1. 13 Apr, 2021 7 commits
  2. 04 Apr, 2021 4 commits
    • Leon Romanovsky's avatar
      net/mlx5: Implement sriov_get_vf_total_msix/count() callbacks · e71b75f7
      Leon Romanovsky authored
      The mlx5 implementation executes a firmware command on the PF to change
      the configuration of the selected VF.
      
      Link: https://lore.kernel.org/linux-pci/20210314124256.70253-5-leon@kernel.orgAcked-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      Signed-off-by: default avatarLeon Romanovsky <leonro@nvidia.com>
      e71b75f7
    • Leon Romanovsky's avatar
      net/mlx5: Dynamically assign MSI-X vectors count · 604774ad
      Leon Romanovsky authored
      The number of MSI-X vectors is a PCI property visible through lspci. The
      field is read-only and configured by the device. The mlx5 devices work in
      a static or dynamic assignment mode.
      
      Static assignment means that all newly created VFs have a preset number of
      MSI-X vectors determined by device configuration parameters. This can
      result in some VFs having too many or too few MSI-X vectors. Till now this
      has been the only means of fine-tuning the MSI-X vector count and it was
      acceptable for small numbers of VFs.
      
      With dynamic assignment the inefficiency of having a fixed number of MSI-X
      vectors can be avoided with each VF having exactly the required
      vectors. Userspace will provide this information while provisioning the VF
      for use, based on the intended use. For instance if being used with a VM,
      the MSI-X vector count might be matched to the CPU count of the VM.
      
      For compatibility mlx5 continues to start up with MSI-X vector assignment,
      but the kernel can now access a larger dynamic vector pool and assign more
      vectors to created VFs.
      
      Link: https://lore.kernel.org/linux-pci/20210314124256.70253-4-leon@kernel.orgAcked-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      Signed-off-by: default avatarLeon Romanovsky <leonro@nvidia.com>
      604774ad
    • Leon Romanovsky's avatar
      net/mlx5: Add dynamic MSI-X capabilities bits · 0b989c1e
      Leon Romanovsky authored
      These new fields declare the number of MSI-X vectors that is possible to
      allocate on the VF through PF configuration.
      
      Value must be in range defined by min_dynamic_vf_msix_table_size and
      max_dynamic_vf_msix_table_size.
      
      The driver should continue to query its MSI-X table through PCI
      configuration header.
      
      Link: https://lore.kernel.org/linux-pci/20210314124256.70253-3-leon@kernel.orgAcked-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      Signed-off-by: default avatarLeon Romanovsky <leonro@nvidia.com>
      0b989c1e
    • Leon Romanovsky's avatar
      PCI/IOV: Add sysfs MSI-X vector assignment interface · c3d5c2d9
      Leon Romanovsky authored
      A typical cloud provider SR-IOV use case is to create many VFs for use by
      guest VMs. The VFs may not be assigned to a VM until a customer requests a
      VM of a certain size, e.g., number of CPUs. A VF may need MSI-X vectors
      proportional to the number of CPUs in the VM, but there is no standard way
      to change the number of MSI-X vectors supported by a VF.
      
      Some Mellanox ConnectX devices support dynamic assignment of MSI-X vectors
      to SR-IOV VFs. This can be done by the PF driver after VFs are enabled,
      and it can be done without affecting VFs that are already in use. The
      hardware supports a limited pool of MSI-X vectors that can be assigned to
      the PF or to individual VFs.  This is device-specific behavior that
      requires support in the PF driver.
      
      Add a read-only "sriov_vf_total_msix" sysfs file for the PF and a writable
      "sriov_vf_msix_count" file for each VF. Management software may use these
      to learn how many MSI-X vectors are available and to dynamically assign
      them to VFs before the VFs are passed through to a VM.
      
      If the PF driver implements the ->sriov_get_vf_total_msix() callback,
      "sriov_vf_total_msix" contains the total number of MSI-X vectors available
      for distribution among VFs.
      
      If no driver is bound to the VF, writing "N" to "sriov_vf_msix_count" uses
      the PF driver ->sriov_set_msix_vec_count() callback to assign "N" MSI-X
      vectors to the VF.  When a VF driver subsequently reads the MSI-X Message
      Control register, it will see the new Table Size "N".
      
      Link: https://lore.kernel.org/linux-pci/20210314124256.70253-2-leon@kernel.orgAcked-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      Signed-off-by: default avatarLeon Romanovsky <leonro@nvidia.com>
      c3d5c2d9
  3. 12 Mar, 2021 9 commits
  4. 06 Mar, 2021 4 commits
  5. 05 Mar, 2021 16 commits
    • Linus Torvalds's avatar
      Merge tag 'for-5.12/dm-fixes' of... · 63dcd69d
      Linus Torvalds authored
      Merge tag 'for-5.12/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
      
      Pull device mapper fixes from Mike Snitzer:
       "Fix DM verity target's optional Forward Error Correction (FEC) for
        Reed-Solomon roots that are unaligned to block size"
      
      * tag 'for-5.12/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
        dm verity: fix FEC for RS roots unaligned to block size
        dm bufio: subtract the number of initial sectors in dm_bufio_get_device_size
      63dcd69d
    • Linus Torvalds's avatar
      Merge tag 'block-5.12-2021-03-05' of git://git.kernel.dk/linux-block · 47454caf
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
      
       - NVMe fixes:
            - more device quirks (Julian Einwag, Zoltán Böszörményi, Pascal
              Terjan)
            - fix a hwmon error return (Daniel Wagner)
            - fix the keep alive timeout initialization (Martin George)
            - ensure the model_number can't be changed on a used subsystem
              (Max Gurtovoy)
      
       - rsxx missing -EFAULT on copy_to_user() failure (Dan)
      
       - rsxx remove unused linux.h include (Tian)
      
       - kill unused RQF_SORTED (Jean)
      
       - updated outdated BFQ comments (Joseph)
      
       - revert work-around commit for bd_size_lock, since we removed the
         offending user in this merge window (Damien)
      
      * tag 'block-5.12-2021-03-05' of git://git.kernel.dk/linux-block:
        nvmet: model_number must be immutable once set
        nvme-fabrics: fix kato initialization
        nvme-hwmon: Return error code when registration fails
        nvme-pci: add quirks for Lexar 256GB SSD
        nvme-pci: mark Kingston SKC2000 as not supporting the deepest power state
        nvme-pci: mark Seagate Nytro XM1440 as QUIRK_NO_NS_DESC_LIST.
        rsxx: Return -EFAULT if copy_to_user() fails
        block/bfq: update comments and default value in docs for fifo_expire
        rsxx: remove unused including <linux/version.h>
        block: Drop leftover references to RQF_SORTED
        block: revert "block: fix bd_size_lock use"
      47454caf
    • Linus Torvalds's avatar
      Merge tag 'io_uring-5.12-2021-03-05' of git://git.kernel.dk/linux-block · f292e873
      Linus Torvalds authored
      Pull io_uring fixes from Jens Axboe:
       "A bit of a mix between fallout from the worker change, cleanups and
        reductions now possible from that change, and fixes in general. In
        detail:
      
         - Fully serialize manager and worker creation, fixing races due to
           that.
      
         - Clean up some naming that had gone stale.
      
         - SQPOLL fixes.
      
         - Fix race condition around task_work rework that went into this
           merge window.
      
         - Implement unshare. Used for when the original task does unshare(2)
           or setuid/seteuid and friends, drops the original workers and forks
           new ones.
      
         - Drop the only remaining piece of state shuffling we had left, which
           was cred. Move it into issue instead, and we can drop all of that
           code too.
      
         - Kill f_op->flush() usage. That was such a nasty hack that we had
           out of necessity, we no longer need it.
      
         - Following from ->flush() removal, we can also drop various bits of
           ctx state related to SQPOLL and cancelations.
      
         - Fix an issue with IOPOLL retry, which originally was fallout from a
           filemap change (removing iov_iter_revert()), but uncovered an issue
           with iovec re-import too late.
      
         - Fix an issue with system suspend.
      
         - Use xchg() for fallback work, instead of cmpxchg().
      
         - Properly destroy io-wq on exec.
      
         - Add create_io_thread() core helper, and use that in io-wq and
           io_uring. This allows us to remove various silly completion events
           related to thread setup.
      
         - A few error handling fixes.
      
        This should be the grunt of fixes necessary for the new workers, next
        week should be quieter. We've got a pending series from Pavel on
        cancelations, and how tasks and rings are indexed. Outside of that,
        should just be minor fixes. Even with these fixes, we're still killing
        a net ~80 lines"
      
      * tag 'io_uring-5.12-2021-03-05' of git://git.kernel.dk/linux-block: (41 commits)
        io_uring: don't restrict issue_flags for io_openat
        io_uring: make SQPOLL thread parking saner
        io-wq: kill hashed waitqueue before manager exits
        io_uring: clear IOCB_WAITQ for non -EIOCBQUEUED return
        io_uring: don't keep looping for more events if we can't flush overflow
        io_uring: move to using create_io_thread()
        kernel: provide create_io_thread() helper
        io_uring: reliably cancel linked timeouts
        io_uring: cancel-match based on flags
        io-wq: ensure all pending work is canceled on exit
        io_uring: ensure that threads freeze on suspend
        io_uring: remove extra in_idle wake up
        io_uring: inline __io_queue_async_work()
        io_uring: inline io_req_clean_work()
        io_uring: choose right tctx->io_wq for try cancel
        io_uring: fix -EAGAIN retry with IOPOLL
        io-wq: fix error path leak of buffered write hash map
        io_uring: remove sqo_task
        io_uring: kill sqo_dead and sqo submission halting
        io_uring: ignore double poll add on the same waitqueue head
        ...
      f292e873
    • Linus Torvalds's avatar
      Merge tag 'pm-5.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 6d47254c
      Linus Torvalds authored
      Pull power management fixes from Rafael Wysocki:
       "These fix the usage of device links in the runtime PM core code and
        update the DTPM (Dynamic Thermal Power Management) feature added
        recently.
      
        Specifics:
      
         - Make the runtime PM core code avoid attempting to suspend supplier
           devices before updating the PM-runtime status of a consumer to
           'suspended' (Rafael Wysocki).
      
         - Fix DTPM (Dynamic Thermal Power Management) root node
           initialization and label that feature as EXPERIMENTAL in Kconfig
           (Daniel Lezcano)"
      
      * tag 'pm-5.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        powercap/drivers/dtpm: Add the experimental label to the option description
        powercap/drivers/dtpm: Fix root node initialization
        PM: runtime: Update device status before letting suppliers suspend
      6d47254c
    • Linus Torvalds's avatar
      Merge tag 'acpi-5.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · ea6be461
      Linus Torvalds authored
      Pull ACPI fix from Rafael Wysocki:
       "Make the empty stubs of some helper functions used when CONFIG_ACPI is
        not set actually match those functions (Andy Shevchenko)"
      
      * tag 'acpi-5.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        ACPI: bus: Constify is_acpi_node() and friends (part 2)
      ea6be461
    • Linus Torvalds's avatar
      Merge tag 'iommu-fixes-v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu · fc2c8d0a
      Linus Torvalds authored
      Pull iommu fixes from Joerg Roedel:
      
       - Fix a sleeping-while-atomic issue in the AMD IOMMU code
      
       - Disable lazy IOTLB flush for untrusted devices in the Intel VT-d
         driver
      
       - Fix status code definitions for Intel VT-d
      
       - Fix IO Page Fault issue in Tegra IOMMU driver
      
      * tag 'iommu-fixes-v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
        iommu/vt-d: Fix status code for Allocate/Free PASID command
        iommu: Don't use lazy flush for untrusted device
        iommu/tegra-smmu: Fix mc errors on tegra124-nyan
        iommu/amd: Fix sleeping in atomic in increase_address_space()
      fc2c8d0a
    • Linus Torvalds's avatar
      Merge tag 'for-5.12-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux · f09b04cc
      Linus Torvalds authored
      Pull btrfs fixes from David Sterba:
       "More regression fixes and stabilization.
      
        Regressions:
      
         - zoned mode
            - count zone sizes in wider int types
            - fix space accounting for read-only block groups
      
         - subpage: fix page tail zeroing
      
        Fixes:
      
         - fix spurious warning when remounting with free space tree
      
         - fix warning when creating a directory with smack enabled
      
         - ioctl checks for qgroup inheritance when creating a snapshot
      
         - qgroup
            - fix missing unlock on error path in zero range
            - fix amount of released reservation on error
            - fix flushing from unsafe context with open transaction,
              potentially deadlocking
      
         - minor build warning fixes"
      
      * tag 'for-5.12-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
        btrfs: zoned: do not account freed region of read-only block group as zone_unusable
        btrfs: zoned: use sector_t for zone sectors
        btrfs: subpage: fix the false data csum mismatch error
        btrfs: fix warning when creating a directory with smack enabled
        btrfs: don't flush from btrfs_delayed_inode_reserve_metadata
        btrfs: export and rename qgroup_reserve_meta
        btrfs: free correct amount of space in btrfs_delayed_inode_reserve_metadata
        btrfs: fix spurious free_space_tree remount warning
        btrfs: validate qgroup inherit for SNAP_CREATE_V2 ioctl
        btrfs: unlock extents in btrfs_zero_range in case of quota reservation errors
        btrfs: ref-verify: use 'inline void' keyword ordering
      f09b04cc
    • Linus Torvalds's avatar
      Merge tag 'devicetree-fixes-for-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux · 6bf331d5
      Linus Torvalds authored
      Pull devicetree fixes from Rob Herring:
      
       - Another batch of graph and video-interfaces schema conversions
      
       - Drop DT header symlink for dropped C6X arch
      
       - Fix bcm2711-hdmi schema error
      
      * tag 'devicetree-fixes-for-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
        dt-bindings: media: Use graph and video-interfaces schemas, round 2
        dts: drop dangling c6x symlink
        dt-bindings: bcm2711-hdmi: Fix broken schema
      6bf331d5
    • Linus Torvalds's avatar
      Merge tag 'trace-v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace · 54663cf3
      Linus Torvalds authored
      Pull tracing fixes from Steven Rostedt:
       "Functional fixes:
      
         - Fix big endian conversion for arm64 in recordmcount processing
      
         - Fix timestamp corruption in ring buffer on discarding events
      
         - Fix memory leak in __create_synth_event()
      
         - Skip selftests if tracing is disabled as it will cause them to
           fail.
      
        Non-functional fixes:
      
         - Fix help text in Kconfig
      
         - Remove duplicate prototype for trace_empty()
      
         - Fix stale comment about the trace_event_call flags.
      
        Self test update:
      
         - Add more information to the validation output of when a corrupt
           timestamp is found in the ring buffer, and also trigger a warning
           to make sure that tests catch it"
      
      * tag 'trace-v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
        tracing: Fix comment about the trace_event_call flags
        tracing: Skip selftests if tracing is disabled
        tracing: Fix memory leak in __create_synth_event()
        ring-buffer: Add a little more information and a WARN when time stamp going backwards is detected
        ring-buffer: Force before_stamp and write_stamp to be different on discard
        tracing: Fix help text of TRACEPOINT_BENCHMARK in Kconfig
        tracing: Remove duplicate declaration from trace.h
        ftrace: Have recordmcount use w8 to read relp->r_info in arm64_is_fake_mcount
      54663cf3
    • Bob Pearson's avatar
      RDMA/rxe: Fix errant WARN_ONCE in rxe_completer() · 545c4ab4
      Bob Pearson authored
      In rxe_comp.c in rxe_completer() the function free_pkt() did not clear skb
      which triggered a warning at 'done:' and could possibly at 'exit:'. The
      WARN_ONCE() calls are not actually needed.  The call to free_pkt() is
      moved to the end to clearly show that all skbs are freed.
      
      Fixes: 899aba89 ("RDMA/rxe: Fix FIXME in rxe_udp_encap_recv()")
      Link: https://lore.kernel.org/r/20210304192048.2958-1-rpearson@hpe.comSigned-off-by: default avatarBob Pearson <rpearsonhpe@gmail.com>
      Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
      545c4ab4
    • Bob Pearson's avatar
      RDMA/rxe: Fix extra deref in rxe_rcv_mcast_pkt() · 5e4a7ccc
      Bob Pearson authored
      rxe_rcv_mcast_pkt() dropped a reference to ib_device when no error
      occurred causing an underflow on the reference counter.  This code is
      cleaned up to be clearer and easier to read.
      
      Fixes: 899aba89 ("RDMA/rxe: Fix FIXME in rxe_udp_encap_recv()")
      Link: https://lore.kernel.org/r/20210304192048.2958-1-rpearson@hpe.comSigned-off-by: default avatarBob Pearson <rpearsonhpe@gmail.com>
      Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
      5e4a7ccc
    • Bob Pearson's avatar
      RDMA/rxe: Fix missed IB reference counting in loopback · 21e27ac8
      Bob Pearson authored
      When the noted patch below extending the reference taken by
      rxe_get_dev_from_net() in rxe_udp_encap_recv() until each skb is freed it
      was not matched by a reference in the loopback path resulting in
      underflows.
      
      Fixes: 899aba89 ("RDMA/rxe: Fix FIXME in rxe_udp_encap_recv()")
      Link: https://lore.kernel.org/r/20210304192048.2958-1-rpearson@hpe.comSigned-off-by: default avatarBob Pearson <rpearsonhpe@gmail.com>
      Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
      21e27ac8
    • Pavel Begunkov's avatar
      io_uring: don't restrict issue_flags for io_openat · e45cff58
      Pavel Begunkov authored
      45d189c6 ("io_uring: replace force_nonblock with flags") did
      something strange for io_openat() slicing all issue_flags but
      IO_URING_F_NONBLOCK. Not a bug for now, but better to just forward the
      flags.
      Signed-off-by: default avatarPavel Begunkov <asml.silence@gmail.com>
      Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      e45cff58
    • Jens Axboe's avatar
      Merge tag 'nvme-5.12-2021-03-05' of git://git.infradead.org/nvme into block-5.12 · a2b658e4
      Jens Axboe authored
      Pull NVMe fixes from Christoph:
      
      "nvme fixes for 5.12:
      
       - more device quirks (Julian Einwag, Zoltán Böszörményi, Pascal Terjan)
       - fix a hwmon error return (Daniel Wagner)
       - fix the keep alive timeout initialization (Martin George)
       - ensure the model_number can't be changed on a used subsystem
         (Max Gurtovoy)"
      
      * tag 'nvme-5.12-2021-03-05' of git://git.infradead.org/nvme:
        nvmet: model_number must be immutable once set
        nvme-fabrics: fix kato initialization
        nvme-hwmon: Return error code when registration fails
        nvme-pci: add quirks for Lexar 256GB SSD
        nvme-pci: mark Kingston SKC2000 as not supporting the deepest power state
        nvme-pci: mark Seagate Nytro XM1440 as QUIRK_NO_NS_DESC_LIST.
      a2b658e4
    • Jens Axboe's avatar
      io_uring: make SQPOLL thread parking saner · 86e0d676
      Jens Axboe authored
      We have this weird true/false return from parking, and then some of the
      callers decide to look at that. It can lead to unbalanced parks and
      sqd locking. Have the callers check the thread status once it's parked.
      We know we have the lock at that point, so it's either valid or it's NULL.
      
      Fix race with parking on thread exit. We need to be careful here with
      ordering of the sdq->lock and the IO_SQ_THREAD_SHOULD_PARK bit.
      
      Rename sqd->completion to sqd->parked to reflect that this is the only
      thing this completion event doesn.
      Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      86e0d676
    • Jens Axboe's avatar
      io-wq: kill hashed waitqueue before manager exits · 09ca6c40
      Jens Axboe authored
      If we race with shutting down the io-wq context and someone queueing
      a hashed entry, then we can exit the manager with it armed. If it then
      triggers after the manager has exited, we can have a use-after-free where
      io_wqe_hash_wake() attempts to wake a now gone manager process.
      
      Move the killing of the hashed write queue into the manager itself, so
      that we know we've killed it before the task exits.
      
      Fixes: e941894e ("io-wq: make buffered file write hashed work map per-ctx")
      Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      09ca6c40