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Commit Graph

10877 Commits

Author SHA1 Message Date
John Baldwin
3ce72960e8 Regen. 2006-07-21 20:41:33 +00:00
John Baldwin
b4c63329d5 - Pass the MPSAFE flag to namei() in linux_uselib() and handle conditional
Giant VFS locking in that function.
- Remove bogus code to handle the case where namei() returns success but a
  NULL vnode pointer.
- Note that this code duplicates exec_check_permissions() and annotate
  where it differs.
- Hold the vnode lock longer to protect the write to set VV_TEXT in
  v_vflag.
- Mark linux_uselib() MPSAFE.

Reviewed by:	rwatson
2006-07-21 20:22:13 +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
7c9cc27f26 MFamd64
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
2006-07-18 03:17:12 +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
Alan Cox
d259662b81 MFamd64
Make three simplifications to pmap_ts_referenced():
   Eliminate an initialized but otherwise unused variable.
   Eliminate an unnecessary test.
   Exit the loop in a shorter way.
2006-07-16 21:05:58 +00:00
Alan Cox
ddd6244a16 Eliminate the remaining uses of "register".
Convert the remaining K&R-style function declarations to ANSI-style.

Eliminate excessive white space from pmap_ts_referenced().
2006-07-16 19:43:49 +00:00
Alan Cox
d3dd65ab60 Make pc_freemask an array of uint32_t, rather than uint64_t. (I believe
that the use of the latter is simply an oversight in porting the new pv
entry code from amd64.)
2006-07-15 07:24:30 +00:00
John Baldwin
2e5ea45f19 Regen. 2006-07-14 15:42:47 +00:00
John Baldwin
5560239759 Somewhat surprisingly, ibcs2_ioctl() is MPSAFE as it is without needing any
further fixes.
2006-07-14 15:42:21 +00:00
John Baldwin
4028fd5b49 Regen. 2006-07-14 15:31:01 +00:00
John Baldwin
86759770f9 Mark ibcs2_mount() (just returns EINVAL) and ibcs2_umount() (just calls
unmount(2)) MPSAFE.
2006-07-14 15:30:50 +00:00
John Baldwin
e4edf2558e Regen. 2006-07-14 15:11:46 +00:00
John Baldwin
7186587b82 ibcs2_sigprocmask() is already marked MPSAFE in syscalls.xenix, so mark
it MPSAFE in syscalls.isc.
2006-07-14 15:11:20 +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
Michael Reifenberger
df2f5de4e5 Initialise (if necessary) the VIA C3/C7 features.
Store the capabilities for further use by random(4), padlock(4), ...

Obtained from:	mostly OpenBSD
MFC after:	1 week
2006-07-12 19:46:08 +00:00
Michael Reifenberger
9b6560e483 fix typo in identcpu.c and add one define to specialreg.h.
MFC after:	1 week
2006-07-12 16:52:56 +00:00
Michael Reifenberger
e5f87cebb3 First step to identify and initialize the newer VIA C7 CPU
as found in a VIA EPIA EN-15000 board.

Obtained from:	large parts from OpenBSD
2006-07-12 14:52:32 +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
John Baldwin
a46a6706c5 Retire the stackgap macros from ibcs2 as they are no longer used. Push
the includes of <sys/exec.h> and <sys/sysent.h> down into the only files
that now need them.
2006-07-10 17:59:26 +00:00
John Baldwin
33f016341e Regen. 2006-07-10 15:55:38 +00:00
John Baldwin
036fd5f3bc Mark ibcs2_msgsys(), ibcs2_semsys(), and ibcs2_shmsys() MPSAFE. 2006-07-10 15:55:17 +00:00
Thomas Wintergerst
5d0c7501b6 Extend i4b to support CAPI manager based ISDN controllers (CAPI manager is part of
c4b, CAPI for BSD). This is a preparation to add CAPI for BSD to the source tree.

Approved by:	hm (mentor)
MFC after:	2 weeks
2006-07-09 21:16:06 +00:00
Matt Jacob
626b06c711 Make the firmware assist driver resident in
preparation for isp using it.

Reviewed by:	sam, max
2006-07-09 16:41:22 +00:00
Matt Jacob
1b530437b6 If PAE is built w/o modules, make sure that isp(4)
has its firmware resident as well.
2006-07-09 16:38:58 +00:00
John Baldwin
16a9155a67 Regen. 2006-07-08 20:14:34 +00:00
John Baldwin
d9f4623307 - Split ioctl() up into ioctl() and kern_ioctl(). The kern_ioctl() assumes
that the 'data' pointer is already setup to point to a valid KVM buffer
  or contains the copied-in data from userland as appropriate (ioctl(2)
  still does this).  kern_ioctl() takes care of looking up a file pointer,
  implementing FIONCLEX and FIOCLEX, and calling fi_ioctl().
- Use kern_ioctl() to implement xenix_rdchk() instead of using the stackgap
  and mark xenix_rdchk() MPSAFE.
2006-07-08 20:12:14 +00:00
John Baldwin
43e757a78d Use kern_connect() in spx_open() to avoid the need for the stackgap. I
also used kern_close() for simplicity though close(2) wasn't requiring
the use of the stackgap.
2006-07-08 20:05:04 +00:00
John Baldwin
c68b315699 - Split the IBCS2 ipc foosys() system calls up into subfunctions matching
the organization in svr4_ipc.c.
- Use kern_msgctl(), kern_semctl(), and kern_shmctl() instead of the
  stackgap.
2006-07-08 19:54:12 +00:00
John Baldwin
839cea4b0a Use ibsc2_key_t rather than key_t. 2006-07-08 19:52:49 +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
John Baldwin
42fd98d94b Regen. 2006-07-06 21:33:14 +00:00
John Baldwin
3cb83e714d Add kern_setgroups() and kern_getgroups() and use them to implement
ibcs2_[gs]etgroups() rather than using the stackgap.  This also makes
ibcs2_[gs]etgroups() MPSAFE.  Also, it cleans up one bit of weirdness in
the old setgroups() where it allocated an entire credential just so it had
a place to copy the group list into.  Now setgroups just allocates a
NGROUPS_MAX array on the stack that it copies into and then passes to
kern_setgroups().
2006-07-06 21:32:20 +00:00
John Baldwin
c79c04f176 Use the regular poll(2) function to implement poll(2) for the IBCS2 compat
ABI as FreeBSD's poll(2) is ABI compatible.  The ibcs2_poll() function
attempted to implement poll(2) using a wrapper around select(2).  Besides
being somewhat ugly, it also had at least one bug in that instead of
allocating complete fdset's on the stack via the stackgap it just allocated
pointers to fdsets.
2006-07-06 21:29:05 +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
Rink Springer
44a8277bc6 Updated the XBOX kernel to use the new nfe(4) driver obtained from
OpenBSD. This driver seems to give a small performance increase, and
should lead to better maintainability in the future.

The nForce Ethernet-specific hack in sys/i386/xbox/xbox.c is still
required, judging from dev/nfe/if_nfe.c. The condition it hacks will
almost certainly only occur on XBOX-es anyway, so it is best left there.

Approved by:	imp (mentor)
2006-06-27 20:22:32 +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
031bf5ea1e Eliminate a comment that became stale after revision 1.547. 2006-06-25 22:15:02 +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
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
d037e6d6d0 Style fix, use low-case. 2006-06-19 07:55:29 +00:00
David Xu
85b2d575de Clear bit 22 in MSR IA32_MISC_ENABLE, according to Intel document,
when the bit 22 is set to 1, CPUID with EAX=0 returns a maximum
value in EAX[7..0] of 3, when set to 0(default), CPUID with EAX=0
returns the number corresponding to the maximum standard function
supported. On my machine, BIOS sets the bit to 1 to make it to be
compatible with old OS, this causes dual-core Pentium-D (two
physical cores) to be identified as hyperthreading (two logical
cores) by function mp_topology().
2006-06-19 07:51:47 +00:00
Yaroslav Tykhiy
8276a67ad0 Fix style while I'm here. 2006-06-18 12:13:49 +00:00
Yaroslav Tykhiy
042bbfae5a The i386 "call" instruction works as follows: it pushes
the return address on the stack and only then "dereferences" %pc.
Therefore, in the case of a call to an invalid address, we arrive
to the trap handler with the invalid value in tf_eip.  This used
to prevent db_backtrace() from assigning the most recent and interesting
frame on the stack to the right spot in the right function, from
which the invalid call was attempted.

Try to detect and work around that by recovering the return address
from the stack.

The work-around requires the fault address be passed to db_backtrace().
Smuggle it as tf_err.

MFC after:	1 month
Sponsored by:	RiNet (Cronyx Plus LLC)
2006-06-18 12:07:00 +00:00
Matt Jacob
375e362989 Unbreak tinderbox- fix device_printf arg to accomodate different sizes
of vm_paddr_t in different contexts (e.g., PAE vs. non PAE).
2006-06-16 14:04:21 +00:00
Yaroslav Tykhiy
a436dbf123 Return -1 from db_numargs() if number of args couldn't be guessed.
Use this later to indicate in backtrace output that args shown are
uncertain.

Sponsored by: RiNet (Cronyx Plus LLC)
2006-06-16 11:49:37 +00:00
Yaroslav Tykhiy
70b906ae82 Guess the number of arguments to a function somewhat better.
Now GCC likes to stick a "mov %eax, %FOO" instruction before
"addl $BAR, %esp" if the function just called returns an int,
which is a very common case in the kernel.

Sponsored by: RiNet (Cronyx Plus LLC)
2006-06-16 11:14:54 +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
Marius Strobl
acb8c14985 Make the ISAPNP code optional and only enable it on i386 and pc98 (used
for CBUS-PNP cards there) by default, as there are no amd64 and sparc64
machines with ISA slots and which therefore could make use of this code
known to exist. For sparc64 this additionally allows to get rid of the
compat shims for in{b,w,l}()/out{b,w,l}() etc and the associated hacks.

OK'ed by:	imp, peter
2006-06-12 21:07:13 +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
Nate Lawson
dd311cb41a * Ask for a page-aligned page instead of an arbitrary address. This should
not be necessary but might be helpful and at least reduce fragmentation.
* Add an assert to detect if the wakecode ever grows too big.  We include
  1 KB for stack, which should be more than enough also.
* Remove unnecessary initialization of static variables.
* Add comments and a bootverbose print giving the page phys address.
2006-06-10 08:20:17 +00:00
Nate Lawson
716d09af5e Minor tweaks to the resume code. Previous commit reverted alignment back
to 4.  There is no need to be more strict at assembly time since we copy
the code anyway to a private page.

* Clear the direction flag and eflags.  Probably not necessary but it won't
  hurt to be safe.
* Add prefixes to all instructions to prevent any assembler mistakes.
* Remove zeroing of eax - edi.  We use those registers immediately after
  to transfer values to protected mode so this was pointless.
* Update comments to reflect info found during code review.
2006-06-10 08:20:03 +00:00
Nate Lawson
b46f4324ff Move the reset beep tunable/sysctl to debug.acpi.resume_beep. This makes
more sense than under hw.acpi.  Also, document this in the man page.
2006-06-10 08:06:16 +00:00
Nate Lawson
64297e67ab Minor tweaks to the resume code that might help people debug.
* Add hw.acpi.resume_beep tunable and sysctl, default to 0.  Beeps the PC
speaker soon after waking to diagnose whether the wakeup code is even
getting run before other drivers possibly hang the system.  To stop the beep,
cause another beep (i.e. keyboard bell).  Submitted by takawata@, I changed
the frequency to be lower.

* Use 4096 instead of 4 byte alignment.  Might be useful although doesn't
seem to be necessary.

* Remove a useless assignment to acpi_reset_video.  It was overwritten by
the default sysctl value anyway.
2006-06-08 17:54:10 +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
Ed Maste
f4eaa4b967 Fix cut-n-pasteo: use the i386 version #define for i386 dumps, not the amd64 one. 2006-06-05 18:21:29 +00:00
Alan Cox
62b5e735a6 MFamd64
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().
2006-06-05 06:08:21 +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
David Xu
f1c313bff2 Clear invalid bits only if CPU supports SSE, otherwise, some fields in
struct save87 will be cleared unexpectly.
2006-05-31 00:17:29 +00:00
David Xu
afedf1a7f1 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.

Reviewed by: bde
2006-05-30 23:44:21 +00:00
David Xu
5d84379dd6 Backout changes trying to inherit floating-point environment, although
POSIX (susv3) requires this, but it is unclear what should be inherited,
duplicating whole 387 stack for new thread seems to be unnecessary and
dangerous. Revert to previous code, force a new thread to be started with
clean FP state.
2006-05-29 02:58:37 +00:00
Mike Silbersack
0d65566db8 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 18:30:36 +00:00
David Xu
4f56cbcbd5 Clear high 16 bits of mxcsr register, according to Intel document, if
the high 16 bits is non-zero, fxrstor instruction will generate GP fault,
resulting kernel crash, this bug can be triggered by setcontext and
ptrace(PT_SETXMMREGS).
2006-05-28 06:51:57 +00:00
David Xu
1db0da9e2b PCB_NPXINITDONE is cleared by npx_fork_thread. 2006-05-28 04:47:56 +00:00
David Xu
40310f021d If parent thread never used FPU, the only work is to clear flag
PCB_NPXINITDONE for new thread and let trap code initialize it.
2006-05-28 04:40:45 +00:00
David Xu
38fd748725 When creating a new thread, inherit floating-point environment from
current thread, this is required by POSIX pthread_create document.
2006-05-28 02:03:13 +00:00
Warner Losh
d708737568 APM was calling the suspend process from a timeout. This meant that
other timeouts could not happen while suspending, including timeouts
for things like msleep.  This caused the system to hang on suspend
when the cbb was enabled, since its suspend path powered down the
socket which used a timeout to wait for it to be done.

APM now creates a thread when it is enabled, and deletes the thread
when it is disabled.  This thread takes the place of the timeout by
doing its polling every ~.9s.  When the thread is disabled, it will
wakeup early, otherwise it times out and polls the varius things the
old timeout polled (APM events, suspend delays, etc).

This makes my Sony VAIO 505TS suspend/resume correctly when APM is
enabled (ACPI is black listed on my 505TS).

This will likely fix other problems with the suspend path where
drivers would sleep with msleep and/or do other timeouts.  Maybe
there's some special case code that would use DELAY while suspending
and msleep otherwise that can be revisited and removed.

This was also tested by glebius@, who pointed out that in the patch I
sent him, I'd forgotten apm_saver.c

MFC After: 3 weeks
2006-05-25 23:06:38 +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
136eda1dc3 - Add C-bus and ISA front-ends for le(4) so it can actually replace
lnc(4) on PC98 and i386. The ISA front-end supports the same non-PNP
  network cards as lnc(4) did and additionally a couple of PNP ones.
  Like lnc(4), the C-bus front-end of le(4) only supports C-NET(98)S
  and is untested due to lack of such hardware, but given that's it's
  based on the respective lnc(4) and not too different from the ISA
  front-end it should be highly likely to work.
- Remove the descriptions of le(4), which where converted from lnc(4),
  from sys/i386/conf/NOTES and sys/pc98/conf/NOTES as there's a common
  one in sys/conf/NOTES.
2006-05-17 21:25:23 +00:00
Marius Strobl
dcaf1a3834 - As only the PCI front-end of le(4) is common to all platforms move its
entry to the PCI NICs section so it's in the same spot in all GENERIC
  config files.
- Add a note to the description of pcn(4) informing that is has precedence
  over le(4).
2006-05-17 20:44:01 +00:00
Poul-Henning Kamp
f6ce2a64f7 Send the pcvt(4) driver off to retirement. 2006-05-17 09:33:15 +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
George V. Neville-Neil
3f0c418ad9 Prefer the le device driver for Lance (AMD7990 et al) hardware over the
older, and less capable lnc driver.

Reviewed by:	imp
2006-05-14 01:40:41 +00:00
Peter Wemm
374757c7cb Test commit after repoman upgrade. Remove one of my many email addresses
from a copyright message.
2006-05-12 22:41:58 +00:00
Peter Wemm
b02a3351e8 Test commit after repoman upgrade. Remove one of my many email addresses
from a coyright message.
2006-05-12 22:38:53 +00:00
Nate Lawson
c404dfeae1 Add support for the VIA C7-M processor family.
Remove an unnecessary check of the table's bus clock.  CPUs that
support this feature export only the high/low settings via the MSR,
packed into 32 bits.

Hardware from:	Centaur Technologies
MFC after:	1 week
2006-05-11 17:35:44 +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
Sam Leffler
145ebf44d2 make tinderbox happy: GENERIC got ath and wlan added so we need to
now mark these "nodevice" or we'll get undefined references
2006-05-10 05:19:21 +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
Maxim Konovalov
053a042047 o Add acpi_ibm to the build.
PR:		kern/96940
Submitted by:	Rong-En Fan
2006-05-07 20:13:18 +00:00
Doug Ambrisko
060e488247 Enhance the Linux emulation layer to make MegaRAID SAS managements tool happy.
Add back in a scheme to emulate old type major/minor numbers via hooks into
stat, linprocfs to return major/minors that Linux app's expect.  Currently
only /dev/null is always registered.  Drivers can register via the Linux
type shim similar to the ioctl shim but by using
linux_device_register_handler/linux_device_unregister_handler functions.
The structure is:

    struct linux_device_handler {
        char    *bsd_driver_name;
        char    *linux_driver_name;
        char    *bsd_device_name;
        char    *linux_device_name;
        int     linux_major;
        int     linux_minor;
        int     linux_char_device;
    };

Linprocfs uses this to display the major number of the driver.  The
soon to be available linsysfs will use it to fill in the driver name.
Linux_stat uses it to translate the major/minor into Linux type values.

Note major numbers are dynamically assigned via passing in a -1 for
the major number so we don't need to keep track of them.

This is somewhat needed due to us switching to our devfs.  MegaCli
will not run until I add in the linsysfs and mfi Linux compat changes.

Sponsored by:	IronPort Systems
2006-05-05 16:10:45 +00:00
Sam Leffler
8e84cc6b22 add ath and wlan crypto support
Requested by:	many
MFC after:	1 month
2006-05-03 18:13:11 +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
Peter Wemm
ada5d7d5b0 Using an idea from Stephan Uphoff, use the empty pte's that correspond
to the unused kva in the pv memory block to thread a freelist through.
This allows us to free pages that used to be used for pv entry chunks
since we can now track holes in the kva memory block.

Idea from:  ups
2006-05-01 21:22:38 +00:00
Peter Wemm
4c8eff70f8 Fix missing changes required for the amd64->i386 conversion. Add the
missing VM_ALLOC_WIRED flags to vm_page_alloc() calls I added.

Submitted by:  alc
2006-05-01 19:57:00 +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
Peter Wemm
7eeda22793 Interim fix for pmap problems I introduced with my last commit.
Remove the code to dyanmically change the pv_entry limits.  Go back
to a single fixed kva reservation for pv entries, like was done
before when using the uma zone.  Go back to never freeing pages
back to the free pool after they are no longer used, just like
before.

This stops the lock order reversal due to aquiring the kernel map
lock while pmap was locked.

This fixes the recursive panic if invariants are enabled.

The problem was that allocating/freeing kva causes vm_map_entry
nodes to be allocated/freed.  That can recurse back into pmap as
new pages are hooked up to kvm and hence all the problem.
Allocating/freeing kva indirectly allocate/frees memory.

So, by going back to a single fixed size kva block and an index,
we avoid the recursion panics and the LOR.

The problem is that now with a linear block of kva, we have no
mechanism to track holes once pages are freed.  UMA has the same
problem when using custom object for a zone and a fixed reservation
of kva.  Simple solutions like having a bitmap would work, but would
be very inefficient when there are hundreds of thousands of bits
in the map.  A first-free pointer is similarly flawed because pages
can be freed at random and the first-free pointer would be rewinding
huge amounts.  If we could allocate memory for tree strucures or
an external freelist, that would work.  Except we cannot allocate/free
memory here because we cannot allocate/free address space to use
it in.  Anyway, my change here reverts back to the UMA behavior of
not freeing pages for now, thereby avoiding holes in the map.

ups@ had a truely evil idea that I'll investigate.  It should allow
freeing unused pages again by giving us a no-cost way to track the
holes in the kva block.  But in the meantime,  this should get people
booting with witness and/or invariants again.

Footnote: amd64 doesn't have this problem because of the direct map
access method.  I'd done all my witness/invariants testing there.  I'd
never considered that the harmless-looking kmem_alloc/kmem_free calls
would cause such a problem and it didn't show up on the boot test.
2006-04-28 19:05:08 +00:00
Maxim Sobolev
ab39543373 Unbreak pc98. Sorry... 2006-04-28 03:38:23 +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
Scott Long
bd02c63f13 Add the rr232x driver to the default kernels. 2006-04-27 20:58:24 +00:00
Maxim Sobolev
897f1917a4 In the case when reset via keyboard controller doesn't work for some reason
(i.e. no keyboard controller present), try two other common methods for
resetting i386 machine - pci reset and port 0x92 fast reset. Only if neither
works warn user and resort to "unmap entire address space and hope for good"
hack. This makes my MacBook Pro rebooting just fine and should also help
other legacy-free hardware out there.

Also, disable interrupts unconditionally in cpu_reset_real(), since we don't
want any interference.

MFC after:	1 week
2006-04-27 05:18:26 +00:00
Xin LI
027ed650da Fix build on i386 2006-04-27 05:02:21 +00:00
Peter Wemm
041a991fa7 MFamd64: shrink pv entries from 24 bytes to about 12 bytes. (336 pv entries
per page = effectively 12.19 bytes per pv entry after overheads).
Instead of using a shared UMA zone for 24 byte pv entries (two 8-byte tailq
nodes, a 4 byte pointer, and a 4 byte address), we allocate a page at a
time per process.  This provides 336 pv entries per process (actually, per
pmap address space) and eliminates one of the 8-byte tailq entries since
we now can track per-process pv entries implicitly.  The pointer to
the pmap can be eliminated by doing address arithmetic to find the metadata
on the page headers to find a single pointer shared by all 336 entries.
There is an 11-int bitmap for the freelist of those 336 entries.

This is mostly a mechanical conversion from amd64, except:
* i386 has to allocate kvm and map the pages, amd64 has them outside of kvm
* native word size is smaller, so bitmaps etc become 32 bit instead of 64
* no dump_add_page() etc stuff because they are in kvm always.
* various pmap internals tweaks because pmap uses direct map on amd64 but
  on i386 it has to use sched_pin and temporary mappings.

Also, sysctl vm.pmap.pv_entry_max and vm.pmap.shpgperproc are now
dynamic sysctls.  Like on amd64, i386 can now tune the pv entry limits
without a recompile or reboot.

This is important because of the following scenario.   If you have a 1GB
file (262144 pages) mmap()ed into 50 processes, that requires 13 million
pv entries.  At 24 bytes per pv entry, that is 314MB of ram and kvm, while
at 12 bytes it is 157MB.  A 157MB saving is significant.

Test-run by:  scottl (Thanks!)
2006-04-26 21:49:20 +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
4503a06eef Merge minidumps from amd64 where they were originally developed.
Major differences:
 * since there is no direct map region, there is no custom uma memory
   allocator to modify to include its pages in the dumps.
 * Various data entries are reduced from 64 bit to 32 bit to match the
   native size.

dump_add_page() and dump_drop_page() are still present in case one wants to
arrange for arbitary pages to be dumped.  This is of marginal use though
because libkvm+kgdb cannot address physical memory that isn't mapped into
kvm.
2006-04-21 04:28:43 +00:00
Warner Losh
99b0e15695 Set the rid of the resource we're about to return to the user. 2006-04-20 04:10:27 +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
Mitsuru IWASAKI
858a52f464 Import ACPI Dock Station support. Note that this is still very young.
Additional detach implementaions (or maybe improvement) for other
deivce drivers is required.

Reviewed by:	njl, imp
MFC after:	1 week
2006-04-15 12:31:34 +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
0f2be07217 - Don't set CR0_NE and CR0_MP in npx_probe() as they are already set
earlier in cpu_setregs().
- If we know this CPU has a FPU via cpuid, then just assume the INT16
  interface and make the npx device quiet to not clutter the dmesg.  This
  is true for all Pentium and later CPUs and even some of the later 486dx
  CPUs.

Reviewed by:	bde
Tested by:	ps
MFC after:	1 week
2006-04-06 17:17:45 +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
Joseph Koshy
64e3ca8f48 Freshen a comment.
Reviewed by:	jhb
2006-04-04 02:26:45 +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
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
9216fccdd9 Add kbdmux(4) to GENERIC
Requested by:	scottl
2006-03-31 19:03:37 +00:00
Scott Long
7f631a410c Hook the MFI driver up to the build. 2006-03-29 09:57:22 +00:00
Dag-Erling Smørgrav
6f0f8cca25 Use wrapper macros for atomic pointer operations in order to perform the
correct casts.  This should probably be merged to other architectures.
2006-03-28 14:34:48 +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
David Xu
39d3e6198d Remove stale KSE code.
Reviewed by: alc
2006-03-21 06:46:27 +00:00
John Baldwin
aef8cd01ed Drop some unneeded casts since we program the kernel in C rather than C++. 2006-03-20 19:39:08 +00:00
Alexander Leidinger
c85625bfe7 regen 2006-03-18 20:49:01 +00:00
Alexander Leidinger
d4a3f5ddb6 Fixup some problems in my previous commit (COMPAT_43).
Pointyhat to:	netchild
2006-03-18 20:47:36 +00:00
Alexander Leidinger
1f7642e058 regen after COMPAT_43 removal 2006-03-18 18:24:38 +00:00
Alexander Leidinger
5c8919adf4 Get rid of the need of COMPAT_43 in the linuxolator.
Submitted by:	Divacky Roman <xdivac02@stud.fit.vutbr.cz>
Obtained from:	DragonFly (some parts)
2006-03-18 18:20:17 +00:00
John Baldwin
39092e79ed Don't allow userland to set hardware watch points on kernel memory at all.
Previously, we tried to allow this only for root.  However, we were calling
suser() on the *target* process rather than the current process.  This
means that if you can ptrace() a process running as root you can set a
hardware watch point in the kernel.  In practice I think you probably have
to be root in order to pass the p_candebug() checks in ptrace() to attach
to a process running as root anyway.  Rather than fix the suser(), I just
axed the entire idea, as I can't think of any good reason _at all_ for
userland to set hardware watch points for KVM.

MFC after:	3 days
Also thinks hardware watch points on KVM from userland are bad:	bde, rwatson
2006-03-14 16:13:55 +00:00
David Xu
90a693f891 It is not necessary to read %gs twice. 2006-03-10 05:55:26 +00:00
David Xu
fc643048fe Fix stack offset to allow gcc's stack aligment code to work correctly.
MFC after: 3 days
2006-03-10 02:54:45 +00:00
John Baldwin
8e8f0765ab Flip the switch and don't route interrupts to hyperthreads in a HT system.
In at least one benchmark this showed around a 20% performance increase.
If other workloads do benefit from having hyperthreads service interrupts,
we can always make this a loader tunable.

MFC after:	3 days
Tested by:	ps
2006-03-09 16:38:52 +00:00
Poul-Henning Kamp
6acae67129 Improve the advantech watchdog. 2006-03-06 07:43:28 +00:00
Yaroslav Tykhiy
375ce6798f Take the functionality contained in the former "options TDFX_LINUX"
into a separate module.  Accordingly, convert the option into a device
named similarly.

Note for MFC: Perhaps the option should stay in RELENG_6 for POLA reasons.

Suggested by:	scottl
Reviewed by:	cokane
MFC after:	5 days
2006-03-03 21:37:38 +00:00
Alexander Leidinger
fb0a379774 - use a more common style to print memory sizes
- add some more cache sizes (2nd and 3rd level) [1]

Submitted by:	HATANOU Tomomi <hatanou@infolab.ne.jp> [1]
PR:		91328 [1]
2006-03-03 18:54:05 +00:00
Rink Springer
5fa7c51ff6 Committed the xbox syscons(8)-able console driver.
Reviewed by:    arch@ (no comments)
Approved by:    imp (mentor)
2006-03-03 14:52:57 +00:00
Scott Long
a7f12baaca iir works on PAE now. 2006-03-03 04:30:18 +00:00
John Baldwin
215e7c161a Rework how we wire up interrupt sources to CPUs:
- Throw out all of the logical APIC ID stuff.  The Intel docs are somewhat
  ambiguous, but it seems that the "flat" cluster model we are currently
  using is only supported on Pentium and P6 family CPUs.  The other
  "hierarchy" cluster model that is supported on all Intel CPUs with
  local APICs is severely underdocumented.  For example, it's not clear
  if the OS needs to glean the topology of the APIC hierarchy from
  somewhere (neither ACPI nor MP Table include it) and setup the logical
  clusters based on the physical hierarchy or not.  Not only that, but on
  certain Intel chipsets, even though there were 4 CPUs in a logical
  cluster, all the interrupts were only sent to one CPU anyway.
- We now bind interrupts to individual CPUs using physical addressing via
  the local APIC IDs.  This code has also moved out of the ioapic PIC
  driver and into the common interrupt source code so that it can be
  shared with MSI interrupt sources since MSI is addressed to APICs the
  same way that I/O APIC pins are.
- Interrupt source classes grow a new method pic_assign_cpu() to bind an
  interrupt source to a specific local APIC ID.
- The SMP code now tells the interrupt code which CPUs are avaiable to
  handle interrupts in a simpler and more intuitive manner.  For one thing,
  it means we could now choose to not route interrupts to HT cores if we
  wanted to (this code is currently in place in fact, but under an #if 0
  for now).
- For now we simply do static round-robin of IRQs to CPUs when the first
  interrupt handler just as before, with the change that IRQs are now
  bound to individual CPUs rather than groups of up to 4 CPUs.
- Because the IRQ to CPU mapping has now been moved up a layer, it would
  be easier to manage this mapping from higher levels.  For example, we
  could allow drivers to specify a CPU affinity map for their interrupts,
  or we could allow a userland tool to bind IRQs to specific CPUs.

The MFC is tentative, but I want to see if this fixes problems some folks
had with UP APIC kernels on 6.0 on SMP machines (an SMP kernel would work
fine, but a UP APIC kernel (such as GENERIC in RELENG_6) would lose
interrupts).

MFC after:	1 week
2006-02-28 22:24:55 +00:00
Colin Percival
69084095dc Add frequency-voltage tables for Intel 778, 758, 773, 753, and 733J
processors.

Obtained from:	Intel Datasheet 302189-008
2006-02-25 04:55:38 +00:00
Sam Leffler
3f676959ae guard function decls with _KERNEL so user code can include this file
MFC after:	1 week
2006-02-22 21:38:33 +00:00
John Baldwin
06ad42b2f7 Close some races between procfs/ptrace and exit(2):
- Reorder the events in exit(2) slightly so that we trigger the S_EXIT
  stop event earlier.  After we have signalled that, we set P_WEXIT and
  then wait for any processes with a hold on the vmspace via PHOLD to
  release it.  PHOLD now KASSERT()'s that P_WEXIT is clear when it is
  invoked, and PRELE now does a wakeup if P_WEXIT is set and p_lock drops
  to zero.
- Change proc_rwmem() to require that the processing read from has its
  vmspace held via PHOLD by the caller and get rid of all the junk to
  screw around with the vmspace reference count as we no longer need it.
- In ptrace() and pseudofs(), treat a process with P_WEXIT set as if it
  doesn't exist.
- Only do one PHOLD in kern_ptrace() now, and do it earlier so it covers
  FIX_SSTEP() (since on alpha at least this can end up calling proc_rwmem()
  to clear an earlier single-step simualted via a breakpoint).  We only
  do one to avoid races.  Also, by making the EINVAL error for unknown
  requests be part of the default: case in the switch, the various
  switch cases can now just break out to return which removes a _lot_ of
  duplicated PRELE and proc unlocks, etc.  Also, it fixes at least one bug
  where a LWP ptrace command could return EINVAL with the proc lock still
  held.
- Changed the locking for ptrace_single_step(), ptrace_set_pc(), and
  ptrace_clear_single_step() to always be called with the proc lock
  held (it was a mixed bag previously).  Alpha and arm have to drop
  the lock while the mess around with breakpoints, but other archs
  avoid extra lock release/acquires in ptrace().  I did have to fix a
  couple of other consumers in kern_kse and a few other places to
  hold the proc lock and PHOLD.

Tested by:	ps (1 mostly, but some bits of 2-4 as well)
MFC after:	1 week
2006-02-22 18:57:50 +00:00
Tor Egge
6bd7e81d83 Rounding addr upwards to next 4M or 2M boundary in pmap_growkernel() could
cause addr to become 0, resulting in an early return without populating
the last PDE.

Reviewed by:	alc
2006-02-16 22:10:57 +00:00
David Malone
0cbae93607 It seems bit 5 of cpu_feature2 is the VMX (Virtual Machine Extensions)
bit. While I'm here, delete a comment that was cut and past from the
cpu_features code that doesn't belong here.
2006-02-15 14:48:59 +00:00
Poul-Henning Kamp
e8444a7e6f CPU time accounting speedup (step 2)
Keep accounting time (in per-cpu) cputicks and the statistics counts
in the thread and summarize into struct proc when at context switch.

Don't reach across CPUs in calcru().

Add code to calibrate the top speed of cpu_tickrate() for variable
cpu_tick hardware (like TSC on power managed machines).

Don't enforce monotonicity (at least for now) in calcru.  While the
calibrated cpu_tickrate ramps up it may not be true.

Use 27MHz counter on i386/Geode.

Use TSC on amd64 & i386 if present.

Use tick counter on sparc64
2006-02-11 09:33:07 +00:00
Rink Springer
424d9b482d Cleaned the memory initialization up, moved some defines from the framebuffer
to an include file.

Reviewed by:		imp
Approved by:		imp (mentor)
2006-02-10 18:48:22 +00:00
Yaroslav Tykhiy
84d8f1b027 Avoid calling CPUID function 0x02 if the CPU reports no support for
it.  The former code used to hang older Intel CPUs by trying to get
non-existent TLB info 2^32 times.

Reduce code duplication around the calls to CPUID 0x02 by using
do-while loops.

PR:		i386/92977
Tested by:	cy
2006-02-09 09:10:54 +00:00
Poul-Henning Kamp
eb2da9a51f Simplify system time accounting for profiling.
Rename struct thread's td_sticks to td_pticks, we will need the
other name for more appropriately named use shortly.  Reduce it
from uint64_t to u_int.

Clear td_pticks whenever we enter the kernel instead of recording
its value as reference for userret().  Use the absolute value of
td->pticks in userret() and eliminate third argument.
2006-02-08 08:09:17 +00:00
Poul-Henning Kamp
5b1a8eb397 Modify the way we account for CPU time spent (step 1)
Keep track of time spent by the cpu in various contexts in units of
"cputicks" and scale to real-world microsec^H^H^H^H^H^H^H^Hclock_t
only when somebody wants to inspect the numbers.

For now "cputicks" are still derived from the current timecounter
and therefore things should by definition remain sensible also on
SMP machines.  (The main reason for this first milestone commit is
to verify that hypothesis.)

On slower machines, the avoided multiplications to normalize timestams
at every context switch, comes out as a 5-7% better score on the
unixbench/context1 microbenchmark.  On more modern hardware no change
in performance is seen.
2006-02-07 21:22:02 +00:00
Robert Watson
ce41b52994 Regenerate. 2006-02-06 22:15:00 +00:00
Robert Watson
68b21daa64 Assign audit event identifiers to ibcs2 system calls.
Obtained from:	TrustedBSD Project
2006-02-06 22:14:50 +00:00
John Baldwin
8917b8d28c - Always call exec_free_args() in kern_execve() instead of doing it in all
the callers if the exec either succeeds or fails early.
- Move the code to call exit1() if the exec fails after the vmspace is
  gone to the bottom of kern_execve() to cut down on some code duplication.
2006-02-06 22:06:54 +00:00
John Baldwin
809f984b21 Add a kern_eaccess() function and use it to implement xenix_eaccess()
rather than kern_access().

Suggested by:	rwatson
2006-02-06 22:00:53 +00:00
Robert Watson
3f4b50a482 Regenerate. 2006-02-06 01:40:48 +00:00
Robert Watson
35d982a761 Assign audit event identifiers to Linux i386 system calls.
Obtained from:	TrustedBSD Project
2006-02-06 01:40:30 +00:00
Robert Watson
570d840b52 Regenerate. 2006-02-05 23:28:46 +00:00
Robert Watson
b11c14d6e9 Assign audit event identfiers to Xenix system calls. Note: AUE_EACCESS
is assigned to xenix_eaccess() instead of AUE_ACCESS, as that is the
intended meaning of the system call.  xenix_eaccess() should be
reimplemented using our native eaccess() implementation so that it
works as intended.

Obtained from:	TrustedBSD Project
2006-02-05 23:28:01 +00:00
Robert Watson
ad3a6a7d36 Correct help line: list targets, not names of files generated by targets
when no argument is provided to make.

MFC after:	1 week
2006-02-05 23:25:19 +00:00
Robert Watson
4334cc4f81 Regenerate (accidentally also committed in commit that updated
syscalls.isc).
2006-02-05 23:16:20 +00:00
Robert Watson
60be92dd8d Assign audit event identifiers to ibcs2 ISC system calls.
Obtained from:	TrustedBSD Project
2006-02-05 23:15:22 +00:00
Ken Smith
4d286e9426 Move asr driver from global NOTES to i386-specific NOTES. Requestor
reports it is neither endian-clean or 64-bit clean.  :-)

Requested by:	scottl
2006-02-05 05:06:04 +00:00
Wayne Salamon
c62ccf20b2 Hook up the audit system to system call entry and exit. System calls will
now be audited.

Obtained from:	TrustedBSD Project
Approved by: rwatson (mentor)
2006-02-04 14:11:33 +00:00
Rink Springer
aaadec7cac Patch to allow XBox-users to use the onboard nve(4) nForce ethernet driver.
The patch crudely forces the NIC out of operating mode before the nve(4)
driver can initialize it; this is required to properly initialize the NIC.

It is XBox-specific, as this condition can only occur on XBoxes (Most loaders
will simply leave the NIC running, forcing us to use a crude workaround like
this to get it in a workable condition). Due to the XBox-only aspect, this has
been solved in XBox-specific initialization code and not within nve(4).

Reviewed by:	imp
Approved by:	imp (mentor)
No objection:	bz@, obrien@, q@ontheweb.com.au
2006-02-04 10:01:33 +00:00
David Xu
97794f4eb3 Clear carry flag in get_mcontext so that setcontext does not
return a bogus error.

PR: misc/92110
2006-02-03 02:33:01 +00:00
David Xu
165ba65d7b Under verbose mode, correctly report L2 cache information
for CPU which supports CPUID function 8000_0006h.

Tested on: Pentum-M 750
2006-02-02 12:44:09 +00:00
David Xu
ec4275eefa Fix bug in L2 cache size detection code for CPU which supports CPUID
function 8000_0006h.

Tested on: Pentum-M 750
2006-02-02 11:54:40 +00:00
David Xu
7aa9d01bf4 Correctly report L2 cache size according to its code comment.
Tested on my Dual PIII machine.
2006-02-02 06:35:50 +00:00
Roman Kurakin
f2ca64ca71 Attach ce(4) to the build.
MFC after:	3 days
2006-01-31 23:11:35 +00:00
Roman Kurakin
8edb110aa3 Prepare for sconfig(8) update.
Change also my e-mail.
2006-01-30 13:34:57 +00:00
John Baldwin
6966c33482 Call WITNESS_CHECK() in the page fault handler and immediately assume it
is a fatal fault if we are holding any non-sleepable locks.  This should
cut down on the number of bogus LORs we currently get when the kernel
panics due to a NULL (or bogus) pointer dereference that goes wandering
off into the VM system which tries to acquire locks and then kicks off
the spurious LORs.  This should probably be ported to all the archs at
some point.

Tested on:	i386
2006-01-27 22:22:10 +00:00
Stephan Uphoff
3753c2c3f1 Fix race conditions.
Tested by:	kris@
MFC after:      3 days
2006-01-23 15:46:09 +00:00
Marius Strobl
a5f92d5a54 Remove the commented out entry of the old ISA-only le(4) driver which
was retired 22 months ago.

MFC after:	1 day
2006-01-21 12:38:35 +00:00
David Xu
74bcd9d280 Eliminate a stale instruction introduced in revision 1.136. 2006-01-18 06:42:42 +00:00
Scott Long
0af57729a6 Free the newtag if we exit with a failure from alloc_bounce_zone().
Found by: Coverity Prevent(tm)
2006-01-14 17:22:47 +00:00
Poul-Henning Kamp
d3e64681d6 Move the old BSD4.3 tty compatibility from (!BURN_BRIDGES && COMPAT_43)
to COMPAT_43TTY.

Add COMPAT_43TTY to NOTES and */conf/GENERIC

Compile tty_compat.c only under the new option.

Spit out
	#warning "Old BSD tty API used, please upgrade."
if ioctl_compat.h gets #included from userland.
2006-01-10 09:19:10 +00:00
Warner Losh
d5e61c97a6 By popular demand, move __HAVE_ACPI and __PCI_REROUTE_INTERRUPT into
param.h.  Per request, I've placed these just after the
_NO_NAMESPACE_POLLUTION ifndef.  I've not renamed anything yet, but
may since we don't need the __.

Submitted by: bde, jhb, scottl, many others.
2006-01-09 06:05:57 +00:00
John Baldwin
04dda605c5 - Make pcib_devclass private to sys/dev/pci/pci_pci.c and change all the
various pcib drivers to use their own private devclass_t variables for
  their modules.
- Use the DEFINE_CLASS_0() macro to declare drivers for the various pcib
  drivers while I'm here.
2006-01-06 19:22:19 +00:00
John Baldwin
360c3c2d1a Fix various places that were testing td_critnest to see if interrupts
should remain disabled during a trap or not to check
td_md.md_spinlock_count instead.
2006-01-06 18:02:12 +00:00
Alexander Leidinger
e21a562e99 We don't support I386_CPU in 6.0 and later. This file can be cleaned
up some to assume that '#if defined(I486_CPU) || defined(I586_CPU) ||
defined(I686_CPU)' is true.

Suggested by:	jhb
Reviewed by:	jhb
2006-01-04 20:11:04 +00:00