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735861 Commits

Author SHA1 Message Date
Linus Torvalds
68c5735eaa media updates for v4.16-rc1
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Merge tag 'media/v4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - videobuf2 was moved to a media/common dir, as it is now used by the
   DVB subsystem too

 - Digital TV core memory mapped support interface

 - new sensor driver: ov7740

 - several improvements at ddbridge driver

 - new V4L2 driver: IPU3 CIO2 CSI-2 receiver unit, found on some Intel
   SoCs

 - new tuner driver: tda18250

 - finally got rid of all LIRC staging drivers

 - as we don't have old lirc drivers anymore, restruct the lirc device
   code

 - add support for UVC metadata

 - add a new staging driver for NVIDIA Tegra Video Decoder Engine

 - DVB kAPI headers moved to include/media

 - synchronize the kAPI and uAPI for the DVB subsystem, removing the gap
   for non-legacy APIs

 - reduce the kAPI gap for V4L2

 - lots of other driver enhancements, cleanups, etc.

* tag 'media/v4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (407 commits)
  media: v4l2-compat-ioctl32.c: make ctrl_is_pointer work for subdevs
  media: v4l2-compat-ioctl32.c: refactor compat ioctl32 logic
  media: v4l2-compat-ioctl32.c: don't copy back the result for certain errors
  media: v4l2-compat-ioctl32.c: drop pr_info for unknown buffer type
  media: v4l2-compat-ioctl32.c: copy clip list in put_v4l2_window32
  media: v4l2-compat-ioctl32.c: fix ctrl_is_pointer
  media: v4l2-compat-ioctl32.c: copy m.userptr in put_v4l2_plane32
  media: v4l2-compat-ioctl32.c: avoid sizeof(type)
  media: v4l2-compat-ioctl32.c: move 'helper' functions to __get/put_v4l2_format32
  media: v4l2-compat-ioctl32.c: fix the indentation
  media: v4l2-compat-ioctl32.c: add missing VIDIOC_PREPARE_BUF
  media: v4l2-ioctl.c: don't copy back the result for -ENOTTY
  media: v4l2-ioctl.c: use check_fmt for enum/g/s/try_fmt
  media: vivid: fix module load error when enabling fb and no_error_inj=1
  media: dvb_demux: improve debug messages
  media: dvb_demux: Better handle discontinuity errors
  media: cxusb, dib0700: ignore XC2028_I2C_FLUSH
  media: ts2020: avoid integer overflows on 32 bit machines
  media: i2c: ov7740: use gpio/consumer.h instead of gpio.h
  media: entity: Add a nop variant of media_entity_cleanup
  ...
2018-02-06 11:27:48 -08:00
Linus Torvalds
2246edfaf8 Second pull request for 4.16 merge window
- Clean up some function signatures in rxe for clarity
 - Tidy the RDMA netlink header to remove unimplemented constants
 - bnxt_re driver fixes, one is a regression this window.
 - Minor hns driver fixes
 - Various fixes from Dan Carpenter and his tool
 - Fix IRQ cleanup race in HFI1
 - HF1 performance optimizations and a fix to report counters in the right units
 - Fix for an IPoIB startup sequence race with the external manager
 - Oops fix for the new kabi path
 - Endian cleanups for hns
 - Fix for mlx5 related to the new automatic affinity support
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull more rdma updates from Doug Ledford:
 "Items of note:

   - two patches fix a regression in the 4.15 kernel. The 4.14 kernel
     worked fine with NVMe over Fabrics and mlx5 adapters. That broke in
     4.15. The fix is here.

   - one of the patches (the endian notation patch from Lijun) looks
     like a lot of lines of change, but it's mostly mechanical in
     nature. It amounts to the biggest chunk of change in it (it's about
     2/3rds of the overall pull request).

  Summary:

   - Clean up some function signatures in rxe for clarity

   - Tidy the RDMA netlink header to remove unimplemented constants

   - bnxt_re driver fixes, one is a regression this window.

   - Minor hns driver fixes

   - Various fixes from Dan Carpenter and his tool

   - Fix IRQ cleanup race in HFI1

   - HF1 performance optimizations and a fix to report counters in the right units

   - Fix for an IPoIB startup sequence race with the external manager

   - Oops fix for the new kabi path

   - Endian cleanups for hns

   - Fix for mlx5 related to the new automatic affinity support"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (38 commits)
  net/mlx5: increase async EQ to avoid EQ overrun
  mlx5: fix mlx5_get_vector_affinity to start from completion vector 0
  RDMA/hns: Fix the endian problem for hns
  IB/uverbs: Use the standard kConfig format for experimental
  IB: Update references to libibverbs
  IB/hfi1: Add 16B rcvhdr trace support
  IB/hfi1: Convert kzalloc_node and kcalloc to use kcalloc_node
  IB/core: Avoid a potential OOPs for an unused optional parameter
  IB/core: Map iWarp AH type to undefined in rdma_ah_find_type
  IB/ipoib: Fix for potential no-carrier state
  IB/hfi1: Show fault stats in both TX and RX directions
  IB/hfi1: Remove blind constants from 16B update
  IB/hfi1: Convert PortXmitWait/PortVLXmitWait counters to flit times
  IB/hfi1: Do not override given pcie_pset value
  IB/hfi1: Optimize process_receive_ib()
  IB/hfi1: Remove unnecessary fecn and becn fields
  IB/hfi1: Look up ibport using a pointer in receive path
  IB/hfi1: Optimize packet type comparison using 9B and bypass code paths
  IB/hfi1: Compute BTH only for RDMA_WRITE_LAST/SEND_LAST packet
  IB/hfi1: Remove dependence on qp->s_hdrwords
  ...
2018-02-06 11:09:45 -08:00
Linus Torvalds
3ff1b28caa libnvdimm for 4.16
* Require struct page by default for filesystem DAX to remove a number of
   surprising failure cases.  This includes failures with direct I/O, gdb and
   fork(2).
 
 * Add support for the new Platform Capabilities Structure added to the NFIT in
   ACPI 6.2a.  This new table tells us whether the platform supports flushing
   of CPU and memory controller caches on unexpected power loss events.
 
 * Revamp vmem_altmap and dev_pagemap handling to clean up code and better
   support future future PCI P2P uses.
 
 * Deprecate the ND_IOCTL_SMART_THRESHOLD command whose payload has become
   out-of-sync with recent versions of the NVDIMM_FAMILY_INTEL spec, and
   instead rely on the generic ND_CMD_CALL approach used by the two other IOCTL
   families, NVDIMM_FAMILY_{HPE,MSFT}.
 
 * Enhance nfit_test so we can test some of the new things added in version 1.6
   of the DSM specification.  This includes testing firmware download and
   simulating the Last Shutdown State (LSS) status.
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Merge tag 'libnvdimm-for-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Ross Zwisler:

 - Require struct page by default for filesystem DAX to remove a number
   of surprising failure cases. This includes failures with direct I/O,
   gdb and fork(2).

 - Add support for the new Platform Capabilities Structure added to the
   NFIT in ACPI 6.2a. This new table tells us whether the platform
   supports flushing of CPU and memory controller caches on unexpected
   power loss events.

 - Revamp vmem_altmap and dev_pagemap handling to clean up code and
   better support future future PCI P2P uses.

 - Deprecate the ND_IOCTL_SMART_THRESHOLD command whose payload has
   become out-of-sync with recent versions of the NVDIMM_FAMILY_INTEL
   spec, and instead rely on the generic ND_CMD_CALL approach used by
   the two other IOCTL families, NVDIMM_FAMILY_{HPE,MSFT}.

 - Enhance nfit_test so we can test some of the new things added in
   version 1.6 of the DSM specification. This includes testing firmware
   download and simulating the Last Shutdown State (LSS) status.

* tag 'libnvdimm-for-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (37 commits)
  libnvdimm, namespace: remove redundant initialization of 'nd_mapping'
  acpi, nfit: fix register dimm error handling
  libnvdimm, namespace: make min namespace size 4K
  tools/testing/nvdimm: force nfit_test to depend on instrumented modules
  libnvdimm/nfit_test: adding support for unit testing enable LSS status
  libnvdimm/nfit_test: add firmware download emulation
  nfit-test: Add platform cap support from ACPI 6.2a to test
  libnvdimm: expose platform persistence attribute for nd_region
  acpi: nfit: add persistent memory control flag for nd_region
  acpi: nfit: Add support for detect platform CPU cache flush on power loss
  device-dax: Fix trailing semicolon
  libnvdimm, btt: fix uninitialized err_lock
  dax: require 'struct page' by default for filesystem dax
  ext2: auto disable dax instead of failing mount
  ext4: auto disable dax instead of failing mount
  mm, dax: introduce pfn_t_special()
  mm: Fix devm_memremap_pages() collision handling
  mm: Fix memory size alignment in devm_memremap_pages_release()
  memremap: merge find_dev_pagemap into get_dev_pagemap
  memremap: change devm_memremap_pages interface to use struct dev_pagemap
  ...
2018-02-06 10:41:33 -08:00
Linus Torvalds
105cf3c8c6 pci-v4.16-changes
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Merge tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

 - skip AER driver error recovery callbacks for correctable errors
   reported via ACPI APEI, as we already do for errors reported via the
   native path (Tyler Baicar)

 - fix DPC shared interrupt handling (Alex Williamson)

 - print full DPC interrupt number (Keith Busch)

 - enable DPC only if AER is available (Keith Busch)

 - simplify DPC code (Bjorn Helgaas)

 - calculate ASPM L1 substate parameter instead of hardcoding it (Bjorn
   Helgaas)

 - enable Latency Tolerance Reporting for ASPM L1 substates (Bjorn
   Helgaas)

 - move ASPM internal interfaces out of public header (Bjorn Helgaas)

 - allow hot-removal of VGA devices (Mika Westerberg)

 - speed up unplug and shutdown by assuming Thunderbolt controllers
   don't support Command Completed events (Lukas Wunner)

 - add AtomicOps support for GPU and Infiniband drivers (Felix Kuehling,
   Jay Cornwall)

 - expose "ari_enabled" in sysfs to help NIC naming (Stuart Hayes)

 - clean up PCI DMA interface usage (Christoph Hellwig)

 - remove PCI pool API (replaced with DMA pool) (Romain Perier)

 - deprecate pci_get_bus_and_slot(), which assumed PCI domain 0 (Sinan
   Kaya)

 - move DT PCI code from drivers/of/ to drivers/pci/ (Rob Herring)

 - add PCI-specific wrappers for dev_info(), etc (Frederick Lawler)

 - remove warnings on sysfs mmap failure (Bjorn Helgaas)

 - quiet ROM validation messages (Alex Deucher)

 - remove redundant memory alloc failure messages (Markus Elfring)

 - fill in types for compile-time VGA and other I/O port resources
   (Bjorn Helgaas)

 - make "pci=pcie_scan_all" work for Root Ports as well as Downstream
   Ports to help AmigaOne X1000 (Bjorn Helgaas)

 - add SPDX tags to all PCI files (Bjorn Helgaas)

 - quirk Marvell 9128 DMA aliases (Alex Williamson)

 - quirk broken INTx disable on Ceton InfiniTV4 (Bjorn Helgaas)

 - fix CONFIG_PCI=n build by adding dummy pci_irqd_intx_xlate() (Niklas
   Cassel)

 - use DMA API to get MSI address for DesignWare IP (Niklas Cassel)

 - fix endpoint-mode DMA mask configuration (Kishon Vijay Abraham I)

 - fix ARTPEC-6 incorrect IS_ERR() usage (Wei Yongjun)

 - add support for ARTPEC-7 SoC (Niklas Cassel)

 - add endpoint-mode support for ARTPEC (Niklas Cassel)

 - add Cadence PCIe host and endpoint controller driver (Cyrille
   Pitchen)

 - handle multiple INTx status bits being set in dra7xx (Vignesh R)

 - translate dra7xx hwirq range to fix INTD handling (Vignesh R)

 - remove deprecated Exynos PHY initialization code (Jaehoon Chung)

 - fix MSI erratum workaround for HiSilicon Hip06/Hip07 (Dongdong Liu)

 - fix NULL pointer dereference in iProc BCMA driver (Ray Jui)

 - fix Keystone interrupt-controller-node lookup (Johan Hovold)

 - constify qcom driver structures (Julia Lawall)

 - rework Tegra config space mapping to increase space available for
   endpoints (Vidya Sagar)

 - simplify Tegra driver by using bus->sysdata (Manikanta Maddireddy)

 - remove PCI_REASSIGN_ALL_BUS usage on Tegra (Manikanta Maddireddy)

 - add support for Global Fabric Manager Server (GFMS) event to
   Microsemi Switchtec switch driver (Logan Gunthorpe)

 - add IDs for Switchtec PSX 24xG3 and PSX 48xG3 (Kelvin Cao)

* tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (140 commits)
  PCI: cadence: Add EndPoint Controller driver for Cadence PCIe controller
  dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe endpoint controller
  PCI: endpoint: Fix EPF device name to support multi-function devices
  PCI: endpoint: Add the function number as argument to EPC ops
  PCI: cadence: Add host driver for Cadence PCIe controller
  dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe host controller
  PCI: Add vendor ID for Cadence
  PCI: Add generic function to probe PCI host controllers
  PCI: generic: fix missing call of pci_free_resource_list()
  PCI: OF: Add generic function to parse and allocate PCI resources
  PCI: Regroup all PCI related entries into drivers/pci/Makefile
  PCI/DPC: Reformat DPC register definitions
  PCI/DPC: Add and use DPC Status register field definitions
  PCI/DPC: Squash dpc_rp_pio_get_info() into dpc_process_rp_pio_error()
  PCI/DPC: Remove unnecessary RP PIO register structs
  PCI/DPC: Push dpc->rp_pio_status assignment into dpc_rp_pio_get_info()
  PCI/DPC: Squash dpc_rp_pio_print_error() into dpc_rp_pio_get_info()
  PCI/DPC: Make RP PIO log size check more generic
  PCI/DPC: Rename local "status" to "dpc_status"
  PCI/DPC: Squash dpc_rp_pio_print_tlp_header() into dpc_rp_pio_print_error()
  ...
2018-02-06 09:59:40 -08:00
Linus Torvalds
e237f98a9c Changes since last update:
- Print scrub build status in the xfs build info.
  - Explicitly call out the remaining two scenarios where we don't
    support
    reflink and never have.
  - Remove EXPERIMENTAL tag from reverse mapping btree!
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Merge tag 'xfs-4.16-merge-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull more xfs updates from Darrick Wong:
 "As promised, here's a (much smaller) second pull request for the
  second week of the merge cycle. This time around we have a couple
  patches shutting off unsupported fs configurations, and a couple of
  cleanups.

  Last, we turn off EXPERIMENTAL for the reverse mapping btree, since
  the primary downstream user of that information (online fsck) is now
  upstream and I haven't seen any major failures in a few kernel
  releases.

  Summary:

   - Print scrub build status in the xfs build info.

   - Explicitly call out the remaining two scenarios where we don't
     support reflink and never have.

   - Remove EXPERIMENTAL tag from reverse mapping btree!"

* tag 'xfs-4.16-merge-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: remove experimental tag for reverse mapping
  xfs: don't allow reflink + realtime filesystems
  xfs: don't allow DAX on reflink filesystems
  xfs: add scrub to XFS_BUILD_OPTIONS
  xfs: fix u32 type usage in sb validation function
2018-02-05 13:35:56 -08:00
Linus Torvalds
139351f1f9 Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
Pull overlayfs updates from Miklos Szeredi:
 "This work from Amir adds NFS export capability to overlayfs. NFS
  exporting an overlay filesystem is a challange because we want to keep
  track of any copy-up of a file or directory between encoding the file
  handle and decoding it.

  This is achieved by indexing copied up objects by lower layer file
  handle. The index is already used for hard links, this patchset
  extends the use to NFS file handle decoding"

* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: (51 commits)
  ovl: check ERR_PTR() return value from ovl_encode_fh()
  ovl: fix regression in fsnotify of overlay merge dir
  ovl: wire up NFS export operations
  ovl: lookup indexed ancestor of lower dir
  ovl: lookup connected ancestor of dir in inode cache
  ovl: hash non-indexed dir by upper inode for NFS export
  ovl: decode pure lower dir file handles
  ovl: decode indexed dir file handles
  ovl: decode lower file handles of unlinked but open files
  ovl: decode indexed non-dir file handles
  ovl: decode lower non-dir file handles
  ovl: encode lower file handles
  ovl: copy up before encoding non-connectable dir file handle
  ovl: encode non-indexed upper file handles
  ovl: decode connected upper dir file handles
  ovl: decode pure upper file handles
  ovl: encode pure upper file handles
  ovl: document NFS export
  vfs: factor out helpers d_instantiate_anon() and d_alloc_anon()
  ovl: store 'has_upper' and 'opaque' as bit flags
  ...
2018-02-05 13:05:20 -08:00
Linus Torvalds
2deb41b245 remoteproc updates for v4.16
This contains a few bug fixes and a cleanup up of the resource-table handling
 in the framework, which removes the need for drivers with no resource table to
 provide a fake one.
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Merge tag 'rproc-v4.16' of git://github.com/andersson/remoteproc

Pull remoteproc updates from Bjorn Andersson:
 "This contains a few bug fixes and a cleanup up of the resource-table
  handling in the framework, which removes the need for drivers with no
  resource table to provide a fake one"

* tag 'rproc-v4.16' of git://github.com/andersson/remoteproc:
  remoteproc: Reset table_ptr on stop
  remoteproc: Drop dangling find_rsc_table dummies
  remoteproc: Move resource table load logic to find
  remoteproc: Don't handle empty resource table
  remoteproc: Merge rproc_ops and rproc_fw_ops
  remoteproc: Clone rproc_ops in rproc_alloc()
  remoteproc: Cache resource table size
  remoteproc: Remove depricated crash completion
  virtio_remoteproc: correct put_device virtio_device.dev
2018-02-05 10:07:40 -08:00
Linus Torvalds
67fb3b92b0 rpmsg updates for v4.16
This fixes a few issues found in the SMD and GLINK drivers and corrects the
 handling of SMD channels that are found in an (previously) unexpected state.
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Merge tag 'rpmsg-v4.16' of git://github.com/andersson/remoteproc

Pull rpmsg updates from Bjorn Andersson:
 "This fixes a few issues found in the SMD and GLINK drivers and
  corrects the handling of SMD channels that are found in an
  (previously) unexpected state"

* tag 'rpmsg-v4.16' of git://github.com/andersson/remoteproc:
  rpmsg: smd: Fix double unlock in __qcom_smd_send()
  rpmsg: glink: Fix missing mutex_init() in qcom_glink_alloc_channel()
  rpmsg: smd: Don't hold the tx lock during wait
  rpmsg: smd: Fail send on a closed channel
  rpmsg: smd: Wake up all waiters
  rpmsg: smd: Create device for all channels
  rpmsg: smd: Perform handshake during open
  rpmsg: glink: smem: Ensure ordering during tx
  drivers: rpmsg: remove duplicate includes
  remoteproc: qcom: Use PTR_ERR_OR_ZERO() in glink prob
2018-02-05 10:05:40 -08:00
Linus Torvalds
ae77c9583f MMC host:
- renesas_sdhi: Fix build error in case NO_DMA=y
  - sdhci: Implement a bounce buffer to address throughput regressions
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Merge tag 'mmc-v4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC host fixes from Ulf Hansson:

 - renesas_sdhi: Fix build error in case NO_DMA=y

 - sdhci: Implement a bounce buffer to address throughput regressions

* tag 'mmc-v4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: MMC_SDHI_{SYS,INTERNAL}_DMAC should depend on HAS_DMA
  mmc: sdhci: Implement an SDHCI-specific bounce buffer
2018-02-05 09:51:15 -08:00
Linus Torvalds
20f9aa2213 pwm: Changes for v4.16-rc1
The Meson PWM controller driver gains support for the AXG series and a
 minor bug is fixed for the STMPE driver.
 
 To round things off, the class is now set for PWM channels exported via
 sysfs which allows non-root access, provided that the system has been
 configured accordingly.
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Merge tag 'pwm/for-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm updates from Thierry Reding:
 "The Meson PWM controller driver gains support for the AXG series and a
  minor bug is fixed for the STMPE driver.

  To round things off, the class is now set for PWM channels exported
  via sysfs which allows non-root access, provided that the system has
  been configured accordingly"

* tag 'pwm/for-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
  pwm: meson: Add clock source configuration for Meson-AXG
  dt-bindings: pwm: Update bindings for the Meson-AXG
  pwm: stmpe: Fix wrong register offset for hwpwm=2 case
  pwm: Set class for exported channels in sysfs
2018-02-05 09:44:52 -08:00
Thierry Reding
140995c976 net: mediatek: Explicitly include pinctrl headers
The Mediatek ethernet driver fails to build after commit 23c35f48f5
("pinctrl: remove include file from <linux/device.h>") because it relies
on the pinctrl/consumer.h and pinctrl/devinfo.h being pulled in by the
device.h header implicitly.

Include these headers explicitly to avoid the build failure.

Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-02-05 09:41:54 -08:00
Thierry Reding
8fb572acb2 mmc: meson-gx-mmc: Explicitly include pinctr/consumer.h
The Meson GX MMC driver fails to build after commit 23c35f48f5
("pinctrl: remove include file from <linux/device.h>") because it relies
on the pinctrl/consumer.h being pulled in by the device.h header
implicitly.

Include the header explicitly to avoid the build failure.

Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-02-05 09:41:54 -08:00
Thierry Reding
1c16a9ce01 drm/rockchip: lvds: Explicitly include pinctrl headers
The Rockchip LVDS driver fails to build after commit 23c35f48f5
("pinctrl: remove include file from <linux/device.h>") because it relies
on the pinctrl/consumer.h and pinctrl/devinfo.h being pulled in by the
device.h header implicitly.

Include these headers explicitly to avoid the build failure.

Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-02-05 09:41:54 -08:00
Stephen Rothwell
567af7fc9d pinctrl: files should directly include apis they use
Fixes: 23c35f48f5 ("pinctrl: remove include file from <linux/device.h>")
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-02-05 09:41:54 -08:00
Max Gurtovoy
03ecdd2dcf net/mlx5: increase async EQ to avoid EQ overrun
Currently the async EQ has 256 entries only. It might not be big enough
for the SW to handle all the needed pending events. For example, in case
of many QPs (let's say 1024) connected to a SRQ created using NVMeOF target
and the target goes down, the FW will raise 1024 "last WQE reached" events
and may cause EQ overrun. Increase the EQ to more reasonable size, that beyond
it the FW should be able to delay the event and raise it later on using internal
backpressure mechanism.

Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-02-05 10:58:25 -05:00
Sagi Grimberg
2572cf57d7 mlx5: fix mlx5_get_vector_affinity to start from completion vector 0
The consumers of this routine expects the affinity map of of vector
index relative to the first completion vector. The upper layers are
not aware of internal/private completion vectors that mlx5 allocates
for its own usage.

Hence, return the affinity map of vector index relative to the first
completion vector.

Fixes: 05e0cc84e0 ("net/mlx5: Fix get vector affinity helper function")
Reported-by: Logan Gunthorpe <logang@deltatee.com>
Tested-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Cc: <stable@vger.kernel.org> # v4.15
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-02-05 10:49:42 -05:00
oulijun
8b9b8d143b RDMA/hns: Fix the endian problem for hns
The hip06 and hip08 run on a little endian ARM, it needs to
revise the annotations to indicate that the HW uses little
endian data in the various DMA buffers, and flow the necessary
swaps throughout.

The imm_data use big endian mode. The cpu_to_le32/le32_to_cpu
swaps are no-op for this, which makes the only substantive
change the handling of imm_data which is now mandatory swapped.

This also keep match with the userspace hns driver and resolve
the warning by sparse.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-02-05 10:48:48 -05:00
Amir Goldstein
9b6faee074 ovl: check ERR_PTR() return value from ovl_encode_fh()
Another fix for an issue reported by 0-day robot.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: 8ed5eec9d6 ("ovl: encode pure upper file handles")
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2018-02-05 09:50:29 +01:00
Amir Goldstein
2aed489d16 ovl: fix regression in fsnotify of overlay merge dir
A re-factoring patch in NFS export series has passed the wrong argument
to ovl_get_inode() causing a regression in the very recent fix to
fsnotify of overlay merge dir.

The regression has caused merge directory inodes to be hashed by upper
instead of lower real inode, when NFS export and directory indexing is
disabled. That caused an inotify watch to become obsolete after directory
copy up and drop caches.

LTP test inotify07 was improved to catch this regression.
The regression also caused multiple redirect dirs to same origin not to
be detected on lookup with NFS export disabled. An xfstest was added to
cover this case.

Fixes: 0aceb53e73 ("ovl: do not pass overlay dentry to ovl_get_inode()")
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2018-02-05 09:50:29 +01:00
Linus Torvalds
35277995e1 Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull spectre/meltdown updates from Thomas Gleixner:
 "The next round of updates related to melted spectrum:

   - The initial set of spectre V1 mitigations:

       - Array index speculation blocker and its usage for syscall,
         fdtable and the n180211 driver.

       - Speculation barrier and its usage in user access functions

   - Make indirect calls in KVM speculation safe

   - Blacklisting of known to be broken microcodes so IPBP/IBSR are not
     touched.

   - The initial IBPB support and its usage in context switch

   - The exposure of the new speculation MSRs to KVM guests.

   - A fix for a regression in x86/32 related to the cpu entry area

   - Proper whitelisting for known to be safe CPUs from the mitigations.

   - objtool fixes to deal proper with retpolines and alternatives

   - Exclude __init functions from retpolines which speeds up the boot
     process.

   - Removal of the syscall64 fast path and related cleanups and
     simplifications

   - Removal of the unpatched paravirt mode which is yet another source
     of indirect unproteced calls.

   - A new and undisputed version of the module mismatch warning

   - A couple of cleanup and correctness fixes all over the place

  Yet another step towards full mitigation. There are a few things still
  missing like the RBS underflow mitigation for Skylake and other small
  details, but that's being worked on.

  That said, I'm taking a belated christmas vacation for a week and hope
  that everything is magically solved when I'm back on Feb 12th"

* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (37 commits)
  KVM/SVM: Allow direct access to MSR_IA32_SPEC_CTRL
  KVM/VMX: Allow direct access to MSR_IA32_SPEC_CTRL
  KVM/VMX: Emulate MSR_IA32_ARCH_CAPABILITIES
  KVM/x86: Add IBPB support
  KVM/x86: Update the reverse_cpuid list to include CPUID_7_EDX
  x86/speculation: Fix typo IBRS_ATT, which should be IBRS_ALL
  x86/pti: Mark constant arrays as __initconst
  x86/spectre: Simplify spectre_v2 command line parsing
  x86/retpoline: Avoid retpolines for built-in __init functions
  x86/kvm: Update spectre-v1 mitigation
  KVM: VMX: make MSR bitmaps per-VCPU
  x86/paravirt: Remove 'noreplace-paravirt' cmdline option
  x86/speculation: Use Indirect Branch Prediction Barrier in context switch
  x86/cpuid: Fix up "virtual" IBRS/IBPB/STIBP feature bits on Intel
  x86/spectre: Fix spelling mistake: "vunerable"-> "vulnerable"
  x86/spectre: Report get_user mitigation for spectre_v1
  nl80211: Sanitize array index in parse_txq_params
  vfs, fdtable: Prevent bounds-check bypass via speculative execution
  x86/syscall: Sanitize syscall table de-references under speculation
  x86/get_user: Use pointer masking to limit speculation
  ...
2018-02-04 11:45:55 -08:00
Linus Torvalds
0a646e9c99 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
 "A small set of changes:

   - a fixup for kexec related to 5-level paging mode. That covers most
     of the cases except kexec from a 5-level kernel to a 4-level
     kernel. The latter needs more work and is going to come in 4.17

   - two trivial fixes for build warnings triggered by LTO and gcc-8"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/power: Fix swsusp_arch_resume prototype
  x86/dumpstack: Avoid uninitlized variable
  x86/kexec: Make kexec (mostly) work in 5-level paging mode
2018-02-04 11:43:30 -08:00
Linus Torvalds
f74a127f66 Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
 "Two small changes:

   - a fix for a interrupt regression caused by the vector management
     changes in 4.15 affecting museum pieces which rely on interrupt
     probing for legacy (e.g. parallel port) devices.

     One of the startup calls in the autoprobe code was not changed to
     the new activate_and_startup() function resulting in a warning and
     as a consequence failing to discover the device interrupt.

   - a trivial update to the copyright/license header of the STM32 irq
     chip driver"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq: Make legacy autoprobing work again
  irqchip/stm32: Fix copyright
2018-02-04 11:41:31 -08:00
Linus Torvalds
64b28683de for-linus-20180204
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Merge tag 'for-linus-20180204' of git://git.kernel.dk/linux-block

Pull more block updates from Jens Axboe:
 "Most of this is fixes and not new code/features:

   - skd fix from Arnd, fixing a build error dependent on sla allocator
     type.

   - blk-mq scheduler discard merging fixes, one from me and one from
     Keith. This fixes a segment miscalculation for blk-mq-sched, where
     we mistakenly think two segments are physically contigious even
     though the request isn't carrying real data. Also fixes a bio-to-rq
     merge case.

   - Don't re-set a bit on the buffer_head flags, if it's already set.
     This can cause scalability concerns on bigger machines and
     workloads. From Kemi Wang.

   - Add BLK_STS_DEV_RESOURCE return value to blk-mq, allowing us to
     distuingish between a local (device related) resource starvation
     and a global one. The latter might happen without IO being in
     flight, so it has to be handled a bit differently. From Ming"

* tag 'for-linus-20180204' of git://git.kernel.dk/linux-block:
  block: skd: fix incorrect linux/slab_def.h inclusion
  buffer: Avoid setting buffer bits that are already set
  blk-mq-sched: Enable merging discard bio into request
  blk-mq: fix discard merge with scheduler attached
  blk-mq: introduce BLK_STS_DEV_RESOURCE
2018-02-04 11:16:35 -08:00
Linus Torvalds
d3658c2266 Bug fixes galore, removal of the ntb atom driver, and updates to the ntb
tools and tests to support the multi-port interface
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Merge tag 'ntb-4.16' of git://github.com/jonmason/ntb

Pull NTB updates from Jon Mason:
 "Bug fixes galore, removal of the ntb atom driver, and updates to the
  ntb tools and tests to support the multi-port interface"

* tag 'ntb-4.16' of git://github.com/jonmason/ntb: (37 commits)
  NTB: ntb_perf: fix cast to restricted __le32
  ntb_perf: Fix an error code in perf_copy_chunk()
  ntb_hw_switchtec: Make function switchtec_ntb_remove() static
  NTB: ntb_tool: fix memory leak on 'buf' on error exit path
  NTB: ntb_perf: fix printing of resource_size_t
  NTB: ntb_hw_idt: Set NTB_TOPO_SWITCH topology
  NTB: ntb_test: Update ntb_perf tests
  NTB: ntb_test: Update ntb_tool MW tests
  NTB: ntb_test: Add ntb_tool Message tests
  NTB: ntb_test: Update ntb_tool Scratchpad tests
  NTB: ntb_test: Update ntb_tool DB tests
  NTB: ntb_test: Update ntb_tool link tests
  NTB: ntb_test: Add ntb_tool port tests
  NTB: ntb_test: Safely use paths with whitespace
  NTB: ntb_perf: Add full multi-port NTB API support
  NTB: ntb_tool: Add full multi-port NTB API support
  NTB: ntb_pp: Add full multi-port NTB API support
  NTB: Fix UB/bug in ntb_mw_get_align()
  NTB: Set dma mask and dma coherent mask to NTB devices
  NTB: Rename NTB messaging API methods
  ...
2018-02-04 11:13:49 -08:00
Linus Torvalds
8ac4840a3c Misc driver changes only :
- TI-MsgMgr: Fix print format for a printk
 - TI-MSgMgr: SPDX license switch for the driver
 - QCOM-IPC: Convert driver to use regmap
 - QCOM-IPC: Spawn sibling clock device from mailbox driver
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Merge tag 'mailbox-v4.16' of git://git.linaro.org/landing-teams/working/fujitsu/integration

Pull mailbox updates from Jassi Brar:
 "Misc driver changes only:

   - TI-MsgMgr: Fix print format for a printk

   - TI-MSgMgr: SPDX license switch for the driver

   - QCOM-IPC: Convert driver to use regmap

   - QCOM-IPC: Spawn sibling clock device from mailbox driver"

* tag 'mailbox-v4.16' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
  dt-bindings: mailbox: qcom: Document the APCS clock binding
  mailbox: qcom: Create APCS child device for clock controller
  mailbox: qcom: Convert APCS IPC driver to use regmap
  mailbox: ti-msgmgr: Use %zu for size_t print format
  mailbox: ti-msgmgr: Switch to SPDX Licensing
2018-02-04 11:11:23 -08:00
Linus Torvalds
4141cf676b Merge branch 'i2c/for-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:
 "I2C has the following changes for you:

   - new flag to mark DMA safe buffers in i2c_msg. Also, some
     infrastructure around it. And docs.

   - huge refactoring of the at24 driver led by the new maintainer
     Bartosz

   - update I2C bus recovery to send STOP after recovery

   - conversion from gpio to gpiod for I2C bus recovery

   - adding a fault-injector to the i2c-gpio driver

   - lots of small driver improvements, and bigger ones to
     i2c-sh_mobile"

* 'i2c/for-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (99 commits)
  i2c: mv64xxx: Add myself as maintainer for this driver
  i2c: mv64xxx: Fix clock resource by adding an optional bus clock
  i2c: mv64xxx: Remove useless test before clk_disable_unprepare
  i2c: mxs: use true and false for boolean values
  i2c: meson: update doc description to fix build warnings
  i2c: meson: add configurable divider factors
  dt-bindings: i2c: update documentation for the Meson-AXG
  i2c: imx-lpi2c: add runtime pm support
  i2c: rcar: fix some trivial typos in comments
  i2c: davinci: fix the cpufreq transition
  i2c: rk3x: add proper kerneldoc header
  i2c: rk3x: account for const type of of_device_id.data
  i2c: acorn: remove outdated path from file header
  i2c: acorn: add MODULE_LICENSE tag
  i2c: rcar: implement bus recovery
  i2c: send STOP after successful bus recovery
  i2c: ensure SDA is released in recovery if SDA is controllable
  i2c: add 'set_sda' to bus_recovery_info
  i2c: add identifier in declarations for i2c_bus_recovery
  i2c: make kerneldoc about bus recovery more precise
  ...
2018-02-04 10:57:43 -08:00
Linus Torvalds
3462ac5703 Refactor support for encrypted symlinks to move common code to fscrypt.
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Merge tag 'fscrypt_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/fscrypt

Pull fscrypt updates from Ted Ts'o:
 "Refactor support for encrypted symlinks to move common code to fscrypt"

Ted also points out about the merge:
 "This makes the f2fs symlink code use the fscrypt_encrypt_symlink()
  from the fscrypt tree. This will end up dropping the kzalloc() ->
  f2fs_kzalloc() change, which means the fscrypt-specific allocation
  won't get tested by f2fs's kmalloc error injection system; which is
  fine"

* tag 'fscrypt_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/fscrypt: (26 commits)
  fscrypt: fix build with pre-4.6 gcc versions
  fscrypt: remove 'ci' parameter from fscrypt_put_encryption_info()
  fscrypt: document symlink length restriction
  fscrypt: fix up fscrypt_fname_encrypted_size() for internal use
  fscrypt: define fscrypt_fname_alloc_buffer() to be for presented names
  fscrypt: calculate NUL-padding length in one place only
  fscrypt: move fscrypt_symlink_data to fscrypt_private.h
  fscrypt: remove fscrypt_fname_usr_to_disk()
  ubifs: switch to fscrypt_get_symlink()
  ubifs: switch to fscrypt ->symlink() helper functions
  ubifs: free the encrypted symlink target
  f2fs: switch to fscrypt_get_symlink()
  f2fs: switch to fscrypt ->symlink() helper functions
  ext4: switch to fscrypt_get_symlink()
  ext4: switch to fscrypt ->symlink() helper functions
  fscrypt: new helper function - fscrypt_get_symlink()
  fscrypt: new helper functions for ->symlink()
  fscrypt: trim down fscrypt.h includes
  fscrypt: move fscrypt_is_dot_dotdot() to fs/crypto/fname.c
  fscrypt: move fscrypt_valid_enc_modes() to fscrypt_private.h
  ...
2018-02-04 10:43:12 -08:00
Jason Gunthorpe
e9d1e38927 IB/uverbs: Use the standard kConfig format for experimental
We really don't want people turning this on just yet, make it very
clear with capital letters.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-02-04 11:56:53 -05:00
Jason Gunthorpe
46adb17982 IB: Update references to libibverbs
These days the userspace comes from rdma-core, revise references
in the kernel to point to the current repository.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-02-04 11:56:49 -05:00
Georgi Djakov
0ae7d327a6 dt-bindings: mailbox: qcom: Document the APCS clock binding
Update the binding documentation for APCS to mention that the APCS
hardware block also expose a clock controller functionality.

The APCS clock controller is a mux and half-integer divider. It has the
main CPU PLL as an input and provides the clock for the application CPU.

Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2018-02-04 12:16:34 +05:30
Georgi Djakov
c815d769b5 mailbox: qcom: Create APCS child device for clock controller
There is a clock controller functionality provided by the APCS hardware
block of msm8916 devices. The device-tree would represent an APCS node
with both mailbox and clock provider properties.
Create a platform child device for the clock controller functionality so
the driver can probe and use APCS as parent.

Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2018-02-04 12:16:23 +05:30
Georgi Djakov
c6a8b171ca mailbox: qcom: Convert APCS IPC driver to use regmap
This hardware block provides more functionalities that just IPC. Convert
it to regmap to allow other child platform devices to use the same regmap.

Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2018-02-04 12:16:09 +05:30
Linus Torvalds
617aebe6a9 Currently, hardened usercopy performs dynamic bounds checking on slab
cache objects. This is good, but still leaves a lot of kernel memory
 available to be copied to/from userspace in the face of bugs. To further
 restrict what memory is available for copying, this creates a way to
 whitelist specific areas of a given slab cache object for copying to/from
 userspace, allowing much finer granularity of access control. Slab caches
 that are never exposed to userspace can declare no whitelist for their
 objects, thereby keeping them unavailable to userspace via dynamic copy
 operations. (Note, an implicit form of whitelisting is the use of constant
 sizes in usercopy operations and get_user()/put_user(); these bypass all
 hardened usercopy checks since these sizes cannot change at runtime.)
 
 This new check is WARN-by-default, so any mistakes can be found over the
 next several releases without breaking anyone's system.
 
 The series has roughly the following sections:
 - remove %p and improve reporting with offset
 - prepare infrastructure and whitelist kmalloc
 - update VFS subsystem with whitelists
 - update SCSI subsystem with whitelists
 - update network subsystem with whitelists
 - update process memory with whitelists
 - update per-architecture thread_struct with whitelists
 - update KVM with whitelists and fix ioctl bug
 - mark all other allocations as not whitelisted
 - update lkdtm for more sensible test overage
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Merge tag 'usercopy-v4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardened usercopy whitelisting from Kees Cook:
 "Currently, hardened usercopy performs dynamic bounds checking on slab
  cache objects. This is good, but still leaves a lot of kernel memory
  available to be copied to/from userspace in the face of bugs.

  To further restrict what memory is available for copying, this creates
  a way to whitelist specific areas of a given slab cache object for
  copying to/from userspace, allowing much finer granularity of access
  control.

  Slab caches that are never exposed to userspace can declare no
  whitelist for their objects, thereby keeping them unavailable to
  userspace via dynamic copy operations. (Note, an implicit form of
  whitelisting is the use of constant sizes in usercopy operations and
  get_user()/put_user(); these bypass all hardened usercopy checks since
  these sizes cannot change at runtime.)

  This new check is WARN-by-default, so any mistakes can be found over
  the next several releases without breaking anyone's system.

  The series has roughly the following sections:
   - remove %p and improve reporting with offset
   - prepare infrastructure and whitelist kmalloc
   - update VFS subsystem with whitelists
   - update SCSI subsystem with whitelists
   - update network subsystem with whitelists
   - update process memory with whitelists
   - update per-architecture thread_struct with whitelists
   - update KVM with whitelists and fix ioctl bug
   - mark all other allocations as not whitelisted
   - update lkdtm for more sensible test overage"

* tag 'usercopy-v4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (38 commits)
  lkdtm: Update usercopy tests for whitelisting
  usercopy: Restrict non-usercopy caches to size 0
  kvm: x86: fix KVM_XEN_HVM_CONFIG ioctl
  kvm: whitelist struct kvm_vcpu_arch
  arm: Implement thread_struct whitelist for hardened usercopy
  arm64: Implement thread_struct whitelist for hardened usercopy
  x86: Implement thread_struct whitelist for hardened usercopy
  fork: Provide usercopy whitelisting for task_struct
  fork: Define usercopy region in thread_stack slab caches
  fork: Define usercopy region in mm_struct slab caches
  net: Restrict unwhitelisted proto caches to size 0
  sctp: Copy struct sctp_sock.autoclose to userspace using put_user()
  sctp: Define usercopy region in SCTP proto slab cache
  caif: Define usercopy region in caif proto slab cache
  ip: Define usercopy region in IP proto slab cache
  net: Define usercopy region in struct proto slab cache
  scsi: Define usercopy region in scsi_sense_cache slab cache
  cifs: Define usercopy region in cifs_request slab cache
  vxfs: Define usercopy region in vxfs_inode slab cache
  ufs: Define usercopy region in ufs_inode_cache slab cache
  ...
2018-02-03 16:25:42 -08:00
KarimAllah Ahmed
b2ac58f905 KVM/SVM: Allow direct access to MSR_IA32_SPEC_CTRL
[ Based on a patch from Paolo Bonzini <pbonzini@redhat.com> ]

... basically doing exactly what we do for VMX:

- Passthrough SPEC_CTRL to guests (if enabled in guest CPUID)
- Save and restore SPEC_CTRL around VMExit and VMEntry only if the guest
  actually used it.

Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jun Nakajima <jun.nakajima@intel.com>
Cc: kvm@vger.kernel.org
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Arjan Van De Ven <arjan.van.de.ven@intel.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ashok Raj <ashok.raj@intel.com>
Link: https://lkml.kernel.org/r/1517669783-20732-1-git-send-email-karahmed@amazon.de
2018-02-03 23:06:52 +01:00
KarimAllah Ahmed
d28b387fb7 KVM/VMX: Allow direct access to MSR_IA32_SPEC_CTRL
[ Based on a patch from Ashok Raj <ashok.raj@intel.com> ]

Add direct access to MSR_IA32_SPEC_CTRL for guests. This is needed for
guests that will only mitigate Spectre V2 through IBRS+IBPB and will not
be using a retpoline+IBPB based approach.

To avoid the overhead of saving and restoring the MSR_IA32_SPEC_CTRL for
guests that do not actually use the MSR, only start saving and restoring
when a non-zero is written to it.

No attempt is made to handle STIBP here, intentionally. Filtering STIBP
may be added in a future patch, which may require trapping all writes
if we don't want to pass it through directly to the guest.

[dwmw2: Clean up CPUID bits, save/restore manually, handle reset]

Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jun Nakajima <jun.nakajima@intel.com>
Cc: kvm@vger.kernel.org
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Arjan Van De Ven <arjan.van.de.ven@intel.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ashok Raj <ashok.raj@intel.com>
Link: https://lkml.kernel.org/r/1517522386-18410-5-git-send-email-karahmed@amazon.de
2018-02-03 23:06:52 +01:00
KarimAllah Ahmed
28c1c9fabf KVM/VMX: Emulate MSR_IA32_ARCH_CAPABILITIES
Intel processors use MSR_IA32_ARCH_CAPABILITIES MSR to indicate RDCL_NO
(bit 0) and IBRS_ALL (bit 1). This is a read-only MSR. By default the
contents will come directly from the hardware, but user-space can still
override it.

[dwmw2: The bit in kvm_cpuid_7_0_edx_x86_features can be unconditional]

Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jun Nakajima <jun.nakajima@intel.com>
Cc: kvm@vger.kernel.org
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Arjan Van De Ven <arjan.van.de.ven@intel.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Link: https://lkml.kernel.org/r/1517522386-18410-4-git-send-email-karahmed@amazon.de
2018-02-03 23:06:52 +01:00
Ashok Raj
15d4507152 KVM/x86: Add IBPB support
The Indirect Branch Predictor Barrier (IBPB) is an indirect branch
control mechanism. It keeps earlier branches from influencing
later ones.

Unlike IBRS and STIBP, IBPB does not define a new mode of operation.
It's a command that ensures predicted branch targets aren't used after
the barrier. Although IBRS and IBPB are enumerated by the same CPUID
enumeration, IBPB is very different.

IBPB helps mitigate against three potential attacks:

* Mitigate guests from being attacked by other guests.
  - This is addressed by issing IBPB when we do a guest switch.

* Mitigate attacks from guest/ring3->host/ring3.
  These would require a IBPB during context switch in host, or after
  VMEXIT. The host process has two ways to mitigate
  - Either it can be compiled with retpoline
  - If its going through context switch, and has set !dumpable then
    there is a IBPB in that path.
    (Tim's patch: https://patchwork.kernel.org/patch/10192871)
  - The case where after a VMEXIT you return back to Qemu might make
    Qemu attackable from guest when Qemu isn't compiled with retpoline.
  There are issues reported when doing IBPB on every VMEXIT that resulted
  in some tsc calibration woes in guest.

* Mitigate guest/ring0->host/ring0 attacks.
  When host kernel is using retpoline it is safe against these attacks.
  If host kernel isn't using retpoline we might need to do a IBPB flush on
  every VMEXIT.

Even when using retpoline for indirect calls, in certain conditions 'ret'
can use the BTB on Skylake-era CPUs. There are other mitigations
available like RSB stuffing/clearing.

* IBPB is issued only for SVM during svm_free_vcpu().
  VMX has a vmclear and SVM doesn't.  Follow discussion here:
  https://lkml.org/lkml/2018/1/15/146

Please refer to the following spec for more details on the enumeration
and control.

Refer here to get documentation about mitigations.

https://software.intel.com/en-us/side-channel-security-support

[peterz: rebase and changelog rewrite]
[karahmed: - rebase
           - vmx: expose PRED_CMD if guest has it in CPUID
           - svm: only pass through IBPB if guest has it in CPUID
           - vmx: support !cpu_has_vmx_msr_bitmap()]
           - vmx: support nested]
[dwmw2: Expose CPUID bit too (AMD IBPB only for now as we lack IBRS)
        PRED_CMD is a write-only MSR]

Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: kvm@vger.kernel.org
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Arjan Van De Ven <arjan.van.de.ven@intel.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Jun Nakajima <jun.nakajima@intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Link: http://lkml.kernel.org/r/1515720739-43819-6-git-send-email-ashok.raj@intel.com
Link: https://lkml.kernel.org/r/1517522386-18410-3-git-send-email-karahmed@amazon.de
2018-02-03 23:06:51 +01:00
KarimAllah Ahmed
b7b27aa011 KVM/x86: Update the reverse_cpuid list to include CPUID_7_EDX
[dwmw2: Stop using KF() for bits in it, too]
Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Cc: kvm@vger.kernel.org
Cc: Radim Krčmář <rkrcmar@redhat.com>
Link: https://lkml.kernel.org/r/1517522386-18410-2-git-send-email-karahmed@amazon.de
2018-02-03 23:06:51 +01:00
Linus Torvalds
0771ad44a2 - clean up hardirq header usage (Yang Shi)
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Merge tag 'pstore-v4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull pstore update from Kees Cook:
 "Only a header cleanup this release; nice and quiet. :)

   - clean up hardirq header usage (Yang Shi)"

* tag 'pstore-v4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  fs: pstore: remove unused hardirq.h
2018-02-03 13:55:01 -08:00
Linus Torvalds
23aedc4b9b Only miscellaneous cleanups and bug fixes for ext4 this cycle.
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Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 updates from Ted Ts'o:
 "Only miscellaneous cleanups and bug fixes for ext4 this cycle"

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: create ext4_kset dynamically
  ext4: create ext4_feat kobject dynamically
  ext4: release kobject/kset even when init/register fail
  ext4: fix incorrect indentation of if statement
  ext4: correct documentation for grpid mount option
  ext4: use 'sbi' instead of 'EXT4_SB(sb)'
  ext4: save error to disk in __ext4_grp_locked_error()
  jbd2: fix sphinx kernel-doc build warnings
  ext4: fix a race in the ext4 shutdown path
  mbcache: make sure c_entry_count is not decremented past zero
  ext4: no need flush workqueue before destroying it
  ext4: fixed alignment and minor code cleanup in ext4.h
  ext4: fix ENOSPC handling in DAX page fault handler
  dax: pass detailed error code from dax_iomap_fault()
  mbcache: revert "fs/mbcache.c: make count_objects() more robust"
  mbcache: initialize entry->e_referenced in mb_cache_entry_create()
  ext4: fix up remaining files with SPDX cleanups
2018-02-03 13:49:22 -08:00
Linus Torvalds
85b8bac957 Merge branch 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
Pull dmi subsystem updates/fixes from Jean Delvare.

* 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  firmware: dmi: handle missing DMI data gracefully
  firmware: dmi_scan: Fix handling of empty DMI strings
  firmware: dmi_scan: Drop dmi_initialized
  firmware: dmi: Optimize dmi_matches
2018-02-03 13:46:14 -08:00
Linus Torvalds
1726aa70e7 Merge branch 'fixes-v4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull integrity fixes from James Morris:

-  add James Bottommley as a Trusted Keys maintainer.

 - IMA: re-initialize iint->atomic_flags on iint_free(), from Mimi.

* 'fixes-v4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  ima: re-initialize iint->atomic_flags
  maintainers: update trusted keys
2018-02-03 13:44:29 -08:00
Thomas Gleixner
a96223f192 Merge branch 'msr-bitmaps' of git://git.kernel.org/pub/scm/virt/kvm/kvm into x86/pti
Pull the KVM prerequisites so the IBPB patches apply.
2018-02-03 22:30:16 +01:00
Linus Torvalds
c80c238a28 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) The bnx2x can hang if you give it a GSO packet with a segment size
    which is too big for the hardware, detect and drop in this case.
    From Daniel Axtens.

 2) Fix some overflows and pointer leaks in xtables, from Dmitry Vyukov.

 3) Missing RCU locking in igmp, from Eric Dumazet.

 4) Fix RX checksum handling on r8152, it can only checksum UDP and TCP
    packets. From Hayes Wang.

 5) Minor pacing tweak to TCP BBR congestion control, from Neal
    Cardwell.

 6) Missing RCU annotations in cls_u32, from Paolo Abeni.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (30 commits)
  Revert "defer call to mem_cgroup_sk_alloc()"
  soreuseport: fix mem leak in reuseport_add_sock()
  net: qlge: use memmove instead of skb_copy_to_linear_data
  net: qed: use correct strncpy() size
  net: cxgb4: avoid memcpy beyond end of source buffer
  cls_u32: add missing RCU annotation.
  r8152: set rx mode early when linking on
  r8152: fix wrong checksum status for received IPv4 packets
  nfp: fix TLV offset calculation
  net: pxa168_eth: add netconsole support
  net: igmp: add a missing rcu locking section
  ibmvnic: fix firmware version when no firmware level has been provided by the VIOS server
  vmxnet3: remove redundant initialization of pointer 'rq'
  lan78xx: remove redundant initialization of pointer 'phydev'
  net: jme: remove unused initialization of 'rxdesc'
  rtnetlink: remove check for IFLA_IF_NETNSID
  rocker: fix possible null pointer dereference in rocker_router_fib_event_work
  inet: Avoid unitialized variable warning in inet_unhash()
  net: bridge: Fix uninitialized error in br_fdb_sync_static()
  openvswitch: Remove padding from packet before L3+ conntrack processing
  ...
2018-02-03 13:16:55 -08:00
Linus Torvalds
6ec4de89b4 Andreas Gruenbacher wrote two additional patches that we would like
merged in this time. Both are regressions:
 
 1. The first fixes another kernel build dependency problem.
 2. The second fixes a performance regression in glock dumps.
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Merge tag 'gfs2-4.16.fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2

Pull GFS2 fixes from Bob Peterson:
 "Andreas Gruenbacher wrote two additional patches that we would like
  merged in this time. Both are regressions:

   - fix another kernel build dependency problem

   - fix a performance regression in glock dumps"

* tag 'gfs2-4.16.fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
  gfs2: Glock dump performance regression fix
  gfs2: Fix the crc32c dependency
2018-02-03 13:14:41 -08:00
Linus Torvalds
abbbd0211d SCSI postmerge on 20180202
This is a set of three patches that depended on mq and zone changes in
 the block tree (now upstream).
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-postmerge' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull second set of SCSI updates from James Bottomley:
 "This is a set of three patches that depended on mq and zone changes in
  the block tree (now upstream)"

* tag 'scsi-postmerge' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: sd: Remove zone write locking
  scsi: sd_zbc: Initialize device request queue zoned data
  scsi: scsi-mq-debugfs: Show more information
2018-02-03 13:07:56 -08:00
Linus Torvalds
6cb7903e37 linux-kselftest-4.16-rc1
This update to Kselftest consists of fixes, cleanups, and SPDX license
 additions.
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Merge tag 'linux-kselftest-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest updates from Shuah Khan:
 "This update to Kselftest consists of fixes, cleanups, and SPDX license
  additions"

* tag 'linux-kselftest-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: vm: update .gitignore with missing generated file
  selftests/x86: Add <test_name>{,_32,_64} targets
  selftests: Fix loss of test output in run_kselftests.sh
  selftest: ftrace: Fix to add 256 kprobe events correctly
  selftest: ftrace: Fix to pick text symbols for kprobes
  selftests: media_tests: Add SPDX license identifier
  selftests: kselftest.h: Add SPDX license identifier
  selftests: kselftest_install.sh: Add SPDX license identifier
  selftests: gen_kselftest_tar.h: Add SPDX license identifier
  selftests: media_tests: Fix Makefile 'clean' target warning
  tools/testing: Fix trailing semicolon
  kselftest: fix OOM in memory compaction test
  selftests: seccomp: fix compile error seccomp_bpf
2018-02-03 13:01:19 -08:00
Linus Torvalds
23c35f48f5 pinctrl: remove include file from <linux/device.h>
When pulling the recent pinctrl merge, I was surprised by how a
pinctrl-only pull request ended up rebuilding basically the whole
kernel.

The reason for that ended up being that <linux/device.h> included
<linux/pinctrl/devinfo.h>, so any change to that file ended up causing
pretty much every driver out there to be rebuilt.

The reason for that was because 'struct device' has this in it:

    #ifdef CONFIG_PINCTRL
        struct dev_pin_info     *pins;
    #endif

but we already avoid header includes for these kinds of things in that
header file, preferring to just use a forward-declaration of the
structure instead.  Exactly to avoid this kind of header dependency.

Since some drivers seem to expect that <linux/pinctrl/devinfo.h> header
to come in automatically, move the include to <linux/pinctrl/pinctrl.h>
instead.  It might be better to just make the includes more targeted,
but I'm not going to review every driver.

It would definitely be good to have a tool for finding and minimizing
header dependencies automatically - or at least help with them.  Right
now we almost certainly end up having way too many of these things, and
it's hard to test every single configuration.

FWIW, you can get a sense of the "hotness" of a header file with something
like this after doing a full build:

    find . -name '.*.o.cmd' -print0 |
        xargs -0 tail --lines=+2 |
        grep -v 'wildcard ' |
        tr ' \\' '\n' |
        sort | uniq -c | sort -n | less -S

which isn't exact (there are other things in those '*.o.cmd' than just
the dependencies, and the "--lines=+2" only removes the header), but
might a useful approximation.

With this patch, <linux/pinctrl/devinfo.h> drops to "only" having 833
users in the current x86-64 allmodconfig.  In contrast, <linux/device.h>
has 14857 build files including it directly or indirectly.

Of course, the headers that absolutely _everybody_ includes (things like
<linux/types.h> etc) get a score of 23000+.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-02-03 12:10:09 -08:00
Ard Biesheuvel
a81114d03e firmware: dmi: handle missing DMI data gracefully
Currently, when booting a kernel with DMI support on a platform that has
no DMI tables, the following output is emitted into the kernel log:

  [    0.128818] DMI not present or invalid.
  ...
  [    1.306659] dmi: Firmware registration failed.
  ...
  [    2.908681] dmi-sysfs: dmi entry is absent.

The first one is a pr_info(), but the subsequent ones are pr_err()s that
complain about a condition that is not really an error to begin with.

So let's clean this up, and give up silently if dma_available is not set.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Martin Hundebøll <mnhu@prevas.dk>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
2018-02-03 11:25:20 +01:00
Jean Delvare
a7770ae194 firmware: dmi_scan: Fix handling of empty DMI strings
The handling of empty DMI strings looks quite broken to me:
* Strings from 1 to 7 spaces are not considered empty.
* True empty DMI strings (string index set to 0) are not considered
  empty, and result in allocating a 0-char string.
* Strings with invalid index also result in allocating a 0-char
  string.
* Strings starting with 8 spaces are all considered empty, even if
  non-space characters follow (sounds like a weird thing to do, but
  I have actually seen occurrences of this in DMI tables before.)
* Strings which are considered empty are reported as 8 spaces,
  instead of being actually empty.

Some of these issues are the result of an off-by-one error in memcmp,
the rest is incorrect by design.

So let's get it square: missing strings and strings made of only
spaces, regardless of their length, should be treated as empty and
no memory should be allocated for them. All other strings are
non-empty and should be allocated.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Fixes: 79da472111 ("x86: fix DMI out of memory problems")
Cc: Parag Warudkar <parag.warudkar@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
2018-02-03 11:25:20 +01:00