The tlb flushing code uses the mm_users field of the mm_struct to
decide if each page table entry needs to be flushed individually with
IPTE or if a global flush for the mm_struct is sufficient after all page
table updates have been done. The comment for mm_users says "How many
users with user space?" but the /proc code increases mm_users after it
found the process structure by pid without creating a new user process.
Which makes mm_users useless for the decision between the two tlb
flusing methods. The current code can be confused to not flush tlb
entries by a concurrent access to /proc files if e.g. a fork is in
progres. The solution for this problem is to make the tlb flushing
logic independent from the mm_users field.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

fix this build error:
arch/s390/kernel/process.c:272: error: conflicting types for 'sys_execve'
arch/s390/kernel/entry.h:45: error: previous declaration of 'sys_execve' was here
make[1]: *** [arch/s390/kernel/process.o] Error 1
make: *** [arch/s390/kernel] Error 2

introduced by d7627467Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (27 commits)
  netfilter: fix CONFIG_COMPAT support
  isdn/avm: fix build when PCMCIA is not enabled
  header: fix broken headers for user space
  e1000e: don't check for alternate MAC addr on parts that don't support it
  e1000e: disable ASPM L1 on 82573
  ll_temac: Fix poll implementation
  netxen: fix a race in netxen_nic_get_stats()
  qlnic: fix a race in qlcnic_get_stats()
  irda: fix a race in irlan_eth_xmit()
  net: sh_eth: remove unused variable
  netxen: update version 4.0.74
  netxen: fix inconsistent lock state
  vlan: Match underlying dev carrier on vlan add
  ibmveth: Fix opps during MTU change on an active device
  ehea: Fix synchronization between HW and SW send queue
  bnx2x: Update bnx2x version to 1.52.53-4
  bnx2x: Fix PHY locking problem
  rds: fix a leak of kernel memory
  netlink: fix compat recvmsg
  netfilter: fix userspace header warning
  ...

Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86:
  hp-wmi: Fix query interface
  ACPI_TOSHIBA needs LEDS support

* 'for-upstream/pvhvm' of git://xenbits.xensource.com/people/ianc/linux-2.6:
  xen: pvhvm: make it clearer that XEN_UNPLUG_* define bits in a bitfield
  xen: pvhvm: rename xen_emul_unplug=ignore to =unnnecessary
  xen: pvhvm: allow user to request no emulated device unplug

* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6:
  setlocalversion: Ignote SCMs above the linux source tree
  makefile: not need to regenerate kernel.release file when make kernelrelease
  fixes for using make 3.82
  kconfig: fix segfault when detecting recursive dependency
  kconfig: fix savedefconfig with choice marked optional

* 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (33 commits)
  drm/radeon/kms: fix typo in radeon_compute_pll_gain
  drm/radeon/kms: try to detect tv vs monitor for underscan
  drm/radeon/kms: fix sideport detection on newer rs880 boards
  drm/radeon: fix passing wrong type to gem object create.
  drm/radeon/kms: set encoder type to DVI for HDMI on evergreen
  drm/radeon/kms: add back missing break in info ioctl
  drm/radeon/kms: don't enable MSIs on AGP boards
  drm/radeon/kms: fix agp mode setup on cards that use pcie bridges
  drm: move dereference below check
  drm: fix end of loop test
  drm/radeon/kms: rework radeon_dp_detect() logic
  drm/radeon/kms: add missing asic callback assignment for evergreen
  drm/radeon/kms/DCE3+: switch pads to ddc mode when going i2c
  drm/radeon/kms/pm: bail early if nothing's changing
  drm/radeon/kms/atom: clean up dig atom handling
  drm/radeon/kms: DCE3/4 transmitter fixes
  drm/radeon/kms: rework encoder handling
  drm/radeon/kms: DCE3/4 AdjustPixelPll updates
  drm/radeon: Fix stack data leak
  drm/radeon/kms: fix GTT/VRAM overlapping test
  ...

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin:
  Blackfin: wire up new fanotify/prlimit64 syscalls
  ADI/ASoC: add MAINTAINERS entries
  Blackfin: fix hweight breakage

commit f3c5c1bf
(netfilter: xtables: make ip_tables reentrant) forgot to
also compute the jumpstack size in the compat handlers.

Result is that "iptables -I INPUT -j userchain" turns into -j DROP.

Reported by Sebastian Roesner on #netfilter, closes
http://bugzilla.netfilter.org/show_bug.cgi?id=669.

Note: arptables change is compile-tested only.
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Tested-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: David S. Miller <davem@davemloft.net>

The machines I have appear to provide their return value in the arguments
structure, not the output structure. Rework the driver to use that again
in order to get rfkill working again.
Signed-off-by: Matthew Garrett <mjg@redhat.com>

Don't ask how ACPI_TOSHIBA got enabled on in desktop system's .config -
I don't know.  But it has silently been there until I tried 2.6.36-rc2,
where it broke the build because I don't have LED support turned on.
Attached patch fixes things up.

(I had to change BACKLIGHT_CLASS_DEVICE to "depends" because otherwise
I get unsightly core dumps out of scripts/kconfig/conf).

jon

--
toshiba: make sure we pull in LED support

The Toshiba extras driver uses the LED module, so make sure we have it
configure in.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Matthew Garrett <mjg@redhat.com>

dev_name always dereferences its argument, so it should not be called if
the argument is NULL.  The function indeed later tests the argument for
being NULL.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

  // <smpl>
  @@
  expression dev,E;
  @@

  *dev_name(dev)
  ... when != dev = E
  (
  *dev == NULL
  |
  *dev != NULL
  )
  // </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

* 'misc' of git://git.kernel.dk/linux-2.6-block:
  ipheth: add support for iPhone 4

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ASoC: i.MX ssi: use SSI_STCCR in synchronous mode
  ALSA: hda - Add support for Lenovo S10-3t
  ALSA: hda - Fix stream and channel-ids codec-bus wide
  ALSA: hda - Fix conflict of sticky PCM parameter in HDMI codecs
  ALSA: intel8x0: Mute External Amplifier by default for ThinkPad X31
  ALSA: hda - Fix build error with CONFIG_PROC_FS=n
  ALSA: hda - Add support for IDT 92HD89XX codecs

In synchronous mode the SSI_SRCCR values are ignored. Instead
SSI_STCCR must be used for both receiving and transmitting.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

by defining in terms of (1<<N).

XEN_UNPLUG_UNNECESSARY and XEN_UNPLUG_NEVER are only used within the
kernel and are not defined as a bit on the unplug IO port. Therefore
use a bit which is outside the potentially valid range of the 16 bit
IO port.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>

It is not immediately clear what this option causes to become
ignored. The actual meaning is that it is not necessary to unplug the
emulated devices to safely use the PV ones, even if the platform does
not support the unplug protocol. (pressumably the user will only add
this option if they have ensured that their domain configuration is
safe).

I think xen_emul_unplug=unnecessary better captures this.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>

this allows the user to disable pvhvm and revert to emulated devices
in case of a system misconfiguration (e.g. initramfs with only
emulated drivers in it).
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>

This adds support for the iPhone 4 to the ipheth driver.
Acked-by: Diego Giagio <diego@giagio.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

The recent commit to add constant optimization to hweight implicitly broke
the Blackfin arch.  Seems we were missed when all the other arches were
fixed with renames.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

This patch adds quirk for the Lenovo S10-3t so the headphone &
microphone jacks will now work.
Signed-off-by: Jerone Young <jerone.young@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Why wouldn't kconfig symbol ISDN_DRV_AVMB1_B1PCMCIA also depend on
PCMCIA?

Fix build for PCMCIA not enabled:

ERROR: "b1_free_card" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
ERROR: "b1ctl_proc_fops" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
ERROR: "b1_reset_ctr" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
ERROR: "b1_load_firmware" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
ERROR: "b1_send_message" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
ERROR: "b1_release_appl" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
ERROR: "b1_register_appl" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
ERROR: "b1_getrevision" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
ERROR: "b1_detect" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
ERROR: "b1_interrupt" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
ERROR: "b1_alloc_card" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Carsten Paeth <calle@calle.de>
Cc: Karsten Keil <isdn@linux-pingi.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

__packed is only defined in kernel space, so we should use
__attribute__((packed)) for the code shared between kernel and user space.

Two __attribute() annotations are replaced with __attribute__() too.
Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

* 'radix-tree' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/xfsdev:
  radix-tree: radix_tree_range_tag_if_tagged() can set incorrect tags
  radix-tree: clear all tags in radix_tree_node_rcu_free

Commit ebf8aa44 ("radix-tree:
omplement function radix_tree_range_tag_if_tagged") does not safely
set tags on on intermediate tree nodes. The code walks down the tree
setting tags before it has fully resolved the path to the leaf under
the assumption there will be a leaf slot with the tag set in the
range it is searching.

Unfortunately, this is not a valid assumption - we can abort after
setting a tag on an intermediate node if we overrun the number of
tags we are allowed to set in a batch, or stop scanning because we
we have passed the last scan index before we reach a leaf slot with
the tag we are searching for set.

As a result, we can leave the function with tags set on intemediate
nodes which can be tripped over later by tag-based lookups. The
result of these stale tags is that lookup may end prematurely or
livelock because the lookup cannot make progress.

The fix for the problem involves reocrding the traversal path we
take to the leaf nodes, and only propagating the tags back up the
tree once the tag is set in the leaf node slot. We are already
recording the path for efficient traversal, so there is no
additional overhead to do the intermediately node tag setting in
this manner.

This fixes a radix tree lookup livelock triggered by the new
writeback sync livelock avoidance code introduced in commit
f446daae ("mm: implement writeback
livelock avoidance using page tagging").
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Acked-by: Jan Kara <jack@suse.cz>

Commit f446daae ("mm: implement
writeback livelock avoidance using page tagging") introduced a new
radix tree tag, increasing the number of tags in each node from 2 to
3. It did not, however, fix up the code in
radix_tree_node_rcu_free() that cleans up after radix_tree_shrink()
and hence could leave stray tags set in the new tag array.

The result is that the livelock avoidance code added in the the
above commit would hit stale tags when doing tag based lookups,
resulting in livelocks when trying to traverse the tree.

Fix this problem in radix_tree_node_rcu_free() so it doesn't happen
again in the future by using a loop to walk all the tags up to
RADIX_TREE_MAX_TAGS to clear the stray tags radix_tree_shrink()
leaves behind.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Acked-by: Nick Piggin <npiggin@kernel.dk>
Acked-by: Jan Kara <jack@suse.cz>

* 'nouveau/for-airlied' of /ssd/git/drm-nouveau-next:
  drm/nouveau: fix earlier mistake when fixing merge conflict
  drm/nvc0: fix thinko in instmem suspend/resume
  drm/nouveau: Workaround missing GPIO tables on an Apple iMac G4 NV18.
  drm/nouveau: Add TV-out quirk for an MSI nForce2 IGP.
  drm/nv50-nvc0: ramht_size is meant to be in bytes, not entries
  drm/nouveau: punt some more log messages to debug level
  drm/nouveau: remove warning about unknown tmds table revisions
  drm/nouveau: check for error when allocating/mapping dummy page
  drm/nouveau: fix race condition when under memory pressure
  drm/nv50: fix minor thinko from nvc0 changes
  drm/nouveau: Don't try DDC on the dummy I2C channel.

Looks like this got copied from the ddx wrong.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

When enabling underscan for hdmi monitors, attempt to detect
whether we are driving a TV or a monitor.  The should hopefully
prevent underscan from being enabled on monitors attached via
hdmi that do not overscan the image.  Only enable underscan
if the mode is a common hdtv mode (480p, 720p, etc.).
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

The meaning of ucMemoryType changed on recent boards, however,
ulBootUpSidePortClock should be set properly across all boards.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

We are passing a ttm type when we want to pass true/false.
Reported-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

* 'kvm-updates/2.6.36' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: PIT: free irq source id in handling error path
  KVM: destroy workqueue on kvm_create_pit() failures
  KVM: fix poison overwritten caused by using wrong xstate size

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel: (58 commits)
  drm/i915,intel_agp: Add support for Sandybridge D0
  drm/i915: fix render pipe control notify on sandybridge
  agp/intel: set 40-bit dma mask on Sandybridge
  drm/i915: Remove the conflicting BUG_ON()
  drm/i915/suspend: s/IS_IRONLAKE/HAS_PCH_SPLIT/
  drm/i915/suspend: Flush register writes before busy-waiting.
  i915: disable DAC on Ironlake also when doing CRT load detection.
  drm/i915: wait for actual vblank, not just 20ms
  drm/i915: make sure eDP PLL is enabled at the right time
  drm/i915: fix VGA plane disable for Ironlake+
  drm/i915: eDP mode set sequence corrections
  drm/i915: add panel reset workaround
  drm/i915: Enable RC6 on Ironlake.
  drm/i915/sdvo: Only set is_lvds if we have a valid fixed mode.
  drm/i915: Set up a render context on Ironlake
  drm/i915 invalidate indirect state pointers at end of ring exec
  drm/i915: Wake-up wait_request() from elapsed hang-check (v2)
  drm/i915: Apply i830 errata for cursor alignment
  drm/i915: Only update i845/i865 CURBASE when disabled (v2)
  drm/i915: FBC is updated within set_base() so remove second call in mode_set()
  ...

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6:
  slab: fix object alignment
  slub: add missing __percpu markup in mm/slub_def.h

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2:
  nilfs2: wait for discard to finish