Merge tag 'samsung-dt-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into next/dt

Samsung DeviceTree update for v4.11:
1. Fixes for initial audio clocks configuration.
2. Enable sound on Odroid-X board.
3. Enable DMA for UART modules on Exynos5 SoCs.
4. Add CPU OPPs for Exynos4412 Prime (newer version of Exynos4412). This pulls
   necessary change in the clocks.
5. Remove Exynos4212. We do not have any mainline boards with it. This will
   simplify few bits later.

* tag 'samsung-dt-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
  ARM: dts: exynos: remove Exynos4212 support (dead code)
  ARM: dts: exynos: Add CPU OPPs for Exynos4412 Prime
  clk: samsung: Add CPU clk configuration data for Exynos4412 Prime
  ARM: dts: exynos: Enable DMA support for UART modules on Exynos5 SoCs
  ARM: dts: exynos: Cleanup Odroid-X2 and enable sound on Odroid-X
  ARM: dts: exynos: Fix initial audio clocks configuration on Exynos4 boards
  ARM: dts: exynos: Correct clocks for Exynos4 I2S module
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'sti-dt-for-v4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/pchotard/sti into next/dt

STi dts update:

Enable High Quality Video Data Plane (HQVDP) DT entry
Add DELTA V4L2 video decoder DT entry
Disable unused fdma instances
Fix sti-display-subsystem wrong clock parent's value
Cleanup and update DT entries related to remoteproc

* tag 'sti-dt-for-v4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/pchotard/sti:
  ARM: dts: STiH407-family: Supply Mailbox properties to delta RProc
  ARM: dts: STiH407-family: Supply mailbox properties to GP0 RProc
  ARM: dts: STiH407-family: update dmu remoteproc node
  ARM: dts: STiH407-family: remove gp1 remoteproc node
  ARM: dts: STiH407-family: remove audio remoteproc node
  ARM: dts: STiH407-family: update gp0_reserved memory region
  ARM: dts: STiH410-family: fix wrong parent clock frequency
  ARM: dts: STiH410: add DELTA dt node
  ARM: dts: STiH407-family: disable fdma1 and fdma2
  ARM: dts: STiH410: add hqvdp node
  ARM: dts: STiH410-B2120: enable sti-hda at board level
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'socfpga_dts_for_v4.11_part_1' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux into next/dt

SoCFPGA DTS updates for v4.11, part 1
- Adds FPGA manager bits
- Enable I2C on Cyclone5 and Arria5 devkits
- Adds LED support on C5/A5 devkits
- Enables CAN on C5 devkit
- Enables watchdog
- Add NAND on Arria10
- Add the LTC2977 Power Monitor on Arria10 devkit

* tag 'socfpga_dts_for_v4.11_part_1' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
  ARM: dts: socfpga: add missing compatible string for SDRAM controller
  ARM: dts: socfpga: add fpga region support on Arria10
  ARM: dts: socfpga: add base fpga region and fpga bridges
  ARM: dts: socfpga: fpga manager data is 32 bits
  ARM: dts: socfpga: Add NAND device tree for Arria10
  ARM: dts: socfpga: add fpga-manager node for Arria10
  ARM: dts: socfpga: add the LTC2977 power monitor on Arria10 devkit
  ARM: dts: socfpga: enable watchdog timer on Arria5 and Arria10
  ARM: dts: socfpga: enable CAN on Cyclone5 devkit
  ARM: dts: socfpga: Add Rohm DH2228FV DAC
  ARM: dts: socfpga: set desired i2c clock on Cyclone5 and Arria5 devkits
  ARM: dts: socfpga: enable GPIO and LEDs for Cyclone5 and Arria5 devkits
Signed-off-by: Olof Johansson <olof@lixom.net>

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

Signed-off-by: Loic Pallardy <loic.pallardy.chotard@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

Rename dmu_reserved to delta_reserved
Rename st231_dmu to st231_delta
Update the delta_reserved memory region start address
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

This node is unused, remove it
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

This node is unused, remove it
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

Update the start address of gp0_reserved memory region
and enable it
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

The clock parent was lower than child clock which is not correct.
In some use case, it leads to division by zero.
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>

This patch adds DT node for STMicroelectronics
DELTA V4L2 video decoder
Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com>

Only fdma0 instance is used for audio, so disable the
2 others instances.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

Enable High Quality Video Data Plane which is
an hardware IP dedicated to video rendering.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

As sti-hda is only available on STiH410-B2120,
disable it in STiH410.dtsi and enable it at board level.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

There are no Exynos4212 based boards in mainline, so there is no need to
keep additional files for SoCs, which are never used. This patch removes
support for Exynos4212 SoCs and moves previously shared Exynos4412
definitions to a single file to simplify future maintenance.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

Merge tag 'sunxi-generic-pinconf-for-4.10' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into next/dt

Allwinner conversion to generic pin muxing properties

Here is a list of patches that converts the current DT to the generic pin
control and muxing properties, now that the pinctrl driver supports it.

* tag 'sunxi-generic-pinconf-for-4.10' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
  ARM: sunxi: Convert pinctrl nodes to generic bindings
  ARM: sunxi: Remove useless allwinner,pull property
  ARM: sunxi: Remove useless allwinner,drive property
Signed-off-by: Olof Johansson <olof@lixom.net>

- Add dt-bindings includes for OX820 and OX810SE dtsi
- Replace reset and clock magic numbers for OX820 and OX810SE

* tag 'oxnas-arm-soc-dt-for-4.11' of https://github.com/OXNAS/linux:
  ARM: dts: OX820: Update with dt-bindings includes
  ARM: dts: OX810: Update with dt-bindings includes
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'renesas-dt-for-v4.11' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/dt

Renesas ARM Based SoC DT Updates for v4.11

* Add da9063 PMIC device node for system restart to gose board
* Add device node for PRR to SoCs where it was missing
* Move RST node before SYSC node where it was incorrectly placed
* Use Gen 2 fallback bindings for I2C, IIC, MSIOf and USB2 phy
* Use SoC-specific compat string for MMCIF where it was missing

* tag 'renesas-dt-for-v4.11' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: (25 commits)
  ARM: dts: r8a7790: Use R-Car Gen 2 fallback binding for msiof nodes
  ARM: dts: r8a7792: Use R-Car Gen 2 fallback binding for msiof nodes
  ARM: dts: r8a7791: Use R-Car Gen 2 fallback binding for msiof nodes
  ARM: dts: r8a7794: Use R-Car Gen 2 fallback binding for iic nodes
  ARM: dts: r8a7793: Use R-Car Gen 2 fallback binding for iic nodes
  ARM: dts: r8a7791: Use R-Car Gen 2 fallback binding for iic nodes
  ARM: dts: r8a7790: Use R-Car Gen 2 fallback binding for iic nodes
  ARM: dts: r8a7794: Use R-Car Gen 2 fallback binding for i2c nodes
  ARM: dts: r8a7793: Use R-Car Gen 2 fallback binding for i2c nodes
  ARM: dts: r8a7792: Use R-Car Gen 2 fallback binding for i2c nodes
  ARM: dts: r8a7791: Use R-Car Gen 2 fallback binding for i2c nodes
  ARM: dts: r8a7790: Use R-Car Gen 2 fallback binding for i2c nodes
  ARM: dts: r8a7778: Use R-Car Gen 1 fallback binding for i2c nodes
  ARM: dts: r8a7779: Use R-Car Gen 1 fallback binding for i2c nodes
  ARM: dts: r8a7794: Use renesas,rcar-gen2-usb-phy fallback binding
  ARM: dts: r8a7791: Use renesas,rcar-gen2-usb-phy fallback binding
  ARM: dts: r8a7790: Use renesas,rcar-gen2-usb-phy fallback binding
  ARM: dts: gose: Add da9063 PMIC device node for system restart
  ARM: dts: sh73a0: Use SoC-specific compat string for mmcif
  ARM: dts: r8a7778: Use SoC-specific compat string for mmcif
  ...
Signed-off-by: Olof Johansson <olof@lixom.net>

Pull USB fixes from Greg KH:
 "Here are a bunch of USB fixes for 4.10-rc3. Yeah, it's a lot, an
  artifact of the holiday break I think.

  Lots of gadget and the usual XHCI fixups for reported issues (one day
  that driver will calm down...) Also included are a bunch of usb-serial
  driver fixes, and for good measure, a number of much-reported MUSB
  driver issues have finally been resolved.

  All of these have been in linux-next with no reported issues"

* tag 'usb-4.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (72 commits)
  USB: fix problems with duplicate endpoint addresses
  usb: ohci-at91: use descriptor-based gpio APIs correctly
  usb: storage: unusual_uas: Add JMicron JMS56x to unusual device
  usb: hub: Move hub_port_disable() to fix warning if PM is disabled
  usb: musb: blackfin: add bfin_fifo_offset in bfin_ops
  usb: musb: fix compilation warning on unused function
  usb: musb: Fix trying to free already-free IRQ 4
  usb: musb: dsps: implement clear_ep_rxintr() callback
  usb: musb: core: add clear_ep_rxintr() to musb_platform_ops
  USB: serial: ti_usb_3410_5052: fix NULL-deref at open
  USB: serial: spcp8x5: fix NULL-deref at open
  USB: serial: quatech2: fix sleep-while-atomic in close
  USB: serial: pl2303: fix NULL-deref at open
  USB: serial: oti6858: fix NULL-deref at open
  USB: serial: omninet: fix NULL-derefs at open and disconnect
  USB: serial: mos7840: fix misleading interrupt-URB comment
  USB: serial: mos7840: remove unused write URB
  USB: serial: mos7840: fix NULL-deref at open
  USB: serial: mos7720: remove obsolete port initialisation
  USB: serial: mos7720: fix parallel probe
  ...

Pull char/misc fixes from Greg KH:
 "Here are a few small char/misc driver fixes for 4.10-rc3.

  Two MEI driver fixes, and three NVMEM patches for reported issues, and
  a new Hyper-V driver MAINTAINER update. Nothing major at all, all have
  been in linux-next with no reported issues"

* tag 'char-misc-4.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  hyper-v: Add myself as additional MAINTAINER
  nvmem: fix nvmem_cell_read() return type doc
  nvmem: imx-ocotp: Fix wrong register size
  nvmem: qfprom: Allow single byte accesses for read/write
  mei: move write cb to completion on credentials failures
  mei: bus: fix mei_cldev_enable KDoc

Pull staging/IIO fixes from Greg KH:
 "Here are some staging and IIO driver fixes for 4.10-rc3.

  Most of these are minor IIO fixes of reported issues, along with one
  network driver fix to resolve an issue. And a MAINTAINERS update with
  a new mailing list. All of these, except the MAINTAINERS file update,
  have been in linux-next with no reported issues (the MAINTAINERS patch
  happened on Friday...)"

* tag 'staging-4.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  MAINTAINERS: add greybus subsystem mailing list
  staging: octeon: Call SET_NETDEV_DEV()
  iio: accel: st_accel: fix LIS3LV02 reading and scaling
  iio: common: st_sensors: fix channel data parsing
  iio: max44000: correct value in illuminance_integration_time_available
  iio: adc: TI_AM335X_ADC should depend on HAS_DMA
  iio: bmi160: Fix time needed to sleep after command execution
  iio: 104-quad-8: Fix active level mismatch for the preset enable option
  iio: 104-quad-8: Fix off-by-one errors when addressing IOR
  iio: 104-quad-8: Fix index control configuration

Several people report seeing warnings about inconsistent radix tree
nodes followed by crashes in the workingset code, which all looked like
use-after-free access from the shadow node shrinker.

Dave Jones managed to reproduce the issue with a debug patch applied,
which confirmed that the radix tree shrinking indeed frees shadow nodes
while they are still linked to the shadow LRU:

  WARNING: CPU: 2 PID: 53 at lib/radix-tree.c:643 delete_node+0x1e4/0x200
  CPU: 2 PID: 53 Comm: kswapd0 Not tainted 4.10.0-rc2-think+ #3
  Call Trace:
     delete_node+0x1e4/0x200
     __radix_tree_delete_node+0xd/0x10
     shadow_lru_isolate+0xe6/0x220
     __list_lru_walk_one.isra.4+0x9b/0x190
     list_lru_walk_one+0x23/0x30
     scan_shadow_nodes+0x2e/0x40
     shrink_slab.part.44+0x23d/0x5d0
     shrink_node+0x22c/0x330
     kswapd+0x392/0x8f0

This is the WARN_ON_ONCE(!list_empty(&node->private_list)) placed in the
inlined radix_tree_shrink().

The problem is with 14b46879 ("mm: workingset: move shadow entry
tracking to radix tree exceptional tracking"), which passes an update
callback into the radix tree to link and unlink shadow leaf nodes when
tree entries change, but forgot to pass the callback when reclaiming a
shadow node.

While the reclaimed shadow node itself is unlinked by the shrinker, its
deletion from the tree can cause the left-most leaf node in the tree to
be shrunk.  If that happens to be a shadow node as well, we don't unlink
it from the LRU as we should.

Consider this tree, where the s are shadow entries:

       root->rnode
            |
       [0       n]
        |       |
     [s    ] [sssss]

Now the shadow node shrinker reclaims the rightmost leaf node through
the shadow node LRU:

       root->rnode
            |
       [0        ]
        |
    [s     ]

Because the parent of the deleted node is the first level below the
root and has only one child in the left-most slot, the intermediate
level is shrunk and the node containing the single shadow is put in
its place:

       root->rnode
            |
       [s        ]

The shrinker again sees a single left-most slot in a first level node
and thus decides to store the shadow in root->rnode directly and free
the node - which is a leaf node on the shadow node LRU.

  root->rnode
       |
       s

Without the update callback, the freed node remains on the shadow LRU,
where it causes later shrinker runs to crash.

Pass the node updater callback into __radix_tree_delete_node() in case
the deletion causes the left-most branch in the tree to collapse too.

Also add warnings when linked nodes are freed right away, rather than
wait for the use-after-free when the list is scanned much later.

Fixes: 14b46879 ("mm: workingset: move shadow entry tracking to radix tree exceptional tracking")
Reported-by: Dave Chinner <david@fromorbit.com>
Reported-by: Hugh Dickins <hughd@google.com>
Reported-by: Andrea Arcangeli <aarcange@redhat.com>
Reported-and-tested-by: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Chris Leech <cleech@redhat.com>
Cc: Lee Duncan <lduncan@suse.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Matthew Wilcox <mawilcox@linuxonhyperv.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

4.10-rc loadtest (even on x86, and even without THPCache) fails with
"fork: Cannot allocate memory" or some such; and /proc/meminfo shows
PageTables growing.

Commit 953c66c2 ("mm: THP page cache support for ppc64") that got
merged in rc1 removed the freeing of an unused preallocated pagetable
after do_fault_around() has called map_pages().

This is usually a good optimization, so that the followup doesn't have
to reallocate one; but it's not sufficient to shift the freeing into
alloc_set_pte(), since there are failure cases (most commonly
VM_FAULT_RETRY) which never reach finish_fault().

Check and free it at the outer level in do_fault(), then we don't need
to worry in alloc_set_pte(), and can restore that to how it was (I
cannot find any reason to pte_free() under lock as it was doing).

And fix a separate pagetable leak, or crash, introduced by the same
change, that could only show up on some ppc64: why does do_set_pmd()'s
failure case attempt to withdraw a pagetable when it never deposited
one, at the same time overwriting (so leaking) the vmf->prealloc_pte?
Residue of an earlier implementation, perhaps? Delete it.

Fixes: 953c66c2 ("mm: THP page cache support for ppc64")
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Michael Neuling <mikey@neuling.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull kbuild fix from Michal Marek:
 "The asm-prototypes.h file added in the last merge window results in
  invalid code with CONFIG_KMEMCHECK=y. The net result is that genksyms
  segfaults.

  This pull request fixes the header, the genksyms fix is in my kbuild
  branch for 4.11"

* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  asm-prototypes: Clear any CPP defines before declaring the functions

The Greybus driver subsystem has a mailing list, so list it in the
MAINTAINERS file so that people know to send patches there as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Pull sound fixes from Takashi Iwai:
 "Nothing particular stands out, only a few small fixes for USB-audio,
  HD-audio and Firewire. The USB-audio fix is the respin of the previous
  race fix after a revert due to the regression"

* tag 'sound-4.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  Revert "ALSA: firewire-lib: change structure member with proper type"
  ALSA: usb-audio: test EP_FLAG_RUNNING at urb completion
  ALSA: usb-audio: Fix irq/process data synchronization
  ALSA: hda - Apply asus-mode8 fixup to ASUS X71SL
  ALSA: hda - Fix up GPIO for ASUS ROG Ranger
  ALSA: firewire-lib: change structure member with proper type
  ALSA: firewire-tascam: Fix to handle error from initialization of stream data
  ALSA: fireworks: fix asymmetric API call at unit removal

Pull clk fixes from Stephen Boyd:
 "One fix for a broken driver on Renesas RZ/A1 SoCs with bootloaders
  that don't turn all the clks on and another fix for stm32f4 SoCs where
  we have multiple drivers attaching to the same DT node"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: stm32f4: Use CLK_OF_DECLARE_DRIVER initialization method
  clk: renesas: mstp: Support 8-bit registers for r7s72100

Merge tag 'hwmon-for-linus-v4.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon fix from Guenter Roeck:
 "Fix temp1_max_alarm attribute in lm90 driver"

* tag 'hwmon-for-linus-v4.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (lm90) fix temp1_max_alarm attribute

Pull KVM fixes from Radim Krčmář:
 "MIPS:
   - fix host kernel crashes when receiving a signal with 64-bit
     userspace

   - flush instruction cache on all vcpus after generating entry code

     (both for stable)

  x86:
   - fix NULL dereference in MMU caused by SMM transitions (for stable)

   - correct guest instruction pointer after emulating some VMX errors

   - minor cleanup"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: VMX: remove duplicated declaration
  KVM: MIPS: Flush KVM entry code from icache globally
  KVM: MIPS: Don't clobber CP0_Status.UX
  KVM: x86: reset MMU on KVM_SET_VCPU_EVENTS
  KVM: nVMX: fix instruction skipping during emulated vm-entry

Pull arm64 fixes from Catalin Marinas:

 - re-introduce the arm64 get_current() optimisation

 - KERN_CONT fallout fix in show_pte()

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: restore get_current() optimisation
  arm64: mm: fix show_pte KERN_CONT fallout

Pull VFIO fixes from Alex Williamson:
 - Add mtty sample driver properly into build system (Alex Williamson)
 - Restore type1 mapping performance after mdev (Alex Williamson)
 - Fix mdev device race (Alex Williamson)
 - Cleanups to the mdev ABI used by vendor drivers (Alex Williamson)
 - Build fix for old compilers (Arnd Bergmann)
 - Fix sample driver error path (Dan Carpenter)
 - Handle pci_iomap() error (Arvind Yadav)
 - Fix mdev ioctl return type (Paul Gortmaker)

* tag 'vfio-v4.10-rc3' of git://github.com/awilliam/linux-vfio:
  vfio-mdev: fix non-standard ioctl return val causing i386 build fail
  vfio-pci: Handle error from pci_iomap
  vfio-mdev: fix some error codes in the sample code
  vfio-pci: use 32-bit comparisons for register address for gcc-4.5
  vfio-mdev: Make mdev_device private and abstract interfaces
  vfio-mdev: Make mdev_parent private
  vfio-mdev: de-polute the namespace, rename parent_device & parent_ops
  vfio-mdev: Fix remove race
  vfio/type1: Restore mapping performance with mdev support
  vfio-mdev: Fix mtty sample driver building

Merge branch 'stable/for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb

Pull swiotlb fixes from Konrad Rzeszutek Wilk:
 "This has one fix to make i915 work when using Xen SWIOTLB, and a
  feature from Geert to aid in debugging of devices that can't do DMA
  outside the 32-bit address space.

  The feature from Geert is on top of v4.10 merge window commit
  (specifically you pulling my previous branch), as his changes were
  dependent on the Documentation/ movement patches.

  I figured it would just easier than me trying than to cherry-pick the
  Documentation patches to satisfy git.

  The patches have been soaking since 12/20, albeit I updated the last
  patch due to linux-next catching an compiler error and adding an
  Tested-and-Reported-by tag"

* 'stable/for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb:
  swiotlb: Export swiotlb_max_segment to users
  swiotlb: Add swiotlb=noforce debug option
  swiotlb: Convert swiotlb_force from int to enum
  x86, swiotlb: Simplify pci_swiotlb_detect_override()

Pull IOMMU fixes from Joerg Roedel:
 "Three fixes queued up:

   - fix an issue with command buffer overflow handling in the AMD IOMMU
     driver

   - add an additional context entry flush to the Intel VT-d driver to
     make sure any old context entry from kdump copying is flushed out
     of the cache

   - correct the encoding of the PASID table size in the Intel VT-d
     driver"

* tag 'iommu-fixes-v4.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/amd: Fix the left value check of cmd buffer
  iommu/vt-d: Fix pasid table size encoding
  iommu/vt-d: Flush old iommu caches for kdump when the device gets context mapped

Pull ACPI fixes from Rafael Wysocki:
 "These fix a device enumeration problem related to _ADR matching and an
  IOMMU initialization issue related to the DMAR table missing, remove
  an excessive function call from the core ACPI code, update an error
  message in the ACPI WDAT watchdog driver and add a way to work around
  problems with unhandled GPE notifications.

  Specifics:

   - Fix a device enumeration issue leading to incorrect associations
     between ACPI device objects and platform device objects
     representing physical devices if the given device object has both
     _ADR and _HID (Rafael Wysocki).

   - Avoid passing NULL to acpi_put_table() during IOMMU initialization
     which triggers a (rightful) warning from ACPICA (Rafael Wysocki).

   - Drop an excessive call to acpi_dma_deconfigure() from the core code
     that binds ACPI device objects to device objects representing
     physical devices (Lorenzo Pieralisi).

   - Update an error message in the ACPI WDAT watchdog driver to make it
     provide more useful information (Mika Westerberg).

   - Add a mechanism to work around issues with unhandled GPE
     notifications that occur during system initialization and cannot be
     prevented by means of sysfs (Lv Zheng)"

* tag 'acpi-4.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / DMAR: Avoid passing NULL to acpi_put_table()
  ACPI / scan: Prefer devices without _HID/_CID for _ADR matching
  ACPI / watchdog: Print out error number when device creation fails
  ACPI / sysfs: Provide quirk mechanism to prevent GPE flooding
  ACPI: Drop misplaced acpi_dma_deconfigure() call from acpi_bind_one()

Pull power management fixes from Rafael Wysocki:
 "These fix a few issues in the intel_pstate driver, a documetation
  issue, a false-positive compiler warning in the generic power domains
  framework and two problems in the devfreq subsystem. They also update
  the MAINTAINERS entry for devfreq and add a new "compatible" string to
  the generic cpufreq-dt driver.

  Specifics:

   - Fix a few intel_pstate driver issues: add missing locking it two
     places, avoid exposing a useless debugfs interface and keep the
     attribute values in sysfs in sync (Rafael Wysocki).

   - Drop confusing kernel-doc references related to power management
     and ACPI from the driver API manual (Rafael Wysocki).

   - Make a false-positive compiler warning in the generic power domains
     framework go away (Augusto Mecking Caringi).

   - Fix two initialization issues in the devfreq subsystem and update
     the MAINTAINERS entry for it (Chanwoo Choi).

   - Add a new "compatible" string for APM X-Gene 2 to the generic DT
     cpufreq driver (Hoan Tran)"

* tag 'pm-4.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: dt: Add support for APM X-Gene 2
  PM / devfreq: exynos-bus: Fix the wrong return value
  PM / devfreq: Fix the bug of devfreq_add_device when governor is NULL
  MAINTAINERS: Add myself as reviewer for DEVFREQ subsystem support
  PM / docs: Drop confusing kernel-doc references from infrastructure.rst
  PM / domains: Fix 'may be used uninitialized' build warning
  cpufreq: intel_pstate: Always keep all limits settings in sync
  cpufreq: intel_pstate: Use locking in intel_cpufreq_verify_policy()
  cpufreq: intel_pstate: Use locking in intel_pstate_resume()
  cpufreq: intel_pstate: Do not expose PID parameters in passive mode

So they can figure out what is the optimal number of pages
that can be contingously stitched together without fear of
bounce buffer.

We also expose an mechanism for sub-users of SWIOTLB API, such
as Xen-SWIOTLB to set the max segment value. And lastly
if swiotlb=force is set (which mandates we bounce buffer everything)
we set max_segment so at least we can bounce buffer one 4K page
instead of a giant 512KB one for which we may not have space.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reported-and-Tested-by: Juergen Gross <jgross@suse.com>

* acpi-scan:
  ACPI / scan: Prefer devices without _HID/_CID for _ADR matching
  ACPI: Drop misplaced acpi_dma_deconfigure() call from acpi_bind_one()

* acpi-sysfs:
  ACPI / sysfs: Provide quirk mechanism to prevent GPE flooding

* acpi-wdat:
  ACPI / watchdog: Print out error number when device creation fails

* acpi-tables:
  ACPI / DMAR: Avoid passing NULL to acpi_put_table()

* pm-domains:
  PM / domains: Fix 'may be used uninitialized' build warning

* pm-docs:
  PM / docs: Drop confusing kernel-doc references from infrastructure.rst

* pm-devfreq:
  PM / devfreq: exynos-bus: Fix the wrong return value
  PM / devfreq: Fix the bug of devfreq_add_device when governor is NULL
  MAINTAINERS: Add myself as reviewer for DEVFREQ subsystem support

* pm-cpufreq:
  cpufreq: dt: Add support for APM X-Gene 2
  cpufreq: intel_pstate: Always keep all limits settings in sync
  cpufreq: intel_pstate: Use locking in intel_cpufreq_verify_policy()
  cpufreq: intel_pstate: Use locking in intel_pstate_resume()
  cpufreq: intel_pstate: Do not expose PID parameters in passive mode