Commit Graph

4907 Commits

Author SHA1 Message Date
Ruslan Ermilov
d77f5882e7 Fix NKPT comments to match reality. Note that the current value
of NKPT is no longer enough to run amd64 with 16G of RAM, as it
doesn't have space for mapping a kernel (16M kernel would require
additionally 8 page tables).
2006-11-13 20:33:54 +00:00
Ruslan Ermilov
26af9ac7d0 Fix a comment. 2006-11-13 06:26:57 +00:00
Alan Cox
44b8bd66f9 Make pmap_enter() responsible for setting PG_WRITEABLE instead
of its caller.  (As a beneficial side-effect, a high-contention
acquisition of the page queues lock in vm_fault() is eliminated.)
2006-11-12 21:48:34 +00:00
Ruslan Ermilov
9f70620442 Regen.
Forgotten by:	trhodes
2006-11-11 21:49:08 +00:00
Ruslan Ermilov
7eae4829bf Spelling. 2006-11-07 21:57:18 +00:00
Ruslan Ermilov
81490cbe6f Line up memory amount reporting that got broken when s/real/usable/. 2006-11-07 21:55:39 +00:00
John Baldwin
6ddd7e6a5a Add a new 'union l_sigval' to use in place of 'union sigval' in the
linux siginfo structure.  l_sigval uses a l_uintptr_t for sival_ptr so
that sival_ptr is the right size for linux32 on amd64.  Since no code
currently uses 'lsi_ptr' this is just a cosmetic nit rather than a bug
fix.
2006-11-07 18:53:49 +00:00
John Baldwin
3900a3be21 Remove duplicate IDTVEC macro definition, it's already defined in
<machine/intr_machdep.h>.
2006-11-07 18:46:33 +00:00
Robert Watson
acd3428b7d Sweep kernel replacing suser(9) calls with priv(9) calls, assigning
specific privilege names to a broad range of privileges.  These may
require some future tweaking.

Sponsored by:           nCircle Network Security, Inc.
Obtained from:          TrustedBSD Project
Discussed on:           arch@
Reviewed (at least in part) by: mlaier, jmg, pjd, bde, ceri,
                        Alex Lyashkov <umka at sevcity dot net>,
                        Skip Ford <skip dot ford at verizon dot net>,
                        Antoine Brodin <antoine dot brodin at laposte dot net>
2006-11-06 13:42:10 +00:00
John Birrell
8391a99bf7 Remove the KDTRACE option again because of the complaints about having
it as a default.

For the record, the KDTRACE option caused _no_ additional source files
to be compiled in; certainly no CDDL source files. All it did was to
allow existing BSD licensed kernel files to include one or more CDDL
header files.

By removing this from DEFAULTS, the onus is on a kernel builder to add
the option to the kernel config, possibly by including GENERIC and
customising from there. It means that DTrace won't be a feature
available in FreeBSD by default, which is the way I intended it to be.

Without this option, you can't load the dtrace module (which contains
the dtrace device and the DTrace framework). This is equivalent to
requiring an option in a kernel config before you can load the linux
emulation module, for example.

I think it is a mistake to have DTrace ported to FreeBSD, but not
to have it available to everyone, all the time. The only exception
to this is the companies which distribute systems with FreeBSD embedded.
Those companies will customise their systems anyway. The KDTRACE
option was intended for them, and only them.
2006-11-04 23:50:12 +00:00
John Birrell
1f80cd9398 Build in kernel support for loading DTrace modules by default. This
adds the hooks that DTrace modules register with, and adds a few functions
which have the dtrace_ prefix to allow the DTrace FBT (function boundary
trace) provider to avoid tracing because they are called from the DTtrace
probe context.

Unlike other forms of tracing and debug, DTrace support in the kernel
incurs negligible run-time cost.

I think the only reason why anyone wouldn't want to have kernel support
enabled for DTrace would be due to the license (CDDL) under which DTrace
is released.
2006-11-04 04:58:10 +00:00
John Birrell
3d068827c2 Add a cnputs() function to write a string to the console with
a lock to prevent interspersed strings written from different CPUs
at the same time.

To avoid putting a buffer on the stack or having to malloc one,
space is incorporated in the per-cpu structure. The buffer
size if 128 bytes; chosen because it's the next power of 2 size
up from 80 characters.

String writes to the console are buffered up the end of the line
or until the buffer fills. Then the buffer is flushed to all
console devices.

Existing low level console output via cnputc() is unaffected by
this change. ithread calls to log() are also unaffected to avoid
blocking those threads.

A minor change to the behaviour in a panic situation is that
console output will still be buffered, but won't be written to
a tty as before. This should prevent interspersed panic output
as a number of CPUs panic before we end up single threaded
running ddb.

Reviewed by:	scottl, jhb
MFC after:	2 weeks
2006-11-01 04:54:51 +00:00
Konstantin Belousov
d4d2a400e4 Fix a typo resulting in truncated linux32 signal trampoline code copied
to the usermode. Usually, signal handler segfaulted on return.

Reviewed by:	jhb
MFC after:	3 days
2006-10-31 17:53:02 +00:00
Alexander Leidinger
96ed72ac81 regen after linux_io_* backout 2006-10-29 14:12:44 +00:00
Alexander Leidinger
3680a41902 Backout the linux aio stuff. Several problems where identified and the
dynamic nature (if no native aio code is available, the linux part
returns ENOSYS because of missing requisites) should be solved differently
than it is.

All this will be done in P4.

Not included in this commit is a backout of the changes to the native aio
code (removing static in some places). Those changes (and some more) will
also be needed when the reworked linux aio stuff will reenter the tree.

Requested by:	rwatson
Discussed with:	rwatson
2006-10-29 14:02:39 +00:00
Bruce Evans
6a70163fcc Removed some SMP ifdefs so that using the TSC as a cputime clock is
not completely decided at config time.  Just don't default to using
the TSC if there are multiple active CPUs.  Also, don't default to
using the TSC if it is broken.  SMP ifdefs are still used to disallow
using perfmon since perfmon is always broken if SMP is just configured.

This only helps much for SMP kernels running on 1 CPU.  The overheads
for using the i8254 cputime clock were a bit too high on 486/33's, and
now on multi-GHz CPUs they are usually in the 99-99.9% range.  Switching
from the old default of an i8254 clock to the TSC works poorly because
the overheads are not recalibrated.

Use the same condition for declaring perfmon stuff as for using it.
2006-10-29 09:48:44 +00:00
Bruce Evans
91b4d1bfc2 In the userland .mcount():
- Don't use a frame pointer.  Our callers need a frame pointer, but we
  could only use one to support things that aren't supported.  (These
  things are:
  - profiling of profiling
  - debugging of profiling.  The core ENTRY() macro doesn't support
    forcing a frame pointer for debugging, so don't do more here.)
- Ensure that we are in the text section and have normal alignment.
- Use the normal syntax for `.type'.
2006-10-28 13:12:06 +00:00
Alexander Leidinger
c1ea90bfd3 regen (prctl addition) 2006-10-28 11:24:38 +00:00
Bruce Evans
43f0ea0a27 i386/include/profile.h:
Fixed a syntax error for the (!__KERNEL && !__GNUCLIKE_ASM) case in
rev.1.36.  Apparently, this case has never been reached even by lint.

Submitted by:	stefanf

{amd64,i386}/include/profile.h:
In case the above case is actually reached, break it properly by
providing null support that will fail at link time instead of a stub
that gives wrong (null) profiling at runtime.
2006-10-28 11:03:03 +00:00
Alexander Leidinger
955d762aca MFP4:
Implement prctl().

Submitted by:	rdivacky
Tested with:	LTP
2006-10-28 10:59:59 +00:00
Bruce Evans
853b92dacf In MCOUNT_OVERHEAD(label), actually use the `label' parameter. We were
still using the global label named "profil", and this worked accidentally
because all callers use the same name.
2006-10-28 07:59:11 +00:00
Bruce Evans
3a110062fd Cleaned up includes. <machine/profile.h> was unused. <machine/timerreg.h>
was only used in the GUPROF case, so the messes to get its i386 prerequisites
included shouldn't have been needed.

Fixed some style bugs. Quote #error contents, and don't repeat an #error
directive on amd64.
2006-10-28 06:38:51 +00:00
Bruce Evans
94450a83e8 Removed all traces of HIDENAME() in amd64 and i386 kernel code. Using
this used to be slightly cleaner than using ifdefs in a few places to
support both a.out and elf, but using it now just causes messes and
unportabilities.  It seems to be impossible to implement the elf
HIDENAME() portably in cpp (since token pasting of "." and <name> is
invalid).

*/prof_machdep.c:
- Removed all uses of CNAME().  CNAME() is easy enough to use in pure
  asm code, but using it in inline asm requires messy quoting.  The
  core pure asm code has been hacked on more and all uses of CNAME() in
  it have already gone away.  Just assume the elf convention here too.
- Removed now-uneeded include of <machine/asmacros.h>.
- Removed the workaround for a namespace conflict with this include.
2006-10-28 06:04:29 +00:00
Bruce Evans
447647908c Don't call mexitcount or provide a stub mexitcount to call when
profiling is configured but high resolution profiling is not configured.
Only functions in *.[Ss] called the stub, so efficiency was not
significantly affected.
2006-10-27 14:17:50 +00:00
John Birrell
3750d1ecad Remove the KSE option now that it's in DEFAULTS on these arches/machines.
The 'nooption' kernel config entry has to be used to turn KSE off now.
This isn't my preferred way of dealing with this, but I'll defer to
scottl's experience with the io/mem kernel option change and the grief
experienced over that.

Submitted by:	scottl@
2006-10-26 22:11:35 +00:00
John Birrell
013d6d8cb4 Add 'options KSE' to the kernel config DEFAULTS on all arches/machines
except sun4v.

This change makes the transition from a default to an option more
transparent and is an attempt to head off all the compliants that are
likely from people who don't read UPDATING, based on experience with
the io/mem change.

Submitted by:	scottl@
2006-10-26 22:05:25 +00:00
John Birrell
8460a577a4 Make KSE a kernel option, turned on by default in all GENERIC
kernel configs except sun4v (which doesn't process signals properly
with KSE).

Reviewed by:	davidxu@
2006-10-26 21:42:22 +00:00
Ruslan Ermilov
837f167eb2 Move "device splash" back to MI NOTES and "files", it's MI. 2006-10-23 13:23:14 +00:00
Alan Cox
43200cd3ed Eliminate unnecessary PG_BUSY tests. 2006-10-22 04:18:01 +00:00
Ruslan Ermilov
7971a9bc04 MFi386: 1.13: Fix booting with ps2 keyboards. 2006-10-21 12:52:46 +00:00
Dag-Erling Smørgrav
c43ac89acc Move more MD devices and options out of MI NOTES. 2006-10-20 09:52:27 +00:00
Bruce Evans
045f738b58 Don't show debug registers in "show registers". Special registers should
be displayed specially, and debug registers are among of the least
interesting special registers (far behind %cr3).  The debug registers
are still accessible as variables and displayed in another bogus place
("show watches").
2006-10-20 09:44:21 +00:00
Dag-Erling Smørgrav
c276283866 The VGA_DEBUG option only exists on {amd64,i386,ia64}.
Also remove 'device io' from amd64 NOTES; DEFAULTS takes care of it.
2006-10-20 08:56:26 +00:00
Warner Losh
e54ad0a189 Remove references to pccard.conf 2006-10-19 05:17:55 +00:00
David Xu
5f641fc0fb o Add keyword volatile for user mutex owner field.
o Fix type consistent problem by using type long for old
  umtx and wait channel.
o Rename casuptr to casuword.
2006-10-17 02:24:47 +00:00
John Baldwin
b85360078a Add one more include to fix the case of !DDB and !atpic. 2006-10-16 21:40:46 +00:00
Hiroki Sato
b84baf83b9 Add a newline to the printf().
Spotted by:	Peter Carah <pete@altadena.net>
MFC after:	3 days
2006-10-15 16:52:59 +00:00
Alexander Leidinger
95f2da66d3 regen (linux AIO stuff) 2006-10-15 14:24:10 +00:00
Alexander Leidinger
6a1162d4cd MFP4 (with some minor changes):
Implement the linux_io_* syscalls (AIO). They are only enabled if the native
AIO code is available (either compiled in to the kernel or as a module) at
the time the functions are used. If the AIO stuff is not available there
will be a ENOSYS.

From the submitter:
---snip---
DESIGN NOTES:

1. Linux permits a process to own multiple AIO queues (distinguished by
   "context"), but FreeBSD creates only one single AIO queue per process.
   My code maintains a request queue (STAILQ of queue(3)) per "context",
   and throws all AIO requests of all contexts owned by a process into
   the single FreeBSD per-process AIO queue.

   When the process calls io_destroy(2), io_getevents(2), io_submit(2) and
   io_cancel(2), my code can pick out requests owned by the specified context
   from the single FreeBSD per-process AIO queue according to the per-context
   request queues maintained by my code.

2. The request queue maintained by my code stores contrast information between
   Linux IO control blocks (struct linux_iocb) and FreeBSD IO control blocks
   (struct aiocb). FreeBSD IO control block actually exists in userland memory
   space, required by FreeBSD native aio_XXXXXX(2).

3. It is quite troubling that the function io_getevents() of libaio-0.3.105
   needs to use Linux-specific "struct aio_ring", which is a partial mirror
   of context in user space. I would rather take the address of context in
   kernel as the context ID, but the io_getevents() of libaio forces me to
   take the address of the "ring" in user space as the context ID.

   To my surprise, one comment line in the file "io_getevents.c" of
   libaio-0.3.105 reads:

             Ben will hate me for this

REFERENCE:

1. Linux kernel source code:   http://www.kernel.org/pub/linux/kernel/v2.6/
   (include/linux/aio_abi.h, fs/aio.c)

2. Linux manual pages:         http://www.kernel.org/pub/linux/docs/manpages/
   (io_setup(2), io_destroy(2), io_getevents(2), io_submit(2), io_cancel(2))

3. Linux Scalability Effort:   http://lse.sourceforge.net/io/aio.html
   The design notes:           http://lse.sourceforge.net/io/aionotes.txt

4. The package libaio, both source and binary:
       http://rpmfind.net/linux/rpm2html/search.php?query=libaio
   Simple transparent interface to Linux AIO system calls.

5. Libaio-oracle:              http://oss.oracle.com/projects/libaio-oracle/
   POSIX AIO implementation based on Linux AIO system calls (depending on
   libaio).
---snip---

Submitted by:	Li, Xiao <intron@intron.ac>
2006-10-15 14:22:14 +00:00
Alexander Leidinger
0a62e03542 MFP4 (106538 + 106541):
Implement CLONE_VFORK. This fixes the clone05 LTP test.

Submitted by:	rdivacky
2006-10-15 13:39:40 +00:00
Alexander Leidinger
2482245b0c Revert my previous commit, I mismerged this to the wrong place.
Pointy hat to:	netchild
2006-10-15 13:30:45 +00:00
Alexander Leidinger
21aed094a9 MFP4 (106541): Fix the clone05 test in the LTP.
Submitted by:	rdivacky
2006-10-15 13:25:23 +00:00
Alexander Leidinger
4b3583a354 MFP4 (107144[1]): Implement CLONE_FS on i386[1] and amd64.
Submitted by:	rdivacky	[1]
2006-10-15 13:22:14 +00:00
John Baldwin
d3998dcf2e Move the 2 additional #includes down into the #ifndef DEV_ATPIC section. 2006-10-13 17:31:57 +00:00
John Birrell
e70cbcb5ba Attempt to fix the GENERIC kernel build which has been failing on
tinderbox for a couple of days.
2006-10-13 04:53:22 +00:00
John Baldwin
5d54487ef2 Fix nodevice atpic compile.
Pointy hat to:	jhb
2006-10-12 12:48:21 +00:00
John Baldwin
520ffff83e Change the x86 interrupt code to suspend/resume interrupt controllers
(PICs) rather than interrupt sources.  This allows interrupt controllers
with no interrupt pics (such as the 8259As when APIC is in use) to
participate in suspend/resume.
- Always register the 8259A PICs even if we don't use any of their pins.
- Explicitly reset the 8259As on resume on amd64 if 'device atpic' isn't
  included.
- Add a "dummy" PIC for the local APIC on the BSP to reset the local APIC
  on resume.  This gets suspend/resume working with APIC on UP systems.
  SMP still needs more work to bring the APs back to life.

The MFC after is tentative.

Tested by:	anholt (i386)
Submitted by:	Andrea Bittau <a.bittau at cs.ucl.ac.uk> (3)
MFC after:	1 week
2006-10-10 23:23:12 +00:00
John Baldwin
6e20fe33ba Oops, fix sign bug in #ifdef for value of INTRCNT_COUNT.
PR:		kern/99870
Submitted by:	jkim
MFC after:	3 days
2006-10-10 19:26:35 +00:00
Simon L. B. Nielsen
4517aab293 - Remove SCHED_ULE from GENERIC to better avoid foot-shooting by
unsuspecting users.
- Add a comment in NOTES about experimental status of SCHED_ULE.
- Make warning about experimental status in sched_ule(4) a bit
  stronger.

Suggested and reviewed by:	dougb
Discussed on:			developers
MFC after:			3 days
2006-10-05 20:31:58 +00:00
David Xu
c6511aea86 Move some declaration of 32-bit signal structures into file
freebsd32-signal.h, implement sigtimedwait and sigwaitinfo system calls.
2006-10-05 01:56:11 +00:00
John Birrell
6825d60738 PR:
Submitted by:
Reviewed by:
Approved by:
Obtained from:
MFC after:
Security:
Move the relocation definitions to the common elf header so that DTrace
can use them on one architecture targeted to a different one.

Add the additional ELF types defines in Sun's "Linker and Libraries"
manual.
2006-10-04 21:37:10 +00:00
Poul-Henning Kamp
e5037a18a9 Use utc_offset() where applicable, and hide the internals of it
as static variables.
2006-10-02 18:23:37 +00:00
Poul-Henning Kamp
b69f71eb29 Second part of a little cleanup in the calendar/timezone/RTC handling.
Split subr_clock.c in two parts (by repo-copy):
   subr_clock.c contains generic RTC and calendaric stuff. etc.
   subr_rtc.c contains the newbus'ified RTC interface.

Centralize the machdep.{adjkerntz,disable_rtc_set,wall_cmos_clock}
sysctls and associated variables into subr_clock.c.  They are
not machine dependent and we have generic code that relies on being
present so they are not even optional.
2006-10-02 15:42:02 +00:00
Poul-Henning Kamp
f645b0b51c First part of a little cleanup in the calendar/timezone/RTC handling.
Move relevant variables to <sys/clock.h> and fix #includes as necessary.

Use libkern's much more time- & spamce-efficient BCD routines.
2006-10-02 12:59:59 +00:00
Maxim Sobolev
2c473eaf67 Extend comment explaining why code is conditional at !defined(SCHED_ULE).
Suggested by:	ru
2006-09-27 22:09:35 +00:00
Maxim Sobolev
6e93c19e3d Since ULE doesn't honor hlt_cpus_mask don't compile code that prevents
timer interrupt servicing for disabled HTT cores in ULE case. Should be
probably fixed in ULE code instead, but we have no real maintainer for
ULE to do it.

PR:		103697
2006-09-27 18:51:19 +00:00
Ruslan Ermilov
6c9fdda750 Added COMPAT_FREEBSD6 option. 2006-09-26 12:36:34 +00:00
David Xu
07a8ebcc75 Stop reloading %fs and %gs, since it causes the base address from
GDT to be loaded into FS.base and GS.base, these values of course
are not the values set by sysarch() with I386_SET_FSBASE and
I386_SET_GSBASE, the change fixed a crash for 32bit libthr after
signal handler returned and normal code is accessing thread pointer,
for example: movl %gs:8, %eax.
2006-09-23 13:42:09 +00:00
John Baldwin
d72a078647 Update the ipmi(4) driver:
- Split out the communication protocols into their own files and use
  a couple of function pointers in the softc that the commuication
  protocols setup in their own attach routine.
- Add support for the SSIF interface (talking to IPMI over SMBus).
- Add an ACPI attachment.
- Add a PCI attachment that attaches to devices with the IPMI interface
  subclass.
- Split the ISA attachment out into its own file: ipmi_isa.c.
- Change the code to probe the SMBIOS table for an IPMI entry to just use
  pmap_mapbios() to map the table in rather than trying to setup a fake
  resource on an isa device and then activating the resource to map in the
  table.
- Make bus attachments leaner by adding attach functions for each
  communication interface (ipmi_kcs_attach(), ipmi_smic_attach(), etc.)
  that setup per-interface data.
- Formalize the model used by the driver to handle requests by adding an
  explicit struct ipmi_request object that holds the state of a given
  request and reply for the entire lifetime of the request.  By bundling
  the request into an object, it is easier to add retry logic to the various
  communication backends (as well as eventually support BT mode which uses
  a slightly different message format than KCS, SMIC, and SSIF).
- Add a per-softc lock and remove D_NEEDGIANT as the driver is now MPSAFE.
- Add 32-bit compatibility ioctl shims so you can use a 32-bit ipmitool
  on FreeBSD/amd64.
- Add ipmi(4) to i386 and amd64 NOTES.

Submitted by:	ambrisko (large portions of 2 and 3)
Sponsored by:	IronPort Systems, Yahoo!
MFC after:	6 days
2006-09-22 22:11:29 +00:00
Alexander Kabaev
d9cb97ff9d Use __builtin_va_start instead of __builtin_stdarg_start. GCC4 obsoletes
the former and  __builtin_va_start was present in all GCC version 3.1 and
later.
2006-09-21 01:37:02 +00:00
Wojciech A. Koszek
dec10b39fd Correct 'interrupt interrupt' -> 'interrupt' in the comment.
Requested by:	jhb
Approved by:	cognet (mentor)
2006-09-20 20:52:11 +00:00
David Xu
103c065406 Make cpu_set_upcall_kse() and cpu_set_user_tls() work for 32bit process. 2006-09-17 14:54:14 +00:00
John Baldwin
884ff1813f Add a new ddb command 'show lapic' to dump details about the local APIC
registers for the current CPU.

MFC after:	3 days
2006-09-11 20:12:42 +00:00
John Baldwin
5c15c7e71d Actually hook up the IPI_INVLCACHE IDT vectors backing
pmap_invalidate_cache() in the SMP case so pmap_mapdev() in multiuser
doesn't panic with a trap 30.  I broke this many months ago when I
added pmap_invalidate_cache() as early parts of the PAT work.

Patience from:	jmg
Pointy hat:	jhb
2006-09-11 20:10:42 +00:00
John Baldwin
9914a8cc7d - Fix rman_manage_region() to be a lot more intelligent. It now checks
for overlaps, but more importantly, it collapses adjacent free regions.
  This is needed to cope with BIOSen that split up ports for system devices
  (like IPMI controllers) across multiple system resource entries.
- Now that rman_manage_region() is not so dumb, remove extra logic in the
  x86 nexus drivers to populate the IRQ rman that manually coalesced the
  regions.

MFC after:	1 week
2006-09-11 19:31:52 +00:00
Alexander Leidinger
bb59e63f8f Change futex lock from mutex to sx. Make futex_get atomic (protected by the
futex lock).

Sponsored by:	Google SoC 2006
Submitted by:	rdivacky
Suggested by:	jhb
2006-09-09 16:25:25 +00:00
John Baldwin
f6c48c1932 Use a single constant to define the sizes of the physmap[], phys_avail[],
and dump_avail[] arrays so they are in sync (previously it was possible
to store more entries in the physmap[] then we could store in phys_avail[],
which was pointless).  While I'm here, bump up the length of these tables
to hold 30 entries on amd64 and 16 on i386.  This allows machines with
fairly fragmented memory maps to boot ok (at least one machine would
not boot FreeBSD/i386 but would boot FreeBSD/amd64 because amd64 allowed
for more fragments).

MFC after:	3 days
2006-09-07 15:03:02 +00:00
Maxim Sobolev
e7d33dcbc5 Unbreak in the case when device apic is compiled into non-SMP kernel.
Reported by:	jhay
MFC after:	2 weeks
2006-09-06 22:05:34 +00:00
Maxim Sobolev
23da540855 The FreeBSD by default "disables" hyper-threading cores, by not scheduling
any threads to them. However, it still counts those cores as "active but
permanently idle" when calculating system-wide CPUs statistics. It is
incorrect, since it skews statistics quite a bit and creates real problems
for certain types of applications (monitoring applications for example),
by making them believe that the system does have enough idle CPU resources,
while in fact it does not.

Correct the problem by not calling performance counting routines on "disabled"
cores. The cleaner solution would be to just disable APIC timer interrupts on
those cores completely, but ENOTIME here and it is not clear if the
additional complexity really worth minor performance gain.

Reviewed by:	ssouhlal
Sponsored by:	Sippy Software, Inc.
MFC after:	2 weeks
2006-09-05 17:15:24 +00:00
Alexander Leidinger
4038a816f8 MFi386 parts of rev 1.55 (modulo real MD parts):
- implement CLONE_PARENT semantic
 - lock proc in the currently disabled part of CLONE_THREAD

Submitted by:	rdivacky
2006-08-28 13:09:24 +00:00
David Xu
66e1c26dba Implement casuword32, compare and set user integer, thank Marcel Moolenarr
who wrote the IA64 version of casuword32.
2006-08-28 02:28:15 +00:00
Alexander Leidinger
084556f5d7 regen 2006-08-27 08:58:00 +00:00
Alexander Leidinger
835e506190 Add the linux statfs64 call. This allows Tivoli backup to proceed a little
but further on -current (still not successful, but a step into the right
direction).

Sponsored by:	Google SoC 2006
Submitted by:	rdivacky
Tested by:	Paul Mather <paul@gromit.dlib.vt.edu>
2006-08-27 08:56:54 +00:00
Alexander Leidinger
40f734dd0d Emulate what vfork does instead of using it in linux_vfork. This way
we can do the stuff we need to do with linux processes at fork and
don't panic the kernel at exit of the child.

Submitted by:	rdivacky
Tested with:	tst-vfork* (glibc regression tests)
Tested by:	netchild
2006-08-25 11:59:56 +00:00
Alexander Leidinger
1a28c0df09 Sync the MI parts for amd64 with i386 and remove the corresponding special
handling for amd64 in the common code. The MD parts for amd64 are still
outstanding, but at least this fixes some panics on amd64.

Sponsored by:	Google SoC 2006
Submitted by:	rdivacky
Tested by:	bsam
2006-08-20 13:50:27 +00:00
Alexander Leidinger
29ddc19bbf Get rid of some nested includes.
Sponsored by:	Google SoC 2006
Submitted by:	rdivacky
Noticed by:	jhb
2006-08-19 15:13:01 +00:00
Alexander Leidinger
94cb2ecf79 Move some stuff into headers where they belong.
Sponsored by:	Google SoC 2006
Submitted by:	rdivacky
Noticed by:	jhb, ssouhlal
2006-08-17 21:06:48 +00:00
Alexander Leidinger
c632e9d3cc Initialize the emul sx-lock.
Sponsored by:	Google SoC 2006
Submitted by:	rdivacky
2006-08-17 10:04:49 +00:00
David Xu
55fd8f9e8c Change xorq back to xorl.
Noticed by: bde
2006-08-16 22:22:28 +00:00
Alexander Leidinger
0eef2f8a4e Style fixes to comments.
Sponsored by:	Google SoC 2006
Submitted by:	rdivacky
Noticed by:	jhb, ssouhlal
2006-08-16 18:54:51 +00:00
David Xu
421cb5a9f2 Backout revision 1.117, xorl and xorq have same result, but xorq needs
longer decoding.
2006-08-15 22:43:02 +00:00
John Baldwin
f8f1f7fb85 Regen to propogate <prefix>_AUE_<mumble> changes as well as the earlier
systrace changes.
2006-08-15 17:37:01 +00:00
John Baldwin
df78f6d313 - Remove unused sysvec variables from various syscalls.conf.
- Send the systrace_args files for all the compat ABIs to /dev/null for
  now.  Right now makesyscalls.sh generates a file with a hardcoded
  function name, so it wouldn't work for any of the ABIs anyway.  Probably
  the function name should be configurable via a 'systracename' variable
  and the functions should be stored in a function pointer in the sysvec
  structure.
2006-08-15 17:25:55 +00:00
Alexander Leidinger
7c09e6c0bd Initialize the eventhandlers, mutexes and sx locks.
Sponsored by:	Google SoC 2006
Submitted by:	rdivacky
2006-08-15 14:58:15 +00:00
Alexander Leidinger
77b959aa51 add autogenerated systrace_args stuff for dtrace 2006-08-15 12:56:36 +00:00
Alexander Leidinger
9b44bfc556 Add the linux 2.6.x stuff (not used by default!):
- TLS - complete
 - pid/tid mangling - complete
 - thread area - complete
 - futexes - complete with issues
 - clone() extension - complete with some possible minor issues
 - mq*/timer*/clock* stuff - complete but untested and the mq* stuff is
   disabled when not build as part of the kernel with native FreeBSD mq*
   support (module support for this will come later)

Tested with:
 - linux-firefox - works, tested
 - linux-opera - works, tested
 - linux-realplay - doesnt work, issue with futexes
 - linux-skype - doesnt work, issue with futexes
 - linux-rt2-demo - works, tested
 - linux-acroread - doesnt work, unknown reason (coredump) and sometimes
   issue with futexes
 - various unix utilities in linux-base-gentoo3 and linux-base-fc4:
   everything tried worked

On amd64 not everything is supported like on i386, the catchup is planned for
later when the remaining bugs in the new functions are fixed.

To test this new stuff, you have to run
	sysctl compat.linux.osrelease=2.6.16
to switch back use
	sysctl compat.linux.osrelease=2.4.2

Don't switch while running a linux program, strange things may or may not
happen.

Sponsored by:			Google SoC 2006
Submitted by:			rdivacky
Some suggestions/help by:	jhb, kib, manu@NetBSD.org, netchild
2006-08-15 12:54:30 +00:00
Alexander Leidinger
c107650561 regen 2006-08-15 12:51:45 +00:00
David Xu
2328274aec Because fuword on AMD64 returns 64bit long integer -1 on fault, clear
entire %rax to zero instead of only clearing %eax, otherwise it will
leave garbage data in upper 32 bits.
2006-08-15 12:45:51 +00:00
Alexander Leidinger
b4359bd8e5 Add new syscalls in the linuxolator (only used when the sysctl
compat.linux.osrelease is changed to "2.6.16" or similar).

On amd64 not everything is supported like on i386, the catchup is planned for
later when the remaining bugs in the new functions are fixed.

Sponsored by:	Google SoC 2006
Submitted by:	rdivacky
2006-08-15 12:28:14 +00:00
Alan Cox
c3b182d235 Eliminate an unnecessary initialization from trap_pfault() that also
happens to contain a style error.
2006-08-14 19:53:53 +00:00
John Baldwin
d25fdf539e Don't try to preserve PAT bits in pmap_enter(). We currently on pages that
aren't mapped via pmap_enter() (KVA).  We will eventually support PAT bits
on user pages, but those will require some sort of MI caching mode stored
in the vm_page.

Reviewed by:	alc
2006-08-14 15:39:41 +00:00
Alan Cox
3173042ecc It's not entirely obvious that PGEX_I must be zero if no-execute is neither
supported nor enabled.  Just to be sure, verify that no-execute is enabled
before passing VM_PROT_EXECUTE to vm_fault().

Suggested by: tegge@
2006-08-14 06:15:16 +00:00
John Baldwin
7e9f73f3ed First pass at allowing memory to be mapped using cache modes other than
WB (write-back) on x86 via control bits in PTEs and PDEs (including making
use of the PAT MSR).  Changes include:
- A new pmap_mapdev_attr() function for amd64 and i386 which takes an
  additional parameter (relative to pmap_mapdev()) specifying the cache
  mode for this mapping.  Note that on amd64 only WB mappings are done with
  the direct map, all other modes result in a private mapping.
- pmap_mapdev() on i386 and amd64 now defaults to using UC (uncached)
  mappings rather than WB.  Previously we relied on the BIOS setting up
  MTRR's to enforce memio regions being treated as UC.  This might make
  hw.cbb_start_memory unnecessary in some cases now for example.
- A new pmap_mapbios()/pmap_unmapbios() API has been added to allow places
  that used pmap_mapdev() to map non-device memory (such as ACPI tables)
  to do so using WB as before.
- A new pmap_change_attr() function for amd64 and i386 that changes the
  caching mode for a range of KVA.

Reviewed by:	alc
2006-08-11 19:22:57 +00:00
Alexander Leidinger
50e422f056 Add some more errno mappings (bsd -> linux) and a comment about the status..
Submitted by:	"Intron" <mag@intron.ac>
2006-08-10 22:05:25 +00:00
Alan Cox
079ba18aac Pass VM_PROT_EXECUTE to vm_fault() instead of VM_PROT_READ if the page
fault was caused by an instruction fetch.
2006-08-08 04:01:29 +00:00
Alan Cox
14aaab5329 Eliminate the acquisition and release of the page queues lock around a call
to vm_page_sleep_if_busy().
2006-08-06 06:29:16 +00:00
Alan Cox
f8883c0160 Define the additional page fault error codes that are implemented by amd64. 2006-08-02 16:24:23 +00:00
Alan Cox
78985e424a Complete the transition from pmap_page_protect() to pmap_remove_write().
Originally, I had adopted sparc64's name, pmap_clear_write(), for the
function that is now pmap_remove_write().  However, this function is more
like pmap_remove_all() than like pmap_clear_modify() or
pmap_clear_reference(), hence, the name change.

The higher-level rationale behind this change is described in
src/sys/amd64/amd64/pmap.c revision 1.567.  The short version is that I'm
trying to clean up and fix our support for execute access.

Reviewed by: marcel@ (ia64)
2006-08-01 19:06:06 +00:00
David E. O'Brien
a4755e0e13 Correct spelling of 3DNow!. 2006-08-01 01:23:39 +00:00
Marcel Moolenaar
302981e72a Remove sio(4) and related options from MI files to amd64, i386
and pc98 MD files. Remove nodevice and nooption lines specific
to sio(4) from ia64, powerpc and sparc64 NOTES. There were no
such lines for arm yet.
sio(4) is usable on less than half the platforms, not counting
a future mips platform. Its presence in MI files is therefore
increasingly becoming a burden.
2006-07-29 18:38:54 +00:00
John Baldwin
cb76d9b05c Retire SYF_ARGMASK and remove both SYF_MPSAFE and SYF_ARGMASK. sy_narg is
now back to just being an argument count.
2006-07-28 20:22:58 +00:00
John Baldwin
91ce2694d1 Regen for MPSAFE flag removal. 2006-07-28 19:08:37 +00:00
John Baldwin
af5bf12239 Now that all system calls are MPSAFE, retire the SYF_MPSAFE flag used to
mark system calls as being MPSAFE:
- Stop conditionally acquiring Giant around system call invocations.
- Remove all of the 'M' prefixes from the master system call files.
- Remove support for the 'M' prefix from the script that generates the
  syscall-related files from the master system call files.
- Don't explicitly set SYF_MPSAFE when registering nfssvc.
2006-07-28 19:05:28 +00:00
John Baldwin
e0b4add8d8 Various fixes to comments in the syscall master files including removing
cruft from the audit import and adding mention of COMPAT4 to freebsd32.
2006-07-28 18:55:18 +00:00
John Baldwin
22ea1bc57a Unify the checking for lock misbehavior in the various syscall()
implementations and adjust some of the checks while I'm here:
- Add a new check to make sure we don't return from a syscall in a critical
  section.
- Add a new explicit check before userret() to make sure we don't return
  with any locks held.  The advantage here is that we can include the
  syscall number and name in syscall() whereas that info is not available
  in userret().
- Drop the mtx_assert()'s of sched_lock and Giant.  They are replaced by
  the more general checks just added.

MFC after:	2 weeks
2006-07-27 22:32:30 +00:00
John Baldwin
0c5d1dbd43 Add KTR_SYSC tracing to the syscall() implementations that didn't have it
yet.

MFC after:	1 week
2006-07-27 21:25:50 +00:00
John Baldwin
00f1856905 Add missing ptrace(2) system-call stops to various syscall()
implementations.

MFC after:	1 week
2006-07-27 19:50:16 +00:00
John Baldwin
57b16b0882 Don't allow MAXMEM or hw.physmem to extend the top of memory if our memory
map was obtained from the SMAP.  SMAP is trustworthy, and the memory
extending feature is a band-aid for older systems where FreeBSD's methods
of detecting memory were not always trustworthy.  This fixes the issue
where using hw.physmem could result in the ACPI tables getting trashed
breaking ACPI.

MFC after:	3 days
Tested on:	i386
2006-07-27 19:47:22 +00:00
David Xu
14f5d6fd7d Remove a duplicated line. 2006-07-24 12:24:56 +00:00
Alan Cox
3cad40e517 Add pmap_clear_write() to the interface between the virtual memory
system's machine-dependent and machine-independent layers.  Once
pmap_clear_write() is implemented on all of our supported
architectures, I intend to replace all calls to pmap_page_protect() by
calls to pmap_clear_write().  Why?  Both the use and implementation of
pmap_page_protect() in our virtual memory system has subtle errors,
specifically, the management of execute permission is broken on some
architectures.  The "prot" argument to pmap_page_protect() should
behave differently from the "prot" argument to other pmap functions.
Instead of meaning, "give the specified access rights to all of the
physical page's mappings," it means "don't take away the specified
access rights from all of the physical page's mappings, but do take
away the ones that aren't specified."  However, owing to our i386
legacy, i.e., no support for no-execute rights, all but one invocation
of pmap_page_protect() specifies VM_PROT_READ only, when the intent
is, in fact, to remove only write permission.  Consequently, a
faithful implementation of pmap_page_protect(), e.g., ia64, would
remove execute permission as well as write permission.  On the other
hand, some architectures that support execute permission have
basically ignored whether or not VM_PROT_EXECUTE is passed to
pmap_page_protect(), e.g., amd64 and sparc64.  This change represents
the first step in replacing pmap_page_protect() by the less subtle
pmap_clear_write() that is already implemented on amd64, i386, and
sparc64.

Discussed with: grehan@ and marcel@
2006-07-20 17:48:41 +00:00
Alan Cox
e4cec28398 Now that free_pv_entry() accesses the pmap, call free_pv_entry() in
pmap_remove_all() before rather than after the pmap is unlocked.  At
present, the page queues lock provides sufficient sychronization.  In the
future, the page queues lock may not always be held when free_pv_entry() is
called.
2006-07-17 03:10:17 +00:00
Jung-uk Kim
0758eaa227 Sync specialreg.h changes between amd64 and i386 with few fixes. 2006-07-13 16:09:40 +00:00
John Baldwin
19e9205a23 Simplify the pager support in DDB. Allowing different db commands to
install custom pager functions didn't actually happen in practice (they
all just used the simple pager and passed in a local quit pointer).  So,
just hardcode the simple pager as the only pager and make it set a global
db_pager_quit flag that db commands can check when the user hits 'q' (or a
suitable variant) at the pager prompt.  Also, now that it's easy to do so,
enable paging by default for all ddb commands.  Any command that wishes to
honor the quit flag can do so by checking db_pager_quit.  Note that the
pager can also be effectively disabled by setting $lines to 0.

Other fixes:
- 'show idt' on i386 and pc98 now actually checks the quit flag and
  terminates early.
- 'show intr' now actually checks the quit flag and terminates early.
2006-07-12 21:22:44 +00:00
Jung-uk Kim
444576c0c4 Add two new CPUID bits for AMD CPUs, i. e., SVM and extended APIC register. 2006-07-12 06:04:12 +00:00
John Baldwin
90aff9de2d Regen. 2006-07-11 20:55:23 +00:00
John Baldwin
be5747d5b5 - Add conditional VFS Giant locking to getdents_common() (linux ABIs),
ibcs2_getdents(), ibcs2_read(), ogetdirentries(), svr4_sys_getdents(),
  and svr4_sys_getdents64() similar to that in getdirentries().
- Mark ibcs2_getdents(), ibcs2_read(), linux_getdents(), linux_getdents64(),
  linux_readdir(), ogetdirentries(), svr4_sys_getdents(), and
  svr4_sys_getdents64() MPSAFE.
2006-07-11 20:52:08 +00:00
Matt Jacob
086ba9f74f Make the firmware assist driver resident in
preparation for isp using it.
2006-07-09 16:40:31 +00:00
John Baldwin
ec982ae761 Regen. 2006-07-06 21:43:14 +00:00
John Baldwin
ad6d226d43 - Protect the list of linux ioctl handlers with an sx lock.
- Hold Giant while calling linux ioctl handlers for now as they aren't all
  known to be MPSAFE yet.
- Mark linux_ioctl() MPSAFE.
2006-07-06 21:42:36 +00:00
Alan Cox
9a147235a5 Make two simplifications to pmap_ts_referenced(): Eliminate an unnecessary
test and exit the loop in a shorter way.
2006-07-06 06:17:08 +00:00
Alan Cox
7eb8cd27f8 pmap_clear_ptes() is already convoluted. This will worsen with the
implementation of superpages.  Eliminate it and add pmap_clear_write().

There are no functional changes.  Checked by: md5
2006-07-05 07:04:31 +00:00
David Xu
20197a8c49 Temporarily remove SCHED_CORE, it seems I have so many works can do now,
one example is POSIX priority mutex for libthr.
2006-07-05 02:32:55 +00:00
Alan Cox
da536e6348 Correct an error in the new pmap_collect(), thus only affecting HEAD.
Specifically, the pv entry was always being freed to the caller's pmap
instead of the pmap to which the pv entry belongs.
2006-07-02 18:22:47 +00:00
Alan Cox
87e9885fe4 Tidy up pmap_ts_referenced(): Eliminate excessive white space. Eliminate
an initialized but otherwise unused variable.  Explicitly check a pointer
against NULL.

There are no functional changes.  Checked by: md5
2006-07-01 23:43:54 +00:00
Alan Cox
ad84c5de83 Eliminate the remaining uses of "register".
Convert the remaining K&R-style function declarations to ANSI-style.
2006-07-01 05:01:05 +00:00
John Baldwin
cec34dbf79 Regen. 2006-06-27 18:32:16 +00:00
John Baldwin
49d409a108 - Add a kern_semctl() helper function for __semctl(). It accepts a pointer
to a copied-in copy of the 'union semun' and a uioseg to indicate which
  memory space the 'buf' pointer of the union points to.  This is then used
  in linux_semctl() and svr4_sys_semctl() to eliminate use of the stackgap.
- Mark linux_ipc() and svr4_sys_semsys() MPSAFE.
2006-06-27 18:28:50 +00:00
John Baldwin
0cceebeeb2 Regen. 2006-06-27 14:47:08 +00:00
John Baldwin
597d608f86 - Expand the scope of Giant some in mount(2) to protect the vfsp structure
from going away.  mount(2) is now MPSAFE.
- Expand the scope of Giant some in unmount(2) to protect the mp structure
  (or rather, to handle concurrent unmount races) from going away.
  umount(2) is now MPSAFE, as well as linux_umount() and linux_oldumount().
- nmount(2) and linux_mount() were already MPSAFE.
2006-06-27 14:46:31 +00:00
Alan Cox
8e0e1e2239 Correct a very old and very obscure bug: vmspace_fork() calls
pmap_copy() if the mapping is VM_INHERIT_SHARE.  Suppose the mapping
is also wired.  vmspace_fork() clears the wiring attributes in the vm
map entry but pmap_copy() copies the PG_W attribute in the PTE.  I
don't think this is catastrophic.  It blocks pmap_remove_pages() from
destroying the mapping and corrupts the pmap's wiring count.

This revision fixes the problem by changing pmap_copy() to clear the
PG_W attribute.

Reviewed by: tegge@
2006-06-27 04:28:23 +00:00
David E. O'Brien
bfc788c283 Add a pure open source nForce Ethernet driver, under BSDL.
This driver was ported from OpenBSD by Shigeaki Tagashira
<shigeaki@se.hiroshima-u.ac.jp> and posted at
http://www.se.hiroshima-u.ac.jp/~shigeaki/software/freebsd-nfe.html
It was additionally cleaned up by me.
It is still a work-in-progress and thus is purposefully not in GENERIC.
And it conflicts with nve(4), so only one should be loaded.
2006-06-26 23:41:07 +00:00
Sergey Babkin
d81175c738 Backed out the change by request from rwatson.
PR:		kern/14584
2006-06-26 22:03:22 +00:00
John Baldwin
b820787fb3 Regen. 2006-06-26 18:37:36 +00:00
John Baldwin
cf837b8943 linux_brk() is MPSAFE. 2006-06-26 18:36:16 +00:00
Alan Cox
feb0c348cf Eliminate a comment that became stale after revision 1.540.
Wrap a nearby line.
2006-06-25 22:22:37 +00:00
Sergey Babkin
7a799f1ef0 The common UID/GID space implementation. It has been discussed on -arch
in 1999, and there are changes to the sysctl names compared to PR,
according to that discussion. The description is in sys/conf/NOTES.
Lines in the GENERIC files are added in commented-out form.
I'll attach the test script I've used to PR.

PR:		kern/14584
Submitted by:	babkin
2006-06-25 18:37:44 +00:00
Alexander Leidinger
adc250e2c5 Commit the DUMMY stuff (printing messages for missing syscalls) for amd64 too.
Submitted by:	rdivacky
Sponsored by:	Google SoC 2006
Noticed by:	jkim
Pointyhat to:	netchild
2006-06-21 08:45:40 +00:00
Alan Cox
f05446648b Change get_pv_entry() such that the call to vm_page_alloc() specifies
VM_ALLOC_NORMAL instead of VM_ALLOC_SYSTEM when try is TRUE.  In other
words, when get_pv_entry() is permitted to fail, it no longer tries as
hard to allocate a page.

Change pmap_enter_quick_locked() to fail rather than wait if it is
unable to allocate a page table page.  This prevents a race between
pmap_enter_object() and the page daemon.  Specifically, an inactive
page that is a successor to the page that was given to
pmap_enter_quick_locked() might become a cache page while
pmap_enter_quick_locked() waits and later pmap_enter_object() maps
the cache page violating the invariant that cache pages are never
mapped.  Similarly, change
pmap_enter_quick_locked() to call pmap_try_insert_pv_entry() rather
than pmap_insert_entry().  Generally speaking,
pmap_enter_quick_locked() is used to create speculative mappings.  So,
it should not try hard to allocate memory if free memory is scarce.

Add an assertion that the object containing m_start is locked in
pmap_enter_object().  Remove a similar assertion from
pmap_enter_quick_locked() because that function no longer accesses the
containing object.

Remove a stale comment.

Reviewed by: ups@
2006-06-20 20:52:11 +00:00
Alexander Leidinger
aff681d258 regen after change to syscalls.master 2006-06-20 20:41:29 +00:00
Alexander Leidinger
502195ac72 Switch to using the DUMMY infrastructure instead of UNIMPL for the new
syscalls. This way there will be a log message printed to the console
(this time for real).

Note: UNIMPL should be used for syscalls we do not implement ever, e.g.
syscalls to load linux kernel modules.

Submitted by:	rdivacky
Sponsored by:	Goole SoC 2006
P4 IDs:		99600, 99602
2006-06-20 20:38:44 +00:00
Yaroslav Tykhiy
15a901e263 We no longer need to disable interrupts in MD trap machinery
when we're about to call kdb_trap() because the latter MI
function can disable interrupts by itself now.

Pointed out by:	bde
X-MFC remark:	depends on kern/subr_kdb.c#1.18
Sponsored by:	RiNet (Cronyx Plus LLC)
2006-06-20 12:44:21 +00:00
David Xu
7da6810b11 Add variable cpu_mxcsr_mask to save valid bits of mxcsr register. 2006-06-19 22:59:28 +00:00
David Xu
4d70df3fee MFi386:
Use the method described in IA-32 Intel Architecture Software
	Developer's Manual chapter 11.6.6 to get valid mxcsr bits,
	use the mxcsr mask to clear invalid bits passed by user code.
2006-06-19 22:36:01 +00:00
Alexander Leidinger
28a3ae7f88 Remove COMPAT_43 from GENERIC (and other kernel configs). For amd64 there's
an explicit comment that it's needed for the linuxolator. This is not the
case anymore. For all other architectures there was only a "KEEP THIS".
I'm (and other people too) running a COMPAT_43-less kernel since it's not
necessary anymore for the linuxolator. Roman is running such a kernel for a
for longer time. No problems so far. And I doubt other (newer than ia32
or alpha) architectures really depend on it.

This may result in a small performance increase for some workloads.

If the removal of COMPAT_43 results in a not working program, please
recompile it and all dependencies and try again before reporting a
problem.

The only place where COMPAT_43 is needed (as in: does not compile without
it) is in the (outdated/not usable since too old) svr4 code.

Note: this does not remove the COMPAT_43TTY option.

Nagging by:	rdivacky
2006-06-15 19:58:53 +00:00
Stephan Uphoff
2053c12705 Remove mpte optimization from pmap_enter_quick().
There is a race with the current locking scheme and removing
it should have no measurable performance impact.
This fixes page faults leading to panics in pmap_enter_quick_locked()
on amd64/i386.

Reviewed by: alc,jhb,peter,ps
2006-06-15 01:01:06 +00:00
Alexander Leidinger
4946fe7c4d regen after MFP4 (soc2006/rdivacky_linuxolator) of syscalls.master
P4-Changes:	similar to 98673 and 98675 but regenerated locally
Sponsored by:	Google SoC 2006
Submitted by:	rdivacky
2006-06-13 18:48:30 +00:00
Alexander Leidinger
c8b579c182 MFP4 (soc2006/rdivacky_linuxolator)
Update of syscall.master:
	o	Adding of several new dummy syscalls (268-310)
	o	Synchronization of amd64 syscall.master with i386 one
	o	Auditing added to amd64 syscall.master
	o	Change auditing type for lstat syscall (bugfix). [1]

P4-Changes:	98672, 98674
Noticed by:	rwatson [1]
Sponsored by:	Google SoC 2006
Submitted by:	rdivacky
2006-06-13 18:43:55 +00:00
David Xu
b41f1452d9 Add scheduler CORE, the work I have done half a year ago, recent,
I picked it up again. The scheduler is forked from ULE, but the
algorithm to detect an interactive process is almost completely
different with ULE, it comes from Linux paper "Understanding the
Linux 2.6.8.1 CPU Scheduler", although I still use same word
"score" as a priority boost in ULE scheduler.

Briefly, the scheduler has following characteristic:
1. Timesharing process's nice value is seriously respected,
   timeslice and interaction detecting algorithm are based
   on nice value.
2. per-cpu scheduling queue and load balancing.
3. O(1) scheduling.
4. Some cpu affinity code in wakeup path.
5. Support POSIX SCHED_FIFO and SCHED_RR.
Unlike scheduler 4BSD and ULE which using fuzzy RQ_PPQ, the scheduler
uses 256 priority queues. Unlike ULE which using pull and push, the
scheduelr uses pull method, the main reason is to let relative idle
cpu do the work, but current the whole scheduler is protected by the
big sched_lock, so the benefit is not visible, it really can be worse
than nothing because all other cpu are locked out when we are doing
balancing work, which the 4BSD scheduelr does not have this problem.
The scheduler does not support hyperthreading very well, in fact,
the scheduler does not make the difference between physical CPU and
logical CPU, this should be improved in feature. The scheduler has
priority inversion problem on MP machine, it is not good for
realtime scheduling, it can cause realtime process starving.
As a result, it seems the MySQL super-smack runs better on my
Pentium-D machine when using libthr, despite on UP or SMP kernel.
2006-06-13 13:12:56 +00:00
John Baldwin
e3d7caf487 Enable a few more things in x86 NOTES to get broader LINT coverage:
- Turn on iwi(4), ipw(4), and ndis(4) on amd64 and i386.
- Turn on ral(4) and ural(4) on i386, pc98, and amd64.
2006-06-12 20:38:17 +00:00
Alan Cox
b74a62d602 Don't invalidate the TLB in pmap_qenter() unless the old mapping was valid.
Most often, it isn't.

Reviewed by: tegge@
2006-06-12 20:05:27 +00:00
Warner Losh
78878cef94 Add the ability to subset the devices that UART pulls in. This allows
the arm to compile without all the extras that don't appear, at least
not in the flavors of ARM I deal with.  This helps us save about 100k.

If I've botched the available devices on a platform, please let me
know and I'll correct ASAP.
2006-06-12 04:21:50 +00:00
Alan Cox
ce142d9ec0 Introduce the function pmap_enter_object(). It maps a sequence of resident
pages from the same object.  Use it in vm_map_pmap_enter() to reduce the
locking overhead of premapping objects.

Reviewed by: tegge@
2006-06-05 20:35:27 +00:00
Mike Silbersack
f25d341cfb After much discussion with mjacob and scottl, change bus_dmamem_alloc so
that it just warns the user with a printf when it misaligns a piece
of memory that was requested through a busdma tag.

Some drivers (such as mpt, and probably others) were asking for alignments
that could not be satisfied, but as far as driver operation was concerned,
that did not matter.  In the theory that other drivers will fall into
this same category, we agreed that panicing or making the allocation
fail will cause more hardship than is necessary.  The printf should
be sufficient motivation to get the driver glitch fixed.
2006-06-01 04:49:29 +00:00
Matt Jacob
aa57a87a56 Turn the panic on not being able to meet alignment constraints
in bus_dmamem_alloc into the more reasonable EINVAL return.

Also, reclaim memory allocated but then not used if we had
an error return.
2006-05-31 00:37:56 +00:00
Mike Silbersack
3d31890277 MFi386 rev 1.78:
Add a quick hack to ensure that bus_dmamem_alloc properly aligns
small allocations with large alignment requirements.

Add a panic to detect cases where we've still failed to properly align.
2006-05-28 18:31:32 +00:00
Maxim Sobolev
aa1807d5d6 Move clock_lock prototype into <machine/clock.h>, where it is more
appropriate.

Discussed with:	jhb
2006-05-19 18:53:50 +00:00
Marius Strobl
8df071afd9 Add le(4). I could actually only test it on alpha, i386 and sparc64 but
given that this includes the more problematic platforms I see no reason
why it shouldn't also work on amd64 and ia64.
2006-05-17 20:45:45 +00:00
Poul-Henning Kamp
c40da00ca3 Since DELAY() was moved, most <machine/clock.h> #includes have been
unnecessary.
2006-05-16 14:37:58 +00:00
Ruslan Ermilov
155d9f6a98 Kill more references to lnc(4).
Submitted by:	grep(1)
2006-05-16 12:15:39 +00:00
Marius Strobl
055abe9af2 Remove some remnants of lnc(4). 2006-05-14 18:49:25 +00:00
Poul-Henning Kamp
5405ab4889 Clean out sysctl machdep.* related defines.
The cmos clock related stuff should really be in MI code.
2006-05-11 17:29:25 +00:00
Alexander Leidinger
ba5bd0001c regen (linux rt_sigpending) 2006-05-10 18:19:51 +00:00
Alexander Leidinger
17138b619c Implement rt_sigpending in the linuxolator.
PR:		92671
Submitted by:	Markus Niemist"o <markus.niemisto@gmx.net>
2006-05-10 18:17:29 +00:00
Doug Ambrisko
32397ce071 Add in linsysfs. A linux 2.6 like sys filesystem to pacify the Linux
LSI MegaRAID SAS utility.

Sponsored by:		IronPort Systems
Man page help from:	brueffer
2006-05-09 22:27:01 +00:00
Doug Ambrisko
387196bf56 Forgot the amd/linux32 part since sys/*/linux didn't match :-(
Pointed out by:	Alexander (thanks)
2006-05-06 17:26:45 +00:00
Sam Leffler
57d6ae0689 add ath and wlan crypto support
MFC after:	1 month
2006-05-03 18:15:36 +00:00
Scott Long
8d59dfff98 Allow bus_dmamap_load() to pass ENOMEM back to the caller. This puts it into
conformance with the mbuf and uio load routines.  ENOMEM can only happen
with BUS_DMA_NOWAIT is passed in, thus the deferals are disabled.  I don't
like doing this, but fixing this fixes assumptions in other important drivers,
which is a net benefit for now.
2006-05-03 04:14:17 +00:00
John Baldwin
2b8a339c7e Add various constants for the PAT MSR and the PAT PTE and PDE flags.
Initialize the PAT MSR during boot to map PAT type 2 to Write-Combining
(WC) instead of Uncached (UC-).

MFC after:	1 month
2006-05-01 22:07:00 +00:00
John Baldwin
4ac60df584 Add a new 'pmap_invalidate_cache()' to flush the CPU caches via the
wbinvd() instruction.  This includes a new IPI so that all CPU caches on
all CPUs are flushed for the SMP case.

MFC after:	1 month
2006-05-01 21:36:47 +00:00
Alan Cox
e9ba21a5bb Eliminate unnecessary, recursive acquisitions and releases of the page
queues lock by free_pv_entry() and pmap_remove_pages().

Reduce the scope of the page queues lock in pmap_remove_pages().
2006-04-29 00:59:15 +00:00
Marcel Moolenaar
64220a7e28 Rewrite of puc(4). Significant changes are:
o  Properly use rman(9) to manage resources. This eliminates the
   need to puc-specific hacks to rman. It also allows devinfo(8)
   to be used to find out the specific assignment of resources to
   serial/parallel ports.
o  Compress the PCI device "database" by optimizing for the common
   case and to use a procedural interface to handle the exceptions.
   The procedural interface also generalizes the need to setup the
   hardware (program chipsets, program clock frequencies).
o  Eliminate the need for PUC_FASTINTR. Serdev devices are fast by
   default and non-serdev devices are handled by the bus.
o  Use the serdev I/F to collect interrupt status and to handle
   interrupts across ports in priority order.
o  Sync the PCI device configuration to include devices found in
   NetBSD and not yet merged to FreeBSD.
o  Add support for Quatech 2, 4 and 8 port UARTs.
o  Add support for a couple dozen Timedia serial cards as found
   in Linux.
2006-04-28 21:21:53 +00:00
Scott Long
27aafcda76 Enable the rr232x driver for amd64. 2006-04-28 05:23:10 +00:00
Alan Cox
7dece6c7d9 In general, bits in the page directory entry (PDE) and the page table
entry (PTE) have the same meaning.  The exception to this rule is the
eighth bit (0x080).  It is the PS bit in a PDE and the PAT bit in a
PTE.  This change avoids the possibility that pmap_enter() confuses a
PAT bit with a PS bit, avoiding a panic().

Eliminate a diagnostic printf() from the i386 pmap_enter() that serves
no current purpose, i.e., I've seen no bug reports in the last two
years that are helped by this printf().

Reviewed by: jhb
2006-04-27 21:26:25 +00:00
Peter Wemm
0be8b8cee8 Move vm.pmap.pv_entry_count out from the PV_STATS ifdefs. It is always
available and is a real counter, not a statistic.
2006-04-26 21:34:07 +00:00
Jung-uk Kim
daea0aad84 Check if reported HTT cores are physical cores. This commit does not
affect AMD CPUs at all because HTT bit is disabled earlier.  Intel
multicore CPUs and ULE scheduler may be affected.
2006-04-25 00:06:37 +00:00
Jung-uk Kim
091c9b4961 Add another Intel CPU feature flag, xTPR (Send Task Priority Messages). 2006-04-24 22:56:57 +00:00
Jung-uk Kim
cf24d86bcc Check if deterministic cache parameters leaf is valid before use. 2006-04-24 22:23:52 +00:00
Colin Percival
8b4553119e Adjust dangerous-shared-cache-detection logic from "all shared data
caches are dangerous" to "a shared L1 data cache is dangerous".  This
is a compromise between paranoia and performance: Unlike the L1 cache,
nobody has publicly demonstrated a cryptographic side channel which
exploits the L2 cache -- this is harder due to the larger size, lower
bandwidth, and greater associativity -- and prohibiting shared L2
caches turns Intel Core Duo processors into Intel Core Solo processors.

As before, the 'machdep.hyperthreading_allowed' sysctl will allow even
the L1 data cache to be shared.

Discussed with:	jhb, scottl
Security:	See FreeBSD-SA-05:09.htt for background material.
2006-04-24 21:17:01 +00:00
Xin LI
3b28c0c6f9 Move AHC_REG_PRETTY_PRINT and AHD_REG_PRETTY_PRINT below
their corresponding devices.
2006-04-24 08:44:34 +00:00
Peter Wemm
9bbf94367c Oops. Minidumps were developed on 6.x, in without the small pv entry code.
Add some strategic dump_add_page()/dump_drop_page() lines to include pv
chunks in the minidumps - these operate in the direct map region like UMA.
2006-04-21 04:50:18 +00:00
Peter Wemm
c0345a84aa Introduce minidumps. Full physical memory crash dumps are still available
via the debug.minidump sysctl and tunable.

Traditional dumps store all physical memory.  This was once a good thing
when machines had a maximum of 64M of ram and 1GB of kvm.  These days,
machines often have many gigabytes of ram and a smaller amount of kvm.
libkvm+kgdb don't have a way to access physical ram that is not mapped
into kvm at the time of the crash dump, so the extra ram being dumped
is mostly wasted.

Minidumps invert the process.  Instead of dumping physical memory in
in order to guarantee that all of kvm's backing is dumped, minidumps
instead dump only memory that is actively mapped into kvm.

amd64 has a direct map region that things like UMA use.  Obviously we
cannot dump all of the direct map region because that is effectively
an old style all-physical-memory dump.  Instead, introduce a bitmap
and two helper routines (dump_add_page(pa) and dump_drop_page(pa)) that
allow certain critical direct map pages to be included in the dump.
uma_machdep.c's allocator is the intended consumer.

Dumps are a custom format.  At the very beginning of the file is a header,
then a copy of the message buffer, then the bitmap of pages present in
the dump, then the final level of the kvm page table trees (2MB mappings
are expanded into a 4K page mappings), then the sparse physical pages
according to the bitmap.  libkvm can now conveniently access the kvm
page table entries.

Booting my test 8GB machine, forcing it into ddb and forcing a dump
leads to a 48MB minidump.  While this is a best case, I expect minidumps
to be in the 100MB-500MB range.  Obviously, never larger than physical
memory of course.

minidumps are on by default.  It would want be necessary to turn them off
if it was necessary to debug corrupt kernel page table management as that
would mess up minidumps as well.

Both minidumps and regular dumps are supported on the same machine.
2006-04-21 04:24:50 +00:00
Warner Losh
59b8f529ca Set the rid for a resoruce allocated with rman_reserve_resource. 2006-04-20 04:16:34 +00:00
Colin Percival
2652af563e Correct a local information leakage bug affecting AMD FPUs.
Security:	FreeBSD-SA-06:14.fpu
2006-04-19 07:00:19 +00:00
Peter Wemm
714d4fe9b6 If we're doing a try-alloc of a pv entry and give up early, do not forget
to reduce the pv_entry_count counter.  This was found by Tor Egge.  In the
same email, Tor also pointed out the pv_stats problem in the previous
commit, but I'd forgotten about it until I went looking for this email
about this allocation problem.
2006-04-18 20:17:32 +00:00
Peter Wemm
bac58593f1 pv_entry_count is more than a statistic. It is used for resource limiting.
Do not compile out its counter updates if pv entry stats are turned off.
2006-04-18 20:11:00 +00:00
Alan Cox
ad740f9081 Include opt_pmap.h for PMAP_SHPGPERPROC.
PR: 94509
2006-04-13 03:31:48 +00:00
Alan Cox
826c207263 Retire pmap_track_modified(). We no longer need it because we do not
create managed mappings within the clean submap.  To prevent regressions,
add assertions blocking the creation of managed mappings within the clean
submap.

Reviewed by: tegge
2006-04-12 04:22:52 +00:00
Paul Saab
d8636a9ab7 Hook bce up to the build 2006-04-10 20:04:22 +00:00
John Baldwin
907d4d7f45 Cache the value of the lower half of each I/O APIC redirection table entry
so that we only have to do an ioapic_write() instead of an ioapic_read()
followed by an ioapic_write() every time we mask and unmask level triggered
interrupts.  This cuts the execution time for these operations roughly in
half.

Profiled by:	Paolo Pisati <p.pisati@oltrelinux.com>
MFC after:	1 week
2006-04-05 20:43:19 +00:00
Peter Wemm
2e4548288a Convert pv_entry_frees and pv_entry_allocs stats counters from int to long,
they wrap way too quickly.
2006-04-04 20:17:35 +00:00
Marcel Moolenaar
b1fb1bb19a Sync with i386: Map exceptions to signals in gdb_cpu_signal() so
that kgdb(1) gets a SIGTRAP when it needs to.

Pointed out by: grehan@
2006-04-04 03:00:20 +00:00
Marcel Moolenaar
470d831703 The PC is register 16, not 18.
Pointed out by: grehan@
2006-04-04 02:44:51 +00:00
Marcel Moolenaar
bfcdefd8aa Eliminate HAVE_STOPPEDPCBS. On ia64 the PCPU holds a pointer to the
PCB in which the context of stopped CPUs is stored. To access this
PCB from KDB, we introduce a new define, called KDB_STOPPEDPCB. The
definition, when present, lives in <machine/kdb.h> and abstracts
where MD code saves the context. Define KDB_STOPPEDPCB on i386,
amd64, alpha and sparc64 in accordance to previous code.
2006-04-03 22:51:47 +00:00
Peter Wemm
68ac481184 Shrink the amd64 pv entry from 48 bytes to about 24 bytes. On a machine
with large mmap files mapped into many processes, this saves hundreds of
megabytes of ram.
pv entries were individually allocated and had two tailq entries and two
pointers (or addresses).  Each pv entry was linked to a vm_page_t and
a process's address space (pmap).  It had the virtual address and a
pointer to the pmap.
This change replaces the individual allocation with a per-process
allocation system.  A page ("pv chunk") is allocated and this provides
168 pv entries for that process.  We can now eliminate one of the 16 byte
tailq entries because we can simply iterate through the pv chunks to find
all the pv entries for a process.  We can eliminate one of the 8 byte
pointers because the location of the pv entry implies the containing
pv chunk, which has the pointer.  After overheads from the pv chunk
bitmap and tailq linkage, this works out that each pv entry has an
effective size of 24.38 bytes.

Future work still required, and other problems:
* when running low on pv entries or system ram, we may need to defrag
  the chunk pages and free any spares.  The stats (vm.pmap.*) show that
  this doesn't seem to be that much of a problem, but it can be done if
  needed.
* running low on pv entries is now a much bigger problem.  The old
  get_pv_entry() routine just needed to reclaim one other pv entry.
  Now, since they are per-process, we can only use pv entries that are
  assigned to our current process, or by stealing an entire page worth
  from another process.  Under normal circumstances, the pmap_collect()
  code should be able to dislodge some pv entries from the current
  process.  But if needed, it can still reclaim entire pv chunk pages
  from other processes.
* This should port to i386 really easily, except there it would reduce
  pv entries from 24 bytes to about 12 bytes.

(I have integrated Alan's recent changes.)
2006-04-03 21:36:01 +00:00
Peter Wemm
b9eee07e36 Remove the unused sva and eva arguments from pmap_remove_pages(). 2006-04-03 21:16:10 +00:00
Alan Cox
9c6a71e4ca Introduce pmap_try_insert_pv_entry(), a function that conditionally creates
a pv entry if the number of entries is below the high water mark for pv
entries.

Use pmap_try_insert_pv_entry() in pmap_copy() instead of
pmap_insert_entry().  This avoids possible recursion on a pmap lock in
get_pv_entry().

Eliminate the explicit low-memory checks in pmap_copy().  The check that
the number of pv entries was below the high water mark was largely
ineffective because it was located in the outer loop rather than the
inner loop where pv entries were allocated.  Instead of checking, we
attempt the allocation and handle the failure.

Reviewed by: tegge
Reported by: kris
MFC after: 5 days
2006-04-02 05:45:05 +00:00
Maksim Yevmenkin
b643101293 Add kbdmux(4) to GENERIC on amd64
Requested by:	scottl
Tested by:	scottl
2006-03-31 23:04:48 +00:00
Scott Long
7f631a410c Hook the MFI driver up to the build. 2006-03-29 09:57:22 +00:00
John Baldwin
8283c726e7 If the XSDT address in the RSDP for an ACPI 2.0 machine is NULL, then fall
back to using the RSDT instead.  ACPI-CA already follows this same strategy
as a workaround for yet another instance of brain-damaged BIOS writers.

PR:		i386/93963
Submitted by:	Masayuki FUKUI <fukui.FreeBSD@fanet.net>
2006-03-27 15:59:48 +00:00
Alan Cox
fa8053e9a9 Eliminate unnecessary invalidations of the entire TLB by pmap_remove().
Specifically, on mappings with PG_G set pmap_remove() not only performs
the necessary per-page invlpg invalidations but also performs an
unnecessary invalidation of the entire set of non-PG_G entries.

Reviewed by: tegge
2006-03-21 18:07:42 +00:00