1. 02 Jan, 2018 8 commits
    • Christoffer Dall's avatar
      KVM: arm/arm64: Support VGIC dist pend/active changes for mapped IRQs · df635c5b
      Christoffer Dall authored
      For mapped IRQs (with the HW bit set in the LR) we have to follow some
      rules of the architecture.  One of these rules is that VM must not be
      allowed to deactivate a virtual interrupt with the HW bit set unless the
      physical interrupt is also active.
      
      This works fine when injecting mapped interrupts, because we leave it up
      to the injector to either set EOImode==1 or manually set the active
      state of the physical interrupt.
      
      However, the guest can set virtual interrupt to be pending or active by
      writing to the virtual distributor, which could lead to deactivating a
      virtual interrupt with the HW bit set without the physical interrupt
      being active.
      
      We could set the physical interrupt to active whenever we are about to
      enter the VM with a HW interrupt either pending or active, but that
      would be really slow, especially on GICv2.  So we take the long way
      around and do the hard work when needed, which is expected to be
      extremely rare.
      
      When the VM sets the pending state for a HW interrupt on the virtual
      distributor we set the active state on the physical distributor, because
      the virtual interrupt can become active and then the guest can
      deactivate it.
      
      When the VM clears the pending state we also clear it on the physical
      side, because the injector might otherwise raise the interrupt.  We also
      clear the physical active state when the virtual interrupt is not
      active, since otherwise a SPEND/CPEND sequence from the guest would
      prevent signaling of future interrupts.
      
      Changing the state of mapped interrupts from userspace is not supported,
      and it's expected that userspace unmaps devices from VFIO before
      attempting to set the interrupt state, because the interrupt state is
      driven by hardware.
      Reviewed-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
      Reviewed-by: default avatarEric Auger <eric.auger@redhat.com>
      Signed-off-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
      df635c5b
    • Christoffer Dall's avatar
      KVM: arm/arm64: Support a vgic interrupt line level sample function · b6909a65
      Christoffer Dall authored
      The GIC sometimes need to sample the physical line of a mapped
      interrupt.  As we know this to be notoriously slow, provide a callback
      function for devices (such as the timer) which can do this much faster
      than talking to the distributor, for example by comparing a few
      in-memory values.  Fall back to the good old method of poking the
      physical GIC if no callback is provided.
      Reviewed-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
      Reviewed-by: default avatarEric Auger <eric.auger@redhat.com>
      Signed-off-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
      b6909a65
    • Christoffer Dall's avatar
      KVM: arm/arm64: vgic: Support level-triggered mapped interrupts · e40cc57b
      Christoffer Dall authored
      Level-triggered mapped IRQs are special because we only observe rising
      edges as input to the VGIC, and we don't set the EOI flag and therefore
      are not told when the level goes down, so that we can re-queue a new
      interrupt when the level goes up.
      
      One way to solve this problem is to side-step the logic of the VGIC and
      special case the validation in the injection path, but it has the
      unfortunate drawback of having to peak into the physical GIC state
      whenever we want to know if the interrupt is pending on the virtual
      distributor.
      
      Instead, we can maintain the current semantics of a level triggered
      interrupt by sort of treating it as an edge-triggered interrupt,
      following from the fact that we only observe an asserting edge.  This
      requires us to be a bit careful when populating the LRs and when folding
      the state back in though:
      
       * We lower the line level when populating the LR, so that when
         subsequently observing an asserting edge, the VGIC will do the right
         thing.
      
       * If the guest never acked the interrupt while running (for example if
         it had masked interrupts at the CPU level while running), we have
         to preserve the pending state of the LR and move it back to the
         line_level field of the struct irq when folding LR state.
      
         If the guest never acked the interrupt while running, but changed the
         device state and lowered the line (again with interrupts masked) then
         we need to observe this change in the line_level.
      
         Both of the above situations are solved by sampling the physical line
         and set the line level when folding the LR back.
      
       * Finally, if the guest never acked the interrupt while running and
         sampling the line reveals that the device state has changed and the
         line has been lowered, we must clear the physical active state, since
         we will otherwise never be told when the interrupt becomes asserted
         again.
      
      This has the added benefit of making the timer optimization patches
      (https://lists.cs.columbia.edu/pipermail/kvmarm/2017-July/026343.html) a
      bit simpler, because the timer code doesn't have to clear the active
      state on the sync anymore.  It also potentially improves the performance
      of the timer implementation because the GIC knows the state or the LR
      and only needs to clear the
      active state when the pending bit in the LR is still set, where the
      timer has to always clear it when returning from running the guest with
      an injected timer interrupt.
      Reviewed-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
      Reviewed-by: default avatarEric Auger <eric.auger@redhat.com>
      Signed-off-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
      e40cc57b
    • Christoffer Dall's avatar
      KVM: arm/arm64: Don't cache the timer IRQ level · 70450a9f
      Christoffer Dall authored
      The timer logic was designed after a strict idea of modeling an
      interrupt line level in software, meaning that only transitions in the
      level need to be reported to the VGIC.  This works well for the timer,
      because the arch timer code is in complete control of the device and can
      track the transitions of the line.
      
      However, as we are about to support using the HW bit in the VGIC not
      just for the timer, but also for VFIO which cannot track transitions of
      the interrupt line, we have to decide on an interface between the GIC
      and other subsystems for level triggered mapped interrupts, which both
      the timer and VFIO can use.
      
      VFIO only sees an asserting transition of the physical interrupt line,
      and tells the VGIC when that happens.  That means that part of the
      interrupt flow is offloaded to the hardware.
      
      To use the same interface for VFIO devices and the timer, we therefore
      have to change the timer (we cannot change VFIO because it doesn't know
      the details of the device it is assigning to a VM).
      
      Luckily, changing the timer is simple, we just need to stop 'caching'
      the line level, but instead let the VGIC know the state of the timer
      every time there is a potential change in the line level, and when the
      line level should be asserted from the timer ISR.  The VGIC can ignore
      extra notifications using its validate mechanism.
      Reviewed-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
      Reviewed-by: default avatarAndre Przywara <andre.przywara@arm.com>
      Reviewed-by: default avatarJulien Thierry <julien.thierry@arm.com>
      Signed-off-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
      70450a9f
    • Christoffer Dall's avatar
      KVM: arm/arm64: Factor out functionality to get vgic mmio requester_vcpu · 6c1b7521
      Christoffer Dall authored
      We are about to distinguish between userspace accesses and mmio traps
      for a number of the mmio handlers.  When the requester vcpu is NULL, it
      means we are handling a userspace access.
      
      Factor out the functionality to get the request vcpu into its own
      function, mostly so we have a common place to document the semantics of
      the return value.
      
      Also take the chance to move the functionality outside of holding a
      spinlock and instead explicitly disable and enable preemption.  This
      supports PREEMPT_RT kernels as well.
      Acked-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
      Reviewed-by: default avatarAndre Przywara <andre.przywara@arm.com>
      Signed-off-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
      6c1b7521
    • Christoffer Dall's avatar
      KVM: arm/arm64: Remove redundant preemptible checks · 5a245750
      Christoffer Dall authored
      The __this_cpu_read() and __this_cpu_write() functions already implement
      checks for the required preemption levels when using
      CONFIG_DEBUG_PREEMPT which gives you nice error messages and such.
      Therefore there is no need to explicitly check this using a BUG_ON() in
      the code (which we don't do for other uses of per cpu variables either).
      Acked-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
      Reviewed-by: default avatarAndre Przywara <andre.przywara@arm.com>
      Signed-off-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
      5a245750
    • Vasyl Gomonovych's avatar
      KVM: arm: Use PTR_ERR_OR_ZERO() · 4404b336
      Vasyl Gomonovych authored
      Fix ptr_ret.cocci warnings:
      virt/kvm/arm/vgic/vgic-its.c:971:1-3: WARNING: PTR_ERR_OR_ZERO can be used
      
      Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR
      
      Generated by: scripts/coccinelle/api/ptr_ret.cocci
      Signed-off-by: default avatarVasyl Gomonovych <gomonovych@gmail.com>
      Signed-off-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
      4404b336
    • Andrew Jones's avatar
      arm64: KVM: Hide PMU from guests when disabled · 0c0543a1
      Andrew Jones authored
      Since commit 93390c0a ("arm64: KVM: Hide unsupported AArch64 CPU
      features from guests") we can hide cpu features from guests. Apply
      this to a long standing issue where guests see a PMU available, but
      it's not, because it was not enabled by KVM's userspace.
      Signed-off-by: default avatarAndrew Jones <drjones@redhat.com>
      Signed-off-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
      0c0543a1
  2. 11 Dec, 2017 1 commit
  3. 10 Dec, 2017 9 commits
    • Jeff Layton's avatar
      hpfs: don't bother with the i_version counter or f_version · 98087c05
      Jeff Layton authored
      HPFS does not set SB_I_VERSION and does not use the i_version counter
      internally.
      Signed-off-by: default avatarJeff Layton <jlayton@redhat.com>
      Signed-off-by: default avatarMikulas Patocka <mikulas@twibright.com>
      Reviewed-by: default avatarMikulas Patocka <mikulas@twibright.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      98087c05
    • Jiri Slaby's avatar
      futex: futex_wake_op, fix sign_extend32 sign bits · d70ef228
      Jiri Slaby authored
      sign_extend32 counts the sign bit parameter from 0, not from 1.  So we
      have to use "11" for 12th bit, not "12".
      
      This mistake means we have not allowed negative op and cmp args since
      commit 30d6e0a4 ("futex: Remove duplicated code and fix undefined
      behaviour") till now.
      
      Fixes: 30d6e0a4 ("futex: Remove duplicated code and fix undefined behaviour")
      Signed-off-by: default avatarJiri Slaby <jslaby@suse.cz>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Darren Hart <dvhart@infradead.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      d70ef228
    • Linus Torvalds's avatar
      Merge tag 'for-4.15-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux · 51090c5d
      Linus Torvalds authored
      Pull btrfs fixes from David Sterba:
       "This contains a few fixes (error handling, quota leak, FUA vs
        nobarrier mount option).
      
        There's one one worth mentioning separately - an off-by-one fix that
        leads to overwriting first byte of an adjacent page with 0, out of
        bounds of the memory allocated by an ioctl. This is under a privileged
        part of the ioctl, can be triggerd in some subvolume layouts"
      
      * tag 'for-4.15-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
        btrfs: Fix possible off-by-one in btrfs_search_path_in_tree
        Btrfs: disable FUA if mounted with nobarrier
        btrfs: fix missing error return in btrfs_drop_snapshot
        btrfs: handle errors while updating refcounts in update_ref_for_cow
        btrfs: Fix quota reservation leak on preallocated files
      51090c5d
    • Linus Torvalds's avatar
      Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc · 9c02e060
      Linus Torvalds authored
      Pull ARM SoC fixes from Olof Johansson:
      
       - A revert of all SCPI changes from the 4.15 merge window. They had
         regressions on the Amlogic platforms, and the submaintainer isn't
         around to fix these bugs due to vacation, etc. So we agreed to revert
         and revisit in next release cycle.
      
       - A series fixing a number of bugs for ARM CCN interconnect, around
         module unload, smp_processor_id() in preemptable context, and fixing
         some memory allocation failure checks.
      
       - A handful of devicetree fixes for different platforms, fixing
         warnings and errors that were previously ignored by the compiler.
      
       - The usual set of mostly minor fixes for different platforms.
      
      * tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (42 commits)
        ARM64: dts: meson-gx: fix UART pclk clock name
        ARM: omap2: hide omap3_save_secure_ram on non-OMAP3 builds
        arm: dts: nspire: Add missing #phy-cells to usb-nop-xceiv
        ARM: dts: Fix dm814x missing phy-cells property
        ARM: dts: Fix elm interrupt compiler warning
        bus: arm-ccn: fix module unloading Error: Removing state 147 which has instances left.
        bus: arm-cci: Fix use of smp_processor_id() in preemptible context
        bus: arm-ccn: Fix use of smp_processor_id() in preemptible context
        bus: arm-ccn: Simplify code
        bus: arm-ccn: Check memory allocation failure
        bus: arm-ccn: constify attribute_group structures.
        firmware: arm_scpi: Revert updates made during v4.15 merge window
        arm: dts: marvell: Add missing #phy-cells to usb-nop-xceiv
        arm64: dts: sort vendor subdirectories in Makefile alphabetically
        meson-gx-socinfo: Fix package id parsing
        ARM: meson: fix spelling mistake: "Couln't" -> "Couldn't"
        ARM: dts: meson: fix the memory region of the GPIO interrupt controller
        ARM: dts: meson: correct the sort order for the the gpio_intc node
        MAINTAINERS: exclude other Socionext SoC DT files from ARM/UNIPHIER entry
        arm64: dts: uniphier: remove unnecessary interrupt-parent
        ...
      9c02e060
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm · c465fc11
      Linus Torvalds authored
      Pull KVM fixes from Radim Krčmář:
       "ARM:
         - A number of issues in the vgic discovered using SMATCH
         - A bit one-off calculation in out stage base address mask (32-bit
           and 64-bit)
         - Fixes to single-step debugging instructions that trap for other
           reasons such as MMMIO aborts
         - Printing unavailable hyp mode as error
         - Potential spinlock deadlock in the vgic
         - Avoid calling vgic vcpu free more than once
         - Broken bit calculation for big endian systems
      
       s390:
         - SPDX tags
         - Fence storage key accesses from problem state
         - Make sure that irq_state.flags is not used in the future
      
        x86:
         - Intercept port 0x80 accesses to prevent host instability (CVE)
         - Use userspace FPU context for guest FPU (mainly an optimization
           that fixes a double use of kernel FPU)
         - Do not leak one page per module load
         - Flush APIC page address cache from MMU invalidation notifiers"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (28 commits)
        KVM: x86: fix APIC page invalidation
        KVM: s390: Fix skey emulation permission check
        KVM: s390: mark irq_state.flags as non-usable
        KVM: s390: Remove redundant license text
        KVM: s390: add SPDX identifiers to the remaining files
        KVM: VMX: fix page leak in hardware_setup()
        KVM: VMX: remove I/O port 0x80 bypass on Intel hosts
        x86,kvm: remove KVM emulator get_fpu / put_fpu
        x86,kvm: move qemu/guest FPU switching out to vcpu_run
        KVM: arm/arm64: Fix broken GICH_ELRSR big endian conversion
        KVM: arm/arm64: kvm_arch_destroy_vm cleanups
        KVM: arm/arm64: Fix spinlock acquisition in vgic_set_owner
        kvm: arm: don't treat unavailable HYP mode as an error
        KVM: arm/arm64: Avoid attempting to load timer vgic state without a vgic
        kvm: arm64: handle single-step of hyp emulated mmio instructions
        kvm: arm64: handle single-step during SError exceptions
        kvm: arm64: handle single-step of userspace mmio instructions
        kvm: arm64: handle single-stepping trapped instructions
        KVM: arm/arm64: debug: Introduce helper for single-step
        arm: KVM: Fix VTTBR_BADDR_MASK BUG_ON off-by-one
        ...
      c465fc11
    • Olof Johansson's avatar
      Merge branch 'fixes' into for-next · 8be0b988
      Olof Johansson authored
      * fixes:
        ARM64: dts: meson-gx: fix UART pclk clock name
        ARM: dts: Fix dm814x missing phy-cells property
        ARM: dts: Fix elm interrupt compiler warning
        bus: arm-ccn: fix module unloading Error: Removing state 147 which has instances left.
        bus: arm-cci: Fix use of smp_processor_id() in preemptible context
        bus: arm-ccn: Fix use of smp_processor_id() in preemptible context
        bus: arm-ccn: Simplify code
        bus: arm-ccn: Check memory allocation failure
        bus: arm-ccn: constify attribute_group structures.
        meson-gx-socinfo: Fix package id parsing
        ARM: meson: fix spelling mistake: "Couln't" -> "Couldn't"
        ARM: dts: meson: fix the memory region of the GPIO interrupt controller
        ARM: dts: meson: correct the sort order for the the gpio_intc node
      8be0b988
    • Olof Johansson's avatar
      Merge tag 'amlogic-fixes-1' of... · ce39882e
      Olof Johansson authored
      Merge tag 'amlogic-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic into fixes
      
      Amlogic fixes for v4.15-rc
      - GPIO interrupt fixes
      - socinfo fix for GX series
      - fix typo
      
      * tag 'amlogic-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic:
        ARM64: dts: meson-gx: fix UART pclk clock name
        meson-gx-socinfo: Fix package id parsing
        ARM: meson: fix spelling mistake: "Couln't" -> "Couldn't"
        ARM: dts: meson: fix the memory region of the GPIO interrupt controller
        ARM: dts: meson: correct the sort order for the the gpio_intc node
      Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
      ce39882e
    • Olof Johansson's avatar
      Merge tag 'ccn/fixes-for-4.15' of git://git.linaro.org/people/pawel.moll/linux into fixes · 3dda7f63
      Olof Johansson authored
      bus: ARM CCN and CCI PMU driver fixes
      
      This is a bunch of fixes CCN and (guest starring this time) CCI drivers.
      
      * Check for potential of failed allocation for the driver name string
      * Manage CPU ID properly at allocation (both CCN and CCI)
      * Fix module unload warnings related to objects release order
      * Small improvements like using allocating printfs and proper
        attributes constification
      
      The one fixing potential issues have been cc-ed to stable.
      
      * tag 'ccn/fixes-for-4.15' of git://git.linaro.org/people/pawel.moll/linux:
        bus: arm-ccn: fix module unloading Error: Removing state 147 which has instances left.
        bus: arm-cci: Fix use of smp_processor_id() in preemptible context
        bus: arm-ccn: Fix use of smp_processor_id() in preemptible context
        bus: arm-ccn: Simplify code
        bus: arm-ccn: Check memory allocation failure
        bus: arm-ccn: constify attribute_group structures.
      Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
      3dda7f63
    • Olof Johansson's avatar
      Merge tag 'omap-for-v4.15/fixes-dt-warnings' of... · 69b8df5d
      Olof Johansson authored
      Merge tag 'omap-for-v4.15/fixes-dt-warnings' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
      
      Two fixes for dts compiler warnings
      
      These recently started showing up with better dtc checks being
      introduced.
      
      * tag 'omap-for-v4.15/fixes-dt-warnings' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
        ARM: dts: Fix dm814x missing phy-cells property
        ARM: dts: Fix elm interrupt compiler warning
      Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
      69b8df5d
  4. 09 Dec, 2017 1 commit
  5. 08 Dec, 2017 21 commits
    • Michal Hocko's avatar
      kmemcheck: rip it out for real · f335195a
      Michal Hocko authored
      Commit 4675ff05 ("kmemcheck: rip it out") has removed the code but
      for some reason SPDX header stayed in place.  This looks like a rebase
      mistake in the mmotm tree or the merge mistake.  Let's drop those
      leftovers as well.
      Signed-off-by: default avatarMichal Hocko <mhocko@suse.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      f335195a
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · e9ef1fe3
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) CAN fixes from Martin Kelly (cancel URBs properly in all the CAN usb
          drivers).
      
       2) Revert returning -EEXIST from __dev_alloc_name() as this propagates
          to userspace and broke some apps. From Johannes Berg.
      
       3) Fix conn memory leaks and crashes in TIPC, from Jon Malloc and Cong
          Wang.
      
       4) Gianfar MAC can't do EEE so don't advertise it by default, from
          Claudiu Manoil.
      
       5) Relax strict netlink attribute validation, but emit a warning. From
          David Ahern.
      
       6) Fix regression in checksum offload of thunderx driver, from Florian
          Westphal.
      
       7) Fix UAPI bpf issues on s390, from Hendrik Brueckner.
      
       8) New card support in iwlwifi, from Ihab Zhaika.
      
       9) BBR congestion control bug fixes from Neal Cardwell.
      
      10) Fix port stats in nfp driver, from Pieter Jansen van Vuuren.
      
      11) Fix leaks in qualcomm rmnet, from Subash Abhinov Kasiviswanathan.
      
      12) Fix DMA API handling in sh_eth driver, from Thomas Petazzoni.
      
      13) Fix spurious netpoll warnings in bnxt_en, from Calvin Owens.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (67 commits)
        net: mvpp2: fix the RSS table entry offset
        tcp: evaluate packet losses upon RTT change
        tcp: fix off-by-one bug in RACK
        tcp: always evaluate losses in RACK upon undo
        tcp: correctly test congestion state in RACK
        bnxt_en: Fix sources of spurious netpoll warnings
        tcp_bbr: reset long-term bandwidth sampling on loss recovery undo
        tcp_bbr: reset full pipe detection on loss recovery undo
        tcp_bbr: record "full bw reached" decision in new full_bw_reached bit
        sfc: pass valid pointers from efx_enqueue_unwind
        gianfar: Disable EEE autoneg by default
        tcp: invalidate rate samples during SACK reneging
        can: peak/pcie_fd: fix potential bug in restarting tx queue
        can: usb_8dev: cancel urb on -EPIPE and -EPROTO
        can: kvaser_usb: cancel urb on -EPIPE and -EPROTO
        can: esd_usb2: cancel urb on -EPIPE and -EPROTO
        can: ems_usb: cancel urb on -EPIPE and -EPROTO
        can: mcba_usb: cancel urb on -EPROTO
        usbnet: fix alignment for frames with no ethernet header
        tcp: use current time in tcp_rcv_space_adjust()
        ...
      e9ef1fe3
    • Linus Torvalds's avatar
      Merge tag 'media/v4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media · 77071bc6
      Linus Torvalds authored
      Pull media fixes from Mauro Carvalho Chehab:
      
       "A series of fixes for the media subsytem:
      
         - The largest amount of fixes in this series is with regards to
           comments that aren't kernel-doc, but start with "/**".
      
           A new check added for 4.15 makes it to produce a *huge* amount of
           new warnings (I'm compiling here with W=1). Most of the patches in
           this series fix those.
      
           No code changes - just comment changes at the source files
      
         - rc: some fixed in order to better handle RC repetition codes
      
         - v4l-async: use the v4l2_dev from the root notifier when matching
           sub-devices
      
         - v4l2-fwnode: Check subdev count after checking port
      
         - ov 13858 and et8ek8: compilation fix with randconfigs
      
         - usbtv: a trivial new USB ID addition
      
         - dibusb-common: don't do DMA on stack on firmware load
      
         - imx274: Fix error handling, add MAINTAINERS entry
      
         - sir_ir: detect presence of port"
      
      * tag 'media/v4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (50 commits)
        media: imx274: Fix error handling, add MAINTAINERS entry
        media: v4l: async: use the v4l2_dev from the root notifier when matching sub-devices
        media: v4l2-fwnode: Check subdev count after checking port
        media: et8ek8: select V4L2_FWNODE
        media: ov13858: Select V4L2_FWNODE
        media: rc: partial revert of "media: rc: per-protocol repeat period"
        media: dvb: i2c transfers over usb cannot be done from stack
        media: dvb-frontends: complete kernel-doc markups
        media: docs: add documentation for frontend attach info
        media: dvb_frontends: fix kernel-doc macros
        media: drivers: remove "/**" from non-kernel-doc comments
        media: lm3560: add a missing kernel-doc parameter
        media: rcar_jpu: fix two kernel-doc markups
        media: vsp1: add a missing kernel-doc parameter
        media: soc_camera: fix a kernel-doc markup
        media: mt2063: fix some kernel-doc warnings
        media: radio-wl1273: fix a parameter name at kernel-doc macro
        media: s3c-camif: add missing description at s3c_camif_find_format()
        media: mtk-vpu: add description for wdt fields at struct mtk_vpu
        media: vdec: fix some kernel-doc warnings
        ...
      77071bc6
    • Linus Torvalds's avatar
      Merge tag 'drm-fixes-for-v4.15-rc3' of git://people.freedesktop.org/~airlied/linux · 4066aa72
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "This pull is a bit larger than I'd like but a large bunch of it is
        license fixes, AMD wanted to fix the licenses for a bunch of files
        that were missing them,
      
       Otherwise a bunch of TTM regression fix since the hugepage support,
       some i915 and gvt fixes, a core connector free in a safe context fix,
       and one bridge fix"
      
      * tag 'drm-fixes-for-v4.15-rc3' of git://people.freedesktop.org/~airlied/linux: (26 commits)
        drm/bridge: analogix dp: Fix runtime PM state in get_modes() callback
        Revert "drm/i915: Display WA #1133 WaFbcSkipSegments:cnl, glk"
        drm/vc4: Fix false positive WARN() backtrace on refcount_inc() usage
        drm/i915: Call i915_gem_init_userptr() before taking struct_mutex
        drm/exynos: remove unnecessary function declaration
        drm/exynos: remove unnecessary descrptions
        drm/exynos: gem: Drop NONCONTIG flag for buffers allocated without IOMMU
        drm/exynos: Fix dma-buf import
        drm/ttm: swap consecutive allocated pooled pages v4
        drm: safely free connectors from connector_iter
        drm/i915/gvt: set max priority for gvt context
        drm/i915/gvt: Don't mark vgpu context as inactive when preempted
        drm/i915/gvt: Limit read hw reg to active vgpu
        drm/i915/gvt: Export intel_gvt_render_mmio_to_ring_id()
        drm/i915/gvt: Emulate PCI expansion ROM base address register
        drm/ttm: swap consecutive allocated cached pages v3
        drm/ttm: roundup the shrink request to prevent skip huge pool
        drm/ttm: add page order support in ttm_pages_put
        drm/ttm: add set_pages_wb for handling page order more than zero
        drm/ttm: add page order in page pool
        ...
      4066aa72
    • Linus Torvalds's avatar
      Merge tag 'md/4.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md · 7267212c
      Linus Torvalds authored
      Pull md fixes from Shaohua Li:
       "Some MD fixes.
      
        The notable one is a raid5-cache deadlock bug with dm-raid, others are
        not significant"
      
      * tag 'md/4.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
        md/raid1/10: add missed blk plug
        md: limit mdstat resync progress to max_sectors
        md/r5cache: move mddev_lock() out of r5c_journal_mode_set()
        md/raid5: correct degraded calculation in raid5_error
      7267212c
    • Linus Torvalds's avatar
      Merge tag 'devicetree-fixes-for-4.15-part2' of... · 78d9b048
      Linus Torvalds authored
      Merge tag 'devicetree-fixes-for-4.15-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
      
      Pull DeviceTree fixes from Rob Herring:
       "Another set of DT fixes:
      
         - Fixes from overlay code rework. A trifecta of fixes to the locking,
           an out of bounds access, and a memory leak in of_overlay_apply()
      
         - Clean-up at25 eeprom binding document
      
         - Remove leading '0x' in unit-addresses from binding docs"
      
      * tag 'devicetree-fixes-for-4.15-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
        of: overlay: Make node skipping in init_overlay_changeset() clearer
        of: overlay: Fix out-of-bounds write in init_overlay_changeset()
        of: overlay: Fix (un)locking in of_overlay_apply()
        of: overlay: Fix memory leak in of_overlay_apply() error path
        dt-bindings: eeprom: at25: Document device-specific compatible values
        dt-bindings: eeprom: at25: Grammar s/are can/can/
        dt-bindings: Remove leading 0x from bindings notation
        of: overlay: Remove else after goto
        of: Spelling s/changset/changeset/
        of: unittest: Remove bogus overlay mutex release from overlay_data_add()
      78d9b048
    • Linus Torvalds's avatar
      Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost · 900add27
      Linus Torvalds authored
      Pull virtio bugfixes from Michael Tsirkin:
       "A couple of minor bugfixes"
      
      * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
        virtio_net: fix return value check in receive_mergeable()
        virtio_mmio: add cleanup for virtio_mmio_remove
        virtio_mmio: add cleanup for virtio_mmio_probe
      900add27
    • Linus Torvalds's avatar
      Merge tag 'for-linus-4.15-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip · 32abeb09
      Linus Torvalds authored
      Pull xen fixes from Juergen Gross:
       "Just two small fixes for the new pvcalls frontend driver"
      
      * tag 'for-linus-4.15-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
        xen/pvcalls: Fix a check in pvcalls_front_remove()
        xen/pvcalls: check for xenbus_read() errors
      32abeb09
    • Linus Torvalds's avatar
      Merge tag 'powerpc-4.15-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · d90696ed
      Linus Torvalds authored
      Pull powerpc fixes from Michael Ellerman:
      
       "One notable fix for kexec on Power9, where we were not clearing MMU
        PID properly which sometimes leads to hangs. Finally debugged to a
        root cause by Nick.
      
        A revert of a patch which tried to rework our panic handling to get
        more output on the console, but inadvertently broke reporting the
        panic to the hypervisor, which apparently people care about.
      
        Then a fix for an oops in the PMU code, and finally some s/%p/%px/ in
        xmon.
      
        Thanks to: David Gibson, Nicholas Piggin, Ravi Bangoria"
      
      * tag 'powerpc-4.15-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
        powerpc/xmon: Don't print hashed pointers in xmon
        powerpc/64s: Initialize ISAv3 MMU registers before setting partition table
        Revert "powerpc: Do not call ppc_md.panic in fadump panic notifier"
        powerpc/perf: Fix oops when grouping different pmu events
      d90696ed
    • David S. Miller's avatar
      Merge tag 'linux-can-fixes-for-4.15-20171208' of... · fd29117a
      David S. Miller authored
      Merge tag 'linux-can-fixes-for-4.15-20171208' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
      
      Marc Kleine-Budde says:
      
      ====================
      pull-request: can 2017-12-08
      
      this is a pull request of 6 patches for net/master.
      
      Martin Kelly provides 5 patches for various USB based CAN drivers, that
      properly cancel the URBs on adapter unplug, so that the driver doesn't
      end up in an endless loop. Stephane Grosjean provides a patch to restart
      the tx queue if zero length packages are transmitted.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      fd29117a
    • David S. Miller's avatar
      Merge tag 'wireless-drivers-for-davem-2017-12-08' of... · 03afb6e4
      David S. Miller authored
      Merge tag 'wireless-drivers-for-davem-2017-12-08' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers
      
      Kalle Valo says:
      
      ====================
      wireless-drivers fixes for 4.15
      
      Second set of fixes for 4.15. This time a lot of iwlwifi patches and
      two brcmfmac patches. Most important here are the MIC and IVC fixes
      for iwlwifi to unbreak 9000 series.
      
      iwlwifi
      
      * fix rate-scaling to not start lowest possible rate
      
      * fix the TX queue hang detection for AP/GO modes
      
      * fix the TX queue hang timeout in monitor interfaces
      
      * fix packet injection
      
      * remove a wrong error message when dumping PCI registers
      
      * fix race condition with RF-kill
      
      * tell mac80211 when the MIC has been stripped (9000 series)
      
      * tell mac80211 when the IVC has been stripped (9000 series)
      
      * add 2 new PCI IDs, one for 9000 and one for 22000
      
      * fix a queue hang due during a P2P Remain-on-Channel operation
      
      brcmfmac
      
      * fix a race which sometimes caused a crash during sdio unbind
      
      * fix a kernel-doc related build error
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      03afb6e4
    • Antoine Tenart's avatar
      net: mvpp2: fix the RSS table entry offset · 8a7b741e
      Antoine Tenart authored
      The macro used to access or set an RSS table entry was using an offset
      of 8, while it should use an offset of 0. This lead to wrongly configure
      the RSS table, not accessing the right entries.
      
      Fixes: 1d7d15d7 ("net: mvpp2: initialize the RSS tables")
      Signed-off-by: default avatarAntoine Tenart <antoine.tenart@free-electrons.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8a7b741e
    • David S. Miller's avatar
      Merge branch 'tcp-RACK-loss-recovery-bug-fixes' · b7e445a1
      David S. Miller authored
      Yuchung Cheng says:
      
      ====================
      tcp: RACK loss recovery bug fixes
      
      This patch set has four minor bug fixes in TCP RACK loss recovery.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b7e445a1
    • Yuchung Cheng's avatar
      tcp: evaluate packet losses upon RTT change · 6065fd0d
      Yuchung Cheng authored
      RACK skips an ACK unless it advances the most recently delivered
      TX timestamp (rack.mstamp). Since RACK also uses the most recent
      RTT to decide if a packet is lost, RACK should still run the
      loss detection whenever the most recent RTT changes. For example,
      an ACK that does not advance the timestamp but triggers the cwnd
      undo due to reordering, would then use the most recent (higher)
      RTT measurement to detect further losses.
      Signed-off-by: default avatarYuchung Cheng <ycheng@google.com>
      Reviewed-by: default avatarNeal Cardwell <ncardwell@google.com>
      Reviewed-by: default avatarPriyaranjan Jha <priyarjha@google.com>
      Reviewed-by: default avatarEric Dumazet <edumazet@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      6065fd0d
    • Yuchung Cheng's avatar
      tcp: fix off-by-one bug in RACK · 428aec5e
      Yuchung Cheng authored
      RACK should mark a packet lost when remaining wait time is zero.
      Signed-off-by: default avatarYuchung Cheng <ycheng@google.com>
      Reviewed-by: default avatarNeal Cardwell <ncardwell@google.com>
      Reviewed-by: default avatarPriyaranjan Jha <priyarjha@google.com>
      Reviewed-by: default avatarEric Dumazet <edumazet@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      428aec5e
    • Yuchung Cheng's avatar
      tcp: always evaluate losses in RACK upon undo · cd1fc85b
      Yuchung Cheng authored
      When sender detects spurious retransmission, all packets
      marked lost are remarked to be in-flight. However some may
      be considered lost based on its timestamps in RACK. This patch
      forces RACK to re-evaluate, which may be skipped previously if
      the ACK does not advance RACK timestamp.
      Signed-off-by: default avatarYuchung Cheng <ycheng@google.com>
      Reviewed-by: default avatarNeal Cardwell <ncardwell@google.com>
      Reviewed-by: default avatarPriyaranjan Jha <priyarjha@google.com>
      Reviewed-by: default avatarEric Dumazet <edumazet@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      cd1fc85b
    • Yuchung Cheng's avatar
      tcp: correctly test congestion state in RACK · 0ce294d8
      Yuchung Cheng authored
      RACK does not test the loss recovery state correctly to compute
      the reordering window. It assumes if lost_out is zero then TCP is
      not in loss recovery. But it can be zero during recovery before
      calling tcp_rack_detect_loss(): when an ACK acknowledges all
      packets marked lost before receiving this ACK, but has not yet
      to discover new ones by tcp_rack_detect_loss(). The fix is to
      simply test the congestion state directly.
      Signed-off-by: default avatarYuchung Cheng <ycheng@google.com>
      Reviewed-by: default avatarNeal Cardwell <ncardwell@google.com>
      Reviewed-by: default avatarPriyaranjan Jha <priyarjha@google.com>
      Reviewed-by: default avatarEric Dumazet <edumazet@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      0ce294d8
    • Calvin Owens's avatar
      bnxt_en: Fix sources of spurious netpoll warnings · 2edbdb31
      Calvin Owens authored
      After applying 2270bc5d ("bnxt_en: Fix netpoll handling") and
      903649e7 ("bnxt_en: Improve -ENOMEM logic in NAPI poll loop."),
      we still see the following WARN fire:
      
        ------------[ cut here ]------------
        WARNING: CPU: 0 PID: 1875170 at net/core/netpoll.c:165 netpoll_poll_dev+0x15a/0x160
        bnxt_poll+0x0/0xd0 exceeded budget in poll
        <snip>
        Call Trace:
         [<ffffffff814be5cd>] dump_stack+0x4d/0x70
         [<ffffffff8107e013>] __warn+0xd3/0xf0
         [<ffffffff8107e07f>] warn_slowpath_fmt+0x4f/0x60
         [<ffffffff8179519a>] netpoll_poll_dev+0x15a/0x160
         [<ffffffff81795f38>] netpoll_send_skb_on_dev+0x168/0x250
         [<ffffffff817962fc>] netpoll_send_udp+0x2dc/0x440
         [<ffffffff815fa9be>] write_ext_msg+0x20e/0x250
         [<ffffffff810c8125>] call_console_drivers.constprop.23+0xa5/0x110
         [<ffffffff810c9549>] console_unlock+0x339/0x5b0
         [<ffffffff810c9a88>] vprintk_emit+0x2c8/0x450
         [<ffffffff810c9d5f>] vprintk_default+0x1f/0x30
         [<ffffffff81173df5>] printk+0x48/0x50
         [<ffffffffa0197713>] edac_raw_mc_handle_error+0x563/0x5c0 [edac_core]
         [<ffffffffa0197b9b>] edac_mc_handle_error+0x42b/0x6e0 [edac_core]
         [<ffffffffa01c3a60>] sbridge_mce_output_error+0x410/0x10d0 [sb_edac]
         [<ffffffffa01c47cc>] sbridge_check_error+0xac/0x130 [sb_edac]
         [<ffffffffa0197f3c>] edac_mc_workq_function+0x3c/0x90 [edac_core]
         [<ffffffff81095f8b>] process_one_work+0x19b/0x480
         [<ffffffff810967ca>] worker_thread+0x6a/0x520
         [<ffffffff8109c7c4>] kthread+0xe4/0x100
         [<ffffffff81884c52>] ret_from_fork+0x22/0x40
      
      This happens because we increment rx_pkts on -ENOMEM and -EIO, resulting
      in rx_pkts > 0. Fix this by only bumping rx_pkts if we were actually
      given a non-zero budget.
      Signed-off-by: default avatarCalvin Owens <calvinowens@fb.com>
      Acked-by: default avatarMichael Chan <michael.chan@broadcom.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2edbdb31
    • Neil Armstrong's avatar
      ARM64: dts: meson-gx: fix UART pclk clock name · 39005e56
      Neil Armstrong authored
      The clock-names for pclk was wrongly set to "core", but the bindings
      specifies "pclk".
      This was not cathed until the legacy non-documented bindings were removed.
      Reported-by: default avatarAndreas Färber <afaerber@suse.de>
      Fixes: f72d6f60 ("ARM64: dts: meson-gx: use stable UART bindings with correct gate clock")
      Signed-off-by: default avatarNeil Armstrong <narmstrong@baylibre.com>
      Signed-off-by: default avatarKevin Hilman <khilman@baylibre.com>
      39005e56
    • David S. Miller's avatar
      Merge branch 'tcp-bbr-sampling-fixes' · b25b3e2f
      David S. Miller authored
      Neal Cardwell says:
      
      ====================
      TCP BBR sampling fixes for loss recovery undo
      
      This patch series has a few minor bug fixes for cases where spurious
      loss recoveries can trick BBR estimators into estimating that the
      available bandwidth is much lower than the true available bandwidth.
      In both cases the fix here is to just reset the estimator upon loss
      recovery undo.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b25b3e2f
    • Neal Cardwell's avatar
      tcp_bbr: reset long-term bandwidth sampling on loss recovery undo · 600647d4
      Neal Cardwell authored
      Fix BBR so that upon notification of a loss recovery undo BBR resets
      long-term bandwidth sampling.
      
      Under high reordering, reordering events can be interpreted as loss.
      If the reordering and spurious loss estimates are high enough, this
      can cause BBR to spuriously estimate that we are seeing loss rates
      high enough to trigger long-term bandwidth estimation. To avoid that
      problem, this commit resets long-term bandwidth sampling on loss
      recovery undo events.
      Signed-off-by: default avatarNeal Cardwell <ncardwell@google.com>
      Reviewed-by: default avatarYuchung Cheng <ycheng@google.com>
      Acked-by: default avatarSoheil Hassas Yeganeh <soheil@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      600647d4