Commit Graph

12393 Commits

Author SHA1 Message Date
Warner Losh
ebf4319503 Locking for todr got pushed down into inittodr and the client
libraries it calls (although some might not be doing it right). We are
serialized right now by giant as well. This means the splsoftclock are
now an anachronism that has no benefit, even marking where locking
needs to happen. Remove them.
2013-02-21 07:16:40 +00:00
Konstantin Belousov
31a53cd036 Convert machine/elf.h, machine/frame.h, machine/sigframe.h,
machine/signal.h and machine/ucontext.h into common x86 includes,
copying from amd64 and merging with i386.

Kernel-only compat definitions are kept in the i386/include/sigframe.h
and i386/include/signal.h, to reduce amd64 kernel namespace pollution.
The amd64 compat uses its own definitions so far.

The _MACHINE_ELF_WANT_32BIT definition is to allow the
sys/boot/userboot/userboot/elf32_freebsd.c to use i386 ELF definitions
on the amd64 compile host.  The same hack could be usefully abused by
other code too.
2013-02-20 17:39:52 +00:00
Jung-uk Kim
00a54dfb1c Consistently use round_page(x) rather than roundup(x, PAGE_SIZE). There is
no functional change.
2013-02-15 22:43:08 +00:00
Andriy Gapon
1a89ca4cf5 cpususpend_handler: mark AP as resumed only after fully setting up lapic
Reviewed by:	jhb
Tested by:	Sergey V. Dyatko <sergey.dyatko@gmail.com>,
		KAHO Toshikazu <kaho@elam.kais.kyoto-u.ac.jp>
MFC after:	12 days
2013-02-02 12:04:32 +00:00
Andriy Gapon
548b201607 x86 suspend/resume: suspend pics and pseudo-pics in reverse order
- change 'pics' from STAILQ to TAILQ
- ensure that Local APIC is always first in 'pics'

Reviewed by:	jhb
Tested by:	Sergey V. Dyatko <sergey.dyatko@gmail.com>,
		KAHO Toshikazu <kaho@elam.kais.kyoto-u.ac.jp>
MFC after:	12 days
2013-02-02 12:02:42 +00:00
Eitan Adler
4752ed3d7f Remove support for plip from the GENERIC kernel as no systems in the
last 10 years require this support.

Discussed with:	db
Discussed with:	kib
Reviewed by:	imp
Reviewed by:	jhb
Reviewed by:	-hackers
Approved by:	cperciva (mentor)
2013-02-01 20:17:11 +00:00
Andre Oppermann
8291b48244 Remove unused VM_MAX_AUTOTUNE_NMBCLUSTERS define. 2013-02-01 14:16:37 +00:00
John Baldwin
d825ce0a5d Reduce duplication between i386/linux/linux.h and amd64/linux32/linux.h
by moving bits that are MI out into headers in compat/linux.

Reviewed by:	Chagin Dmitry  dmitry | gmail
MFC after:	2 weeks
2013-01-29 18:41:30 +00:00
John Baldwin
fb709557a3 Don't assume that all Linux TCP-level socket options are identical to
FreeBSD TCP-level socket options (only the first two are).  Instead,
using a mapping function and fail unsupported options as we do for other
socket option levels.

MFC after:	2 weeks
2013-01-23 21:44:48 +00:00
John Baldwin
b5821c6f0e Fix build with SMP disabled.`
Reported by:	bf
2013-01-19 01:18:22 +00:00
John Baldwin
f876ffeae3 Don't attempt to use clflush on the local APIC register window. Various
CPUs exhibit bad behavior if this is done (Intel Errata AAJ3, hangs on
Pentium-M, and trashing of the local APIC registers on a VIA C7).  The
local APIC is implicitly mapped UC already via MTRRs, so the clflush isn't
necessary anyway.

MFC after:	2 weeks
2013-01-17 21:32:25 +00:00
Bryan Venteicher
ae366ffcbd Add VirtIO to the i386 and amd64 GENERIC kernels
This also removes the kludge from r239009 that covered only
the network driver.

Reviewed by:	grehan
Approved by:	grehan (mentor)
MFC after:	1 week
2013-01-13 07:14:16 +00:00
Konstantin Belousov
0dcbedfa61 Enable the UFS quotas for big-iron GENERIC kernels.
Discussed with:	      mckusick
MFC after:	      2 weeks
2013-01-03 19:03:41 +00:00
Dag-Erling Smørgrav
36fca20f10 As discussed on -current last October, remove the firewire drivers from
GENERIC.
2013-01-03 14:30:24 +00:00
Marius Strobl
9355088a94 Fix !INVARIANTS && !SMP build.
MFC after:	3 days
2013-01-03 01:09:50 +00:00
Jim Harris
f2fcc434ee Revert r243960 based on feedback regarding keeping x86 headers unified
(mdf@, tijl@) and use of KASSERT/systm.h in bus.h (zeising@, bde@).

Alternate implementation will be made in a separate commit.
2012-12-13 21:27:20 +00:00
Jim Harris
71a30c4436 Add amd64 implementations for 8-byte bus_space routines.
Submitted by:	Carl Delsey <carl.r.delsey@intel.com>
Discussed with:	jhb, rwatson
Reviewed by:	jimharris
MFC after:	1 week
2012-12-06 22:33:31 +00:00
Konstantin Belousov
349438a243 Print the frame addresses for the backtraces on i386 and amd64. It
allows both to inspect the frame sizes and to manually peek into the
frames from ddb, if needed.

Reviewed by:	dim
MFC after:	2 weeks
2012-12-03 22:16:51 +00:00
Jung-uk Kim
7609e73ca0 Remove duplicate code. Reduce diff between amd64 and i386. 2012-12-01 00:56:19 +00:00
Jung-uk Kim
8c2b353ead Use volatile keywords properly. 2012-11-30 20:15:01 +00:00
Jung-uk Kim
231ac244f8 Tidy up inline assembly. No functional change. 2012-11-30 00:59:37 +00:00
Dimitry Andric
bdea742cf7 Fix a minor warning in sys/i386/xen/clock.c.
MFC after:	3 days
2012-11-12 20:50:11 +00:00
Alfred Perlstein
79f62ed690 Allow maxusers to scale on machines with large address space.
Some hooks are added to clamp down maxusers and nmbclusters for
small address space systems.

VM_MAX_AUTOTUNE_MAXUSERS - the max maxusers that will be autotuned based on
physical memory.
VM_MAX_AUTOTUNE_NMBCLUSTERS - max nmbclusters based on physical memory.

These are set to the old values on i386 to preserve the clamping that was
being done to all arches.

Another macro VM_AUTOTUNE_NMBCLUSTERS is provided to allow an override
for the calculation on a MD basis.  Currently no arch defines this.

Reviewed by: peter
MFC after: 2 weeks
2012-11-10 02:08:40 +00:00
Attilio Rao
cfedf924d3 Rework the known rwlock to benefit about staying on their own
cache line in order to avoid manual frobbing but using
struct rwlock_padalign.

Reviewed by:	alc, jimharris
2012-11-03 23:03:14 +00:00
Konstantin Belousov
140dedb81c The r241025 fixed the case when a binary, executed from nullfs mount,
was still possible to open for write from the lower filesystem.  There
is a symmetric situation where the binary could already has file
descriptors opened for write, but it can be executed from the nullfs
overlay.

Handle the issue by passing one v_writecount reference to the lower
vnode if nullfs vnode has non-zero v_writecount.  Note that only one
write reference can be donated, since nullfs only keeps one use
reference on the lower vnode.  Always use the lower vnode v_writecount
for the checks.

Introduce the VOP_GET_WRITECOUNT to read v_writecount, which is
currently always bypassed to the lower vnode, and VOP_ADD_WRITECOUNT
to manipulate the v_writecount value, which manages a single bypass
reference to the lower vnode.  Caling the VOPs instead of directly
accessing v_writecount provide the fix described in the previous
paragraph.

Tested by:	pho
MFC after:	3 weeks
2012-11-02 13:56:36 +00:00
Konstantin Belousov
9065aa6497 Add missed sched_pin().
Submitted by:	Svatopluk Kraus <onwahe@gmail.com>
Reviewed by:	alc
MFC after:	3 days
2012-10-24 18:21:22 +00:00
Konstantin Belousov
5050aa86cf Remove the support for using non-mpsafe filesystem modules.
In particular, do not lock Giant conditionally when calling into the
filesystem module, remove the VFS_LOCK_GIANT() and related
macros. Stop handling buffers belonging to non-mpsafe filesystems.

The VFS_VERSION is bumped to indicate the interface change which does
not result in the interface signatures changes.

Conducted and reviewed by:	attilio
Tested by:	pho
2012-10-22 17:50:54 +00:00
Eitan Adler
a8de37b024 This isn't functionally identical. In some cases a hint to disable
unit 0 would in fact disable all units.

This reverts r241856

Approved by: cperciva (implicit)
2012-10-22 13:06:09 +00:00
Eitan Adler
1611e2c0d1 The 'testing memory' patch gets printed too many times
Approved by: cperciva (implicit)
2012-10-22 11:57:26 +00:00
Eitan Adler
76b7512247 Now that device disabling is generic, remove extraneous code from the
device drivers that used to provide this feature.

Reviewed by:	des
Approved by:	cperciva
MFC after:	1 week
2012-10-22 03:41:14 +00:00
Eitan Adler
267cc84937 Explain the upcoming delay by printing a message when the kernel
is about to begin testing memory.

Reviewed by:	dteske, adri
Approved by:	cperciva
MFC after:	1 week
2012-10-22 03:16:39 +00:00
Konstantin Belousov
737ced3ecf MFamd64: add machdep.uprintf_signal.
MFC after:	1 week
2012-10-14 17:09:50 +00:00
Andriy Gapon
851dbc07af pciereg_cfg*: use assembly to access the mem-mapped cfg space
AMD BKDG for CPU families 10h and later requires that the memory
mapped config is always read into or written from al/ax/eax register.

Discussed with:	kib, alc
Reviewed by:	kib (earlier version)
MFC after:	25 days
2012-10-14 10:13:50 +00:00
Alan Cox
c1a16a1fb2 Replace all uses of the vm page queues lock by a new R/W lock.
Unfortunately, this lock cannot be defined as static under Xen because it
is (ab)used to serialize queued page table changes.

Tested by:	sbruno
2012-10-12 23:26:00 +00:00
Alan Cox
0bec9f73db MFi386 r241356
Add several asserts.

MFC after:	3 days
2012-10-10 17:15:34 +00:00
Kevin Lo
9823d52705 Revert previous commit...
Pointyhat to:	kevlo (myself)
2012-10-10 08:36:38 +00:00
Attilio Rao
3a4730256a Add an unified macro to deny ability from the compiler to reorder
instruction loads/stores at its will.
The macro __compiler_membar() is currently supported for both gcc and
clang, but kernel compilation will fail otherwise.

Reviewed by:	bde, kib
Discussed with:	dim, theraven
MFC after:	2 weeks
2012-10-09 14:32:30 +00:00
Attilio Rao
af2bdacafb Reverts r234074,234105,234564,234723,234989,235231-235232 and part of
r234247.
Use, instead, the static intializer introduced in r239923 for x86 and
sparc64 intr_cpus, unwinding the code to the initial version.

Reviewed by:	marius
2012-10-09 12:22:43 +00:00
Kevin Lo
a10cee30c9 Prefer NULL over 0 for pointers 2012-10-09 08:27:40 +00:00
Konstantin Belousov
4e4458327a Add several asserts to i386 pmap, which mostly state that pv entry shall
have corresponding pte.

Reviewed by:	alc
Tested by:	pho
MFC after:	3 days
2012-10-08 18:33:08 +00:00
Alan Cox
e1de0706a0 In a few places, like the implementation of ptrace(), a thread may call
upon pmap_enter() to create a mapping within a different address space,
i.e., not the thread's own address space.  On i386, this entails the
creation of a temporary mapping to the affected page table page (PTP).  In
general, pmap_enter() will read from this PTP, allocate a PV entry, and
write to this PTP.  The trouble comes when the system is short of memory.
In order to allocate a new PV entry, an older PV entry has to be
reclaimed.  Reclaiming a PV entry involves destroying a mapping, which
requires access to the affected PTP.  Thus, the PTP mapped at the
beginning of pmap_enter() is no longer mapped at the end of pmap_enter(),
which leads to pmap_enter() modifying the wrong PTP.  To address this
problem, pmap_pv_reclaim() is changed to use an alternate method of
mapping PTPs.

Update a related comment.

Reported by:	pho
Diagnosed by:	kib
MFC after:	5 days
2012-10-08 16:57:05 +00:00
Kenneth D. Merry
25aae1bed3 Add the mps(4) driver to the i386 GENERIC config file. LSI has tested it
on i386 and verified that it works.

Submitted by:	Harald Schmalzbauer, John Baldwin, Kashyap Desai
MFC after:	3 days
2012-10-01 21:42:32 +00:00
Kevin Lo
954c5baed9 Add missing header needed by free(9).
Spotted by:	David Wolfskill <david at catwhisker dot org>
2012-09-30 15:42:20 +00:00
Kevin Lo
b5db12bfb5 Free result of device_get_children(9). 2012-09-30 09:21:10 +00:00
John Baldwin
960b5a7080 - Re-shuffle the <machine/pc/bios.h> headers to move all kernel-specific
bits under #ifdef _KERNEL but leave definitions for various structures
  defined by standards ($PIR table, SMAP entries, etc.) available to
  userland.
- Consolidate duplicate SMBIOS table structure definitions in ipmi(4)
  and smbios(4) in <machine/pc/bios.h> and make them available to
  userland.

MFC after:	2 weeks
2012-09-28 11:59:32 +00:00
Alan Cox
e4b8a2fc5a Eliminate a stale comment. It describes another use case for the pmap in
Mach that doesn't exist in FreeBSD.
2012-09-28 05:30:59 +00:00
Dimitry Andric
f99157cced After r205013, amd64 and i386 CPU family and model IDs were printed out
in hexadecimal, but without any 0x prefix, which can be very misleading.

MFC after:	3 days
2012-09-21 10:31:19 +00:00
Jim Harris
eb85d44f06 Integrate nvme(4) and nvd(4) into the amd64 and i386 builds.
Sponsored by:	Intel
2012-09-17 19:26:33 +00:00
Eitan Adler
582212fa04 s/teh/the/g
Approved by:	cperciva
MFC after:	3 days
2012-09-14 21:59:55 +00:00
Konstantin Belousov
c5e3d0ab11 Rename the IVY_RNG option to RDRAND_RNG.
Based on submission by:	Arthur Mesh <arthurmesh@gmail.com>
MFC after:	2 weeks
2012-09-13 10:12:16 +00:00