1. 15 Jul, 2019 4 commits
    • Suraj Jitindar Singh's avatar
      KVM: PPC: Book3S HV: Save and restore guest visible PSSCR bits on pseries · c8b4083d
      Suraj Jitindar Singh authored
      The Performance Stop Status and Control Register (PSSCR) is used to
      control the power saving facilities of the processor. This register
      has various fields, some of which can be modified only in hypervisor
      state, and others which can be modified in both hypervisor and
      privileged non-hypervisor state. The bits which can be modified in
      privileged non-hypervisor state are referred to as guest visible.
      
      Currently the L0 hypervisor saves and restores both it's own host
      value as well as the guest value of the PSSCR when context switching
      between the hypervisor and guest. However a nested hypervisor running
      it's own nested guests (as indicated by kvmhv_on_pseries()) doesn't
      context switch the PSSCR register. That means if a nested (L2) guest
      modifies the PSSCR then the L1 guest hypervisor will run with that
      modified value, and if the L1 guest hypervisor modifies the PSSCR and
      then goes to run the nested (L2) guest again then the L2 PSSCR value
      will be lost.
      
      Fix this by having the (L1) nested hypervisor save and restore both
      its host and the guest PSSCR value when entering and exiting a
      nested (L2) guest. Note that only the guest visible parts of the PSSCR
      are context switched since this is all the L1 nested hypervisor can
      access, this is fine however as these are the only fields the L0
      hypervisor provides guest control of anyway and so all other fields
      are ignored.
      
      This could also have been implemented by adding the PSSCR register to
      the hv_regs passed to the L0 hypervisor as input to the H_ENTER_NESTED
      hcall, however this would have meant updating the structure layout and
      thus required modifications to both the L0 and L1 kernels. Whereas the
      approach used doesn't require L0 kernel modifications while achieving
      the same result.
      
      Fixes: 95a6432c ("KVM: PPC: Book3S HV: Streamlined guest entry/exit path on P9 for radix guests")
      Cc: stable@vger.kernel.org # v4.20+
      Signed-off-by: default avatarSuraj Jitindar Singh <sjitindarsingh@gmail.com>
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      Link: https://lore.kernel.org/r/20190703012022.15644-3-sjitindarsingh@gmail.com
      c8b4083d
    • Suraj Jitindar Singh's avatar
      powerpc/pmu: Set pmcregs_in_use in paca when running as LPAR · 28d2a6e6
      Suraj Jitindar Singh authored
      The ability to run nested guests under KVM means that a guest can also
      act as a hypervisor for it's own nested guest. Currently
      ppc_set_pmu_inuse() assumes that either FW_FEATURE_LPAR is set,
      indicating a guest environment, and so sets the pmcregs_in_use flag in
      the lppaca, or that it isn't set, indicating a hypervisor environment,
      and so sets the pmcregs_in_use flag in the paca.
      
      The pmcregs_in_use flag in the lppaca is used to communicate this
      information to a hypervisor and so must be set in a guest environment.
      The pmcregs_in_use flag in the paca is used by KVM code to determine
      whether the host state of the performance monitoring unit (PMU) must
      be saved and restored when running a guest.
      
      Thus when a guest also acts as a hypervisor it must set this bit in
      both places since it needs to ensure both that the real hypervisor
      saves it's PMU registers when it runs (requires pmcregs_in_use flag in
      lppaca), and that it saves it's own PMU registers when running a
      nested guest (requires pmcregs_in_use flag in paca).
      
      Modify ppc_set_pmu_inuse() so that the pmcregs_in_use bit is set in
      both the lppaca and the paca when a guest (LPAR) is running with the
      capability of running it's own guests (CONFIG_KVM_BOOK3S_HV_POSSIBLE).
      
      Fixes: 95a6432c ("KVM: PPC: Book3S HV: Streamlined guest entry/exit path on P9 for radix guests")
      Cc: stable@vger.kernel.org # v4.20+
      Signed-off-by: default avatarSuraj Jitindar Singh <sjitindarsingh@gmail.com>
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      Link: https://lore.kernel.org/r/20190703012022.15644-2-sjitindarsingh@gmail.com
      28d2a6e6
    • Suraj Jitindar Singh's avatar
      KVM: PPC: Book3S HV: Always save guest pmu for guest capable of nesting · 63279eeb
      Suraj Jitindar Singh authored
      The performance monitoring unit (PMU) registers are saved on guest
      exit when the guest has set the pmcregs_in_use flag in its lppaca, if
      it exists, or unconditionally if it doesn't. If a nested guest is
      being run then the hypervisor doesn't, and in most cases can't, know
      if the PMU registers are in use since it doesn't know the location of
      the lppaca for the nested guest, although it may have one for its
      immediate guest. This results in the values of these registers being
      lost across nested guest entry and exit in the case where the nested
      guest was making use of the performance monitoring facility while it's
      nested guest hypervisor wasn't.
      
      Further more the hypervisor could interrupt a guest hypervisor between
      when it has loaded up the PMU registers and it calling H_ENTER_NESTED
      or between returning from the nested guest to the guest hypervisor and
      the guest hypervisor reading the PMU registers, in
      kvmhv_p9_guest_entry(). This means that it isn't sufficient to just
      save the PMU registers when entering or exiting a nested guest, but
      that it is necessary to always save the PMU registers whenever a guest
      is capable of running nested guests to ensure the register values
      aren't lost in the context switch.
      
      Ensure the PMU register values are preserved by always saving their
      value into the vcpu struct when a guest is capable of running nested
      guests.
      
      This should have minimal performance impact however any impact can be
      avoided by booting a guest with "-machine pseries,cap-nested-hv=false"
      on the qemu commandline.
      
      Fixes: 95a6432c ("KVM: PPC: Book3S HV: Streamlined guest entry/exit path on P9 for radix guests")
      Cc: stable@vger.kernel.org # v4.20+
      Signed-off-by: default avatarSuraj Jitindar Singh <sjitindarsingh@gmail.com>
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      Link: https://lore.kernel.org/r/20190703012022.15644-1-sjitindarsingh@gmail.com
      63279eeb
    • Suraj Jitindar Singh's avatar
      powerpc/mm: Limit rma_size to 1TB when running without HV mode · da0ef933
      Suraj Jitindar Singh authored
      The virtual real mode addressing (VRMA) mechanism is used when a
      partition is using HPT (Hash Page Table) translation and performs real
      mode accesses (MSR[IR|DR] = 0) in non-hypervisor mode. In this mode
      effective address bits 0:23 are treated as zero (i.e. the access is
      aliased to 0) and the access is performed using an implicit 1TB SLB
      entry.
      
      The size of the RMA (Real Memory Area) is communicated to the guest as
      the size of the first memory region in the device tree. And because of
      the mechanism described above can be expected to not exceed 1TB. In
      the event that the host erroneously represents the RMA as being larger
      than 1TB, guest accesses in real mode to memory addresses above 1TB
      will be aliased down to below 1TB. This means that a memory access
      performed in real mode may differ to one performed in virtual mode for
      the same memory address, which would likely have unintended
      consequences.
      
      To avoid this outcome have the guest explicitly limit the size of the
      RMA to the current maximum, which is 1TB. This means that even if the
      first memory block is larger than 1TB, only the first 1TB should be
      accessed in real mode.
      
      Fixes: c610d65c ("powerpc/pseries: lift RTAS limit for hash")
      Cc: stable@vger.kernel.org # v4.16+
      Signed-off-by: default avatarSuraj Jitindar Singh <sjitindarsingh@gmail.com>
      Tested-by: default avatarSatheesh Rajendran <sathnaga@linux.vnet.ibm.com>
      Reviewed-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      Link: https://lore.kernel.org/r/20190710052018.14628-1-sjitindarsingh@gmail.com
      da0ef933
  2. 13 Jul, 2019 15 commits
    • Linus Torvalds's avatar
      Merge tag 'powerpc-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · 192f0f8e
      Linus Torvalds authored
      Pull powerpc updates from Michael Ellerman:
       "Notable changes:
      
         - Removal of the NPU DMA code, used by the out-of-tree Nvidia driver,
           as well as some other functions only used by drivers that haven't
           (yet?) made it upstream.
      
         - A fix for a bug in our handling of hardware watchpoints (eg. perf
           record -e mem: ...) which could lead to register corruption and
           kernel crashes.
      
         - Enable HAVE_ARCH_HUGE_VMAP, which allows us to use large pages for
           vmalloc when using the Radix MMU.
      
         - A large but incremental rewrite of our exception handling code to
           use gas macros rather than multiple levels of nested CPP macros.
      
        And the usual small fixes, cleanups and improvements.
      
        Thanks to: Alastair D'Silva, Alexey Kardashevskiy, Andreas Schwab,
        Aneesh Kumar K.V, Anju T Sudhakar, Anton Blanchard, Arnd Bergmann,
        Athira Rajeev, Cédric Le Goater, Christian Lamparter, Christophe
        Leroy, Christophe Lombard, Christoph Hellwig, Daniel Axtens, Denis
        Efremov, Enrico Weigelt, Frederic Barrat, Gautham R. Shenoy, Geert
        Uytterhoeven, Geliang Tang, Gen Zhang, Greg Kroah-Hartman, Greg Kurz,
        Gustavo Romero, Krzysztof Kozlowski, Madhavan Srinivasan, Masahiro
        Yamada, Mathieu Malaterre, Michael Neuling, Nathan Lynch, Naveen N.
        Rao, Nicholas Piggin, Nishad Kamdar, Oliver O'Halloran, Qian Cai, Ravi
        Bangoria, Sachin Sant, Sam Bobroff, Satheesh Rajendran, Segher
        Boessenkool, Shaokun Zhang, Shawn Anastasio, Stewart Smith, Suraj
        Jitindar Singh, Thiago Jung Bauermann, YueHaibing"
      
      * tag 'powerpc-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (163 commits)
        powerpc/powernv/idle: Fix restore of SPRN_LDBAR for POWER9 stop state.
        powerpc/eeh: Handle hugepages in ioremap space
        ocxl: Update for AFU descriptor template version 1.1
        powerpc/boot: pass CONFIG options in a simpler and more robust way
        powerpc/boot: add {get, put}_unaligned_be32 to xz_config.h
        powerpc/irq: Don't WARN continuously in arch_local_irq_restore()
        powerpc/module64: Use symbolic instructions names.
        powerpc/module32: Use symbolic instructions names.
        powerpc: Move PPC_HA() PPC_HI() and PPC_LO() to ppc-opcode.h
        powerpc/module64: Fix comment in R_PPC64_ENTRY handling
        powerpc/boot: Add lzo support for uImage
        powerpc/boot: Add lzma support for uImage
        powerpc/boot: don't force gzipped uImage
        powerpc/8xx: Add microcode patch to move SMC parameter RAM.
        powerpc/8xx: Use IO accessors in microcode programming.
        powerpc/8xx: replace #ifdefs by IS_ENABLED() in microcode.c
        powerpc/8xx: refactor programming of microcode CPM params.
        powerpc/8xx: refactor printing of microcode patch name.
        powerpc/8xx: Refactor microcode write
        powerpc/8xx: refactor writing of CPM microcode arrays
        ...
      192f0f8e
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc · ec924975
      Linus Torvalds authored
      Pull sparc updates from David Miller:
       "Just a few small changes:
      
         - Fix console naming inconsistency with hypervisor consoles, from
           John Paul Adrian Glaubitz
      
         - Fix userland compilation due to use of u_int, from Masahiro Yamada"
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
        sparc64: Add missing newline at end of file
        sparc: fix unknown type name u_int in uapi header
        sparc: configs: Remove useless UEVENT_HELPER_PATH
        sparc: Remove redundant copy of the LGPL-2.0
        sunhv: Fix device naming inconsistency between sunhv_console and sunhv_reg
      ec924975
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · d1210929
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Fix excessive stack usage in cxgb4, from Arnd Bergmann.
      
       2) Missing skb queue lock init in tipc, from Chris Packham.
      
       3) Fix some regressions in ipv6 flow label handling, from Eric Dumazet.
      
       4) Elide flow dissection of local packets in FIB rules, from Petar
          Penkov.
      
       5) Fix TLS support build failure in mlx5, from Tariq Toukab.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (36 commits)
        ppp: mppe: Revert "ppp: mppe: Add softdep to arc4"
        net: dsa: qca8k: replace legacy gpio include
        net: hisilicon: Use devm_platform_ioremap_resource
        cxgb4: reduce kernel stack usage in cudbg_collect_mem_region()
        tipc: ensure head->lock is initialised
        tc-tests: updated skbedit tests
        nfp: flower: ensure ip protocol is specified for L4 matches
        nfp: flower: fix ethernet check on match fields
        net/mlx5e: Provide cb_list pointer when setting up tc block on rep
        net: phy: make exported variables non-static
        net: sched: Fix NULL-pointer dereference in tc_indr_block_ing_cmd()
        davinci_cpdma: don't cast dma_addr_t to pointer
        net: openvswitch: do not update max_headroom if new headroom is equal to old headroom
        net/mlx5e: Convert single case statement switch statements into if statements
        net/mlx5: E-Switch, Reduce ingress acl modify metadata stack usage
        net/mlx5e: Fix unused variable warning when CONFIG_MLX5_ESWITCH is off
        net/mlx5e: Fix compilation error in TLS code
        ipv6: fix static key imbalance in fl_create()
        ipv6: fix potential crash in ip6_datagram_dst_update()
        ipv6: tcp: fix flowlabels reflection for RST packets
        ...
      d1210929
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide · 1fa91854
      Linus Torvalds authored
      Pull IDE update from David Miller:
       "Small cleanup"
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide:
        ide: use BIT() macro for defining bit-flags
      1fa91854
    • Linus Torvalds's avatar
      Merge tag 'mtd/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux · 3f069622
      Linus Torvalds authored
      Pull MTD updates from Miquel Raynal:
       "This contains the following changes for MTD:
      
        MTD core changes:
         - New Hyperbus framework
         - New _is_locked (concat) implementation
         - Various cleanups
      
        NAND core changes:
         - use longest matching pattern in ->exec_op() default parser
         - export NAND operation tracer
         - add flag to indicate panic_write in MTD
         - use kzalloc() instead of kmalloc() and memset()
      
        Raw NAND controller drivers changes:
         - brcmnand:
             - fix BCH ECC layout for large page NAND parts
             - fallback to detected ecc-strength, ecc-step-size
             - when oops in progress use pio and interrupt polling
             - code refactor code to introduce helper functions
             - add support for v7.3 controller
         - FSMC:
             - use nand_op_trace for operation tracing
         - GPMI:
             - move all driver code into single file
             - various cleanups (including dmaengine changes)
             - use runtime PM to manage clocks
             - implement exec_op
         - MTK:
             - correct low level time calculation of r/w cycle
             - improve data sampling timing for read cycle
             - add validity check for CE# pin setting
             - fix wrongly assigned OOB buffer pointer issue
             - re-license MTK NAND driver as Dual MIT/GPL
         - STM32:
             - manage the get_irq error case
             - increase DMA completion timeouts
      
        Raw NAND chips drivers changes:
         - Macronix: add read-retry support
      
        Onenand driver changes:
         - add support for 8Gb datasize chips
         - avoid fall-through warnings
      
        SPI-NAND changes:
         - define macros for page-read ops with three-byte addresses
         - add support for two-byte device IDs and then for GigaDevice
           GD5F1GQ4UFxxG
         - add initial support for Paragon PN26G0xA
         - handle the case where the last page read has bitflips
      
        SPI-NOR core changes:
         - add support for the mt25ql02g and w25q16jv flashes
         - print error in case of jedec read id fails
         - is25lp256: add post BFPT fix to correct the addr_width
      
        SPI NOR controller drivers changes:
         - intel-spi: Add support for Intel Elkhart Lake SPI serial flash
         - smt32: remove the driver as the driver was replaced by spi-stm32-qspi.c
         - cadence-quadspi: add reset control"
      
      * tag 'mtd/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (60 commits)
        mtd: concat: implement _is_locked mtd operation
        mtd: concat: refactor concat_lock/concat_unlock
        mtd: abi: do not use C++ style comments in uapi header
        mtd: afs: remove unneeded NULL check
        mtd: rawnand: stm32_fmc2: increase DMA completion timeouts
        mtd: rawnand: Use kzalloc() instead of kmalloc() and memset()
        mtd: hyperbus: Add driver for TI's HyperBus memory controller
        mtd: spinand: read returns badly if the last page has bitflips
        mtd: spinand: Add initial support for Paragon PN26G0xA
        mtd: rawnand: mtk: Re-license MTK NAND driver as Dual MIT/GPL
        mtd: rawnand: gpmi: remove double assignment to block_size
        dt-bindings: mtd: brcmnand: Add brcmnand, brcmnand-v7.3 support
        mtd: rawnand: brcmnand: Add support for v7.3 controller
        mtd: rawnand: brcmnand: Refactored code to introduce helper functions
        mtd: rawnand: brcmnand: When oops in progress use pio and interrupt polling
        mtd: Add flag to indicate panic_write
        mtd: rawnand: Add Macronix NAND read retry support
        mtd: onenand: Avoid fall-through warnings
        mtd: spinand: Add support for GigaDevice GD5F1GQ4UFxxG
        mtd: spinand: Add support for two-byte device IDs
        ...
      3f069622
    • Linus Torvalds's avatar
      Merge tag 'for-5.3/dm-changes' of... · 22608405
      Linus Torvalds authored
      Merge tag 'for-5.3/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
      
      Pull device mapper updates from Mike Snitzer:
      
       - Add encrypted byte-offset initialization vector (eboiv) to DM crypt.
      
       - Add optional discard features to DM snapshot which allow freeing
         space from a DM device whose free space was exhausted.
      
       - Various small improvements to use struct_size() and kzalloc().
      
       - Fix to check if DM thin metadata is in fail_io mode before attempting
         to update the superblock to set the needs_check flag. Otherwise the
         DM thin-pool can hang.
      
       - Fix DM bufio shrinker's potential for ABBA recursion deadlock with DM
         thin provisioning on loop usecase.
      
      * tag 'for-5.3/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
        dm bufio: fix deadlock with loop device
        dm snapshot: add optional discard support features
        dm crypt: implement eboiv - encrypted byte-offset initialization vector
        dm crypt: remove obsolete comment about plumb IV
        dm crypt: wipe private IV struct after key invalid flag is set
        dm integrity: use kzalloc() instead of kmalloc() + memset()
        dm: update stale comment in end_clone_bio()
        dm log writes: fix incorrect comment about the logged sequence example
        dm log writes: use struct_size() to calculate size of pending_block
        dm crypt: use struct_size() when allocating encryption context
        dm integrity: always set version on superblock update
        dm thin metadata: check if in fail_io mode when setting needs_check
      22608405
    • Linus Torvalds's avatar
      Merge tag 'for-linus-5.3' of git://github.com/cminyard/linux-ipmi · 92adeb61
      Linus Torvalds authored
      Pull IPMI updates from Corey Minyard:
       "Some small fixes for various things, nothing huge, mostly found by
        automated tools.
      
        Plus add a driver that allows Linux to act as an IPMB slave device, so
        it can be a satellite MC in an IPMI network"
      
      * tag 'for-linus-5.3' of git://github.com/cminyard/linux-ipmi:
        docs: ipmb: place it at driver-api and convert to ReST
        fix platform_no_drv_owner.cocci warnings
        ipmi: ipmb: don't allocate i2c_client on stack
        ipmi: ipmb: Fix build error while CONFIG_I2C is set to m
        Add support for IPMB driver
        drivers: ipmi: Drop device reference
        ipmi_ssif: fix unexpected driver unregister warning
        ipmi_si: use bool type for initialized variable
        ipmi_si: fix unexpected driver unregister warning
      92adeb61
    • Linus Torvalds's avatar
      Merge tag 'pinctrl-v5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl · 43c95d36
      Linus Torvalds authored
      Pull pin control updates from Linus Walleij:
       "This is the bulk of pin control changes for the v5.3 kernel cycle:
      
        Core changes:
      
         - Device links can optionally be added between a pin control producer
           and its consumers. This will affect how the system power management
           is handled: a pin controller will not suspend before all of its
           consumers have been suspended.
      
           This was necessary for the ST Microelectronics STMFX expander and
           need to be tested on other systems as well: it makes sense to make
           this default in the long run.
      
           Right now it is opt-in per driver.
      
         - Drive strength can be specified in microamps. With decreases in
           silicon technology, milliamps isn't granular enough, let's make it
           possible to select drive strengths in microamps.
      
           Right now the Meson (AMlogic) driver needs this.
      
        New drivers:
      
         - New subdriver for the Tegra 194 SoC.
      
         - New subdriver for the Qualcomm SDM845.
      
         - New subdriver for the Qualcomm SM8150.
      
         - New subdriver for the Freescale i.MX8MN (Freescale is now a product
           line of NXP).
      
         - New subdriver for Marvell MV98DX1135.
      
        Driver improvements:
      
         - The Bitmain BM1880 driver now supports pin config in addition to
           muxing.
      
         - The Qualcomm drivers can now reserve some GPIOs as taken aside and
           not usable for users. This is used in ACPI systems to take out some
           GPIO lines used by the BIOS so that noone else (neither kernel nor
           userspace) will play with them by mistake and crash the machine.
      
         - A slew of refurbishing around the Aspeed drivers (board management
           controllers for servers) in preparation for the new Aspeed AST2600
           SoC.
      
         - A slew of improvements over the SH PFC drivers as usual.
      
         - Misc cleanups and fixes"
      
      * tag 'pinctrl-v5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (106 commits)
        pinctrl: aspeed: Strip moved macros and structs from private header
        pinctrl: aspeed: Fix missed include
        pinctrl: baytrail: Use GENMASK() consistently
        pinctrl: baytrail: Re-use data structures from pinctrl-intel.h
        pinctrl: baytrail: Use defined macro instead of magic in byt_get_gpio_mux()
        pinctrl: qcom: Add SM8150 pinctrl driver
        dt-bindings: pinctrl: qcom: Add SM8150 pinctrl binding
        dt-bindings: pinctrl: qcom: Document missing gpio nodes
        pinctrl: aspeed: Add implementation-related documentation
        pinctrl: aspeed: Split out pinmux from general pinctrl
        pinctrl: aspeed: Clarify comment about strapping W1C
        pinctrl: aspeed: Correct comment that is no longer true
        MAINTAINERS: Add entry for ASPEED pinctrl drivers
        dt-bindings: pinctrl: aspeed: Convert AST2500 bindings to json-schema
        dt-bindings: pinctrl: aspeed: Convert AST2400 bindings to json-schema
        dt-bindings: pinctrl: aspeed: Split bindings document in two
        pinctrl: qcom: Add irq_enable callback for msm gpio
        pinctrl: madera: Fixup SPDX headers
        pinctrl: qcom: sdm845: Fix CONFIG preprocessor guard
        pinctrl: tegra: Add bitmask support for parked bits
        ...
      43c95d36
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input · 073c916b
      Linus Torvalds authored
      Pull input updates from Dmitry Torokhov:
      
       - an update to Elan touchpad SMBus driver to fetch device parameters
         (size, resolution) while it is still in PS/2 mode, before switching
         over to SMBus, as in that mode some devices return garbage dimensions
      
       - update to iforce joystick driver
      
       - miscellaneous driver fixes
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (48 commits)
        Input: gpio_keys_polled - allow specifying name of input device
        Input: edt-ft5x06 - simplify event reporting code
        Input: max77650-onkey - add MODULE_ALIAS()
        Input: atmel_mxt_ts - fix leak in mxt_update_cfg()
        Input: synaptics - enable SMBUS on T480 thinkpad trackpad
        Input: atmel_mxt_ts - fix -Wunused-const-variable
        Input: joydev - extend absolute mouse detection
        HID: quirks: Refactor ELAN 400 and 401 handling
        Input: elan_i2c - export the device id whitelist
        Input: edt-ft5x06 - use get_unaligned_be16()
        Input: iforce - add the Saitek R440 Force Wheel
        Input: iforce - use unaligned accessors, where appropriate
        Input: iforce - drop couple of temps from transport code
        Input: iforce - drop bus type from iforce structure
        Input: iforce - use DMA-safe buffores for USB transfers
        Input: iforce - allow callers supply data buffer when fetching device IDs
        Input: iforce - only call iforce_process_packet() if initialized
        Input: iforce - signal command completion from transport code
        Input: iforce - do not combine arguments for iforce_process_packet()
        Input: iforce - factor out hat handling when parsing packets
        ...
      073c916b
    • Linus Torvalds's avatar
      Merge tag 'for-5.3/io_uring-20190711' of git://git.kernel.dk/linux-block · a2d79c71
      Linus Torvalds authored
      Pull io_uring updates from Jens Axboe:
       "This contains:
      
         - Support for recvmsg/sendmsg as first class opcodes.
      
           I don't envision going much further down this path, as there are
           plans in progress to support potentially any system call in an
           async fashion through io_uring. But I think it does make sense to
           have certain core ops available directly, especially those that can
           support a "try this non-blocking" flag/mode. (me)
      
         - Handle generic short reads automatically.
      
           This can happen fairly easily if parts of the buffered read is
           cached. Since the application needs to issue another request for
           the remainder, just do this internally and save kernel/user
           roundtrip while providing a nicer more robust API. (me)
      
         - Support for linked SQEs.
      
           This allows SQEs to depend on each other, enabling an application
           to eg queue a read-from-this-file,write-to-that-file pair. (me)
      
         - Fix race in stopping SQ thread (Jackie)"
      
      * tag 'for-5.3/io_uring-20190711' of git://git.kernel.dk/linux-block:
        io_uring: fix io_sq_thread_stop running in front of io_sq_thread
        io_uring: add support for recvmsg()
        io_uring: add support for sendmsg()
        io_uring: add support for sqe links
        io_uring: punt short reads to async context
        uio: make import_iovec()/compat_import_iovec() return bytes on success
      a2d79c71
    • Eric Biggers's avatar
      ppp: mppe: Revert "ppp: mppe: Add softdep to arc4" · 25a09ce7
      Eric Biggers authored
      Commit 0e5a610b ("ppp: mppe: switch to RC4 library interface"),
      which was merged through the crypto tree for v5.3, changed ppp_mppe.c to
      use the new arc4_crypt() library function rather than access RC4 through
      the dynamic crypto_skcipher API.
      
      Meanwhile commit aad1dcc4 ("ppp: mppe: Add softdep to arc4") was
      merged through the net tree and added a module soft-dependency on "arc4".
      
      The latter commit no longer makes sense because the code now uses the
      "libarc4" module rather than "arc4", and also due to the direct use of
      arc4_crypt(), no module soft-dependency is required.
      
      So revert the latter commit.
      
      Cc: Takashi Iwai <tiwai@suse.de>
      Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
      Signed-off-by: default avatarEric Biggers <ebiggers@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      25a09ce7
    • Linus Torvalds's avatar
      Merge tag 'dlm-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm · 964a4eac
      Linus Torvalds authored
      Pull dlm updates from David Teigland:
       "This set removes some unnecessary debugfs error handling, and checks
        that lowcomms workqueues are not NULL before destroying"
      
      * tag 'dlm-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm:
        dlm: no need to check return value of debugfs_create functions
        dlm: check if workqueues are NULL before flushing/destroying
      964a4eac
    • Linus Torvalds's avatar
      Merge tag '9p-for-5.3' of git://github.com/martinetd/linux · 23bbbf5c
      Linus Torvalds authored
      Pull 9p updates from Dominique Martinet:
       "Two small fixes to properly cleanup the 9p transports list if
        virtio/xen module initialization fail.
      
        9p might otherwise try to access memory from a module that failed to
        register got freed"
      
      * tag '9p-for-5.3' of git://github.com/martinetd/linux:
        9p/xen: Add cleanup path in p9_trans_xen_init
        9p/virtio: Add cleanup path in p9_virtio_init
      23bbbf5c
    • Linus Torvalds's avatar
      Merge tag 'f2fs-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs · a641a88e
      Linus Torvalds authored
      Pull f2fs updates from Jaegeuk Kim:
       "In this round, we've introduced native swap file support which can
        exploit DIO, enhanced existing checkpoint=disable feature with
        additional mount option to tune the triggering condition, and allowed
        user to preallocate physical blocks in a pinned file which will be
        useful to avoid f2fs fragmentation in append-only workloads. In
        addition, we've fixed subtle quota corruption issue.
      
        Enhancements:
         - add swap file support which uses DIO
         - allocate blocks for pinned file
         - allow SSR and mount option to enhance checkpoint=disable
         - enhance IPU IOs
         - add more sanity checks such as memory boundary access
      
        Bug fixes:
         - quota corruption in very corner case of error-injected SPO case
         - fix root_reserved on remount and some wrong counts
         - add missing fsck flag
      
        Some patches were also introduced to clean up ambiguous i_flags and
        debugging messages codes"
      
      * tag 'f2fs-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (33 commits)
        f2fs: improve print log in f2fs_sanity_check_ckpt()
        f2fs: avoid out-of-range memory access
        f2fs: fix to avoid long latency during umount
        f2fs: allow all the users to pin a file
        f2fs: support swap file w/ DIO
        f2fs: allocate blocks for pinned file
        f2fs: fix is_idle() check for discard type
        f2fs: add a rw_sem to cover quota flag changes
        f2fs: set SBI_NEED_FSCK for xattr corruption case
        f2fs: use generic EFSBADCRC/EFSCORRUPTED
        f2fs: Use DIV_ROUND_UP() instead of open-coding
        f2fs: print kernel message if filesystem is inconsistent
        f2fs: introduce f2fs_<level> macros to wrap f2fs_printk()
        f2fs: avoid get_valid_blocks() for cleanup
        f2fs: ioctl for removing a range from F2FS
        f2fs: only set project inherit bit for directory
        f2fs: separate f2fs i_flags from fs_flags and ext4 i_flags
        f2fs: replace ktype default_attrs with default_groups
        f2fs: Add option to limit required GC for checkpoint=disable
        f2fs: Fix accounting for unusable blocks
        ...
      a641a88e
    • Linus Torvalds's avatar
      Merge tag 'xfs-5.3-merge-12' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux · 4ce9d181
      Linus Torvalds authored
      Pull xfs updates from Darrick Wong:
       "In this release there are a significant amounts of consolidations and
        cleanups in the log code; restructuring of the log to issue struct
        bios directly; new bulkstat ioctls to return v5 fs inode information
        (and fix all the padding problems of the old ioctl); the beginnings of
        multithreaded inode walks (e.g. quotacheck); and a reduction in memory
        usage in the online scrub code leading to reduced runtimes.
      
         - Refactor inode geometry calculation into a single structure instead
           of open-coding pieces everywhere.
      
         - Add online repair to build options.
      
         - Remove unnecessary function call flags and functions.
      
         - Claim maintainership of various loose xfs documentation and header
           files.
      
         - Use struct bio directly for log buffer IOs instead of struct
           xfs_buf.
      
         - Reduce log item boilerplate code requirements.
      
         - Merge log item code spread across too many files.
      
         - Further distinguish between log item commits and cancellations.
      
         - Various small cleanups to the ag small allocator.
      
         - Support cgroup-aware writeback
      
         - libxfs refactoring for mkfs cleanup
      
         - Remove unneeded #includes
      
         - Fix a memory allocation miscalculation in the new log bio code
      
         - Fix bisection problems
      
         - Fix a crash in ioend processing caused by tripping over freeing of
           preallocated transactions
      
         - Split out a generic inode walk mechanism from the bulkstat code,
           hook up all the internal users to use the walking code, then clean
           up bulkstat to serve only the bulkstat ioctls.
      
         - Add a multithreaded iwalk implementation to speed up quotacheck on
           fast storage with many CPUs.
      
         - Remove unnecessary return values in logging teardown functions.
      
         - Supplement the bstat and inogrp structures with new bulkstat and
           inumbers structures that have all the fields we need for v5
           filesystem features and none of the padding problems of their
           predecessors.
      
         - Wire up new ioctls that use the new structures with a much simpler
           bulk_ireq structure at the head instead of the pointerhappy mess we
           had before.
      
         - Enable userspace to constrain bulkstat returns to a single AG or a
           single special inode so that we can phase out a lot of geometry
           guesswork in userspace.
      
         - Reduce memory consumption and zeroing overhead in extended
           attribute scrub code.
      
         - Fix some behavioral regressions in the new bulkstat backend code.
      
         - Fix some behavioral regressions in the new log bio code"
      
      * tag 'xfs-5.3-merge-12' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (100 commits)
        xfs: chain bios the right way around in xfs_rw_bdev
        xfs: bump INUMBERS cursor correctly in xfs_inumbers_walk
        xfs: don't update lastino for FSBULKSTAT_SINGLE
        xfs: online scrub needn't bother zeroing its temporary buffer
        xfs: only allocate memory for scrubbing attributes when we need it
        xfs: refactor attr scrub memory allocation function
        xfs: refactor extended attribute buffer pointer functions
        xfs: attribute scrub should use seen_enough to pass error values
        xfs: allow single bulkstat of special inodes
        xfs: specify AG in bulk req
        xfs: wire up the v5 inumbers ioctl
        xfs: wire up new v5 bulkstat ioctls
        xfs: introduce v5 inode group structure
        xfs: introduce new v5 bulkstat structure
        xfs: rename bulkstat functions
        xfs: remove various bulk request typedef usage
        fs: xfs: xfs_log: Change return type from int to void
        xfs: poll waiting for quotacheck
        xfs: multithreaded iwalk implementation
        xfs: refactor INUMBERS to use iwalk functions
        ...
      4ce9d181
  3. 12 Jul, 2019 21 commits
    • Linus Torvalds's avatar
      Merge tag 'vfs-fix-ioctl-checking-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux · 5010fe9f
      Linus Torvalds authored
      Pull common SETFLAGS/FSSETXATTR parameter checking from Darrick Wong:
       "Here's a patch series that sets up common parameter checking functions
        for the FS_IOC_SETFLAGS and FS_IOC_FSSETXATTR ioctl implementations.
      
        The goal here is to reduce the amount of behaviorial variance between
        the filesystems where those ioctls originated (ext2 and XFS,
        respectively) and everybody else.
      
         - Standardize parameter checking for the SETFLAGS and FSSETXATTR
           ioctls (which were the file attribute setters for ext4 and xfs and
           have now been hoisted to the vfs)
      
         - Only allow the DAX flag to be set on files and directories"
      
      * tag 'vfs-fix-ioctl-checking-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
        vfs: only allow FSSETXATTR to set DAX flag on files and dirs
        vfs: teach vfs_ioc_fssetxattr_check to check extent size hints
        vfs: teach vfs_ioc_fssetxattr_check to check project id info
        vfs: create a generic checking function for FS_IOC_FSSETXATTR
        vfs: create a generic checking and prep function for FS_IOC_SETFLAGS
      5010fe9f
    • Linus Torvalds's avatar
      Merge tag 'linux-kselftest-5.3-rc1' of... · 8487d822
      Linus Torvalds authored
      Merge tag 'linux-kselftest-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
      
      Pull Kselftest updates from Shuah Khan:
       "This Kselftest update for Linux 5.3-rc1 consists of build failure
        fixes and minor code cleaning patch to remove duplicate headers"
      
      * tag 'linux-kselftest-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
        rseq/selftests: Fix Thumb mode build failure on arm32
        kselftests: cgroup: remove duplicated include from test_freezer.c
        selftests: timestamping: Fix SIOCGSTAMP undeclared build failure
        selftests: dma-buf: Adding kernel config fragment CONFIG_UDMABUF=y
      8487d822
    • Linus Torvalds's avatar
      Merge tag 'kconfig-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild · 106f1466
      Linus Torvalds authored
      Pull Kconfig updates from Masahiro Yamada:
      
       - always require argument for --defconfig and remove the hard-coded
         arch/$(ARCH)/defconfig path
      
       - make arch/$(SRCARCH)/configs/defconfig the new default of defconfig
      
       - some code cleanups
      
      * tag 'kconfig-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
        kconfig: remove meaningless if-conditional in conf_read()
        kconfig: Fix spelling of sym_is_changable
        unicore32: rename unicore32_defconfig to defconfig
        kconfig: make arch/*/configs/defconfig the default of KBUILD_DEFCONFIG
        kconfig: add static qualifier to expand_string()
        kconfig: require the argument of --defconfig
        kconfig: remove always false ifeq ($(KBUILD_DEFCONFIG,) conditional
      106f1466
    • Linus Torvalds's avatar
      Merge tag 'kbuild-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild · 39ceda5c
      Linus Torvalds authored
      Pull Kbuild updates from Masahiro Yamada:
      
       - remove headers_{install,check}_all targets
      
       - remove unreasonable 'depends on !UML' from CONFIG_SAMPLES
      
       - re-implement 'make headers_install' more cleanly
      
       - add new header-test-y syntax to compile-test headers
      
       - compile-test exported headers to ensure they are compilable in
         user-space
      
       - compile-test headers under include/ to ensure they are self-contained
      
       - remove -Waggregate-return, -Wno-uninitialized, -Wno-unused-value
         flags
      
       - add -Werror=unknown-warning-option for Clang
      
       - add 128-bit built-in types support to genksyms
      
       - fix missed rebuild of modules.builtin
      
       - propagate 'No space left on device' error in fixdep to Make
      
       - allow Clang to use its integrated assembler
      
       - improve some coccinelle scripts
      
       - add a new flag KBUILD_ABS_SRCTREE to request Kbuild to use absolute
         path for $(srctree).
      
       - do not ignore errors when compression utility is missing
      
       - misc cleanups
      
      * tag 'kbuild-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (49 commits)
        kbuild: use -- separater intead of $(filter-out ...) for cc-cross-prefix
        kbuild: Inform user to pass ARCH= for make mrproper
        kbuild: fix compression errors getting ignored
        kbuild: add a flag to force absolute path for srctree
        kbuild: replace KBUILD_SRCTREE with boolean building_out_of_srctree
        kbuild: remove src and obj from the top Makefile
        scripts/tags.sh: remove unused environment variables from comments
        scripts/tags.sh: drop SUBARCH support for ARM
        kbuild: compile-test kernel headers to ensure they are self-contained
        kheaders: include only headers into kheaders_data.tar.xz
        kheaders: remove meaningless -R option of 'ls'
        kbuild: support header-test-pattern-y
        kbuild: do not create wrappers for header-test-y
        kbuild: compile-test exported headers to ensure they are self-contained
        init/Kconfig: add CONFIG_CC_CAN_LINK
        kallsyms: exclude kasan local symbols on s390
        kbuild: add more hints about SUBDIRS replacement
        coccinelle: api/stream_open: treat all wait_.*() calls as blocking
        coccinelle: put_device: Add a cast to an expression for an assignment
        coccinelle: put_device: Adjust a message construction
        ...
      39ceda5c
    • Linus Torvalds's avatar
      Merge tag 'asm-generic-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic · 5f26f114
      Linus Torvalds authored
      Pull asm-generic updates from Arnd Bergmann:
       "The asm-generic changes for 5.3 consist of a cleanup series to remove
        ptrace.h from Christoph Hellwig, who explains:
      
          'asm-generic/ptrace.h is a little weird in that it doesn't actually
           implement any functionality, but it provided multiple layers of
           macros that just implement trivial inline functions. We implement
           those directly in the few architectures and be off with a much
           simpler design.'
      
        at https://lore.kernel.org/lkml/20190624054728.30966-1-hch@lst.de/"
      
      * tag 'asm-generic-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
        asm-generic: remove ptrace.h
        x86: don't use asm-generic/ptrace.h
        sh: don't use asm-generic/ptrace.h
        powerpc: don't use asm-generic/ptrace.h
        arm64: don't use asm-generic/ptrace.h
      5f26f114
    • Linus Torvalds's avatar
      Merge tag 's390-5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux · aabfea8d
      Linus Torvalds authored
      Pull more s390 updates from Vasily Gorbik:
      
       - Fix integer overflow during stack frame unwind with invalid
         backchain.
      
       - Cleanup unused symbol export in zcrypt code.
      
       - Fix MIO addressing control activation in PCI code and expose its
         usage via sysfs.
      
       - Fix kernel image signature verification report presence detection.
      
       - Fix irq registration in vfio-ap code.
      
       - Add CPU measurement counters for newer machines.
      
       - Add base DASD thin provisioning support and code cleanups.
      
      * tag 's390-5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (21 commits)
        s390/unwind: avoid int overflow in outside_of_stack
        s390/zcrypt: remove the exporting of ap_query_configuration
        s390/pci: add mio_enabled attribute
        s390: fix setting of mio addressing control
        s390/ipl: Fix detection of has_secure attribute
        s390: vfio-ap: fix irq registration
        s390/cpumf: Add extended counter set definitions for model 8561 and 8562
        s390/dasd: Handle out-of-space constraint
        s390/dasd: Add discard support for ESE volumes
        s390/dasd: Use ALIGN_DOWN macro
        s390/dasd: Make dasd_setup_queue() a discipline function
        s390/dasd: Add new ioctl to release space
        s390/dasd: Add dasd_sleep_on_queue_interruptible()
        s390/dasd: Add missing intensity definition
        s390/dasd: Fix whitespace
        s390/dasd: Add dynamic formatting support for ESE volumes
        s390/dasd: Recognise data for ESE volumes
        s390/dasd: Put sub-order definitions in a separate section
        s390/dasd: Make layout analysis ESE compatible
        s390/dasd: Remove old defines and function
        ...
      aabfea8d
    • Christian Lamparter's avatar
      net: dsa: qca8k: replace legacy gpio include · f32ae8a5
      Christian Lamparter authored
      This patch replaces the legacy bulk gpio.h include
      with the proper gpio/consumer.h variant. This was
      caught by the kbuild test robot that was running
      into an error because of this.
      
      For more information why linux/gpio.h is bad can be found in:
      commit 56a46b61 ("gpio: Clarify that <linux/gpio.h> is legacy")
      Reported-by: default avatarkbuild test robot <lkp@intel.com>
      Link: https://www.spinics.net/lists/netdev/msg584447.html
      Fixes: a653f2f5 ("net: dsa: qca8k: introduce reset via gpio feature")
      Signed-off-by: default avatarChristian Lamparter <chunkeey@gmail.com>
      Reviewed-by: default avatarVivien Didelot <vivien.didelot@gmail.com>
      Reviewed-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f32ae8a5
    • Linus Torvalds's avatar
      Merge tag 'nios2-v5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2 · 7181feb9
      Linus Torvalds authored
      Pull arch/nios2 updates from Ley Foon Tan.
      
      * tag 'nios2-v5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2:
        nios2: configs: Remove useless UEVENT_HELPER_PATH
        nios2: remove pointless second entry for CONFIG_TRACE_IRQFLAGS_SUPPORT
      7181feb9
    • Jiangfeng Xiao's avatar
      net: hisilicon: Use devm_platform_ioremap_resource · 56170ba3
      Jiangfeng Xiao authored
      Use devm_platform_ioremap_resource instead of
      devm_ioremap_resource. Make the code simpler.
      Signed-off-by: default avatarJiangfeng Xiao <xiaojiangfeng@huawei.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      56170ba3
    • Arnd Bergmann's avatar
      cxgb4: reduce kernel stack usage in cudbg_collect_mem_region() · 752c2ea2
      Arnd Bergmann authored
      The cudbg_collect_mem_region() and cudbg_read_fw_mem() both use several
      hundred kilobytes of kernel stack space. One gets inlined into the other,
      which causes the stack usage to be combined beyond the warning limit
      when building with clang:
      
      drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c:1057:12: error: stack frame size of 1244 bytes in function 'cudbg_collect_mem_region' [-Werror,-Wframe-larger-than=]
      
      Restructuring cudbg_collect_mem_region() lets clang do the same
      optimization that gcc does and reuse the stack slots as it can
      see that the large variables are never used together.
      
      A better fix might be to avoid using cudbg_meminfo on the stack
      altogether, but that requires a larger rewrite.
      
      Fixes: a1c69520 ("cxgb4: collect MC memory dump")
      Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      752c2ea2
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm · 39d7530d
      Linus Torvalds authored
      Pull KVM updates from Paolo Bonzini:
       "ARM:
         - support for chained PMU counters in guests
         - improved SError handling
         - handle Neoverse N1 erratum #1349291
         - allow side-channel mitigation status to be migrated
         - standardise most AArch64 system register accesses to msr_s/mrs_s
         - fix host MPIDR corruption on 32bit
         - selftests ckleanups
      
        x86:
         - PMU event {white,black}listing
         - ability for the guest to disable host-side interrupt polling
         - fixes for enlightened VMCS (Hyper-V pv nested virtualization),
         - new hypercall to yield to IPI target
         - support for passing cstate MSRs through to the guest
         - lots of cleanups and optimizations
      
        Generic:
         - Some txt->rST conversions for the documentation"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (128 commits)
        Documentation: virtual: Add toctree hooks
        Documentation: kvm: Convert cpuid.txt to .rst
        Documentation: virtual: Convert paravirt_ops.txt to .rst
        KVM: x86: Unconditionally enable irqs in guest context
        KVM: x86: PMU Event Filter
        kvm: x86: Fix -Wmissing-prototypes warnings
        KVM: Properly check if "page" is valid in kvm_vcpu_unmap
        KVM: arm/arm64: Initialise host's MPIDRs by reading the actual register
        KVM: LAPIC: Retry tune per-vCPU timer_advance_ns if adaptive tuning goes insane
        kvm: LAPIC: write down valid APIC registers
        KVM: arm64: Migrate _elx sysreg accessors to msr_s/mrs_s
        KVM: doc: Add API documentation on the KVM_REG_ARM_WORKAROUNDS register
        KVM: arm/arm64: Add save/restore support for firmware workaround state
        arm64: KVM: Propagate full Spectre v2 workaround state to KVM guests
        KVM: arm/arm64: Support chained PMU counters
        KVM: arm/arm64: Remove pmc->bitmask
        KVM: arm/arm64: Re-create event when setting counter value
        KVM: arm/arm64: Extract duplicated code to own function
        KVM: arm/arm64: Rename kvm_pmu_{enable/disable}_counter functions
        KVM: LAPIC: ARBPRI is a reserved register for x2APIC
        ...
      39d7530d
    • Chris Packham's avatar
      tipc: ensure head->lock is initialised · d12cffe9
      Chris Packham authored
      tipc_named_node_up() creates a skb list. It passes the list to
      tipc_node_xmit() which has some code paths that can call
      skb_queue_purge() which relies on the list->lock being initialised.
      
      The spin_lock is only needed if the messages end up on the receive path
      but when the list is created in tipc_named_node_up() we don't
      necessarily know if it is going to end up there.
      
      Once all the skb list users are updated in tipc it will then be possible
      to update them to use the unlocked variants of the skb list functions
      and initialise the lock when we know the message will follow the receive
      path.
      Signed-off-by: default avatarChris Packham <chris.packham@alliedtelesis.co.nz>
      Acked-by: default avatarJon Maloy <jon.maloy@ericsson.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d12cffe9
    • Roman Mashak's avatar
      tc-tests: updated skbedit tests · 100c4043
      Roman Mashak authored
      - Added mask upper bound test case
      - Added mask validation test case
      - Added mask replacement case
      Signed-off-by: default avatarRoman Mashak <mrv@mojatatu.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      100c4043
    • David S. Miller's avatar
      Merge branch 'nfp-flower-bugs' · be4d2a5b
      David S. Miller authored
      John Hurley says:
      
      ====================
      Fix bugs in NFP flower match offload
      
      This patchset contains bug fixes for corner cases in the match fields of
      flower offloads. The patches ensure that flows that should not be
      supported are not (incorrectly) offloaded. These include rules that match
      on layer 3 and/or 4 data without specified ethernet or ip protocol fields.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      be4d2a5b
    • John Hurley's avatar
      nfp: flower: ensure ip protocol is specified for L4 matches · 103b7c25
      John Hurley authored
      Flower rules on the NFP firmware are able to match on an IP protocol
      field. When parsing rules in the driver, unknown IP protocols are only
      rejected when further matches are to be carried out on layer 4 fields, as
      the firmware will not be able to extract such fields from packets.
      
      L4 protocol dissectors such as FLOW_DISSECTOR_KEY_PORTS are only parsed if
      an IP protocol is specified. This leaves a loophole whereby a rule that
      attempts to match on transport layer information such as port numbers but
      does not explicitly give an IP protocol type can be incorrectly offloaded
      (in this case with wildcard port numbers matches).
      
      Fix this by rejecting the offload of flows that attempt to match on L4
      information, not only when matching on an unknown IP protocol type, but
      also when the protocol is wildcarded.
      
      Fixes: 2a047845 ("nfp: flower: check L4 matches on unknown IP protocols")
      Signed-off-by: default avatarJohn Hurley <john.hurley@netronome.com>
      Reviewed-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      103b7c25
    • John Hurley's avatar
      nfp: flower: fix ethernet check on match fields · fd262a6d
      John Hurley authored
      NFP firmware does not explicitly match on an ethernet type field. Rather,
      each rule has a bitmask of match fields that can be used to infer the
      ethernet type.
      
      Currently, if a flower rule contains an unknown ethernet type, a check is
      carried out for matches on other fields of the packet. If matches on
      layer 3 or 4 are found, then the offload is rejected as firmware will not
      be able to extract these fields from a packet with an ethernet type it
      does not currently understand.
      
      However, if a rule contains an unknown ethernet type without any L3 (or
      above) matches then this will effectively be offloaded as a rule with a
      wildcarded ethertype. This can lead to misclassifications on the firmware.
      
      Fix this issue by rejecting all flower rules that specify a match on an
      unknown ethernet type.
      
      Further ensure correct offloads by moving the 'L3 and above' check to any
      rule that does not specify an ethernet type and rejecting rules with
      further matches. This means that we can still offload rules with a
      wildcarded ethertype if they only match on L2 fields but will prevent
      rules which match on further fields that we cannot be sure if the firmware
      will be able to extract.
      
      Fixes: af9d842c ("nfp: extend flower add flow offload")
      Signed-off-by: default avatarJohn Hurley <john.hurley@netronome.com>
      Reviewed-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      fd262a6d
    • Linus Torvalds's avatar
      Merge tag 'hyperv-next-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux · 16c97650
      Linus Torvalds authored
      Pull hyper-v updates from Sasha Levin:
      
       - Add a module description to the Hyper-V vmbus module.
      
       - Rework some vmbus code to separate architecture specifics out to
         arch/x86/. This is part of the work of adding arm64 support to
         Hyper-V.
      
      * tag 'hyperv-next-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
        Drivers: hv: vmbus: Break out ISA independent parts of mshyperv.h
        drivers: hv: Add a module description line to the hv_vmbus driver
      16c97650
    • Vlad Buslov's avatar
      net/mlx5e: Provide cb_list pointer when setting up tc block on rep · 3929502b
      Vlad Buslov authored
      Recent refactoring of tc block offloads infrastructure introduced new
      flow_block_cb_setup_simple() method intended to be used as unified way for
      all drivers to register offload callbacks. However, commit that actually
      extended all users (drivers) with block cb list and provided it to
      flow_block infra missed mlx5 en_rep. This leads to following NULL-pointer
      dereference when creating Qdisc:
      
      [  278.385175] BUG: kernel NULL pointer dereference, address: 0000000000000000
      [  278.393233] #PF: supervisor read access in kernel mode
      [  278.399446] #PF: error_code(0x0000) - not-present page
      [  278.405847] PGD 8000000850e73067 P4D 8000000850e73067 PUD 8620cd067 PMD 0
      [  278.414141] Oops: 0000 [#1] SMP PTI
      [  278.419019] CPU: 7 PID: 3369 Comm: tc Not tainted 5.2.0-rc6+ #492
      [  278.426580] Hardware name: Supermicro SYS-2028TP-DECR/X10DRT-P, BIOS 2.0b 03/30/2017
      [  278.435853] RIP: 0010:flow_block_cb_setup_simple+0xc4/0x190
      [  278.442953] Code: 10 48 89 42 08 48 89 10 48 b8 00 01 00 00 00 00 ad de 49 89 00 48 05 00 01 00 00 49 89 40 08 31 c0 c3 b8 a1 ff ff ff c3 f3 c3 <48> 8b 06 48 39 c6 75 0a eb 1a 48 8b 00 48 39 c6 74 12
       48 3b 50 28
      [  278.464829] RSP: 0018:ffffaf07c3f97990 EFLAGS: 00010246
      [  278.471648] RAX: 0000000000000000 RBX: ffff9b43ed4c7680 RCX: ffff9b43d5f80840
      [  278.480408] RDX: ffffffffc0491650 RSI: 0000000000000000 RDI: ffffaf07c3f97998
      [  278.489110] RBP: ffff9b43ddff9000 R08: ffff9b43d5f80840 R09: 0000000000000001
      [  278.497838] R10: 0000000000000009 R11: 00000000000003ad R12: ffffaf07c3f97c08
      [  278.506595] R13: ffff9b43d5f80000 R14: ffff9b43ed4c7680 R15: ffff9b43dfa20b40
      [  278.515374] FS:  00007f796be1b400(0000) GS:ffff9b43ef840000(0000) knlGS:0000000000000000
      [  278.525099] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      [  278.532453] CR2: 0000000000000000 CR3: 0000000840398002 CR4: 00000000001606e0
      [  278.541197] Call Trace:
      [  278.545252]  tcf_block_offload_cmd.isra.52+0x7e/0xb0
      [  278.551871]  tcf_block_get_ext+0x365/0x3e0
      [  278.557569]  qdisc_create+0x15c/0x4e0
      [  278.562859]  ? kmem_cache_alloc_trace+0x1a2/0x1c0
      [  278.569235]  tc_modify_qdisc+0x1c8/0x780
      [  278.574761]  rtnetlink_rcv_msg+0x291/0x340
      [  278.580518]  ? _cond_resched+0x15/0x40
      [  278.585856]  ? rtnl_calcit.isra.29+0x120/0x120
      [  278.591868]  netlink_rcv_skb+0x4a/0x110
      [  278.597198]  netlink_unicast+0x1a0/0x250
      [  278.602601]  netlink_sendmsg+0x2c1/0x3c0
      [  278.608022]  sock_sendmsg+0x5b/0x60
      [  278.612969]  ___sys_sendmsg+0x289/0x310
      [  278.618231]  ? do_wp_page+0x99/0x730
      [  278.623216]  ? page_add_new_anon_rmap+0xbe/0x140
      [  278.629298]  ? __handle_mm_fault+0xc84/0x1360
      [  278.635113]  ? __sys_sendmsg+0x5e/0xa0
      [  278.640285]  __sys_sendmsg+0x5e/0xa0
      [  278.645239]  do_syscall_64+0x5b/0x1b0
      [  278.650274]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
      [  278.656697] RIP: 0033:0x7f796abdeb87
      [  278.661628] Code: 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 80 00 00 00 00 8b 05 6a 2b 2c 00 48 63 d2 48 63 ff 85 c0 75 18 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 59 f3 c3 0f 1f 80 00 00 00 00 53
       48 89 f3 48
      [  278.683248] RSP: 002b:00007ffde213ba48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
      [  278.692245] RAX: ffffffffffffffda RBX: 000000005d261e6f RCX: 00007f796abdeb87
      [  278.700862] RDX: 0000000000000000 RSI: 00007ffde213bab0 RDI: 0000000000000003
      [  278.709527] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000006
      [  278.718167] R10: 000000000000000c R11: 0000000000000246 R12: 0000000000000001
      [  278.726743] R13: 000000000067b580 R14: 0000000000000000 R15: 0000000000000000
      [  278.735302] Modules linked in: dummy vxlan ip6_udp_tunnel udp_tunnel sch_ingress nfsv3 nfs_acl nfs lockd grace fscache bridge stp llc sunrpc mlx5_ib ib_uverbs intel_rapl ib_core sb_edac x86_pkg_temp_
      thermal intel_powerclamp coretemp kvm_intel kvm mlx5_core irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel igb ghash_clmulni_intel ses mei_me enclosure mlxfw ipmi_ssif intel_cstate iTCO_wdt ptp mei
      pps_core iTCO_vendor_support pcspkr joydev intel_uncore i2c_i801 ipmi_si lpc_ich intel_rapl_perf ioatdma wmi dca pcc_cpufreq ipmi_devintf ipmi_msghandler acpi_power_meter acpi_pad ast i2c_algo_bit drm_k
      ms_helper ttm drm mpt3sas raid_class scsi_transport_sas
      [  278.802263] CR2: 0000000000000000
      [  278.807170] ---[ end trace b1f0a442a279e66f ]---
      
      Extend en_rep with new static mlx5e_rep_block_cb_list list and pass it to
      flow_block_cb_setup_simple() function instead of hardcoded NULL pointer.
      
      Fixes: 955bcb6e ("drivers: net: use flow block API")
      Signed-off-by: default avatarVlad Buslov <vladbu@mellanox.com>
      Acked-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      3929502b
    • Denis Efremov's avatar
      net: phy: make exported variables non-static · 54638c6e
      Denis Efremov authored
      The variables phy_basic_ports_array, phy_fibre_port_array and
      phy_all_ports_features_array are declared static and marked
      EXPORT_SYMBOL_GPL(), which is at best an odd combination.
      Because the variables were decided to be a part of API, this commit
      removes the static attributes and adds the declarations to the header.
      
      Fixes: 3c1bcc86 ("net: ethernet: Convert phydev advertize and supported from u32 to link mode")
      Signed-off-by: default avatarDenis Efremov <efremov@linux.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      54638c6e
    • Vlad Buslov's avatar
      net: sched: Fix NULL-pointer dereference in tc_indr_block_ing_cmd() · c1a970d0
      Vlad Buslov authored
      After recent refactoring of block offlads infrastructure, indr_dev->block
      pointer is dereferenced before it is verified to be non-NULL. Example stack
      trace where this behavior leads to NULL-pointer dereference error when
      creating vxlan dev on system with mlx5 NIC with offloads enabled:
      
      [ 1157.852938] ==================================================================
      [ 1157.866877] BUG: KASAN: null-ptr-deref in tc_indr_block_ing_cmd.isra.41+0x9c/0x160
      [ 1157.880877] Read of size 4 at addr 0000000000000090 by task ip/3829
      [ 1157.901637] CPU: 22 PID: 3829 Comm: ip Not tainted 5.2.0-rc6+ #488
      [ 1157.914438] Hardware name: Supermicro SYS-2028TP-DECR/X10DRT-P, BIOS 2.0b 03/30/2017
      [ 1157.929031] Call Trace:
      [ 1157.938318]  dump_stack+0x9a/0xeb
      [ 1157.948362]  ? tc_indr_block_ing_cmd.isra.41+0x9c/0x160
      [ 1157.960262]  ? tc_indr_block_ing_cmd.isra.41+0x9c/0x160
      [ 1157.972082]  __kasan_report+0x176/0x192
      [ 1157.982513]  ? tc_indr_block_ing_cmd.isra.41+0x9c/0x160
      [ 1157.994348]  kasan_report+0xe/0x20
      [ 1158.004324]  tc_indr_block_ing_cmd.isra.41+0x9c/0x160
      [ 1158.015950]  ? tcf_block_setup+0x430/0x430
      [ 1158.026558]  ? kasan_unpoison_shadow+0x30/0x40
      [ 1158.037464]  __tc_indr_block_cb_register+0x5f5/0xf20
      [ 1158.049288]  ? mlx5e_rep_indr_tc_block_unbind+0xa0/0xa0 [mlx5_core]
      [ 1158.062344]  ? tc_indr_block_dev_put.part.47+0x5c0/0x5c0
      [ 1158.074498]  ? rdma_roce_rescan_device+0x20/0x20 [ib_core]
      [ 1158.086580]  ? br_device_event+0x98/0x480 [bridge]
      [ 1158.097870]  ? strcmp+0x30/0x50
      [ 1158.107578]  mlx5e_nic_rep_netdevice_event+0xdd/0x180 [mlx5_core]
      [ 1158.120212]  notifier_call_chain+0x6d/0xa0
      [ 1158.130753]  register_netdevice+0x6fc/0x7e0
      [ 1158.141322]  ? netdev_change_features+0xa0/0xa0
      [ 1158.152218]  ? vxlan_config_apply+0x210/0x310 [vxlan]
      [ 1158.163593]  __vxlan_dev_create+0x2ad/0x520 [vxlan]
      [ 1158.174770]  ? vxlan_changelink+0x490/0x490 [vxlan]
      [ 1158.185870]  ? rcu_read_unlock+0x60/0x60 [vxlan]
      [ 1158.196798]  vxlan_newlink+0x99/0xf0 [vxlan]
      [ 1158.207303]  ? __vxlan_dev_create+0x520/0x520 [vxlan]
      [ 1158.218601]  ? rtnl_create_link+0x3d0/0x450
      [ 1158.228900]  __rtnl_newlink+0x8a7/0xb00
      [ 1158.238701]  ? stack_access_ok+0x35/0x80
      [ 1158.248450]  ? rtnl_link_unregister+0x1a0/0x1a0
      [ 1158.258735]  ? find_held_lock+0x6d/0xd0
      [ 1158.268379]  ? is_bpf_text_address+0x67/0xf0
      [ 1158.278330]  ? lock_acquire+0xc1/0x1f0
      [ 1158.287686]  ? is_bpf_text_address+0x5/0xf0
      [ 1158.297449]  ? is_bpf_text_address+0x86/0xf0
      [ 1158.307310]  ? kernel_text_address+0xec/0x100
      [ 1158.317155]  ? arch_stack_walk+0x92/0xe0
      [ 1158.326497]  ? __kernel_text_address+0xe/0x30
      [ 1158.336213]  ? unwind_get_return_address+0x2f/0x50
      [ 1158.346267]  ? create_prof_cpu_mask+0x20/0x20
      [ 1158.355936]  ? arch_stack_walk+0x92/0xe0
      [ 1158.365117]  ? stack_trace_save+0x8a/0xb0
      [ 1158.374272]  ? stack_trace_consume_entry+0x80/0x80
      [ 1158.384226]  ? match_held_lock+0x33/0x210
      [ 1158.393216]  ? kasan_unpoison_shadow+0x30/0x40
      [ 1158.402593]  rtnl_newlink+0x53/0x80
      [ 1158.410925]  rtnetlink_rcv_msg+0x3a5/0x600
      [ 1158.419777]  ? validate_linkmsg+0x400/0x400
      [ 1158.428620]  ? find_held_lock+0x6d/0xd0
      [ 1158.437117]  ? match_held_lock+0x1b/0x210
      [ 1158.445760]  ? validate_linkmsg+0x400/0x400
      [ 1158.454642]  netlink_rcv_skb+0xc7/0x1f0
      [ 1158.463150]  ? netlink_ack+0x470/0x470
      [ 1158.471538]  ? netlink_deliver_tap+0x1f3/0x5a0
      [ 1158.480607]  netlink_unicast+0x2ae/0x350
      [ 1158.489099]  ? netlink_attachskb+0x340/0x340
      [ 1158.497935]  ? _copy_from_iter_full+0xde/0x3b0
      [ 1158.506945]  ? __virt_addr_valid+0xb6/0xf0
      [ 1158.515578]  ? __check_object_size+0x159/0x240
      [ 1158.524515]  netlink_sendmsg+0x4d3/0x630
      [ 1158.532879]  ? netlink_unicast+0x350/0x350
      [ 1158.541400]  ? netlink_unicast+0x350/0x350
      [ 1158.549805]  sock_sendmsg+0x94/0xa0
      [ 1158.557561]  ___sys_sendmsg+0x49d/0x570
      [ 1158.565625]  ? copy_msghdr_from_user+0x210/0x210
      [ 1158.574457]  ? __fput+0x1e2/0x330
      [ 1158.581948]  ? __kasan_slab_free+0x130/0x180
      [ 1158.590407]  ? kmem_cache_free+0xb6/0x2d0
      [ 1158.598574]  ? mark_lock+0xc7/0x790
      [ 1158.606177]  ? task_work_run+0xcf/0x100
      [ 1158.614165]  ? exit_to_usermode_loop+0x102/0x110
      [ 1158.622954]  ? __lock_acquire+0x963/0x1ee0
      [ 1158.631199]  ? lockdep_hardirqs_on+0x260/0x260
      [ 1158.639777]  ? match_held_lock+0x1b/0x210
      [ 1158.647918]  ? lockdep_hardirqs_on+0x260/0x260
      [ 1158.656501]  ? match_held_lock+0x1b/0x210
      [ 1158.664643]  ? __fget_light+0xa6/0xe0
      [ 1158.672423]  ? __sys_sendmsg+0xd2/0x150
      [ 1158.680334]  __sys_sendmsg+0xd2/0x150
      [ 1158.688063]  ? __ia32_sys_shutdown+0x30/0x30
      [ 1158.696435]  ? lock_downgrade+0x2e0/0x2e0
      [ 1158.704541]  ? mark_held_locks+0x1a/0x90
      [ 1158.712611]  ? mark_held_locks+0x1a/0x90
      [ 1158.720619]  ? do_syscall_64+0x1e/0x2c0
      [ 1158.728530]  do_syscall_64+0x78/0x2c0
      [ 1158.736254]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
      [ 1158.745414] RIP: 0033:0x7f62d505cb87
      [ 1158.753070] Code: 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 80 00 00 00 00 8b 05 6a 2b 2c 00 48 63 d2 48 63 ff 85 c0 75 18 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 59 f3 c3 0f 1f 80 00 00[87/1817]
       48 89 f3 48
      [ 1158.780924] RSP: 002b:00007fffd9832268 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
      [ 1158.793204] RAX: ffffffffffffffda RBX: 000000005d26048f RCX: 00007f62d505cb87
      [ 1158.805111] RDX: 0000000000000000 RSI: 00007fffd98322d0 RDI: 0000000000000003
      [ 1158.817055] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000006
      [ 1158.828987] R10: 00007f62d50ce260 R11: 0000000000000246 R12: 0000000000000001
      [ 1158.840909] R13: 000000000067e540 R14: 0000000000000000 R15: 000000000067ed20
      [ 1158.852873] ==================================================================
      
      Introduce new function tcf_block_non_null_shared() that verifies block
      pointer before dereferencing it to obtain index. Use the function in
      tc_indr_block_ing_cmd() to prevent NULL pointer dereference.
      
      Fixes: 955bcb6e ("drivers: net: use flow block API")
      Signed-off-by: default avatarVlad Buslov <vladbu@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c1a970d0
    • Arnd Bergmann's avatar
      davinci_cpdma: don't cast dma_addr_t to pointer · c653f61a
      Arnd Bergmann authored
      dma_addr_t may be 64-bit wide on 32-bit architectures, so it is not
      valid to cast between it and a pointer:
      
      drivers/net/ethernet/ti/davinci_cpdma.c: In function 'cpdma_chan_submit_si':
      drivers/net/ethernet/ti/davinci_cpdma.c:1047:12: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
      drivers/net/ethernet/ti/davinci_cpdma.c: In function 'cpdma_chan_idle_submit_mapped':
      drivers/net/ethernet/ti/davinci_cpdma.c:1114:12: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
      drivers/net/ethernet/ti/davinci_cpdma.c: In function 'cpdma_chan_submit_mapped':
      drivers/net/ethernet/ti/davinci_cpdma.c:1164:12: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
      
      Solve this by using two separate members in 'struct submit_info'.
      Since this avoids the use of the 'flag' member, the structure does
      not even grow in typical configurations.
      
      Fixes: 6670acac ("net: ethernet: ti: davinci_cpdma: add dma mapped submit")
      Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
      Reviewed-by: default avatarIvan Khoronzhuk <ivan.khoronzhuk@linaro.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c653f61a