Commit Graph

4148 Commits

Author SHA1 Message Date
David E. O'Brien
7a071c6a49 Complete 'IA32' -> 'COMPAT_IA32' change for the Linuxulator32. 2004-08-16 12:51:33 +00:00
Tim J. Robbins
7a47419763 Un-comment LINPROCFS. 2004-08-16 12:39:27 +00:00
David E. O'Brien
ce55a234ee I missed an 'IA32' in the documentation. 2004-08-16 11:15:46 +00:00
David E. O'Brien
c680f6b12d I'm not sure what tjr envisioned for turning on FreeBSD/i386 rt support,
but make it COMPAT_IA32 for now.
Fix the 'DEBUG' argument code to unbreak the amd64 LINT build.
2004-08-16 11:09:59 +00:00
David E. O'Brien
186b870df3 Fix the 'DEBUG' argument code to unbreak the amd64 LINT build. 2004-08-16 10:54:25 +00:00
Tim J. Robbins
6766a2386d Regen. 2004-08-16 08:07:06 +00:00
Tim J. Robbins
ea0fabbc4f Add preliminary support for running 32-bit Linux binaries on amd64, enabled
with the COMPAT_LINUX32 option. This is largely based on the i386 MD Linux
emulations bits, but also builds on the 32-bit FreeBSD and generic IA-32
binary emulation work.

Some of this is still a little rough around the edges, and will need to be
revisited before 32-bit and 64-bit Linux emulation support can coexist in
the same kernel.
2004-08-16 07:55:06 +00:00
Robert Watson
273ad9acbc Preemptive anti-footshooting: cause a #error if MP_WATCHDOG is compiled
with SCHED_ULE.
2004-08-15 20:32:40 +00:00
Robert Watson
a632deec30 Add an "options MP_WATCHDOG" to i386. This option allows one of the
logical CPUs on a system to be used as a dedicated watchdog to cause a
drop to the debugger and/or generate an NMI to the boot processor if
the kernel ceases to respond.  A sysctl enables the watchdog running
out of the processor's idle thread; a callout is launched to reset a
timer in the watchdog.  If the callout fails to reset the timer for ten
seconds, the watchdog will fire.  The sysctl allows you to select which
CPU will run the watchdog.

A sample "debug.leak_schedlock" is included, which causes a sysctl to
spin holding sched_lock in order to trigger the watchdog.  On my Xeons,
the watchdog is able to detect this failure mode and break into the
debugger, which cannot otherwise be done without an NMI button.

This option does not currently work with sched_ule due to ule's push
notion of scheduling, similar to machdep.hlt_logical_cpus failing to
work with that scheduler.

On face value, this might seem somewhat inefficient, but there are a
lot of dual-processor Xeons with HTT around, so using one as a watchdog
for testing is not as inefficient as one might fear.
2004-08-15 18:02:09 +00:00
Doug Ambrisko
4f1132a88a Fix the memory scaling bug when basemem was converted to Kbytes from
bytes for AMD64.  Otherwise the AP will be started at 640K which
won't work.  Bug found on a Xeon 64bit system.
2004-08-13 22:30:55 +00:00
David Xu
91574a97b7 Mark end of frames. 2004-08-11 23:23:05 +00:00
Marcel Moolenaar
4da47b2fec Add __elfN(dump_thread). This function is called from __elfN(coredump)
to allow dumping per-thread machine specific notes. On ia64 we use this
function to flush the dirty registers onto the backingstore before we
write out the PRSTATUS notes.

Tested on: alpha, amd64, i386, ia64 & sparc64
Not tested on: arm, powerpc
2004-08-11 02:35:06 +00:00
David Xu
767d9fcf7c As AMD64 architecture volume 1 chapter 3.1.2 says, high 32 bits of %rflags
are resevered, they can be written with anything, but they always read
as zero, we should simulate it in set_regs() as we are reading/writting
real hardware %rflags register.
2004-08-10 12:15:27 +00:00
David Xu
d421c2dc36 In syscall, always make a copy of parameters from trapframe, this
becauses some syscalls using set_mcontext can sneakily change
parameters and later when those syscalls references parameters,
they will wrongly use register values in mcontext_t.

Approved by: peter
2004-08-09 23:57:59 +00:00
Alan Cox
a9cb79ba4e With the advent of pmap locking it makes sense for pmap_copy() to be less
forgiving about inconsistencies in the source pmap.  Also, remove a new-
line character terminating a nearby panic string.
2004-08-08 00:31:58 +00:00
Scott Long
066853b70e Move the definition of M_MEMDESC to a non-optional file. This allows
kernels configurations without the 'mem' device to compile.
2004-08-07 06:21:37 +00:00
Alan Cox
606ae16f13 Eliminate a variable that became unused in the i386 to amd64 conversion. 2004-08-07 04:31:26 +00:00
Mark Murray
1e10d9c135 MFi386: Fix mem device. Grrr. 2004-08-06 07:22:36 +00:00
Mark Murray
b1b7862b7b MFi386: sort out the mem device. Grrrr. 2004-08-06 07:20:32 +00:00
Mark Murray
a20ad05beb Fix module builds for i386 and amd64. 2004-08-04 18:30:31 +00:00
Alan Cox
1b3b9cfe1d Post-locking clean up/simplification, particularly, the elimination of
vm_page_sleep_if_busy() and the page table page's busy flag as a
synchronization mechanism on page table pages.

Also, relocate the inline pmap_unwire_pte_hold() so that it can be used
to shorten _pmap_unwire_pte_hold() on alpha and amd64.  This places
pmap_unwire_pte_hold() next to a comment that more accurately describes
it than _pmap_unwire_pte_hold().
2004-08-04 18:04:44 +00:00
Mark Murray
d23a262fc5 Making a loadable null.ko for /dev/(null|zero) proved rather
unpopular, so remove this (mis)feature.

Encouragement provided by:	jhb (and others)
2004-08-03 19:24:54 +00:00
Maxime Henrion
9f1b87f106 Instead of calling ia32_pause() conditionally on __i386__ or __amd64__
being defined, define and use a new MD macro, cpu_spinwait().  It only
expands to something on i386 and amd64, so the compiled code should be
identical.

Name of the macro found by:	jhb
Reviewed by:	jhb
2004-08-03 18:44:27 +00:00
Doug Rabson
595a88c6af Add style(9) foolishness. 2004-08-03 08:21:48 +00:00
Mark Murray
ae17d056a1 Diff reduction WRT i386 version. 2004-08-02 20:36:47 +00:00
Doug Rabson
4d84a58d1d Add definitions for TLS relocations. 2004-08-02 19:12:17 +00:00
David E. O'Brien
b4adaf5679 Fix the build by providing 'PHYS_TO_DMAP' and 'M_MEMDESC'. 2004-08-02 02:07:20 +00:00
Mark Murray
b6527a3667 Add the I/O device for those architectures that have it. 2004-08-01 19:37:34 +00:00
Scott Long
9352fe30a0 Turn off PREEMPTION by default while it gets debugged. It's been causing
4 weeks of problems including deadlocks and instant panics.  Note that the
real bugs are likely in the scheduler.
2004-08-01 14:31:45 +00:00
Mark Murray
8ab2f5ecc5 Break out the MI part of the /dev/[k]mem and /dev/io drivers into
their own directory and module, leaving the MD parts in the MD
area (the MD parts _are_ part of the modules). /dev/mem and /dev/io
are now loadable modules, thus taking us one step further towards
a kernel created entirely out of modules. Of course, there is nothing
preventing the kernel from having these statically compiled.
2004-08-01 11:40:54 +00:00
David Xu
e3086a21e8 Turn on PCB_FULLCTX for set_mcontext, functions like kse_switchin
needs to fully restore asynchronous context which did not come
from fast syscall.
2004-07-31 14:02:29 +00:00
Alan Cox
c6bf9f0455 Add pmap locking to pmap_object_init_pt(). 2004-07-31 06:42:05 +00:00
Paul Saab
bc35f5dc9e MFia64:
Fix -O builds with gcc 3.4 by defining ffs as __builtin_ffs instead
of creating an inline function that just calls __builtin_ffs.
2004-07-30 16:44:29 +00:00
Alan Cox
a087914310 Advance the state of pmap locking on alpha, amd64, and i386.
- Enable recursion on the page queues lock.  This allows calls to
   vm_page_alloc(VM_ALLOC_NORMAL) and UMA's obj_alloc() with the page
   queues lock held.  Such calls are made to allocate page table pages
   and pv entries.
 - The previous change enables a partial reversion of vm/vm_page.c
   revision 1.216, i.e., the call to vm_page_alloc() by vm_page_cowfault()
   now specifies VM_ALLOC_NORMAL rather than VM_ALLOC_INTERRUPT.
 - Add partial locking to pmap_copy().  (As a side-effect, pmap_copy()
   should now be faster on i386 SMP because it no longer generates IPIs
   for TLB shootdown on the other processors.)
 - Complete the locking of pmap_enter() and pmap_enter_quick().  (As of now,
   all changes to a user-level pmap on alpha, amd64, and i386 are performed
   with appropriate locking.)
2004-07-29 18:56:31 +00:00
Alexander Kabaev
8b5ae4db0d Use newly added __used attribute to keep static function symbol from
being eliminated.
2004-07-29 18:02:28 +00:00
Poul-Henning Kamp
0658bb8ef8 Move a relic to its correct location(s): Put nfs diskless initialization
calls with the code they call.  (Yet another example of mindless copy&paste).
2004-07-28 21:54:57 +00:00
Robert Watson
1a8cfbc450 Pass a thread argument into cpu_critical_{enter,exit}() rather than
dereference curthread.  It is called only from critical_{enter,exit}(),
which already dereferences curthread.  This doesn't seem to affect SMP
performance in my benchmarks, but improves MySQL transaction throughput
by about 1% on UP on my Xeon.

Head nodding:	jhb, bmilekic
2004-07-27 16:41:01 +00:00
Warner Losh
2eed2482ba Remove ahb, aha, ie, le and wl devices. They are all ISA/EISA only.
I went ahead and left in the ISA cards that also have pccard
attachments.  There's no way that these devices could attach.

OK'd by: peter
2004-07-22 22:29:45 +00:00
Warner Losh
6d1275e568 There is no pcic device on amd64. OLDCARD isn't supported, and
NEWCARD will call it something different.  and there are no ISA add-in
devices.
2004-07-22 22:28:34 +00:00
Marcel Moolenaar
fd32d93b97 Unify db_stack_trace_cmd(). All it did was look up the thread given
the thread ID and call db_trace_thread().
Since arm has all the logic in db_stack_trace_cmd(), rename the
new DB_COMMAND function to db_stack_trace to avoid conflicts on
arm.
While here, have db_stack_trace parse its own arguments so that
we can use a more natural radix for IDs. If the ID is not a thread
ID, or more precisely when no thread exists with the ID, try if
there's a process with that ID and return the first thread in it.
This makes it easier to print stack traces from the ps output.

requested by: rwatson@
tested on: amd64, i386, ia64
2004-07-21 05:07:09 +00:00
Alan Cox
fa543780cc Remove the allpmaps list. It's unused.
Reviewed by: peter@
2004-07-20 02:40:56 +00:00
John Baldwin
788195c186 As a temporary hack, turn off deferred preemptions that are the result of
a fast interrupt handler doing an swi_sched().  This fixed the lockups I
saw on my laptop when using xmms in KDE and on rwatson's MySQL benchmarks
on SMP.  This will eventually be removed and/or modified when I figure out
what the root cause is and fix that.
2004-07-19 16:37:47 +00:00
David Schultz
479f8d2214 Make FLT_ROUNDS correctly reflect the dynamic rounding mode. 2004-07-19 08:17:25 +00:00
Scott Long
701f140800 Enable ADAPTIVE_MUTEXES by default by changing the sense of the option to
NO_ADAPTIVE_MUTEXES.  This option has been enabled by default on amd64 for
quite some time, and has been extensively tested on i386 and sparc64.  It
shows measurable performance gains in many circumstances, and few negative
effects.  It would be nice in t he future if adaptive mutexes actually went
to sleep after a certain amount of spinning, but that will require quite a
bit more testing.
2004-07-18 15:59:03 +00:00
Maxim Konovalov
aa355a2679 In -CURRENT pseudo devices are not statically assigned at compile time,
remove a stale comment.

PR:		kern/62285
2004-07-18 09:03:12 +00:00
Paul Saab
a146798856 Fix the build. pcm is no more. 2004-07-16 21:48:30 +00:00
Alan Cox
3d2e54c317 Push down the acquisition and release of the page queues lock into
pmap_protect() and pmap_remove().  In general, they require the lock in
order to modify a page's pv list or flags.  In some cases, however,
pmap_protect() can avoid acquiring the lock.
2004-07-15 18:00:43 +00:00
Peter Wemm
6897c4aef7 Like on i386, eliminate pv_ptem (which was suggested by alc). This
reduces the size of the pv_entry structure a small but significant amount.

This is implemented a little differently because it isn't so cheap to get
the physical address of the page tabke page on amd64.. instead of it
being directly accessible from the top level page directory, it is now
two additional tree levels down.  However.. In almost all cases, we
recently had the physical address if the page table page a short while
before we needed it, but it slipped through our fingers.  This patch
saves it for when we do need it.  Also, for the one case where we do not
have the ptp paddr, we are always running in curproc context and so we
can do a vtopte-like trick.  I've implemented vtopde() for this purpose.

There is still a CYA entry in pmap_unuse_pt() that needs to be removed.  I
think it can be removed now but I forgot to test with it gone.
2004-07-14 07:13:35 +00:00
David Xu
53dbf30349 Add ptrace_clear_single_step(), alpha already has it for years, the function
will be used by ptrace to clear a thread's single step state.
2004-07-13 07:22:56 +00:00
Alan Cox
ce8da3091f Push down the acquisition and release of the page queues lock into
pmap_remove_pages().  (The implementation of pmap_remove_pages() is
optional.  If pmap_remove_pages() is unimplemented, the acquisition and
release of the page queues lock is unnecessary.)

Remove spl calls from the alpha, arm, and ia64 pmap_remove_pages().
2004-07-13 02:49:22 +00:00