Commit Graph

10743 Commits

Author SHA1 Message Date
njl
1d3b84d7cb 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
phk
5d8c57a08b 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
netchild
021fd75458 regen (linux rt_sigpending) 2006-05-10 18:19:51 +00:00
netchild
24c492f42c 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
0b63676c43 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
ambrisko
f7d4a6b03b 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
d447c4f045 o Add acpi_ibm to the build.
PR:		kern/96940
Submitted by:	Rong-En Fan
2006-05-07 20:13:18 +00:00
ambrisko
31b22ce017 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
15945a996f add ath and wlan crypto support
Requested by:	many
MFC after:	1 month
2006-05-03 18:13:11 +00:00
scottl
7ef1f80fdd 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
jhb
00bb13261b 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
jhb
ca8d347695 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
4db7dec298 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
b5fd7cea55 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
193a6144b9 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
725e9bf143 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
sobomax
1e82b0de25 Unbreak pc98. Sorry... 2006-04-28 03:38:23 +00:00
alc
da3edd51a2 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
scottl
8bb256220b Add the rr232x driver to the default kernels. 2006-04-27 20:58:24 +00:00
sobomax
b5181c79ef 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
delphij
fc73c02211 Fix build on i386 2006-04-27 05:02:21 +00:00
peter
8165896908 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
jkim
18e73c2320 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
jkim
eefd58df92 Add another Intel CPU feature flag, xTPR (Send Task Priority Messages). 2006-04-24 22:56:57 +00:00
jkim
6b218fc19f Check if deterministic cache parameters leaf is valid before use. 2006-04-24 22:23:52 +00:00
cperciva
900c118819 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
delphij
da32f1fb9a Move AHC_REG_PRETTY_PRINT and AHD_REG_PRETTY_PRINT below
their corresponding devices.
2006-04-24 08:44:34 +00:00
peter
3fd2125c99 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
imp
2a2593f381 Set the rid of the resource we're about to return to the user. 2006-04-20 04:10:27 +00:00
cperciva
51d1ca0f6e Correct a local information leakage bug affecting AMD FPUs.
Security:	FreeBSD-SA-06:14.fpu
2006-04-19 07:00:19 +00:00
iwasaki
0613b693d0 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
alc
a7e3d6f83b 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
ps
cc2c59e66f Hook bce up to the build 2006-04-10 20:04:22 +00:00
jhb
dca0aae557 - 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
jhb
1dfdfa5677 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
jkoshy
33b6f0c5ea Freshen a comment.
Reviewed by:	jhb
2006-04-04 02:26:45 +00:00
marcel
8278e2d5fb 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
0f363b7d24 Remove the unused sva and eva arguments from pmap_remove_pages(). 2006-04-03 21:16:10 +00:00
alc
af01e3f809 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
emax
bce2a6b523 Add kbdmux(4) to GENERIC
Requested by:	scottl
2006-03-31 19:03:37 +00:00
scottl
725c458dc3 Hook the MFI driver up to the build. 2006-03-29 09:57:22 +00:00
des
af5e05fb0b 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
jhb
3718b3713e 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
alc
108c9331c3 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
davidxu
9f834e1bd5 Remove stale KSE code.
Reviewed by: alc
2006-03-21 06:46:27 +00:00
jhb
e11865e4b1 Drop some unneeded casts since we program the kernel in C rather than C++. 2006-03-20 19:39:08 +00:00
netchild
39276e2b1e regen 2006-03-18 20:49:01 +00:00
netchild
d1db96cb48 Fixup some problems in my previous commit (COMPAT_43).
Pointyhat to:	netchild
2006-03-18 20:47:36 +00:00
netchild
8fd6664412 regen after COMPAT_43 removal 2006-03-18 18:24:38 +00:00
netchild
c1829f604c 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
jhb
aaa33da2ed 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
davidxu
651e183fe9 It is not necessary to read %gs twice. 2006-03-10 05:55:26 +00:00
davidxu
b36ad9d674 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
jhb
329536bd48 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
phk
67fc39f642 Improve the advantech watchdog. 2006-03-06 07:43:28 +00:00
yar
0ac62e02bd 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
netchild
3d39f08ccd - 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
c057d8091b 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
scottl
d849f4e1ca iir works on PAE now. 2006-03-03 04:30:18 +00:00
jhb
3478c467ee 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
cperciva
8a3d42569d 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
116633743d guard function decls with _KERNEL so user code can include this file
MFC after:	1 week
2006-02-22 21:38:33 +00:00
jhb
ff9c76bccd 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
tegge
a9e07140a7 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
dwmalone
fab7fda621 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
phk
79081baaf0 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
34f7cafe2a 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
yar
89626cec4b 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
phk
74f8e63a10 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
phk
bb2f62f536 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
rwatson
69e67d72fa Regenerate. 2006-02-06 22:15:00 +00:00
rwatson
a3306012b7 Assign audit event identifiers to ibcs2 system calls.
Obtained from:	TrustedBSD Project
2006-02-06 22:14:50 +00:00
jhb
ae432f93f2 - 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
jhb
1f0c541bd1 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
rwatson
3a79f09166 Regenerate. 2006-02-06 01:40:48 +00:00
rwatson
59732048da Assign audit event identifiers to Linux i386 system calls.
Obtained from:	TrustedBSD Project
2006-02-06 01:40:30 +00:00
rwatson
e04cb6becd Regenerate. 2006-02-05 23:28:46 +00:00
rwatson
a31938806b 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
rwatson
7b3f1796f8 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
rwatson
5570c55a29 Regenerate (accidentally also committed in commit that updated
syscalls.isc).
2006-02-05 23:16:20 +00:00
rwatson
ee99b2f3a5 Assign audit event identifiers to ibcs2 ISC system calls.
Obtained from:	TrustedBSD Project
2006-02-05 23:15:22 +00:00
kensmith
92ff892e7e 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
wsalamon
8ef4ce651a 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
fc05a84231 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
davidxu
5e2e272cd9 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
davidxu
c013564a3c 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
davidxu
6ccd8f649b 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
davidxu
c19e41cb59 Correctly report L2 cache size according to its code comment.
Tested on my Dual PIII machine.
2006-02-02 06:35:50 +00:00
rik
34e5ca5b02 Attach ce(4) to the build.
MFC after:	3 days
2006-01-31 23:11:35 +00:00
rik
655acdb819 Prepare for sconfig(8) update.
Change also my e-mail.
2006-01-30 13:34:57 +00:00
jhb
2abda0c117 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
ups
e67b09cd21 Fix race conditions.
Tested by:	kris@
MFC after:      3 days
2006-01-23 15:46:09 +00:00
marius
2d1ab68b16 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
davidxu
f99d64bc80 Eliminate a stale instruction introduced in revision 1.136. 2006-01-18 06:42:42 +00:00
scottl
ec415604ac 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
phk
57be8af642 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
imp
c2b2965b6a 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
jhb
170b22254d - 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
jhb
42cfa2cc9e 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
netchild
24387e86c9 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
netchild
e426666183 - Make sure the cpu_exthigh variable is initialized (page coloring case). [1]
- Remove a conditional in the AMD cache detection, it's always false. [2]
- Don't try to detect a cache if only compiled for i386.

Analyzed by:	Antoine Brodin <antoine.brodin@laposte.net> [1]
Submitted by:	Antoine Brodin <antoine.brodin@laposte.net> [2]
2006-01-04 12:57:02 +00:00
phk
44d6de75f9 Use ttyalloc() instead of ttymalloc() 2006-01-04 09:46:20 +00:00
jhb
9a6ec66269 Fix a couple of issues with the ibcs2 module event handler. First, return
success instead of EOPNOTSUPP when being loaded.  Secondly, if there are no
ibcs2 processes running when a MOD_UNLOAD request is made, break out to
return success instead of falling through into the default case which
returns EOPNOTSUPP.  With these fixes, I can now kldload and subsequently
kldunload the ibcs2 module.

PR:		kern/82026 (and several duplicates)
Reported by:	lots of folks
MFC after:	1 week
2006-01-03 20:39:38 +00:00
jkim
ae104d9814 - Explicitly validate an empty filter to match bpf_filter() comment[1].
- Do not use BPF JIT compiler for an empty filter.

[1] Pointed out by:	darrenr
2006-01-03 20:26:03 +00:00
imp
8d9b67a0e3 Define __HAVE_ACPI and/or __PCI_REROUTE_INTERRUPT, as appropriate for
each platform.  These will be used in the pci code in preference to
the complicated #ifdefs we have there now.
2006-01-01 20:59:28 +00:00
netchild
507a9b3e93 MI changes:
- provide an interface (macros) to the page coloring part of the VM system,
   this allows to try different coloring algorithms without the need to
   touch every file [1]
 - make the page queue tuning values readable: sysctl vm.stats.pagequeue
 - autotuning of the page coloring values based upon the cache size instead
   of options in the kernel config (disabling of the page coloring as a
   kernel option is still possible)

MD changes:
 - detection of the cache size: only IA32 and AMD64 (untested) contains
   cache size detection code, every other arch just comes with a dummy
   function (this results in the use of default values like it was the
   case without the autotuning of the page coloring)
 - print some more info on Intel CPU's (like we do on AMD and Transmeta
   CPU's)

Note to AMD owners (IA32 and AMD64): please run "sysctl vm.stats.pagequeue"
and report if the cache* values are zero (= bug in the cache detection code)
or not.

Based upon work by:	Chad David <davidc@acns.ab.ca> [1]
Reviewed by:		alc, arch (in 2004)
Discussed with:		alc, Chad David, arch (in 2004)
2005-12-31 14:39:20 +00:00
davidxu
86c8c90d82 Remove pcb_switchout, it has not been used for a long time. 2005-12-29 13:23:48 +00:00
sobomax
34fa5a81a5 Remove kern.elf32.can_exec_dyn sysctl. Instead extend Brandinfo structure
with flags bitfield and set BI_CAN_EXEC_DYN flag for all brands that usually
allow executing elf dynamic binaries (aka shared libraries). When it is
requested to execute ET_DYN elf image check if this flag is on after we
know the elf brand allowing execution if so.

PR:		kern/87615
Submitted by:	Marcin Koziej <creep@desk.pl>
2005-12-26 21:23:57 +00:00
davidxu
b1b4f02f94 Move global variable private_tss into per-cpu area.
Reviewed by: jhb
2005-12-26 00:07:19 +00:00
jeff
f1d333e1f5 - Improve the INKERNEL macro such that it can no longer give false positives.
This fixes the stack(9) functionality.

Submitted by:	Antoine Brodin <antoine.brodin@laposte.net>
2005-12-23 21:33:55 +00:00
jhb
cb0d490ebe Tweak how the MD code calls the fooclock() methods some. Instead of
passing a pointer to an opaque clockframe structure and requiring the
MD code to supply CLKF_FOO() macros to extract needed values out of the
opaque structure, just pass the needed values directly.  In practice this
means passing the pair (usermode, pc) to hardclock() and profclock() and
passing the boolean (usermode) to hardclock_cpu() and hardclock_process().
Other details:
- Axe clockframe and CLKF_FOO() macros on all architectures.  Basically,
  all the archs were taking a trapframe and converting it into a clockframe
  one way or another.  Now they can just extract the PC and usermode values
  directly out of the trapframe and pass it to fooclock().
- Renamed hardclock_process() to hardclock_cpu() as the latter is more
  accurate.
- On Alpha, we now run profclock() at hz (profhz == hz) rather than at
  the slower stathz.
- On Alpha, for the TurboLaser machines that don't have an 8254
  timecounter, call hardclock() directly.  This removes an extra
  conditional check from every clock interrupt on Alpha on the BSP.
  There is probably room for even further pruning here by changing Alpha
  to use the simplified timecounter we use on x86 with the lapic timer
  since we don't get interrupts from the 8254 on Alpha anyway.
- On x86, clkintr() shouldn't ever be called now unless using_lapic_timer
  is false, so add a KASSERT() to that affect and remove a condition
  to slightly optimize the non-lapic case.
- Change prototypeof  arm_handler_execute() so that it's first arg is a
  trapframe pointer rather than a void pointer for clarity.
- Use KCOUNT macro in profclock() to lookup the kernel profiling bucket.

Tested on:	alpha, amd64, arm, i386, ia64, sparc64
Reviewed by:	bde (mostly)
2005-12-22 22:16:09 +00:00
imp
39e3e683e5 Move device 'cs' into i386/pc98 specific NOTES. It is broken on ppc
because it uses i386 specific calls.  Maybe it could be added to
amd64, but I'm not so sure it would work there so I've not added it
there.
2005-12-20 23:00:11 +00:00
jhb
fde66b5a2e Move the hostb driver out of the i386 and amd64 PCI code (where it was
duplicated anyways) and into a single MI driver.  Extend the driver a bit
to implement the bus and PCI kobj interfaces such that other drivers can
attach to it and transparently act as if their parent device is the PCI
bus (for the most part).
2005-12-20 21:09:45 +00:00
jhb
feebef55c2 Remove linux_mib_destroy() (which I actually added in between 5.0 and 5.1)
which existed to cleanup the linux_osname mutex.  Now that MTX_SYSINIT()
has grown a SYSUNINIT to destroy mutexes on unload, the extra destroy here
was redundant and resulted in panics in debug kernels.

MFC after:	1 week
Reported by:	Goran Gajic ggajic at afrodita dot rcub dot bg dot ac dot yu
2005-12-15 16:30:41 +00:00
jhb
2bc0431d83 Fix stale comment. 2005-12-14 21:47:02 +00:00
peter
9b3d762efb MFamd64 rev 1.223: Use the TSC to implement DELAY() if not marked broken
and it has been calibrated.
2005-12-13 19:08:55 +00:00
jhb
3bd2c66449 Revert previous commit. The BIOS braindamage is even worse than I
originally thought.  The BIOS that cleared CPUID_APIC actually managed
to disable the local APIC entirely and even Windows 64 doesn't boot on
it.

Reported by:	bz
2005-12-13 18:29:10 +00:00
jhb
76cd6764a4 Don't check the CPUID_APIC bit in the cpu_features flags field to determine
if the boot CPU has a local APIC because some BIOS vendors are not
competent enough to set this bit.  Instead, just assume that we always have
a local APIC on amd64.  For i386 the check is a bit more subtle.  FreeBSD
requires either an MP Table or an ACPI MADT table to enumerate APICs.  The
only systems that have one of those tables that don't have local APICs are
some presumably rare (and old) SMP 486 systems using external APICs.  Thus,
instead of checking the CPUID_APIC flag, check the CPU class and abort if
we are running on a 486.

MFC after:	1 week
Reported by:	bz
2005-12-13 15:09:40 +00:00
rodrigc
82f361258c Add support for 7320 and 915 PCIe chipsets.
Submitted by:	Gavin Atkinson <gavin.atkinson at ury dot york dot ac dot uk>
PR:		kern/79139
Reviewed by:	scottl
2005-12-08 18:55:15 +00:00
jhb
a1d5c4c24e Whitespace: reduce diffs with amd64. 2005-12-08 18:33:48 +00:00
jhb
0b37b8af54 - Cleanup whitespace and extra ()s in vtophys() macros.
- Move vtophys() macros next to vtopte() where vtopte() exists to match
  comments above vtopte().
- Remove references to the alternate address space in the comment above
  vtopte().  amd64 never had the alternate address space, and i386 lost it
  prior to PAE support being added.
- s/entires/entries/ in comments.

Reviewed by:	alc
2005-12-06 21:09:01 +00:00
jkim
18c4e589cc Fix ZERO_EDX() macro from the previous commit. It was emitting
`xor %ecx, %ecx', not `xor %edx, %edx'.
2005-12-06 20:11:07 +00:00
ru
f9739084f5 Drop _MACHINE_ARCH and _MACHINE defines (not to be confused with
MACHINE_ARCH and MACHINE).  Their purpose was to be able to test
in cpp(1), but cpp(1) only understands integer type expressions.
Using such unsupported expressions introduced a number of subtle
bugs, which were discovered by compiling with -Wundef.
2005-12-06 13:27:21 +00:00
jkim
9fbde6681e s/M_WAITOK/M_NOWAIT/ while mutex is held.
Pointed out by:	csjp
2005-12-06 07:22:01 +00:00
jkim
3bd9b70058 - Micro-optimize mov $0, %edx' -> xor %edx, %edx'.
- Correct amd64 macro style (no functional change).
2005-12-06 06:45:39 +00:00
jkim
055dc8e121 Add experimental BPF Just-In-Time compiler for amd64 and i386.
Use the following kernel configuration option to enable:

	options BPF_JITTER

If you want to use bpf_filter() instead (e. g., debugging), do:

	sysctl net.bpf.jitter.enable=0

to turn it off.

Currently BIOCSETWF and bpf_mtap2() are unsupported, and bpf_mtap() is
partially supported because 1) no need, 2) avoid expensive m_copydata(9).

Obtained from:	WinPcap 3.1 (for i386)
2005-12-06 02:58:12 +00:00
jhb
c77d4150b7 Change the i386 code to pass the interrupt vector as a separate argument
rather than embedding it in the intrframe as if_vec.  This reduces diffs
with amd64 somewhat.
- Remove cf_vec from clockframe (it wasn't used anyway) and stop pushing
  dummy vector arguments for ipi_bitmap_handler() and lapic_handle_timer()
  since clockframe == trapframe now.
- Fix ddb to handle stack traces across interrupt entry points that just
  have a trapframe on their stack and not a trapframe + vector.
- Change intr_execute_handlers() to take a trapframe rather than an
  intrframe pointer.
- Change lapic_handle_intr() and atpic_handle_intr() to take a vector and
  trapframe rather than an intrframe.
- GC struct intrframe now that nothing uses it anymore.
- GC CLOCK_TO_TRAPFRAME() and INTR_TO_TRAPFRAME().

Reviewed by:	bde
Requested by:	peter
2005-12-05 22:39:09 +00:00
jhb
aa9c5f3cdd - Move the code to deal with handling an IPI_STOP IPI out of
ipi_nmi_handler() and into a new cpustop_handler() function.  Change
  the Xcpustop IPI_STOP handler to call this function instead of
  duplicating all the same logic in assembly.
- EOI the local APIC for the lapic timer interrupt in C rather than
  assembly.
- Bump the lazypmap IPI counter if COUNT_IPIS is defined in C rather than
  assembly.
2005-12-05 22:25:41 +00:00
jhb
ec69f8e34c Don't panic if IRQ 13 doesn't exist. On some machines (see previous
commit to atpic.c) there may not be an IRQ 13.  Instead, just keep going.
If the INT16 interface doesn't work then we will eventually panic anyway.

FWIW: We could probably just axe the support for IRQ 13 altogether at this
point.  The only thing we'd lose support for are 486sx systems with
external 487 FPUs.

MFC after:	1 week
2005-12-05 22:11:44 +00:00
jhb
bd6187382d Really slam the door on mixed mode now that we don't depend on it for a
working IRQ0 with APIC anymore.  Previously, it was possible to have
some other ATPIC IRQS "leak" through in a few edge cases.  For example, on
my x86 test machine, ACPI re-routes the SCI (IRQ 9) to intpin 13 on the
first I/O APIC.  This leaves a hole for IRQ 13 (since the APIC doesn't
provide a source for IRQ 13 in that case) with the result that the ATPIC
IRQ13 source was registered instead.  This changes the 8259A drivers to
only register their interrupt sources if none of the 16 ISA IRQs have an
interrupt source already installed.

MFC after:	1 week
2005-12-05 22:09:30 +00:00
jhb
6df33a8d26 - Move PUSH_FRAME and POP_FRAME into machine/asmacros.h.
- Add a new SET_KERNEL_SREGS macro that sets up %ds and %es to point to
  kernel data and %fs to point to per-CPU data and use the new macro
  in several kernel entry points including trap and interrupt handlers.
- Convert the IPI_STOP handler Xcpustop to push a standard trap frame
  rather than an application frame.
- Make the TRAP() macro private to exception.s since it is only used
  there.
- Move the PCPU_*() macros in asmacros.h out of the middle of the
  profiling macros.

Reviewed by:	bde
Requested by:	bde (4, 5)
2005-12-05 21:44:47 +00:00
ru
6e96e6259d Prepare for MACHINE and hw.machine switching to "pc98" on FreeBSD/pc98.
Reviewed by:	nyan
2005-12-05 14:22:12 +00:00
ru
9b19d72862 Fix -Wundef warnings found when compiling i386 LINT, GENERIC and
custom kernels.
2005-12-05 11:58:35 +00:00
anholt
ec3e11dc52 Merge DRM CVS as of 2005-12-02, adding i915 DRM support thanks to Alexey Popov,
and a new r300 PCI ID.
2005-12-03 01:23:50 +00:00
anholt
3de8a0378f Update DRM to CVS snapshot as of 2005-11-28. Notable changes:
- S3 Savage driver ported.
- Added support for ATI_fragment_shader registers for r200.
- Improved r300 support, needed for latest r300 DRI driver.
- (possibly) r300 PCIE support, needs X.Org server from CVS.
- Added support for PCI Matrox cards.
- Software fallbacks fixed for Rage 128, which used to render badly or hang.
- Some issues reported by WITNESS are fixed.
- i915 module Makefile added, as the driver may now be working, but is untested.
- Added scripts for copying and preprocessing DRM CVS for inclusion in the
  kernel.  Thanks to Daniel Stone for getting me started on that.
2005-11-28 23:13:57 +00:00
jhb
f1fc36279d If we get a stray interrupt, return after logging it. In the extremely
rare case of a stray interrupt to an unregistered source (such as a stray
interrupt from the 8259As when using APIC), this could result in a page
fault when it tried to walk the list of interrupt handlers to execute
INTR_FAST handlers.  This bug was introduced with the intr_event changes,
so it's not present in 5.x or 6.x.

Submitted by:	Mark Tinguely tinguely at casselton dot net
2005-11-28 20:18:43 +00:00
ru
9fa3a162bc - Allow duplicate "machine" directives with the same arguments.
- Move existing "machine" directives to DEFAULTS.
2005-11-27 23:17:00 +00:00
le
23ed000881 Fix typo. 2005-11-24 15:28:32 +00:00
ru
2a0206e03e Add missing "struct" in i386/i386/machdep.c,v 1.497 by deischen@. 2005-11-24 08:16:18 +00:00
jhb
76c4913a46 Garbage collect machine/smptests.h now that it is empty and no longer used. 2005-11-22 22:55:48 +00:00
jhb
90e113054d Make COUNT_IPIS and COUNT_XINVLTLB_HITS real kernel options and take
them out of machine/smptests.h.
2005-11-22 22:54:42 +00:00
jhb
08b694daec Garbage collect unused {VERBOSE_,}CPUSTOP_ON_DDBBREAK macros. 2005-11-22 22:37:13 +00:00
jhb
fb5f967d56 Garbage collect the code to store diagnostics codes in a CMOS register
during SMP startup.  We haven't had any issues with starting up the APs
on i386 in quite a while now which is all this code is really useful for.
If someone ever does really need it they can always dig it up out of the
attic.
2005-11-22 22:34:14 +00:00
jhb
80adaaedab Don't enable PUC_FASTINTR by default in the source. Instead, enable it
via the DEFAULTS kernel configs.  This allows folks to turn it that option
off in the kernel configs if desired without having to hack the source.
This is especially useful since PUC_FASTINTR hangs the kernel boot on my
ultra60 which has two uart(4) devices hung off of a puc(4) device.

I did not enable PUC_FASTINTR by default on powerpc since powerpc does not
currently allow sharing of INTR_FAST with non-INTR_FAST like the other
archs.
2005-11-21 20:22:35 +00:00
alc
b77df1e33a Eliminate pmap_init2(). It's no longer used. 2005-11-20 06:09:49 +00:00
jhb
e1ea0a67e3 - Always print the trap number so that we have something to start with for
mystery traps.  If we don't have a message for a given trap, just use
  UNKNOWN for the message.
- Add trap messages for T_XMMFLT and T_RESERVED.

MFC after:	1 week
2005-11-18 19:26:46 +00:00
obrien
41744eae0f Fix spelling mistake.
Submitted by:	kris
2005-11-17 02:32:39 +00:00
jhb
46154df54a Revert a part of the previous commits to these files that made the NMI
IPI_STOP handling code use atomic_readandclear() to execute the restart
function on the first CPU to resume and restore the behavior of always
executing the restart function on the BSP since this is in fact what the
non-NMI IPI_STOP handler does.  I did add back in a statement to clear
the restart function pointer after it is executed to match the behavior
of the non-NMI IPI_STOP handler.
2005-11-16 20:58:40 +00:00
jhb
d1aa5c1d31 Revert previous commit to these files. There isn't a race necessitating
an xchg instruction as we only try to execute the startup function if
the CPU ID is 0 (i.e. the BSP).  I missed this earlier.
2005-11-16 20:55:57 +00:00
jhb
83cd89c741 Fix a typo in the check for an invalid APIC. If we are told about an
I/O APIC that doesn't exist, then a read of the version register is going
to return -1 which is 0xffffffff not 0xffffff.

Tested on:	i386
Tested by:	Nikos Ntarmos ntarmos at ceid dot upatras dot gr
MFC after:	1 week
2005-11-16 20:29:29 +00:00