Robert Watson
c7063e5913 Permits UFS ACLs to be used with the GENERIC kernel. Due to recent
ACL configuration changes, this shouldn't result in different code paths
for file systems not explicitly configured for ACLs by the system
administrator.  For UFS1, administrators must still recompile their
kernel to add support for extended attributes; for UFS2, it's sufficient
to enable ACLs using tunefs or at mount-time (tunefs preferred for
reliability reasons).  UFS2, for a variety of reasons, including
performance and reliability, is the preferred file system for use with
ACLs.

Approved by:	re
2002-10-19 16:54:15 +00:00
Marcel Moolenaar
db55d99d36 Make this compile when DDB is not defined by conditionally compiling
all references to ksym_start and ksym_end.
2002-10-19 04:14:08 +00:00
Marcel Moolenaar
47f750125b Fix kernel module loading on ia64. Cross-module function calls
were improperly relocated due to faulty logic in lookup_fdesc()
in elf_machdep.c. The symbol index (symidx) was bogusly used for
load modules other than the one the relocation applied to. This
resulted in bogus bindings and consequently runtime failures.

The fix is to use the symbol index only for the module being
relocated and to use the symbol name for look-ups in the
modules in the dependent list. As such, we need a function to
return the symbol name given the linker file and symbol index.
2002-10-15 05:40:07 +00:00
Peter Wemm
af3f249f3a The a.out md_coredump stuff isn't referenced anywhere anymore, and
hasn't been filled in for ages..  Nuked.
2002-10-15 00:02:50 +00:00
Marcel Moolenaar
df8b64f634 Allow kernel dumps to be aborted with ctrl-C. 2002-10-14 05:38:22 +00:00
Mike Barcroft
4275e0d98d Remove the P1003_1B kernel option; it is no longer used. 2002-10-13 16:29:17 +00:00
Mike Barcroft
795b630655 struct ia64_fpreg needs to be available outside of the kernel for
struct sigcontext.

Pointy hat to: mike
2002-10-13 15:30:17 +00:00
Mike Barcroft
7a77412855 Add standards visibility conditionals. Change any uses of sigset_t to
struct __sigset to avoid depending on objects from <sys/signal.h>.
2002-10-13 00:31:46 +00:00
Marcel Moolenaar
163afbe0d5 o Fix typo in previous commit: s/sc-nsect/sc->nsect/
o  Fix printf format error for %d format with long argument.
2002-10-12 23:00:40 +00:00
Marcel Moolenaar
3508148f6e Plug two holes where we returned to userland without restoring
the predicate registers. Even though the ITLB and DTLB interrupts
happen often enough, this bug didn't do much harm. The reason
is that the interrupt handlers only modify p1 and since this is
a preserved (callee-saved) register it is hardly used in code
generated by the compiler. Compilers use scratch registers by
default. Changing the interrupt handlers to use p6 (ie a scratch
register) proved that the bug was in fact fatal.
2002-10-12 22:42:48 +00:00
Marcel Moolenaar
02cda72148 Polish previous commit:
o  Replace KSTACK_PAGES with pages on panic() in pmap_new_thread(),
o  Fix style bugs in adjacent code,
o  Use NULL instead of 0 for pointers,
o  Save the virtual kstack address if we create an alternate
   kstack because 1) we can derive the physical (RR7) address
   from it and 2) we need the virtual address for contigfree()
   in pmap_dispose_thread(). Thus td_altkstack saves
   td_md.md_kstackvirt.
2002-10-12 21:04:01 +00:00
Marcel Moolenaar
8d7d4e5d71 MFp4: Include machine/vmparam.h to pull in definition of IA64_RR_BASE.
Obtained from: peter
2002-10-12 20:54:05 +00:00
Marcel Moolenaar
526a05f186 Remove the dependency on ia64_cpu.h by not defining pmap_kextract()
as a trivial function that only calls ia64_tpa() and hence requires
the prototype of ia64_tpa(), but by defining pmap_kextract as
ia64_tpa. This solves the inclusion ordering issue in ddb/db_watch.c
2002-10-12 20:35:56 +00:00
Peter Wemm
4d5266715e cut/paste the pmap_new_altkstack stuff from the other platforms.
It's no different here.  Update the rest of the kstack API's for scottl's
changes.
2002-10-11 22:29:22 +00:00
Peter Wemm
0250db7caa Call uma_zalloc on pvzone with M_NOWAIT, just like i386 and alpha.
Otherwise we get hundreds of 'could sleep' during boot.
2002-10-11 21:41:53 +00:00
Mike Barcroft
2b7f24d210 Change iov_base's type from char *' to the standard void *'. All
uses of iov_base which assume its type is `char *' (in order to do
pointer arithmetic) have been updated to cast iov_base to `char *'.
2002-10-11 14:58:34 +00:00
Peter Wemm
d6b8445ebd re-regen. Sigh. 2002-10-09 22:40:41 +00:00
Peter Wemm
d4f4eb09d9 Sigh. Fix fat-fingering of diff. I knew this was going to happen. 2002-10-09 22:40:02 +00:00
Peter Wemm
9105d26b73 regenerate. sendfile stuff and other recently picked up stubs. 2002-10-09 22:28:48 +00:00
Peter Wemm
459e3a7a37 Try and deal with the #ifdef COMPAT_FREEBSD4 sendfile stuff. This would
have been a lot easier if do_sendfile() was usable externally.
2002-10-09 22:27:24 +00:00
Peter Wemm
4f4c431d9b Try and patch up some tab-to-space spammage. 2002-10-09 22:14:35 +00:00
Peter Wemm
8e223883f0 Add placeholder stubs for nsendfile, mac_syscall, ksem_close, ksem_post,
ksem_wait, ksem_trywait, ksem_init, ksem_open, ksem_unlink, ksem_getvalue,
ksem_destroy, __mac_get_pid, __mac_get_link, __mac_set_link,
extattr_set_link, extattr_get_link, extattr_delete_link.
2002-10-09 22:10:23 +00:00
Mike Barcroft
ddb056b7d4 Add conditionals to allow va_list to be defined in other headers. 2002-10-06 22:02:06 +00:00
Mike Barcroft
0b058e3cbd o Add conditionals to allow va_list to be defined in other headers.
o Standardize on _MACHINE_STDARG_H_ to allow multiple header includes.
o Restrict the definition of va_copy() to C99 environments.
2002-10-06 22:01:07 +00:00
David E. O'Brien
39b9b6a43f It appears CPU_MAXID should be 1 more than the number of CPU_* defines. 2002-10-06 05:25:10 +00:00
Poul-Henning Kamp
3bd6561289 NB: This commit does *NOT* make GEOM the default in FreeBSD
NB: But it will enable it in all kernels not having options "NO_GEOM"

Put the GEOM related options into the intended order.

Add "options NO_GEOM" to all kernel configs apart from NOTES.

In some order of controlled fashion, the NO_GEOM options will be
removed, architecture by architecture in the coming days.

There are currently three known issues which may force people to
need the NO_GEOM option:

boot0cfg/fdisk:
        Tries to update the MBR while it is being used to control
        slices.  GEOM does not allow this as a direct operation.

SCSI floppy drives:
        Appearantly the scsi-da driver return "EBUSY" if no media
        is inserted.  This is wrong, it should return ENXIO.

PC98:
        It is unclear if GEOM correctly recognizes all variants of
        PC98 disklabels.  (Help Wanted!  I have neither docs nor HW)

These issues are all being worked.

Sponsored by:	DARPA & NAI Labs.
2002-10-05 16:35:33 +00:00
Mike Barcroft
e61d3b10d7 Fix namespace issues by using visibility conditionals from
<sys/cdefs.h>.
2002-10-05 05:47:56 +00:00
Mike Barcroft
085f8416a2 style(9) <machine/setjmp.h> headers so they look mostly the same. 2002-10-04 22:10:06 +00:00
Sam Leffler
14c17bd293 New bus_dma interfaces for use by crypto device drivers:
o bus_dmamap_load_mbuf
o bus_dmamap_load_uio

Test on i386.  Known to compile on alpha and sparc64, but not tested.
Otherwise untried.
2002-10-04 20:40:39 +00:00
Peter Wemm
debff18680 Gah, spell extern correctly. Do not trust cut/paste via old mozilla
builds.
2002-10-04 01:57:46 +00:00
Peter Wemm
ae8ef28761 List the IO SAPIC delivery mode definitions. 2002-10-04 01:33:30 +00:00
Peter Wemm
74cf93d79d Declare itc_frequency and itm_reload. 2002-10-04 01:23:58 +00:00
Peter Wemm
120e7b6b43 Do a bit of rude hackery to get clock interrupts on all CPUs. This
is partly based on the Alpha system which duplicates the clock to
each cpu, instead of doing a clock roundrobin like on i386.  This means
we get hz * ncpu clocks per second and so we have to seperate clock
sampling from actual 'do the work' clock processing.  The BSP runs the
complete processing, the rest just sample state etc.

Using the on-cpu interval timer is not ideal as it will drift.  There
is more to be done here, we should use an external clock source.
2002-10-04 01:00:35 +00:00
Peter Wemm
da2893e7ed Update stubs for post-kseIII. 2002-10-04 00:19:58 +00:00
Peter Wemm
1678d0990b Update for post-kseIII 2002-10-04 00:18:21 +00:00
Archie Cobbs
36a8dac10d Let kse_wakeup() take a KSE mailbox pointer argument.
Reviewed by:	julian
2002-10-02 16:48:16 +00:00
Poul-Henning Kamp
fcd054483a Fix the same misinitialization of pmap_prefault_pageorder as on i386.
Suggeste by:	jake
2002-10-01 20:56:29 +00:00
Archie Cobbs
89def71cbd Make the following name changes to KSE related functions, etc., to better
represent their purpose and minimize namespace conflicts:

	kse_fn_t		-> kse_func_t
	struct thread_mailbox	-> struct kse_thr_mailbox
	thread_interrupt()	-> kse_thr_interrupt()
	kse_yield()		-> kse_release()
	kse_new()		-> kse_create()

Add missing declaration of kse_thr_interrupt() to <sys/kse.h>.
Regenerate the various generated syscall files. Minor style fixes.

Reviewed by:	julian
2002-09-25 18:10:42 +00:00
Alfred Perlstein
4f492bfab5 use __packed. 2002-09-23 18:54:32 +00:00
Peter Wemm
c692fbe091 At great personal risk, add a __packed and __aligned(x) define that
expand to __attribute__((packed)) and __attribute__((aligned(x)))
respectively.  Replace the handful of gcc-ism's that use
__attribute__((aligned(16))) etc around the kernel with __aligned(16).

There are over 400 __attribute__((packed)) to deal with, that can come
later.  I just want to use __packed in new code rather than add more
gcc-ism's.
2002-09-23 05:55:10 +00:00
Mike Barcroft
c0d4804d67 Be careful not to define GCC-specific optimizations in the non-GCC
case.
2002-09-23 04:32:17 +00:00
Poul-Henning Kamp
7812d86f03 (This commit touches about 15 disk device drivers in a very consistent
and predictable way, and I apologize if I have gotten it wrong anywhere,
getting prior review on a patch like this is not feasible, considering
the number of people involved and hardware availability etc.)

If struct disklabel is the messenger: kill the messenger.

Inside struct disk we had a struct disklabel which disk drivers used to
communicate certain metrics to the disklayer above (GEOM or the disk
mini-layer).  This commit changes this communication to use four
explicit fields instead.

Amongst the benefits is that the fields do not get overwritten by
wrong or bogus on-disk disklabels.

Once that is clear, <sys/disk.h> which is included in the drivers
no longer need to pull <sys/disklabel.h> and <sys/diskslice.h> in,
the few places that needs them, have gotten explicit #includes for
them.

The disklabel inside struct disk is now only for internal use in
the disk mini-layer, so instead of embedding it, we malloc it as
we need it.

This concludes (modulus any mistakes) the series of disklabel related
commits.

I belive it all amounts to a NOP for all the rest of you :-)

Sponsored by:   DARPA & NAI Labs.
2002-09-20 19:36:05 +00:00
Poul-Henning Kamp
6fb3d70418 For reasons now lost in historical fog, the bounds_check_with_label()
function were put in i386/i386/machdep.c from where it has been
cut and pasted to other architectures with only minor corruption.

Disklabel is really a MI format in many ways, at least it certainly
is when you operate on struct disklabel.

Put bounds_check_with_label() back in subr_disklabel.c where it belongs.

Sponsored by:   DARPA & NAI Labs.
2002-09-20 17:51:00 +00:00
John Baldwin
c79408a059 Implement db_print_backtrace() if DDB is compiled into the kernel. This
MD function is just a wrapper around db_stack_trace_cmd() that prints out
a backtrace of curthread.  Currently, this function is only implemented
on i386 and alpha (and the alpha version isn't quite tested yet, will do
that in a bit).  Other changes:

- For i386, fix a bug in the raw frame address case.  The eip we extract
  from the passed in frame address does not match the frame we received.
  Thus, instead of printing a bogus frame with the wrong eip, go ahead
  and advance frame down to the same frame as the eip we are using.
- For alpha, attempt to add a way of doing a raw trace for alpha.  Instead
  of passing a frame address in 'addr', pass in a pointer to a structure
  containing PC and KSP and use those to start the backtrace.  The alpha
  db_print_backtrace() uses asm to read in the current PC and KSP values
  into such a request.

Tested on:	i386
Requested by:	many
2002-09-19 18:46:29 +00:00
Mike Barcroft
86954511d2 Implement C99's va_copy() macro. 2002-09-18 07:33:16 +00:00
Peter Wemm
66422f5b7a Initiate deorbit burn for the i386-only a.out related support. Moves are
under way to move the remnants of the a.out toolchain to ports.  As the
comment in src/Makefile said, this stuff is deprecated and one should not
expect this to remain beyond 4.0-REL.  It has already lasted WAY beyond
that.

Notable exceptions:
gcc - I have not touched the a.out generation stuff there.
ldd/ldconfig - still have some code to interface with a.out rtld.
old as/ld/etc - I have not removed these yet, pending their move to ports.
some includes - necessary for ldd/ldconfig for now.

Tested on: i386 (extensively), alpha
2002-09-17 01:49:00 +00:00
Julian Elischer
4f0db5e08c Allocate KSEs and KSEGRPs separatly and remove them from the proc structure.
next step is to allow > 1 to be allocated per process. This would give
multi-processor threads. (when the rest of the infrastructure is
in place)

While doing this I noticed libkvm and sys/kern/kern_proc.c:fill_kinfo_proc
are diverging more than they should.. corrective action needed soon.
2002-09-15 23:52:25 +00:00
Jun Kuriyama
b37a9be231 Use "options " rather than "options<tab>". 2002-09-09 02:40:59 +00:00
Juli Mallett
77c70ade18 Fill out two fields (si_pid, si_uid) in the siginfo structure handed back
to userland in the signal handler that were not being iflled out before, but
should and can be.

This part of sendsig could be slightly refactored to use an MI interface, or
ideally, *sendsig*() would have an API change to accept a siginfo_t, which
would be filled out by an MI function in the level above sendsig, and said MI
function would make a small call into MD code to fill out the MD parts (some
of which may be bogus, such as the si_addr stuff in some places).  This would
eventually make it possible for parts of the kernel sending signals to set up
a siginfo with meaningful information.

Reviewed by:	mux
MFC after:	2 weeks
2002-09-07 19:12:53 +00:00
Peter Wemm
1a50106e30 Zap the implementations of the i386-aout specific cpu_coredump function.
Most of the non-i386 platforms had rather broken implementations anyway.
2002-09-07 01:26:34 +00:00
Peter Wemm
b11ac5597c Make this compile 2002-09-03 04:30:00 +00:00
Mike Barcroft
dd1b6791a8 Now that _BSD_CLK_TCK_ and _BSD_CLOCKS_PER_SEC_ are the same on all
architectures, move the definition directly into <time.h> and finish
the removal of <machine/ansi.h>.
2002-09-03 00:06:58 +00:00
Mike Barcroft
f2893bd9ef Align _BSD_CLK_TCK_ and _BSD_CLOCKS_PER_SEC_ with most other
platforms.  This introduces some binary incompatibilities for
dynamically linked programs which make use of clock(3) and times(3).
2002-09-02 22:40:12 +00:00
Alan Cox
660ab349e5 o Remove an initialized but unused variable from pmap_remove_all(). 2002-09-02 05:13:37 +00:00
Marcel Moolenaar
9010448c55 Sync up: remove device counts. 2002-09-01 22:34:58 +00:00
Jake Burkholder
f36ba45234 Added fields for VM_MIN_ADDRESS, PS_STRINGS and stack protections to
sysentvec.  Initialized all fields of all sysentvecs, which will allow
them to be used instead of constants in more places.  Provided stack
fixup routines for emulations that previously used the default.
2002-09-01 21:41:24 +00:00
Peter Wemm
31cdffc6d8 Take a shot at fixing up a whole stack of style and other embarresing
unforced errors that Bruce identified.  I have not yet addressed all of
his concerns.
2002-08-31 03:33:32 +00:00
Peter Wemm
0b1482d1fd Do not use an object for the pte and pv zones on ia64 because it overrides
the pmap_allocf() function that we provide above.  We still use the limits
via other means.

Submitted by:	jeff
2002-08-31 03:11:20 +00:00
Peter Wemm
447b3772dc Change hw.physmem and hw.usermem to unsigned long like they used to be
in the original hardwired sysctl implementation.

The buf size calculator still overflows an integer on machines with large
KVA (eg: ia64) where the number of pages does not fit into an int.  Use
'long' there.

Change Maxmem and physmem and related variables to 'long', mostly for
completeness.  Machines are not likely to overflow 'int' pages in the
near term, but then again, 640K ought to be enough for anybody.  This
comes for free on 32 bit machines, so why not?
2002-08-30 04:04:37 +00:00
Jake Burkholder
bafbd49201 Renamed poorly named setregs to exec_setregs. Moved its prototype to
imgact.h with the other exec support functions.
2002-08-29 06:17:48 +00:00
Jake Burkholder
409017e8e1 Fixed printf format errors. 2002-08-29 05:49:04 +00:00
Alan Cox
6508a194aa o Retire pmap_pageable(). It's an advisory routine that none
of our platforms implements.
2002-08-25 04:20:05 +00:00
Marcel Moolenaar
1b570732c5 s/_BSD_VA_LIST_/__va_list/. The former type doesn't exist anymore. 2002-08-23 22:19:57 +00:00
Mike Barcroft
bd8e0716d9 Move several MI types from <machine/_types.h> to <sys/_types.h>.
These types are unlikely to ever become very MD.  They include:
clockid_t, ct_rune_t, fflags_t, intrmask_t, mbstate_t, off_t, pid_t,
rune_t, socklen_t, timer_t, wchar_t, and wint_t.

While moving them, make a few adjustments (submitted by bde):
o __ct_rune_t needs to be precisely `int', not necessarily __int32_t,
  since the arg type of the ctype functions is int.
o __rune_t, __wchar_t and __wint_t inherit this via a typedef of
  __ct_rune_t.
o Some minor wording changes in the comment blocks for ct_rune_t and
  mbstate_t.

Submitted by:	bde (partially)
2002-08-23 16:49:06 +00:00
Maxime Henrion
de794a36b9 Convert NEXUS_ACCESSOR to use the __BUS_ACCESSOR
macro instead of reimplementing it.

Approved by:	peter
2002-08-22 19:47:10 +00:00
Mike Barcroft
abbd890233 o Merge <machine/ansi.h> and <machine/types.h> into a new header
called <machine/_types.h>.
o <machine/ansi.h> will continue to live so it can define MD clock
  macros, which are only MD because of gratuitous differences between
  architectures.
o Change all headers to make use of this.  This mainly involves
  changing:
    #ifdef _BSD_FOO_T_
    typedef	_BSD_FOO_T_	foo_t;
    #undef _BSD_FOO_T_
    #endif
  to:
    #ifndef _FOO_T_DECLARED
    typedef	__foo_t	foo_t;
    #define	_FOO_T_DECLARED
    #endif

Concept by:	bde
Reviewed by:	jake, obrien
2002-08-21 16:20:02 +00:00
Robert Watson
0a9b91cde1 Correct one more errant whitespace nit that crept in during changes
in the arguments to vn_rdwr().  Hopefully the last.
2002-08-20 02:21:38 +00:00
Peter Wemm
f453022cd9 remove unit counts from atkbdc, pckbd, sc 2002-08-20 00:10:22 +00:00
Robert Watson
2b94185b82 Correct a minor whitespace nit that sneaked in with my previous commit. 2002-08-15 21:41:20 +00:00
Robert Watson
9ca435893b In order to better support flexible and extensible access control,
make a series of modifications to the credential arguments relating
to file read and write operations to cliarfy which credential is
used for what:

- Change fo_read() and fo_write() to accept "active_cred" instead of
  "cred", and change the semantics of consumers of fo_read() and
  fo_write() to pass the active credential of the thread requesting
  an operation rather than the cached file cred.  The cached file
  cred is still available in fo_read() and fo_write() consumers
  via fp->f_cred.  These changes largely in sys_generic.c.

For each implementation of fo_read() and fo_write(), update cred
usage to reflect this change and maintain current semantics:

- badfo_readwrite() unchanged
- kqueue_read/write() unchanged
  pipe_read/write() now authorize MAC using active_cred rather
  than td->td_ucred
- soo_read/write() unchanged
- vn_read/write() now authorize MAC using active_cred but
  VOP_READ/WRITE() with fp->f_cred

Modify vn_rdwr() to accept two credential arguments instead of a
single credential: active_cred and file_cred.  Use active_cred
for MAC authorization, and select a credential for use in
VOP_READ/WRITE() based on whether file_cred is NULL or not.  If
file_cred is provided, authorize the VOP using that cred,
otherwise the active credential, matching current semantics.

Modify current vn_rdwr() consumers to pass a file_cred if used
in the context of a struct file, and to always pass active_cred.
When vn_rdwr() is used without a file_cred, pass NOCRED.

These changes should maintain current semantics for read/write,
but avoid a redundant passing of fp->f_cred, as well as making
it more clear what the origin of each credential is in file
descriptor read/write operations.

Follow-up commits will make similar changes to other file descriptor
operations, and modify the MAC framework to pass both credentials
to MAC policy modules so they can implement either semantic for
revocation.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, NAI Labs
2002-08-15 20:55:08 +00:00
Alan Cox
38f612e053 o Remove the setting and clearing of the PG_MAPPED flag from the alpha and
ia64 pmap.
 o Remove the PG_MAPPED flag's declaration.
2002-08-10 18:01:39 +00:00
Peter Wemm
ba1d9b20f4 My quad cpu itanium2 box has its cpu's numbered with a lid starting
at 192.  Masking off bottom 4 bits is not very good here.
2002-08-10 03:36:42 +00:00
Brooks Davis
05c872ad62 Make ppp(4) devices clonable and unloadable. 2002-08-09 15:30:48 +00:00
Alan Cox
33559722db o Introduce pmap_page_is_mapped(). Its purpose is to obsolete
the PG_MAPPED flag.
2002-08-07 18:03:00 +00:00
Peter Wemm
af932613d7 Ignore memory above 4GB for now due to unpleasant pci issues. 2002-08-03 03:35:06 +00:00
Alan Cox
e5b95b1209 o Lock page queue accesses by vm_page_deactivate(). 2002-08-02 04:40:10 +00:00
Mitsuru IWASAKI
b69ed3f4c6 Resolve conflicts arising from the ACPI CA 20020725 import. 2002-07-30 19:35:32 +00:00
Mike Barcroft
49545b3891 Create a new header <machine/_stdint.h> for storing MD parts of
<stdint.h>.  Previously, parts were defined in <machine/ansi.h> and
<machine/limits.h>.  This resulted in two problems:
  (1) Defining macros in <machine/ansi.h> gets in the way of that
      header only defining types.
  (2) Defining C99 limits in <machine/limits.h> adds pollution to
      <limits.h>.
2002-07-29 17:41:23 +00:00
Peter Wemm
b618108fff de-count pci 2002-07-23 06:38:47 +00:00
Andrew R. Reiter
ef098feafc - Pass the VM_ALLOC_WIRED flag to vm_page_alloc() in pmap_growkernel() so
that we can avoid a call to vm_page_lock_queues().

Approved by:	peter
2002-07-23 04:18:10 +00:00
Peter Wemm
fc147d7fe9 Add explicit unit count on 'device pci' for ahc/ahd 2002-07-21 23:07:31 +00:00
Peter Wemm
0493901bdc Change the max IRQ from 63 to 255. I realize we have to block some out
still for the IPI vectors, but 63 isn't enough.  There is an fxp at IRQ 86
on the Itanium2 box I have.
2002-07-20 06:25:47 +00:00
Peter Wemm
db27052e18 Regenerate 2002-07-20 02:56:34 +00:00
Peter Wemm
3ebc124838 Infrastructure tweaks to allow having both an Elf32 and an Elf64 executable
handler in the kernel at the same time.  Also, allow for the
exec_new_vmspace() code to build a different sized vmspace depending on
the executable environment.  This is a big help for execing i386 binaries
on ia64.   The ELF exec code grows the ability to map partial pages when
there is a page size difference, eg: emulating 4K pages on 8K or 16K
hardware pages.

Flesh out the i386 emulation support for ia64.  At this point, the only
binary that I know of that fails is cvsup, because the cvsup runtime
tries to execute code in pages not marked executable.

Obtained from:  dfr (mostly, many tweaks from me).
2002-07-20 02:56:12 +00:00
Peter Wemm
e257592281 Fix a transcription typo. s/ACPI_PTR/ACPI_POINTER/ 2002-07-17 23:49:55 +00:00
Peter Wemm
3aabf3e27d Fix some typos in 1.68 from over a week ago. 2002-07-17 23:22:50 +00:00
Peter Wemm
6ae7b9cb2b Cap the initial PV and PTE table preallocations. Otherwise we explode
on the Itanium2 system I have when we use up *all* of the initial 256MB
direct mapped region before we are ready to dynamically expand it.

The machine that I have has 4 cpus and a very big hole in the middle.
This makes the bogus '(last_address - first_address) / PAGE_SIZE'
calculations especially dangerous and caused many millions of initial
PV/PTE's to be preallocated.
2002-07-17 23:21:59 +00:00
Peter Wemm
5e6ce035f1 Be sure to use a logical address for the SAL table. For some reason the
phsysical address is still mapped at this stage of boot on the Itanium1
SDV boxes we have.  But Itanium2 does *not* let us get away with this.
2002-07-17 23:17:49 +00:00
Peter Wemm
d63a55f418 Update for new ACPICA import. Gah. 2002-07-17 23:14:41 +00:00
John Baldwin
dde0429505 Various comment and minor style fixes. No actual content changes.
Inspired by:	bde
2002-07-16 18:20:17 +00:00
Alan Cox
0d76c3ba86 o Lock page queue accesses by vm_page_wire(). 2002-07-14 23:31:04 +00:00
Jonathan Mini
08b38412c8 Add additional cred_free_thread() calls that I had missed the first time.
Pointed out by:	jhb
2002-07-13 04:36:50 +00:00
John Baldwin
33d7ad1abe Set the thread state of the newly chosen to run thread to TDS_RUNNING in
choosethread() in MI C code instead of doing it in in assembly in all the
various cpu_switch() functions.  This fixes problems on ia64 and sparc64.

Reviewed by:	julian, peter, benno
Tested on:	i386, alpha, sparc64
2002-07-12 18:34:22 +00:00
Mike Barcroft
f889202ba4 Remove label_t and physadr, which seem to have never been used in
FreeBSD.

Submitted by:	bde
2002-07-10 15:47:59 +00:00
Mike Barcroft
e47bee6dce Remove an unused type. 2002-07-09 01:20:51 +00:00
Mike Barcroft
ba5fe51088 Move __offsetof() macro from <machine/ansi.h> to <sys/cdefs.h>. It's
hardly MD, since all our platforms share the same macro.  It's not
really compiler dependent either, but this helps in reducing
<machine/ansi.h> to only type definitions.
2002-07-08 16:43:35 +00:00
Peter Wemm
a58b3a6878 Add a special page zero entry point intended to be called via the single
threaded VM pagezero kthread outside of Giant.  For some platforms, this
is really easy since it can just use the direct mapped region.  For others,
IPI sending is involved or there are other issues, so grab Giant when
needed.

We still have preemption issues to deal with, but Alan Cox has an
interesting suggestion on how to minimize the problem on x86.

Use Luigi's hack for preserving the (lack of) priority.

Turn the idle zeroing back on since it can now actually do something useful
outside of Giant in many cases.
2002-07-08 04:24:26 +00:00
Peter Wemm
a136efe9b6 Collect all the (now equivalent) pmap_new_proc/pmap_dispose_proc/
pmap_swapin_proc/pmap_swapout_proc functions from the MD pmap code
and use a single equivalent MI version.  There are other cleanups
needed still.

While here, use the UMA zone hooks to keep a cache of preinitialized
proc structures handy, just like the thread system does.  This eliminates
one dependency on 'struct proc' being persistent even after being freed.
There are some comments about things that can be factored out into
ctor/dtor functions if it is worth it.  For now they are mostly just
doing statistics to get a feel of how it is working.
2002-07-07 23:05:27 +00:00
Peter Wemm
7b719ec324 Back out proc part of last commit. UMA manages the thread cache only, and
we just have to deal with the kstack when told to.  We do not have a
UMA-managed cache for the proc struct and its associated upage yet.  So,
go back to the old lazy mechanism.  Note that if UMA destroys pages that
used to contain proc structures, we'll lose the corresponding upage
forever.  (zones never did this - once a page was allocated, it stayed
attached to the proc zone forever)
2002-07-05 01:27:35 +00:00
Peter Wemm
361323eac6 Copy from sparc64/pmap.c rev 1.64 (Retrofit changes from i386/pmap.c
rev 1.328-1.331.) but for uarea only.  We still have our own broken
kstack code here.
2002-07-05 00:42:09 +00:00
Mitsuru IWASAKI
74fc979a09 Resolve conflicts arising from the ACPI CA 20020404 import. 2002-06-30 17:53:12 +00:00
Mike Barcroft
a19d429398 Since printf(3) now supports the `j' conversion specifier, use that
when printing intmax_t and uintmax_t.

Forgotten by:	mike
Noticed by:	bde
2002-06-30 05:48:03 +00:00
Julian Elischer
8540497c50 Fix reverse ordering of locks. add a comment about locks on some platforms.
Submitted by:	jhb@freebsd.org
2002-06-29 23:58:50 +00:00
Julian Elischer
e1047617d6 Add KSE stubs to MD parts of ia64 code.
Dfr will fill these out when we decide to enable KSEs on ia64
(probably not immediatly)
2002-06-29 18:26:18 +00:00
Julian Elischer
378df78528 Add a copy of the sparc64 machine/kse.h to satisfy depencies..
dfr will fill in the correct contents at a later time.
2002-06-29 18:07:50 +00:00
Julian Elischer
e602ba25fd Part 1 of KSE-III
The ability to schedule multiple threads per process
(one one cpu) by making ALL system calls optionally asynchronous.
to come: ia64 and power-pc patches, patches for gdb, test program (in tools)

Reviewed by:	Almost everyone who counts
	(at various times, peter, jhb, matt, alfred, mini, bernd,
	and a cast of thousands)

	NOTE: this is still Beta code, and contains lots of debugging stuff.
	expect slight instability in signals..
2002-06-29 17:26:22 +00:00
Doug Rabson
558685292a Add UMA_ZONE_VM flag to the zones which are used for pmap_enter(). 2002-06-24 18:31:49 +00:00
Jake Burkholder
8ba3d077ff Add an MD callout like cpu_exit, but which is called after sched_lock is
obtained, when all other scheduling activity is suspended.  This is needed
on sparc64 to deactivate the vmspace of the exiting process on all cpus.
Otherwise if another unrelated process gets the exact same vmspace structure
allocated to it (same address), its address space will not be activated
properly.  This seems to fix some spontaneous signal 11 problems with smp
on sparc64.
2002-06-24 15:48:02 +00:00
Jonathan Mini
01ad8a53db Remove unused diagnostic function cread_free_thread().
Approved by:	alfred
2002-06-24 06:22:00 +00:00
Peter Wemm
7022a21abd Update an 'XXX what is this?' type comment about suswintr and fuswintr.
These are 16 bit short values used only by the profiling code.
2002-06-20 07:40:53 +00:00
Peter Wemm
b23619e02a Deorbit suibyte(). It was only used for split address space systems
for supporting UIO_USERISPACE (ie: it wasn't used).
2002-06-20 07:13:35 +00:00
Peter Wemm
8acb9efb5b ia32 %edx return comes from td_retval[1], not td_retval[0]
Obtained from:	dfr
2002-06-20 06:47:44 +00:00
Peter Wemm
6e1f6045c0 Use suword32/64 and fuword32/64 like elsewhere instead of inventing
suhword/fuhword.
2002-06-20 06:45:43 +00:00
Peter Wemm
3800e8732f panic rather than fault and explode if we fail to contigmalloc a kernel
stack.  This is still bad(TM), but at least we have a clue when we get
hit when contigmalloc fails.
2002-06-20 06:25:22 +00:00
Peter Wemm
3c2aff6c15 Use the canonical pmap_{new,dispose,swapin,swapout}_proc() functions,
in this case cut/pasted from sparc64 instead of messing with
contigmalloc where it is not needed.
2002-06-20 06:23:40 +00:00
Peter Wemm
2f9267ec23 Move the "- 1" into the RQB_FFS(mask) macro itself so that
implementations can provide a base zero ffs function if they wish.
This changes
  #define RQB_FFS(mask) (ffs64(mask))
  foo = RQB_FFS(mask) - 1;
to
  #define RQB_FFS(mask) (ffs64(mask) - 1)
  foo = RQB_FFS(mask);
On some platforms we can get the "- 1" for free, eg: those that use the
C code for ffs64().

Reviewed by:	jake (in principle)
2002-06-20 06:21:20 +00:00
John Baldwin
99cca534f3 - Fixup / remove obsolete comments.
- ktrace no longer requires Giant so do ktrace syscall events before and
  after acquiring and releasing Giant, respectively.
- For i386, ia32 syscalls on ia64, powerpc, and sparc64, get rid of the
  goto bad hack and instead use the model on ia64 and alpha were we
  skip the actual syscall invocation if error != 0.  This fixes a bug
  where if we the copyin() of the arguments failed for a syscall that
  was not marked MP safe, we would try to release Giant when we had
  not acquired it.
2002-06-07 05:47:35 +00:00
Marcel Moolenaar
b3e62a9883 Work around a bug in the Linux version of ski, that's specific to
SSC_GET_RTC. This fixes the panic seen shortly after mounting the
root file system.

Thanks to: "K.Sumitani" <ksumitani@mui.biglobe.ne.jp>
2002-06-06 22:49:23 +00:00
Jens Schweikhardt
21dc7d4f57 Fix typo in the BSD copyright: s/withough/without/
Spotted and suggested by:	des
MFC after:	3 weeks
2002-06-02 20:05:59 +00:00
Doug Rabson
99bd783419 Move the definition of ElfN_Hashelt to common headers. The only platform
which has a different definition for this is alpha.
2002-05-30 08:32:18 +00:00
Marcel Moolenaar
60c6f9b332 Remove the definition of struct mca_guid and use the generic
struct uuid defined in <sys/uuid.h>.

Use uuid/UUID instead of guid/GUID to emphasize that the
identifiers are DCE version 1 identifiers and also to avoid
inconsistencies as much a possible.
2002-05-29 05:19:07 +00:00
Jake Burkholder
d2ac231616 Make the run queue parameters machine dependent. Optimize 64 bit
architectures by using a 64 bit word for the bit array which keeps
track of non-empty queues.

Reviewed by:	peter
2002-05-25 01:12:23 +00:00
Marcel Moolenaar
76a0f0f560 o Add records for PCI bus and PCI device errors.
o  Rename mem_platform_id to mem_oem_id.
o  Minor style fixes.
2002-05-22 02:25:06 +00:00
Marcel Moolenaar
96700c9c35 Flesh-out ptrace support. This obviously needs more work. 2002-05-20 05:41:20 +00:00
Marcel Moolenaar
424f97a066 Fix a kernel page fault when accessing user memory. We were
combining too much conditions and as such ended up with the
kernel map instead of the corresponding process map. While
here, remove code to allow access to the stackgap and restyle
slightly to improve readability.

This fix specifically fixes the procfs failure we're having
when reading the process map (cat /proc/curproc/map)
2002-05-19 22:28:57 +00:00
Marcel Moolenaar
d3f6dd2160 It's time to build modules by default. 2002-05-19 20:25:11 +00:00
Marcel Moolenaar
8869375945 Simplify IA64_CMPXCHG to avoid having braced-groups in expressions.
As a minor positive side-effect, code at -O0 is more optimal. As a
minor negative side-effect, certain boundary cases yield no better
code than non-boundary cases. For example, atomic_set_acq_32(p, 0)
does a useless logical OR with value 0. This was previously elimina-
ted as part of if/while optimizations. Non-boundary cases yield
identical code at -O1 and -O2.
2002-05-19 20:19:07 +00:00
Marcel Moolenaar
ce1c850d62 Add record definition for memory checks. 2002-05-19 05:58:24 +00:00
Peter Wemm
bfbdcb3b13 Catch another C++ comment 2002-05-19 05:40:22 +00:00
Marcel Moolenaar
23c12a63cf o Remove namespace pollution from param.h:
-  Don't include ia64_cpu.h and cpu.h
   -  Guard definitions by  _NO_NAMESPACE_POLLUTION
   -  Move definition of KERNBASE to vmparam.h

o  Move definitions of IA64_RR_{BASE|MASK} to vmparam.h
o  Move definitions of IA64_PHYS_TO_RR{6|7} to vmparam.h

o  While here, remove some left-over Alpha references.
2002-05-19 04:42:19 +00:00
Marcel Moolenaar
55f50d95f7 o Move prototypes for restorectx and savectx from cpu.h to pcb.h,
o  Remove Alpha specific contents of struct md_coredump.
2002-05-19 04:14:42 +00:00