orangefs: miscellaneous improvements and feature negotiation

Two OrangeFS updates:

 "Pull in an OrangeFS branch containing miscellaneous improvements.

  - clean up debugfs globals
  - remove dead code in sysfs
  - reorganize duplicated sysfs attribute structs
  - consolidate sysfs show and store functions
  - remove duplicated sysfs_ops structures
  - describe organization of sysfs
  - make devreq_mutex static
  - g_orangefs_stats -> orangefs_stats for consistency
  - rename most remaining global variables"

 "Pull in an OrangeFS branch containing improvements which the userspace
  component and the kernel to negotiate mutually supported features."

Pull in an OrangeFS branch containing miscellaneous improvements.

- clean up debugfs globals
- remove dead code in sysfs
- reorganize duplicated sysfs attribute structs
- consolidate sysfs show and store functions
- remove duplicated sysfs_ops structures
- describe organization of sysfs
- make devreq_mutex static
- g_orangefs_stats -> orangefs_stats for consistency
- rename most remaining global variables

Pull in an OrangeFS branch containing improvements which the userspace
component and the kernel to negotiate mutually supported features.

OrangeFS 2.9.6 was released without support for the features op. Thus
OrangeFS 2.9.7 will be required to use it.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>

Only op_timeout_secs, slot_timeout_secs, and hash_table_size are left
because they are exposed as module parameters. All other global
variables have the orangefs_ prefix.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>

Signed-off-by: Martin Brandenburg <martin@omnibond.com>

Signed-off-by: Martin Brandenburg <martin@omnibond.com>

Signed-off-by: Martin Brandenburg <martin@omnibond.com>

Signed-off-by: Martin Brandenburg <martin@omnibond.com>

Remove a good bit of obfuscated and duplicated code.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>

We had a separate struct type for each type of attribute, but they all
did the exact same thing. Consolidate them into one
struct orangefs_attribute type.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>

We had a pageful of structures containing kobjects and variables to store
sysfs entries. However only the kobjects were in use. Replace them with
kobjects.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>

Mostly this is moving code into orangefs-debugfs.c so that globals turn
into static globals.

Then gossip_debug_mask is renamed orangefs_gossip_debug_mask but keeps
global visibility, so it can be used from a macro.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>

Signed-off-by: Martin Brandenburg <martin@omnibond.com>

This is a new userspace operation, which will be done if the client-core
version is greater than or equal to 2.9.6. This will provide a way to
implement optional features and to determine which features are
supported by the client-core. If the client-core version is older than
2.9.6, no optional features are supported and the op will not be done.

The intent is to allow protocol extensions without relying on the
client-core's current behavior of ignoring what it doesn't understand.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>

The client reports its version to the kernel on startup. We already test
that it is above the minimum version. Now we record it in a global
variable so code elsewhere can consult it before making a request the
client may not understand.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>

orangefs: integrate readahead cache changes from out-of-tree

The readahead cache has long been present as a compile time option to
OrangeFS. As it had not been tested in some time, it was disabled by
default. Recently, Walt Ligon started work reviving it, which eventually
culminated in the commit below to OrangeFS SVN.

r12519 | walt | 2016-07-13 14:32:42 -0400 (Wed, 13 Jul 2016) | 1 line
reintegrating readahead cache code

This cache is implemented almost entirely in userspace. There are a few
parameters exposed via sysfs, and the cache must be flushed after an
inode is released.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>

Signed-off-by: Martin Brandenburg <martin@omnibond.com>

This will support a upcoming request where two related values need to be
updated atomically.

This was done without a union in the OrangeFS server source already. Since
that will break the kernel protocol, it has been fixed there and done here
in a way that does not break the kernel protocol.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>

Signed-off-by: Martin Brandenburg <martin@omnibond.com>

This has been dormant code for many years. Parts of it were removed from
the OrangeFS kernel code when it went into mainline. These bits were missed.
Now the readahead cache has been resurrected in the OrangeFS userspace
portions. It was renamed there, since it doesn't really have anything to do
with mmap specifically, so it will be renamed here.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>

Pull orangefs update from Martin Brandenburg:
 "Kernel side caching and executable bugfix

  This allows OrangeFS to utilize the dcache and adds an in kernel
  attribute cache.  We previously used the user side client for this
  purpose.

  We see a modest performance increase on small file operations.  For
  example, without the cache, compiling coreutils takes about 17
  minutes.  With the patch and a 50 millisecond timeout for
  dcache_timeout_msecs and getattr_timeout_msecs (the default),
  compiling coreutils takes about 6 minutes 20 seconds.  On the same
  hardware, compiling coreutils on an xfs filesystem takes 90 seconds.
  We see similar improvements with mdtest and a test involving writing,
  reading, and deleting a large number of small files.

  Interested parties can review more data at the following URL.

    https://docs.google.com/spreadsheets/d/1v4aUeppKexIbRMz_Yn9k4eaM3uy2KCaPoe_93YKWOtA/pubhtml

  The eventual goal of this is to allow getdents to turn into a
  readdirplus to the OrangeFS server.  The cache will be filled then,
  which should provide a performance benefit to the common case of
  readdir followed by getattr on each entry (i.e.  ls -l).

  This also fixes a bug.  When orangefs_inode_permission was added, it
  did not collect i_size from the OrangeFS server, since this presses an
  unnecessary load on the OrangeFS server.  However, it left a case
  where i_size is never initialized.  Then running an executable could
  fail.

  With this patch, size is always collected to be inserted into the
  cache.  Thus the bug disappears.  If this patch is not accepted during
  this merge window, we will send a one-line band-aid for this bug
  instead"

* tag 'for-linus-v4.8' of git://github.com/martinbrandenburg/linux:
  Orangefs: update orangefs.txt
  orangefs: Account for jiffies wraparound.
  orangefs: Change default dcache and getattr timeout to 50 msec.
  orangefs: Allow dcache and getattr cache time to be configured.
  orangefs: Cache getattr results.
  orangefs: Use d_time to avoid excessive lookups

Pull Ceph updates from Ilya Dryomov:
 "The highlights are:

   - RADOS namespace support in libceph and CephFS (Zheng Yan and
     myself).  The stopgaps added in 4.5 to deny access to inodes in
     namespaces are removed and CEPH_FEATURE_FS_FILE_LAYOUT_V2 feature
     bit is now fully supported

   - A large rework of the MDS cap flushing code (Zheng Yan)

   - Handle some of ->d_revalidate() in RCU mode (Jeff Layton).  We were
     overly pessimistic before, bailing at the first sight of LOOKUP_RCU

  On top of that we've got a few CephFS bug fixes, a couple of cleanups
  and Arnd's workaround for a weird genksyms issue"

* tag 'ceph-for-4.8-rc1' of git://github.com/ceph/ceph-client: (34 commits)
  ceph: fix symbol versioning for ceph_monc_do_statfs
  ceph: Correctly return NXIO errors from ceph_llseek
  ceph: Mark the file cache as unreclaimable
  ceph: optimize cap flush waiting
  ceph: cleanup ceph_flush_snaps()
  ceph: kick cap flushes before sending other cap message
  ceph: introduce an inode flag to indicates if snapflush is needed
  ceph: avoid sending duplicated cap flush message
  ceph: unify cap flush and snapcap flush
  ceph: use list instead of rbtree to track cap flushes
  ceph: update types of some local varibles
  ceph: include 'follows' of pending snapflush in cap reconnect message
  ceph: update cap reconnect message to version 3
  ceph: mount non-default filesystem by name
  libceph: fsmap.user subscription support
  ceph: handle LOOKUP_RCU in ceph_d_revalidate
  ceph: allow dentry_lease_is_valid to work under RCU walk
  ceph: clear d_fsinfo pointer under d_lock
  ceph: remove ceph_mdsc_lease_release
  ceph: don't use ->d_time
  ...

Pull i915 drm fixes from Dave Airlie:
 "These are the two fixes from Ville for the bug you are seeing on your
  HSW laptop.

  They pretty much disable PSR in some cases where the panel reports a
  setup time that would cause issues, like you seem to have"

* tag 'drm-psr-fixes-for-v4.8' of git://people.freedesktop.org/~airlied/linux:
  drm/i915: Check PSR setup time vs. vblank length
  drm/dp: Add drm_dp_psr_setup_time()

Pull PCI updates from Bjorn Helgaas:
 "Highlights:

   - ARM64 support for ACPI host bridges

   - new drivers for Axis ARTPEC-6 and Marvell Aardvark

   - new pci_alloc_irq_vectors() interface for MSI-X, MSI, legacy INTx

   - pci_resource_to_user() cleanup (more to come)

  Detailed summary:

  Enumeration:
   - Move ecam.h to linux/include/pci-ecam.h (Jayachandran C)
   - Add parent device field to ECAM struct pci_config_window (Jayachandran C)
   - Add generic MCFG table handling (Tomasz Nowicki)
   - Refactor pci_bus_assign_domain_nr() for CONFIG_PCI_DOMAINS_GENERIC (Tomasz Nowicki)
   - Factor DT-specific pci_bus_find_domain_nr() code out (Tomasz Nowicki)

  Resource management:
   - Add devm_request_pci_bus_resources() (Bjorn Helgaas)
   - Unify pci_resource_to_user() declarations (Bjorn Helgaas)
   - Implement pci_resource_to_user() with pcibios_resource_to_bus() (microblaze, powerpc, sparc) (Bjorn Helgaas)
   - Request host bridge window resources (designware, iproc, rcar, xgene, xilinx, xilinx-nwl) (Bjorn Helgaas)
   - Make PCI I/O space optional on ARM32 (Bjorn Helgaas)
   - Ignore write combining when mapping I/O port space (Bjorn Helgaas)
   - Claim bus resources on MIPS PCI_PROBE_ONLY set-ups (Bjorn Helgaas)
   - Remove unicore32 pci=firmware command line parameter handling (Bjorn Helgaas)
   - Support I/O resources when parsing host bridge resources (Jayachandran C)
   - Add helpers to request/release memory and I/O regions (Johannes Thumshirn)
   - Use pci_(request|release)_mem_regions (NVMe, lpfc, GenWQE, ethernet/intel, alx) (Johannes Thumshirn)
   - Extend pci=resource_alignment to specify device/vendor IDs (Koehrer Mathias (ETAS/ESW5))
   - Add generic pci_bus_claim_resources() (Lorenzo Pieralisi)
   - Claim bus resources on ARM32 PCI_PROBE_ONLY set-ups (Lorenzo Pieralisi)
   - Remove ARM32 and ARM64 arch-specific pcibios_enable_device() (Lorenzo Pieralisi)
   - Add pci_unmap_iospace() to unmap I/O resources (Sinan Kaya)
   - Remove powerpc __pci_mmap_set_pgprot() (Yinghai Lu)

  PCI device hotplug:
   - Allow additional bus numbers for hotplug bridges (Keith Busch)
   - Ignore interrupts during D3cold (Lukas Wunner)

  Power management:
   - Enforce type casting for pci_power_t (Andy Shevchenko)
   - Don't clear d3cold_allowed for PCIe ports (Mika Westerberg)
   - Put PCIe ports into D3 during suspend (Mika Westerberg)
   - Power on bridges before scanning new devices (Mika Westerberg)
   - Runtime resume bridge before rescan (Mika Westerberg)
   - Add runtime PM support for PCIe ports (Mika Westerberg)
   - Remove redundant check of pcie_set_clkpm (Shawn Lin)

  Virtualization:
   - Add function 1 DMA alias quirk for Marvell 88SE9182 (Aaron Sierra)
   - Add DMA alias quirk for Adaptec 3805 (Alex Williamson)
   - Mark Atheros AR9485 and QCA9882 to avoid bus reset (Chris Blake)
   - Add ACS quirk for Solarflare SFC9220 (Edward Cree)

  MSI:
   - Fix PCI_MSI dependencies (Arnd Bergmann)
   - Add pci_msix_desc_addr() helper (Christoph Hellwig)
   - Switch msix_program_entries() to use pci_msix_desc_addr() (Christoph Hellwig)
   - Make the "entries" argument to pci_enable_msix() optional (Christoph Hellwig)
   - Provide sensible IRQ vector alloc/free routines (Christoph Hellwig)
   - Spread interrupt vectors in pci_alloc_irq_vectors() (Christoph Hellwig)

  Error Handling:
   - Bind DPC to Root Ports as well as Downstream Ports (Keith Busch)
   - Remove DPC tristate module option (Keith Busch)
   - Convert Downstream Port Containment driver to use devm_* functions (Mika Westerberg)

  Generic host bridge driver:
   - Select IRQ_DOMAIN (Arnd Bergmann)
   - Claim bus resources on PCI_PROBE_ONLY set-ups (Lorenzo Pieralisi)

  ACPI host bridge driver:
   - Add ARM64 acpi_pci_bus_find_domain_nr() (Tomasz Nowicki)
   - Add ARM64 ACPI support for legacy IRQs parsing and consolidation with DT code (Tomasz Nowicki)
   - Implement ARM64 AML accessors for PCI_Config region (Tomasz Nowicki)
   - Support ARM64 ACPI-based PCI host controller (Tomasz Nowicki)

  Altera host bridge driver:
   - Check link status before retrain link (Ley Foon Tan)
   - Poll for link up status after retraining the link (Ley Foon Tan)

  Axis ARTPEC-6 host bridge driver:
   - Add PCI_MSI_IRQ_DOMAIN dependency (Arnd Bergmann)
   - Add DT binding for Axis ARTPEC-6 PCIe controller (Niklas Cassel)
   - Add Axis ARTPEC-6 PCIe controller driver (Niklas Cassel)

  Intel VMD host bridge driver:
   - Use lock save/restore in interrupt enable path (Jon Derrick)
   - Select device dma ops to override (Keith Busch)
   - Initialize list item in IRQ disable (Keith Busch)
   - Use x86_vector_domain as parent domain (Keith Busch)
   - Separate MSI and MSI-X vector sharing (Keith Busch)

  Marvell Aardvark host bridge driver:
   - Add DT binding for the Aardvark PCIe controller (Thomas Petazzoni)
   - Add Aardvark PCI host controller driver (Thomas Petazzoni)
   - Add Aardvark PCIe support for Armada 3700 (Thomas Petazzoni)

  Microsoft Hyper-V host bridge driver:
   - Fix interrupt cleanup path (Cathy Avery)
   - Don't leak buffer in hv_pci_onchannelcallback() (Vitaly Kuznetsov)
   - Handle all pending messages in hv_pci_onchannelcallback() (Vitaly Kuznetsov)

  NVIDIA Tegra host bridge driver:
   - Program PADS_REFCLK_CFG* always, not just on legacy SoCs (Stephen Warren)
   - Program PADS_REFCLK_CFG* registers with per-SoC values (Stephen Warren)
   - Use lower-case hex consistently for register definitions (Thierry Reding)
   - Use generic pci_remap_iospace() rather than ARM32-specific one (Thierry Reding)
   - Stop setting pcibios_min_mem (Thierry Reding)

  Renesas R-Car host bridge driver:
   - Drop gen2 dummy I/O port region (Bjorn Helgaas)

  TI DRA7xx host bridge driver:
   - Fix return value in case of error (Christophe JAILLET)

  Xilinx AXI host bridge driver:
   - Fix return value in case of error (Christophe JAILLET)

  Miscellaneous:
   - Make bus_attr_resource_alignment static (Ben Dooks)
   - Include <asm/dma.h> for isa_dma_bridge_buggy (Ben Dooks)
   - MAINTAINERS: Add file patterns for PCI device tree bindings (Geert Uytterhoeven)
   - Make host bridge drivers explicitly non-modular (Paul Gortmaker)"

* tag 'pci-v4.8-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (125 commits)
  PCI: xgene: Make explicitly non-modular
  PCI: thunder-pem: Make explicitly non-modular
  PCI: thunder-ecam: Make explicitly non-modular
  PCI: tegra: Make explicitly non-modular
  PCI: rcar-gen2: Make explicitly non-modular
  PCI: rcar: Make explicitly non-modular
  PCI: mvebu: Make explicitly non-modular
  PCI: layerscape: Make explicitly non-modular
  PCI: keystone: Make explicitly non-modular
  PCI: hisi: Make explicitly non-modular
  PCI: generic: Make explicitly non-modular
  PCI: designware-plat: Make it explicitly non-modular
  PCI: artpec6: Make explicitly non-modular
  PCI: armada8k: Make explicitly non-modular
  PCI: artpec: Add PCI_MSI_IRQ_DOMAIN dependency
  PCI: Add ACS quirk for Solarflare SFC9220
  arm64: dts: marvell: Add Aardvark PCIe support for Armada 3700
  PCI: aardvark: Add Aardvark PCI host controller driver
  dt-bindings: add DT binding for the Aardvark PCIe controller
  PCI: tegra: Program PADS_REFCLK_CFG* registers with per-SoC values
  ...

Bspec says:
"Restriction : SRD must not be enabled when the PSR Setup time from DPCD
00071h is greater than the time for vertical blank minus one line."

Let's check for that and disallow PSR if we exceed the limit.

Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

Add a small helper to parse the PSR setup time from the DPCD PSR
capabilities and return the value in microseconds.

v2: Don't waste so many bytes on the psr_setup_time_us[] table

Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

Pull MTD updates from Brian Norris:
 "NAND:

    Quoting Boris:
     'This pull request contains only one notable change:
       - Addition of the MTK NAND controller driver

      And a bunch of specific NAND driver improvements/fixes. Here are the
      changes that are worth mentioning:
       - A few fixes/improvements for the xway NAND controller driver
       - A few fixes for the sunxi NAND controller driver
       - Support for DMA in the sunxi NAND driver
       - Support for the sunxi NAND controller IP embedded in A23/A33 SoCs
       - Addition for bitflips detection in erased pages to the brcmnand driver
       - Support for new brcmnand IPs
       - Update of the OMAP-GPMC binding to support DMA channel description'

    In addition, some small fixes around error handling, etc., as well
    as one long-standing corner case issue (2.6.20, I think?) with
    writing 1 byte less than a page.

  NOR:

   - rework some error handling on reads and writes, so we can better
     handle (for instance) SPI controllers which have limitations on
     their maximum transfer size

   - add new Cadence Quad SPI flash controller driver

   - add new Atmel QSPI flash controller driver

   - add new Hisilicon SPI flash controller driver

   - support a few new flash, and update supported features on others

   - fix the logic used for detecting a fully-unlocked flash

  And other miscellaneous small fixes"

* tag 'for-linus-20160801' of git://git.infradead.org/linux-mtd: (60 commits)
  mtd: spi-nor: don't build Cadence QuadSPI on non-ARM
  mtd: mtk-nor: remove duplicated include from mtk-quadspi.c
  mtd: nand: fix bug writing 1 byte less than page size
  mtd: update description of MTD_BCM47XXSFLASH symbol
  mtd: spi-nor: Add driver for Cadence Quad SPI Flash Controller
  mtd: spi-nor: Bindings for Cadence Quad SPI Flash Controller driver
  mtd: nand: brcmnand: Change BUG_ON in brcmnand_send_cmd
  mtd: pmcmsp-flash: Allocating too much in init_msp_flash()
  mtd: maps: sa1100-flash: potential NULL dereference
  mtd: atmel-quadspi: add driver for Atmel QSPI controller
  mtd: nand: omap2: fix return value check in omap_nand_probe()
  Documentation: atmel-quadspi: add binding file for Atmel QSPI driver
  mtd: spi-nor: add hisilicon spi-nor flash controller driver
  mtd: spi-nor: support dual, quad, and WP for Gigadevice
  mtd: spi-nor: Added support for n25q00a.
  memory: Update dependency of IFC for Layerscape
  mtd: nand: jz4780: Update MODULE_AUTHOR email address
  mtd: nand: sunxi: prevent a small memory leak
  mtd: nand: sunxi: add reset line support
  mtd: nand: sunxi: update DT bindings
  ...

Pull misc kbuild updates from Michal Marek:

 - coccicheck script improvements by Luis Rodriguez and Deepa Dinamani

 - new coccinelle patches by Yann Droneaud and Vaishali Thakkar

 - debian packaging fixes by Wilfried Klaebe, Henning Schild and Marcin
   Mielniczuk

* 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  Fix the Debian packaging script on systems with no codename
  builddeb: fix file permissions before packaging
  scripts/coccinelle: require coccinelle >= 1.0.4 on device_node_continue.cocci
  coccicheck: refer to Documentation/coccinelle.txt and wiki
  coccicheck: add support for requring a coccinelle version
  scripts: add Linux .cocciconfig for coccinelle
  coccicheck: replace --very-quiet with --quiet when debugging
  coccicheck: add support for DEBUG_FILE
  coccicheck: enable parmap support
  coccicheck: make SPFLAGS more useful
  coccicheck: move spatch binary check up
  builddeb: really include objtool binary in headers package
  coccinelle: catch krealloc() on devm_*() allocated memory
  coccinelle: recognize more devm_* memory allocation functions
  coccinelle: also catch kzfree() issues
  coccicheck: Allow for overriding spatch flags
  Coccinelle: noderef: Add new rules and correct the old rule

Pull kbuild updates from Michal Marek:

 - GCC plugin support by Emese Revfy from grsecurity, with a fixup from
   Kees Cook.  The plugins are meant to be used for static analysis of
   the kernel code.  Two plugins are provided already.

 - reduction of the gcc commandline by Arnd Bergmann.

 - IS_ENABLED / IS_REACHABLE macro enhancements by Masahiro Yamada

 - bin2c fix by Michael Tautschnig

 - setlocalversion fix by Wolfram Sang

* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  gcc-plugins: disable under COMPILE_TEST
  kbuild: Abort build on bad stack protector flag
  scripts: Fix size mismatch of kexec_purgatory_size
  kbuild: make samples depend on headers_install
  Kbuild: don't add obj tree in additional includes
  Kbuild: arch: look for generated headers in obtree
  Kbuild: always prefix objtree in LINUXINCLUDE
  Kbuild: avoid duplicate include path
  Kbuild: don't add ../../ to include path
  vmlinux.lds.h: replace config_enabled() with IS_ENABLED()
  kconfig.h: allow to use IS_{ENABLE,REACHABLE} in macro expansion
  kconfig.h: use already defined macros for IS_REACHABLE() define
  export.h: use __is_defined() to check if __KSYM_* is defined
  kconfig.h: use __is_defined() to check if MODULE is defined
  kbuild: setlocalversion: print error to STDERR
  Add sancov plugin
  Add Cyclomatic complexity GCC plugin
  GCC plugin infrastructure
  Shared library support

Pull KVM updates from Paolo Bonzini:

 - ARM: GICv3 ITS emulation and various fixes.  Removal of the
   old VGIC implementation.

 - s390: support for trapping software breakpoints, nested
   virtualization (vSIE), the STHYI opcode, initial extensions
   for CPU model support.

 - MIPS: support for MIPS64 hosts (32-bit guests only) and lots
   of cleanups, preliminary to this and the upcoming support for
   hardware virtualization extensions.

 - x86: support for execute-only mappings in nested EPT; reduced
   vmexit latency for TSC deadline timer (by about 30%) on Intel
   hosts; support for more than 255 vCPUs.

 - PPC: bugfixes.

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (302 commits)
  KVM: PPC: Introduce KVM_CAP_PPC_HTM
  MIPS: Select HAVE_KVM for MIPS64_R{2,6}
  MIPS: KVM: Reset CP0_PageMask during host TLB flush
  MIPS: KVM: Fix ptr->int cast via KVM_GUEST_KSEGX()
  MIPS: KVM: Sign extend MFC0/RDHWR results
  MIPS: KVM: Fix 64-bit big endian dynamic translation
  MIPS: KVM: Fail if ebase doesn't fit in CP0_EBase
  MIPS: KVM: Use 64-bit CP0_EBase when appropriate
  MIPS: KVM: Set CP0_Status.KX on MIPS64
  MIPS: KVM: Make entry code MIPS64 friendly
  MIPS: KVM: Use kmap instead of CKSEG0ADDR()
  MIPS: KVM: Use virt_to_phys() to get commpage PFN
  MIPS: Fix definition of KSEGX() for 64-bit
  KVM: VMX: Add VMCS to CPU's loaded VMCSs before VMPTRLD
  kvm: x86: nVMX: maintain internal copy of current VMCS
  KVM: PPC: Book3S HV: Save/restore TM state in H_CEDE
  KVM: PPC: Book3S HV: Pull out TM state save/restore into separate procedures
  KVM: arm64: vgic-its: Simplify MAPI error handling
  KVM: arm64: vgic-its: Make vgic_its_cmd_handle_mapi similar to other handlers
  KVM: arm64: vgic-its: Turn device_id validation into generic ID validation
  ...

Describe use of jiffy-based timeout values involved in inode maintenance.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Signed-off-by: Martin Brandenburg <martin@omnibond.com>

Signed-off-by: Martin Brandenburg <martin@omnibond.com>

Signed-off-by: Martin Brandenburg <martin@omnibond.com>

Signed-off-by: Martin Brandenburg <martin@omnibond.com>

The userspace component attempts to do this, but this will prevent
us from even needing to go into userspace to satisfy certain getattr
requests.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>

Signed-off-by: Martin Brandenburg <martin@omnibond.com>

Pull more s390 updates from Martin Schwidefsky:

 - some cleanup for the hugetlbfs pte/pmd conversion functions

 - the code to check for the minimum CPU type is converted from
   assembler to C and an informational message is added in case the CPU
   is not new enough to run the kernel

 - bug fixes

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/ftrace/jprobes: Fix conflict between jprobes and function graph tracing
  s390: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO
  s390/zcrypt: fix possible memory leak in ap_module_init()
  s390/numa: only set possible nodes within node_possible_map
  s390/als: fix compile with gcov enabled
  s390/facilities: do not generate DWORDS define anymore
  s390/als: print missing facilities on facility mismatch
  s390/als: print machine type on facility mismatch
  s390/als: convert architecture level set code to C
  s390/sclp: move uninitialized data to data section
  s390/zcrypt: Fix zcrypt suspend/resume behavior
  s390/cio: fix premature wakeup during chp configure
  s390/cio: convert cfg_lock mutex to spinlock
  s390/mm: clean up pte/pmd encoding

Merge drm updates from Dave Airlie:
 "This is the main drm pull request for 4.8.

  I'm down with a cold at the moment so hopefully this isn't in too bad
  a state, I finished pulling stuff last week mostly (nouveau fixes just
  went in today), so only this message should be influenced by illness.
  Apologies to anyone who's major feature I missed :-)

  Core:
        Lockless GEM BO freeing
        Non-blocking atomic work
        Documentation changes (rst/sphinx)
        Prep for new fencing changes
        Simple display helpers
        Master/auth changes
        Register/unregister rework
        Loads of trivial patches/fixes.

  New stuff:
        ARM Mali display driver (not the 3D chip)
        sii902x RGB->HDMI bridge

  Panel:
        Support for new panels
        Improved backlight support

  Bridge:
        Convert ADV7511 to bridge driver
        ADV7533 support
        TC358767 (DSI/DPI to eDP) encoder chip support

  i915:
        BXT support enabled by default
        GVT-g infrastructure
        GuC command submission and fixes
        BXT workarounds
        SKL/BKL workarounds
        Demidlayering device registration
        Thundering herd fixes
        Missing pci ids
        Atomic updates

  amdgpu/radeon:
        ATPX improvements for better dGPU power control on PX systems
        New power features for CZ/BR/ST
        Pipelined BO moves and evictions in TTM
        GPU scheduler improvements
        GPU reset improvements
        Overclocking on dGPUs with amdgpu
        Polaris powermanagement enabled

  nouveau:
        GK20A/GM20B volt and clock improvements.
        Initial support for GP100/GP104 GPUs, GP104 will not yet support
        acceleration due to NVIDIA having not released firmware for them as of yet.

  exynos:
        Exynos5433 SoC with IOMMU support.

  vc4:
        Shader validation for branching

  imx-drm:
        Atomic mode setting conversion
        Reworked DMFC FIFO allocation
        External bridge support

  analogix-dp:
        RK3399 eDP support
        Lots of fixes.

  rockchip:
        Lots of small fixes.

  msm:
        DT bindings cleanups
        Shrinker and madvise support
        ASoC HDMI codec support

  tegra:
        Host1x driver cleanups
        SOR reworking for DP support
        Runtime PM support

  omapdrm:
        PLL enhancements
        Header refactoring
        Gamma table support

  arcgpu:
        Simulator support

  virtio-gpu:
        Atomic modesetting fixes.

  rcar-du:
        Misc fixes.

  mediatek:
        MT8173 HDMI support

  sti:
        ASOC HDMI codec support
        Minor fixes

  fsl-dcu:
        Suspend/resume support
        Bridge support

  amdkfd:
        Minor fixes.

  etnaviv:
        Enable GPU clock gating

  hisilicon:
        Vblank and other fixes"

* tag 'drm-for-v4.8' of git://people.freedesktop.org/~airlied/linux: (1575 commits)
  drm/nouveau/gr/nv3x: fix instobj write offsets in gr setup
  drm/nouveau/acpi: fix lockup with PCIe runtime PM
  drm/nouveau/acpi: check for function 0x1B before using it
  drm/nouveau/acpi: return supported DSM functions
  drm/nouveau/acpi: ensure matching ACPI handle and supported functions
  drm/nouveau/fbcon: fix font width not divisible by 8
  drm/amd/powerplay: remove enable_clock_power_gatings_tasks from initialize and resume events
  drm/amd/powerplay: move clockgating to after ungating power in pp for uvd/vce
  drm/amdgpu: add query device id and revision id into system info entry at CGS
  drm/amdgpu: add new definition in bif header
  drm/amd/powerplay: rename smum header guards
  drm/amdgpu: enable UVD context buffer for older HW
  drm/amdgpu: fix default UVD context size
  drm/amdgpu: fix incorrect type of info_id
  drm/amdgpu: make amdgpu_cgs_call_acpi_method as static
  drm/amdgpu: comment out unused defaults_staturn_pro static const structure to fix the build
  drm/amdgpu: enable UVD VM only on polaris
  drm/amdgpu: increase timeout of IB test
  drm/amdgpu: add destroy session when generate VCE destroy msg.
  drm/amd: fix deadlock of job_list_lock V2
  ...