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Author SHA1 Message Date
Linus Torvalds
1a9239bb42 Merge tag 'net-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 
Pull networking updates from Jakub Kicinski:
 "Core & protocols:

   - Continue Netlink conversions to per-namespace RTNL lock
     (IPv4 routing, routing rules, routing next hops, ARP ioctls)

   - Continue extending the use of netdev instance locks. As a driver
     opt-in protect queue operations and (in due course) ethtool
     operations with the instance lock and not RTNL lock.

   - Support collecting TCP timestamps (data submitted, sent, acked) in
     BPF, allowing for transparent (to the application) and lower
     overhead tracking of TCP RPC performance.

   - Tweak existing networking Rx zero-copy infra to support zero-copy
     Rx via io_uring.

   - Optimize MPTCP performance in single subflow mode by 29%.

   - Enable GRO on packets which went thru XDP CPU redirect (were queued
     for processing on a different CPU). Improving TCP stream
     performance up to 2x.

   - Improve performance of contended connect() by 200% by searching for
     an available 4-tuple under RCU rather than a spin lock. Bring an
     additional 229% improvement by tweaking hash distribution.

   - Avoid unconditionally touching sk_tsflags on RX, improving
     performance under UDP flood by as much as 10%.

   - Avoid skb_clone() dance in ping_rcv() to improve performance under
     ping flood.

   - Avoid FIB lookup in netfilter if socket is available, 20% perf win.

   - Rework network device creation (in-kernel) API to more clearly
     identify network namespaces and their roles. There are up to 4
     namespace roles but we used to have just 2 netns pointer arguments,
     interpreted differently based on context.

   - Use sysfs_break_active_protection() instead of trylock to avoid
     deadlocks between unregistering objects and sysfs access.

   - Add a new sysctl and sockopt for capping max retransmit timeout in
     TCP.

   - Support masking port and DSCP in routing rule matches.

   - Support dumping IPv4 multicast addresses with RTM_GETMULTICAST.

   - Support specifying at what time packet should be sent on AF_XDP
     sockets.

   - Expose TCP ULP diagnostic info (for TLS and MPTCP) to non-admin
     users.

   - Add Netlink YAML spec for WiFi (nl80211) and conntrack.

   - Introduce EXPORT_IPV6_MOD() and EXPORT_IPV6_MOD_GPL() for symbols
     which only need to be exported when IPv6 support is built as a
     module.

   - Age FDB entries based on Rx not Tx traffic in VxLAN, similar to
     normal bridging.

   - Allow users to specify source port range for GENEVE tunnels.

   - netconsole: allow attaching kernel release, CPU ID and task name to
     messages as metadata

  Driver API:

   - Continue rework / fixing of Energy Efficient Ethernet (EEE) across
     the SW layers. Delegate the responsibilities to phylink where
     possible. Improve its handling in phylib.

   - Support symmetric OR-XOR RSS hashing algorithm.

   - Support tracking and preserving IRQ affinity by NAPI itself.

   - Support loopback mode speed selection for interface selftests.

  Device drivers:

   - Remove the IBM LCS driver for s390

   - Remove the sb1000 cable modem driver

   - Add support for SFP module access over SMBus

   - Add MCTP transport driver for MCTP-over-USB

   - Enable XDP metadata support in multiple drivers

   - Ethernet high-speed NICs:
      - Broadcom (bnxt):
         - add PCIe TLP Processing Hints (TPH) support for new AMD
           platforms
         - support dumping RoCE queue state for debug
         - opt into instance locking
      - Intel (100G, ice, idpf):
         - ice: rework MSI-X IRQ management and distribution
         - ice: support for E830 devices
         - iavf: add support for Rx timestamping
         - iavf: opt into instance locking
      - nVidia/Mellanox:
         - mlx4: use page pool memory allocator for Rx
         - mlx5: support for one PTP device per hardware clock
         - mlx5: support for 200Gbps per-lane link modes
         - mlx5: move IPSec policy check after decryption
      - AMD/Solarflare:
         - support FW flashing via devlink
      - Cisco (enic):
         - use page pool memory allocator for Rx
         - enable 32, 64 byte CQEs
         - get max rx/tx ring size from the device
      - Meta (fbnic):
         - support flow steering and RSS configuration
         - report queue stats
         - support TCP segmentation
         - support IRQ coalescing
         - support ring size configuration
      - Marvell/Cavium:
         - support AF_XDP
      - Wangxun:
         - support for PTP clock and timestamping
      - Huawei (hibmcge):
         - checksum offload
         - add more statistics

   - Ethernet virtual:
      - VirtIO net:
         - aggressively suppress Tx completions, improve perf by 96%
           with 1 CPU and 55% with 2 CPUs
         - expose NAPI to IRQ mapping and persist NAPI settings
      - Google (gve):
         - support XDP in DQO RDA Queue Format
         - opt into instance locking
      - Microsoft vNIC:
         - support BIG TCP

   - Ethernet NICs consumer, and embedded:
      - Synopsys (stmmac):
         - cleanup Tx and Tx clock setting and other link-focused
           cleanups
         - enable SGMII and 2500BASEX mode switching for Intel platforms
         - support Sophgo SG2044
      - Broadcom switches (b53):
         - support for BCM53101
      - TI:
         - iep: add perout configuration support
         - icssg: support XDP
      - Cadence (macb):
         - implement BQL
      - Xilinx (axinet):
         - support dynamic IRQ moderation and changing coalescing at
           runtime
         - implement BQL
         - report standard stats
      - MediaTek:
         - support phylink managed EEE
      - Intel:
         - igc: don't restart the interface on every XDP program change
      - RealTek (r8169):
         - support reading registers of internal PHYs directly
         - increase max jumbo packet size on RTL8125/RTL8126
      - Airoha:
         - support for RISC-V NPU packet processing unit
         - enable scatter-gather and support MTU up to 9kB
      - Tehuti (tn40xx):
         - support cards with TN4010 MAC and an Aquantia AQR105 PHY

   - Ethernet PHYs:
      - support for TJA1102S, TJA1121
      - dp83tg720: add randomized polling intervals for link detection
      - dp83822: support changing the transmit amplitude voltage
      - support for LEDs on 88q2xxx

   - CAN:
      - canxl: support Remote Request Substitution bit access
      - flexcan: add S32G2/S32G3 SoC

   - WiFi:
      - remove cooked monitor support
      - strict mode for better AP testing
      - basic EPCS support
      - OMI RX bandwidth reduction support
      - batman-adv: add support for jumbo frames

   - WiFi drivers:
      - RealTek (rtw88):
         - support RTL8814AE and RTL8814AU
      - RealTek (rtw89):
         - switch using wiphy_lock and wiphy_work
         - add BB context to manipulate two PHY as preparation of MLO
         - improve BT-coexistence mechanism to play A2DP smoothly
      - Intel (iwlwifi):
         - add new iwlmld sub-driver for latest HW/FW combinations
      - MediaTek (mt76):
         - preparation for mt7996 Multi-Link Operation (MLO) support
      - Qualcomm/Atheros (ath12k):
         - continued work on MLO
      - Silabs (wfx):
         - Wake-on-WLAN support

   - Bluetooth:
      - add support for skb TX SND/COMPLETION timestamping
      - hci_core: enable buffer flow control for SCO/eSCO
      - coredump: log devcd dumps into the monitor

   - Bluetooth drivers:
      - intel: add support to configure TX power
      - nxp: handle bootloader error during cmd5 and cmd7"

* tag 'net-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1681 commits)
  unix: fix up for "apparmor: add fine grained af_unix mediation"
  mctp: Fix incorrect tx flow invalidation condition in mctp-i2c
  net: usb: asix: ax88772: Increase phy_name size
  net: phy: Introduce PHY_ID_SIZE — minimum size for PHY ID string
  net: libwx: fix Tx L4 checksum
  net: libwx: fix Tx descriptor content for some tunnel packets
  atm: Fix NULL pointer dereference
  net: tn40xx: add pci-id of the aqr105-based Tehuti TN4010 cards
  net: tn40xx: prepare tn40xx driver to find phy of the TN9510 card
  net: tn40xx: create swnode for mdio and aqr105 phy and add to mdiobus
  net: phy: aquantia: add essential functions to aqr105 driver
  net: phy: aquantia: search for firmware-name in fwnode
  net: phy: aquantia: add probe function to aqr105 for firmware loading
  net: phy: Add swnode support to mdiobus_scan
  gve: add XDP DROP and PASS support for DQ
  gve: update XDP allocation path support RX buffer posting
  gve: merge packet buffer size fields
  gve: update GQ RX to use buf_size
  gve: introduce config-based allocation for XDP
  gve: remove xdp_xsk_done and xdp_xsk_wakeup statistics
  ...
 2025-03-26 21:48:21 -07:00
Linus Torvalds
2e3fcbcc3b Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi 
Pull SCSI updates from James Bottomley:
 "Updates to the usual drivers (scsi_debug, ufs, lpfc, st, fnic, mpi3mr,
  mpt3sas) and the removal of cxlflash.

  The only non-trivial core change is an addition to unit attention
  handling to recognize UAs for power on/reset and new media so the tape
  driver can use it"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (107 commits)
  scsi: st: Tighten the page format heuristics with MODE SELECT
  scsi: st: ERASE does not change tape location
  scsi: st: Fix array overflow in st_setup()
  scsi: target: tcm_loop: Fix wrong abort tag
  scsi: lpfc: Restore clearing of NLP_UNREG_INP in ndlp->nlp_flag
  scsi: hisi_sas: Fixed failure to issue vendor specific commands
  scsi: fnic: Remove unnecessary NUL-terminations
  scsi: fnic: Remove redundant flush_workqueue() calls
  scsi: core: Use a switch statement when attaching VPD pages
  scsi: ufs: renesas: Add initialization code for R-Car S4-8 ES1.2
  scsi: ufs: renesas: Add reusable functions
  scsi: ufs: renesas: Refactor 0x10ad/0x10af PHY settings
  scsi: ufs: renesas: Remove register control helper function
  scsi: ufs: renesas: Add register read to remove save/set/restore
  scsi: ufs: renesas: Replace init data by init code
  scsi: ufs: dt-bindings: renesas,ufs: Add calibration data
  scsi: mpi3mr: Task Abort EH Support
  scsi: storvsc: Don't report the host packet status as the hv status
  scsi: isci: Make most module parameters static
  scsi: megaraid_sas: Make most module parameters static
  ...
 2025-03-26 19:57:34 -07:00
Linus Torvalds
9b960d8cd6 Merge tag 'for-6.15/block-20250322' of git://git.kernel.dk/linux 
Pull block updates from Jens Axboe:

 - Fixes for integrity handling

 - NVMe pull request via Keith:
      - Secure concatenation for TCP transport (Hannes)
      - Multipath sysfs visibility (Nilay)
      - Various cleanups (Qasim, Baruch, Wang, Chen, Mike, Damien, Li)
      - Correct use of 64-bit BARs for pci-epf target (Niklas)
      - Socket fix for selinux when used in containers (Peijie)

 - MD pull request via Yu:
      - fix recovery can preempt resync (Li Nan)
      - fix md-bitmap IO limit (Su Yue)
      - fix raid10 discard with REQ_NOWAIT (Xiao Ni)
      - fix raid1 memory leak (Zheng Qixing)
      - fix mddev uaf (Yu Kuai)
      - fix raid1,raid10 IO flags (Yu Kuai)
      - some refactor and cleanup (Yu Kuai)

 - Series cleaning up and fixing bugs in the bad block handling code

 - Improve support for write failure simulation in null_blk

 - Various lock ordering fixes

 - Fixes for locking for debugfs attributes

 - Various ublk related fixes and improvements

 - Cleanups for blk-rq-qos wait handling

 - blk-throttle fixes

 - Fixes for loop dio and sync handling

 - Fixes and cleanups for the auto-PI code

 - Block side support for hardware encryption keys in blk-crypto

 - Various cleanups and fixes

* tag 'for-6.15/block-20250322' of git://git.kernel.dk/linux: (105 commits)
  nvmet: replace max(a, min(b, c)) by clamp(val, lo, hi)
  nvme-tcp: fix selinux denied when calling sock_sendmsg
  nvmet: pci-epf: Always configure BAR0 as 64-bit
  nvmet: Remove duplicate uuid_copy
  nvme: zns: Simplify nvme_zone_parse_entry()
  nvmet: pci-epf: Remove redundant 'flush_workqueue()' calls
  nvmet-fc: Remove unused functions
  nvme-pci: remove stale comment
  nvme-fc: Utilise min3() to simplify queue count calculation
  nvme-multipath: Add visibility for queue-depth io-policy
  nvme-multipath: Add visibility for numa io-policy
  nvme-multipath: Add visibility for round-robin io-policy
  nvmet: add tls_concat and tls_key debugfs entries
  nvmet-tcp: support secure channel concatenation
  nvmet: Add 'sq' argument to alloc_ctrl_args
  nvme-fabrics: reset admin connection for secure concatenation
  nvme-tcp: request secure channel concatenation
  nvme-keyring: add nvme_tls_psk_refresh()
  nvme: add nvme_auth_derive_tls_psk()
  nvme: add nvme_auth_generate_digest()
  ...
 2025-03-26 18:08:55 -07:00
Linus Torvalds
91928e0d3c Merge tag 'for-6.15/io_uring-20250322' of git://git.kernel.dk/linux 
Pull io_uring updates from Jens Axboe:
 "This is the first of the io_uring pull requests for the 6.15 merge
  window, there will be others once the net tree has gone in. This
  contains:

   - Cleanup and unification of cancelation handling across various
     request types.

   - Improvement for bundles, supporting them both for incrementally
     consumed buffers, and for non-multishot requests.

   - Enable toggling of using iowait while waiting on io_uring events or
     not. Unfortunately this is still tied with CPU frequency boosting
     on short waits, as the scheduler side has not been very receptive
     to splitting the (useless) iowait stat from the cpufreq implied
     boost.

   - Add support for kbuf nodes, enabling zero-copy support for the ublk
     block driver.

   - Various cleanups for resource node handling.

   - Series greatly cleaning up the legacy provided (non-ring based)
     buffers. For years, we've been pushing the ring provided buffers as
     the way to go, and that is what people have been using. Reduce the
     complexity and code associated with legacy provided buffers.

   - Series cleaning up the compat handling.

   - Series improving and cleaning up the recvmsg/sendmsg iovec and msg
     handling.

   - Series of cleanups for io-wq.

   - Start adding a bunch of selftests. The liburing repository
     generally carries feature and regression tests for everything, but
     at least for ublk initially, we'll try and go the route of having
     it in selftests as well. We'll see how this goes, might decide to
     migrate more tests this way in the future.

   - Various little cleanups and fixes"

* tag 'for-6.15/io_uring-20250322' of git://git.kernel.dk/linux: (108 commits)
  selftests: ublk: add stripe target
  selftests: ublk: simplify loop io completion
  selftests: ublk: enable zero copy for null target
  selftests: ublk: prepare for supporting stripe target
  selftests: ublk: move common code into common.c
  selftests: ublk: increase max buffer size to 1MB
  selftests: ublk: add single sqe allocator helper
  selftests: ublk: add generic_01 for verifying sequential IO order
  selftests: ublk: fix starting ublk device
  io_uring: enable toggle of iowait usage when waiting on CQEs
  selftests: ublk: fix write cache implementation
  selftests: ublk: add variable for user to not show test result
  selftests: ublk: don't show `modprobe` failure
  selftests: ublk: add one dependency header
  io_uring/kbuf: enable bundles for incrementally consumed buffers
  Revert "io_uring/rsrc: simplify the bvec iter count calculation"
  selftests: ublk: improve test usability
  selftests: ublk: add stress test for covering IO vs. killing ublk server
  selftests: ublk: add one stress test for covering IO vs. removing device
  selftests: ublk: load/unload ublk_drv when preparing & cleaning up tests
  ...
 2025-03-26 17:56:00 -07:00
Linus Torvalds
e50da555ca Merge tag 'sound-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound 
Pull sound updates from Takashi Iwai:
 "We've received lots of commits at this time, as a result of various
  cleanup and refactoring works as well as a few new drivers and the
  generic SoundWire support. Most of changes are device-specific, little
  about the core changes. Some highlights below:

  Core:
   - A couple of (rather minor) race fixes in ALSA sequencer code
   - A regression fix in ALSA timer code that may lead to a deadlock

  ASoC:
   - A large series of code conversion to use modern terminology for the
     clocking configuration
   - Conversions of PM ops with the modern macros in all ASoC drivers
   - Clarification of the control operations
   - Prepartory work for more generic SoundWire SCDA controls
   - Support for AMD ACP 7.x, AWINC WM88166, Everest ES8388, Intel AVS
     PEAKVOL and GAIN DSP modules Mediatek MT8188 DMIC, NXP i.MX95,
     nVidia Tegra interconnects, Rockchip RK3588 S/PDIF, Texas
     Instruments SN012776 and TAS5770L, and Wolfson WM8904 DMICs

  Others:
   - Conversions of PM ops with the modern macros in the rest drivers
   - USB-audio quirks and fixes for Presonus Studio, DJM-A9, CME
   - HD-audio quirks and fixes ASUS, HP, Lenovo, and others"

* tag 'sound-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (651 commits)
  ALSA: hda: tas2781-i2c: Remove unnecessary NULL check before release_firmware()
  ALSA: hda: cs35l56: Remove unnecessary NULL check before release_firmware()
  ALSA: hda/realtek: Bass speaker fixup for ASUS UM5606KA
  ALSA: hda/realtek: Fix built-in mic assignment on ASUS VivoBook X515UA
  ALSA: hda/realtek: Add support for various HP Laptops using CS35L41 HDA
  ALSA: timer: Don't take register_mutex with copy_from/to_user()
  ASoC: SDCA: Correct handling of selected mode DisCo property
  ASoC: amd: yc: update quirk data for new Lenovo model
  ALSA: hda/realtek: fix micmute LEDs on HP Laptops with ALC3247
  ALSA: hda/realtek: fix micmute LEDs on HP Laptops with ALC3315
  ASoC: SOF: mediatek: Commonize duplicated functions
  ASoC: dmic: Fix NULL pointer dereference
  ASoC: wm8904: add DMIC support
  ASoC: wm8904: get platform data from DT
  ASoC: dt-bindings: wm8904: Add DMIC, GPIO, MIC and EQ support
  ASoC: wm8904: Don't touch GPIO configs set to 0xFFFF
  of: Add of_property_read_u16_index
  ALSA: oxygen: Fix dependency on CONFIG_PM_SLEEP
  ASoC: ops: Apply platform_max after deciding control type
  ASoC: ops: Remove some unnecessary local variables
  ...
 2025-03-26 09:41:55 -07:00
Linus Torvalds
1e26c5e28c Merge tag 'media/v6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 
Pull media updates from Mauro Carvalho Chehab:

 - platform: synopsys: hdmirx: Fix 64-bit division for 32-bit targets

 - vim2m: print device name after registering device

 - Synopsys DesignWare HDMI RX Driver and various fixes

 - cec/printk fixes and the removal of the vidioc_g/s_ctrl and
   vidioc_queryctrl callbacks

 - AVerMedia H789-C PCIe support and rc-core structs padding

 - Several camera sensor patches

 - uvcvideo improvements

 - visl: Fix ERANGE error when setting enum controls

 - codec fixes

 - V4L2 camera sensor patches mostly

 - chips-media: wave5: Fixes

 - Add SDM670 camera subsystem

 - Qualcomm iris video decoder driver

 - dt-bindings: update clocks for sc7280-camss

 - various fixes and enhancements

* tag 'media/v6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (264 commits)
  media: pci: mgb4: include linux/errno.h
  media: synopsys: hdmirx: Fix signedness bug in hdmirx_parse_dt()
  media: platform: synopsys: hdmirx: Fix 64-bit division for 32-bit targets
  media: vim2m: print device name after registering device
  media: vivid: Introduce VIDEO_VIVID_OSD
  media: vivid: Move all fb_info references into vivid-osd
  media: platform: synopsys: hdmirx: Optimize struct snps_hdmirx_dev
  media: platform: synopsys: hdmirx: Remove unused HDMI audio CODEC relics
  media: platform: synopsys: hdmirx: Remove duplicated header inclusion
  media: qcom: Clean up Kconfig dependencies
  media: dvb-frontends: tda10048: Make the range of z explicit.
  media: platform: stm32: Add check for clk_enable()
  media: xilinx-tpg: fix double put in xtpg_parse_of()
  media: siano: Fix error handling in smsdvb_module_init()
  media: c8sectpfe: Call of_node_put(i2c_bus) only once in c8sectpfe_probe()
  media: i2c: tda1997x: Call of_node_put(ep) only once in tda1997x_parse_dt()
  dt-bindings: media: mediatek,vcodec: Revise description
  dt-bindings: media: mediatek,jpeg: Relax IOMMU max item count
  media: v4l2-dv-timings: prevent possible overflow in v4l2_detect_gtf()
  media: rockchip: rga: fix rga offset lookup
  ...
 2025-03-25 21:00:31 -07:00
Linus Torvalds
a5b3d8660b Merge tag 'hyperv-next-signed-20250324' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux 
Pull hyperv updates from Wei Liu:

 - Add support for running as the root partition in Hyper-V (Microsoft
   Hypervisor) by exposing /dev/mshv (Nuno and various people)

 - Add support for CPU offlining in Hyper-V (Hamza Mahfooz)

 - Misc fixes and cleanups (Roman Kisel, Tianyu Lan, Wei Liu, Michael
   Kelley, Thorsten Blum)

* tag 'hyperv-next-signed-20250324' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: (24 commits)
  x86/hyperv: fix an indentation issue in mshyperv.h
  x86/hyperv: Add comments about hv_vpset and var size hypercall input args
  Drivers: hv: Introduce mshv_root module to expose /dev/mshv to VMMs
  hyperv: Add definitions for root partition driver to hv headers
  x86: hyperv: Add mshv_handler() irq handler and setup function
  Drivers: hv: Introduce per-cpu event ring tail
  Drivers: hv: Export some functions for use by root partition module
  acpi: numa: Export node_to_pxm()
  hyperv: Introduce hv_recommend_using_aeoi()
  arm64/hyperv: Add some missing functions to arm64
  x86/mshyperv: Add support for extended Hyper-V features
  hyperv: Log hypercall status codes as strings
  x86/hyperv: Fix check of return value from snp_set_vmsa()
  x86/hyperv: Add VTL mode callback for restarting the system
  x86/hyperv: Add VTL mode emergency restart callback
  hyperv: Remove unused union and structs
  hyperv: Add CONFIG_MSHV_ROOT to gate root partition support
  hyperv: Change hv_root_partition into a function
  hyperv: Convert hypercall statuses to linux error codes
  drivers/hv: add CPU offlining support
  ...
 2025-03-25 14:47:04 -07:00
Linus Torvalds
edb0e8f6e2 Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm 
Pull kvm updates from Paolo Bonzini:
 "ARM:

   - Nested virtualization support for VGICv3, giving the nested
     hypervisor control of the VGIC hardware when running an L2 VM

   - Removal of 'late' nested virtualization feature register masking,
     making the supported feature set directly visible to userspace

   - Support for emulating FEAT_PMUv3 on Apple silicon, taking advantage
     of an IMPLEMENTATION DEFINED trap that covers all PMUv3 registers

   - Paravirtual interface for discovering the set of CPU
     implementations where a VM may run, addressing a longstanding issue
     of guest CPU errata awareness in big-little systems and
     cross-implementation VM migration

   - Userspace control of the registers responsible for identifying a
     particular CPU implementation (MIDR_EL1, REVIDR_EL1, AIDR_EL1),
     allowing VMs to be migrated cross-implementation

   - pKVM updates, including support for tracking stage-2 page table
     allocations in the protected hypervisor in the 'SecPageTable' stat

   - Fixes to vPMU, ensuring that userspace updates to the vPMU after
     KVM_RUN are reflected into the backing perf events

  LoongArch:

   - Remove unnecessary header include path

   - Assume constant PGD during VM context switch

   - Add perf events support for guest VM

  RISC-V:

   - Disable the kernel perf counter during configure

   - KVM selftests improvements for PMU

   - Fix warning at the time of KVM module removal

  x86:

   - Add support for aging of SPTEs without holding mmu_lock.

     Not taking mmu_lock allows multiple aging actions to run in
     parallel, and more importantly avoids stalling vCPUs. This includes
     an implementation of per-rmap-entry locking; aging the gfn is done
     with only a per-rmap single-bin spinlock taken, whereas locking an
     rmap for write requires taking both the per-rmap spinlock and the
     mmu_lock.

     Note that this decreases slightly the accuracy of accessed-page
     information, because changes to the SPTE outside aging might not
     use atomic operations even if they could race against a clear of
     the Accessed bit.

     This is deliberate because KVM and mm/ tolerate false
     positives/negatives for accessed information, and testing has shown
     that reducing the latency of aging is far more beneficial to
     overall system performance than providing "perfect" young/old
     information.

   - Defer runtime CPUID updates until KVM emulates a CPUID instruction,
     to coalesce updates when multiple pieces of vCPU state are
     changing, e.g. as part of a nested transition

   - Fix a variety of nested emulation bugs, and add VMX support for
     synthesizing nested VM-Exit on interception (instead of injecting
     #UD into L2)

   - Drop "support" for async page faults for protected guests that do
     not set SEND_ALWAYS (i.e. that only want async page faults at CPL3)

   - Bring a bit of sanity to x86's VM teardown code, which has
     accumulated a lot of cruft over the years. Particularly, destroy
     vCPUs before the MMU, despite the latter being a VM-wide operation

   - Add common secure TSC infrastructure for use within SNP and in the
     future TDX

   - Block KVM_CAP_SYNC_REGS if guest state is protected. It does not
     make sense to use the capability if the relevant registers are not
     available for reading or writing

   - Don't take kvm->lock when iterating over vCPUs in the suspend
     notifier to fix a largely theoretical deadlock

   - Use the vCPU's actual Xen PV clock information when starting the
     Xen timer, as the cached state in arch.hv_clock can be stale/bogus

   - Fix a bug where KVM could bleed PVCLOCK_GUEST_STOPPED across
     different PV clocks; restrict PVCLOCK_GUEST_STOPPED to kvmclock, as
     KVM's suspend notifier only accounts for kvmclock, and there's no
     evidence that the flag is actually supported by Xen guests

   - Clean up the per-vCPU "cache" of its reference pvclock, and instead
     only track the vCPU's TSC scaling (multipler+shift) metadata (which
     is moderately expensive to compute, and rarely changes for modern
     setups)

   - Don't write to the Xen hypercall page on MSR writes that are
     initiated by the host (userspace or KVM) to fix a class of bugs
     where KVM can write to guest memory at unexpected times, e.g.
     during vCPU creation if userspace has set the Xen hypercall MSR
     index to collide with an MSR that KVM emulates

   - Restrict the Xen hypercall MSR index to the unofficial synthetic
     range to reduce the set of possible collisions with MSRs that are
     emulated by KVM (collisions can still happen as KVM emulates
     Hyper-V MSRs, which also reside in the synthetic range)

   - Clean up and optimize KVM's handling of Xen MSR writes and
     xen_hvm_config

   - Update Xen TSC leaves during CPUID emulation instead of modifying
     the CPUID entries when updating PV clocks; there is no guarantee PV
     clocks will be updated between TSC frequency changes and CPUID
     emulation, and guest reads of the TSC leaves should be rare, i.e.
     are not a hot path

  x86 (Intel):

   - Fix a bug where KVM unnecessarily reads XFD_ERR from hardware and
     thus modifies the vCPU's XFD_ERR on a #NM due to CR0.TS=1

   - Pass XFD_ERR as the payload when injecting #NM, as a preparatory
     step for upcoming FRED virtualization support

   - Decouple the EPT entry RWX protection bit macros from the EPT
     Violation bits, both as a general cleanup and in anticipation of
     adding support for emulating Mode-Based Execution Control (MBEC)

   - Reject KVM_RUN if userspace manages to gain control and stuff
     invalid guest state while KVM is in the middle of emulating nested
     VM-Enter

   - Add a macro to handle KVM's sanity checks on entry/exit VMCS
     control pairs in anticipation of adding sanity checks for secondary
     exit controls (the primary field is out of bits)

  x86 (AMD):

   - Ensure the PSP driver is initialized when both the PSP and KVM
     modules are built-in (the initcall framework doesn't handle
     dependencies)

   - Use long-term pins when registering encrypted memory regions, so
     that the pages are migrated out of MIGRATE_CMA/ZONE_MOVABLE and
     don't lead to excessive fragmentation

   - Add macros and helpers for setting GHCB return/error codes

   - Add support for Idle HLT interception, which elides interception if
     the vCPU has a pending, unmasked virtual IRQ when HLT is executed

   - Fix a bug in INVPCID emulation where KVM fails to check for a
     non-canonical address

   - Don't attempt VMRUN for SEV-ES+ guests if the vCPU's VMSA is
     invalid, e.g. because the vCPU was "destroyed" via SNP's AP
     Creation hypercall

   - Reject SNP AP Creation if the requested SEV features for the vCPU
     don't match the VM's configured set of features

  Selftests:

   - Fix again the Intel PMU counters test; add a data load and do
     CLFLUSH{OPT} on the data instead of executing code. The theory is
     that modern Intel CPUs have learned new code prefetching tricks
     that bypass the PMU counters

   - Fix a flaw in the Intel PMU counters test where it asserts that an
     event is counting correctly without actually knowing what the event
     counts on the underlying hardware

   - Fix a variety of flaws, bugs, and false failures/passes
     dirty_log_test, and improve its coverage by collecting all dirty
     entries on each iteration

   - Fix a few minor bugs related to handling of stats FDs

   - Add infrastructure to make vCPU and VM stats FDs available to tests
     by default (open the FDs during VM/vCPU creation)

   - Relax an assertion on the number of HLT exits in the xAPIC IPI test
     when running on a CPU that supports AMD's Idle HLT (which elides
     interception of HLT if a virtual IRQ is pending and unmasked)"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (216 commits)
  RISC-V: KVM: Optimize comments in kvm_riscv_vcpu_isa_disable_allowed
  RISC-V: KVM: Teardown riscv specific bits after kvm_exit
  LoongArch: KVM: Register perf callbacks for guest
  LoongArch: KVM: Implement arch-specific functions for guest perf
  LoongArch: KVM: Add stub for kvm_arch_vcpu_preempted_in_kernel()
  LoongArch: KVM: Remove PGD saving during VM context switch
  LoongArch: KVM: Remove unnecessary header include path
  KVM: arm64: Tear down vGIC on failed vCPU creation
  KVM: arm64: PMU: Reload when resetting
  KVM: arm64: PMU: Reload when user modifies registers
  KVM: arm64: PMU: Fix SET_ONE_REG for vPMC regs
  KVM: arm64: PMU: Assume PMU presence in pmu-emul.c
  KVM: arm64: PMU: Set raw values from user to PM{C,I}NTEN{SET,CLR}, PMOVS{SET,CLR}
  KVM: arm64: Create each pKVM hyp vcpu after its corresponding host vcpu
  KVM: arm64: Factor out pKVM hyp vcpu creation to separate function
  KVM: arm64: Initialize HCRX_EL2 traps in pKVM
  KVM: arm64: Factor out setting HCRX_EL2 traps into separate function
  KVM: x86: block KVM_CAP_SYNC_REGS if guest state is protected
  KVM: x86: Add infrastructure for secure TSC
  KVM: x86: Push down setting vcpu.arch.user_set_tsc
  ...
 2025-03-25 14:22:07 -07:00
Jakub Kicinski
4f74a45c6b Merge tag 'for-net-next-2025-03-25' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next 
Luiz Augusto von Dentz says:

====================
bluetooth-next pull request for net-next:

core:

 - Add support for skb TX SND/COMPLETION timestamping
 - hci_core: Enable buffer flow control for SCO/eSCO
 - coredump: Log devcd dumps into the monitor

 drivers:

 - btusb: Add 2 HWIDs for MT7922
 - btusb: Fix regression in the initialization of fake Bluetooth controllers
 - btusb: Add 14 USB device IDs for Qualcomm WCN785x
 - btintel: Add support for Intel Scorpius Peak
 - btintel: Add support to configure TX power
 - btintel: Add DSBR support for ScP
 - btintel_pcie: Add device id of Whale Peak
 - btintel_pcie: Setup buffers for firmware traces
 - btintel_pcie: Read hardware exception data
 - btintel_pcie: Add support for device coredump
 - btintel_pcie: Trigger device coredump on hardware exception
 - btnxpuart: Support for controller wakeup gpio config
 - btnxpuart: Add support to set BD address
 - btnxpuart: Add correct bootloader error codes
 - btnxpuart: Handle bootloader error during cmd5 and cmd7
 - btnxpuart: Fix kernel panic during FW release
 - qca: add WCN3950 support
 - hci_qca: use the power sequencer for wcn6750
 - btmtksdio: Prevent enabling interrupts after IRQ handler removal

* tag 'for-net-next-2025-03-25' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next: (53 commits)
  Bluetooth: MGMT: Add LL Privacy Setting
  Bluetooth: hci_event: Fix handling of HCI_EV_LE_DIRECT_ADV_REPORT
  Bluetooth: btnxpuart: Fix kernel panic during FW release
  Bluetooth: btnxpuart: Handle bootloader error during cmd5 and cmd7
  Bluetooth: btnxpuart: Add correct bootloader error codes
  t blameBluetooth: btintel: Fix leading white space
  Bluetooth: btintel: Add support to configure TX power
  Bluetooth: btmtksdio: Prevent enabling interrupts after IRQ handler removal
  Bluetooth: btmtk: Remove the resetting step before downloading the fw
  Bluetooth: SCO: add TX timestamping
  Bluetooth: L2CAP: add TX timestamping
  Bluetooth: ISO: add TX timestamping
  Bluetooth: add support for skb TX SND/COMPLETION timestamping
  net-timestamp: COMPLETION timestamp on packet tx completion
  HCI: coredump: Log devcd dumps into the monitor
  Bluetooth: HCI: Add definition of hci_rp_remote_name_req_cancel
  Bluetooth: hci_vhci: Mark Sync Flow Control as supported
  Bluetooth: hci_core: Enable buffer flow control for SCO/eSCO
  Bluetooth: btintel_pci: Fix build warning
  Bluetooth: btintel_pcie: Trigger device coredump on hardware exception
  ...
====================

Link: https://patch.msgid.link/20250325192925.2497890-1-luiz.dentz@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-03-25 14:00:48 -07:00
Linus Torvalds
2d09a9449e Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux 
Pull arm64 updates from Catalin Marinas:
 "Nothing major this time around.

  Apart from the usual perf/PMU updates, some page table cleanups, the
  notable features are average CPU frequency based on the AMUv1
  counters, CONFIG_HOTPLUG_SMT and MOPS instructions (memcpy/memset) in
  the uaccess routines.

  Perf and PMUs:

   - Support for the 'Rainier' CPU PMU from Arm

   - Preparatory driver changes and cleanups that pave the way for BRBE
     support

   - Support for partial virtualisation of the Apple-M1 PMU

   - Support for the second event filter in Arm CSPMU designs

   - Minor fixes and cleanups (CMN and DWC PMUs)

   - Enable EL2 requirements for FEAT_PMUv3p9

  Power, CPU topology:

   - Support for AMUv1-based average CPU frequency

   - Run-time SMT control wired up for arm64 (CONFIG_HOTPLUG_SMT). It
     adds a generic topology_is_primary_thread() function overridden by
     x86 and powerpc

  New(ish) features:

   - MOPS (memcpy/memset) support for the uaccess routines

  Security/confidential compute:

   - Fix the DMA address for devices used in Realms with Arm CCA. The
     CCA architecture uses the address bit to differentiate between
     shared and private addresses

   - Spectre-BHB: assume CPUs Linux doesn't know about vulnerable by
     default

  Memory management clean-ups:

   - Drop the P*D_TABLE_BIT definition in preparation for 128-bit PTEs

   - Some minor page table accessor clean-ups

   - PIE/POE (permission indirection/overlay) helpers clean-up

  Kselftests:

   - MTE: skip hugetlb tests if MTE is not supported on such mappings
     and user correct naming for sync/async tag checking modes

  Miscellaneous:

   - Add a PKEY_UNRESTRICTED definition as 0 to uapi (toolchain people
     request)

   - Sysreg updates for new register fields

   - CPU type info for some Qualcomm Kryo cores"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (72 commits)
  arm64: mm: Don't use %pK through printk
  perf/arm_cspmu: Fix missing io.h include
  arm64: errata: Add newer ARM cores to the spectre_bhb_loop_affected() lists
  arm64: cputype: Add MIDR_CORTEX_A76AE
  arm64: errata: Add KRYO 2XX/3XX/4XX silver cores to Spectre BHB safe list
  arm64: errata: Assume that unknown CPUs _are_ vulnerable to Spectre BHB
  arm64: errata: Add QCOM_KRYO_4XX_GOLD to the spectre_bhb_k24_list
  arm64/sysreg: Enforce whole word match for open/close tokens
  arm64/sysreg: Fix unbalanced closing block
  arm64: Kconfig: Enable HOTPLUG_SMT
  arm64: topology: Support SMT control on ACPI based system
  arch_topology: Support SMT control for OF based system
  cpu/SMT: Provide a default topology_is_primary_thread()
  arm64/mm: Define PTDESC_ORDER
  perf/arm_cspmu: Add PMEVFILT2R support
  perf/arm_cspmu: Generalise event filtering
  perf/arm_cspmu: Move register definitons to header
  arm64/kernel: Always use level 2 or higher for early mappings
  arm64/mm: Drop PXD_TABLE_BIT
  arm64/mm: Check pmd_table() in pmd_trans_huge()
  ...
 2025-03-25 13:16:16 -07:00
Linus Torvalds
317a76a996 Merge tag 'timers-vdso-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull VDSO infrastructure updates from Thomas Gleixner:

 - Consolidate the VDSO storage

   The VDSO data storage and data layout has been largely architecture
   specific for historical reasons. That increases the maintenance
   effort and causes inconsistencies over and over.

   There is no real technical reason for architecture specific layouts
   and implementations. The architecture specific details can easily be
   integrated into a generic layout, which also reduces the amount of
   duplicated code for managing the mappings.

   Convert all architectures over to a unified layout and common mapping
   infrastructure. This splits the VDSO data layout into subsystem
   specific blocks, timekeeping, random and architecture parts, which
   provides a better structure and allows to improve and update the
   functionalities without conflict and interaction.

 - Rework the timekeeping data storage

   The current implementation is designed for exposing system
   timekeeping accessors, which was good enough at the time when it was
   designed.

   PTP and Time Sensitive Networking (TSN) change that as there are
   requirements to expose independent PTP clocks, which are not related
   to system timekeeping.

   Replace the monolithic data storage by a structured layout, which
   allows to add support for independent PTP clocks on top while reusing
   both the data structures and the time accessor implementations.

* tag 'timers-vdso-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (55 commits)
  sparc/vdso: Always reject undefined references during linking
  x86/vdso: Always reject undefined references during linking
  vdso: Rework struct vdso_time_data and introduce struct vdso_clock
  vdso: Move architecture related data before basetime data
  powerpc/vdso: Prepare introduction of struct vdso_clock
  arm64/vdso: Prepare introduction of struct vdso_clock
  x86/vdso: Prepare introduction of struct vdso_clock
  time/namespace: Prepare introduction of struct vdso_clock
  vdso/namespace: Rename timens_setup_vdso_data() to reflect new vdso_clock struct
  vdso/vsyscall: Prepare introduction of struct vdso_clock
  vdso/gettimeofday: Prepare helper functions for introduction of struct vdso_clock
  vdso/gettimeofday: Prepare do_coarse_timens() for introduction of struct vdso_clock
  vdso/gettimeofday: Prepare do_coarse() for introduction of struct vdso_clock
  vdso/gettimeofday: Prepare do_hres_timens() for introduction of struct vdso_clock
  vdso/gettimeofday: Prepare do_hres() for introduction of struct vdso_clock
  vdso/gettimeofday: Prepare introduction of struct vdso_clock
  vdso/helpers: Prepare introduction of struct vdso_clock
  vdso/datapage: Define vdso_clock to prepare for multiple PTP clocks
  vdso: Make vdso_time_data cacheline aligned
  arm64: Make asm/cache.h compatible with vDSO
  ...
 2025-03-25 11:30:42 -07:00
Linus Torvalds
d5048d1176 Merge tag 'timers-core-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull timer core updates from Thomas Gleixner:

 - Fix a memory ordering issue in posix-timers

   Posix-timer lookup is lockless and reevaluates the timer validity
   under the timer lock, but the update which validates the timer is not
   protected by the timer lock. That allows the store to be reordered
   against the initialization stores, so that the lookup side can
   observe a partially initialized timer. That's mostly a theoretical
   problem, but incorrect nevertheless.

 - Fix a long standing inconsistency of the coarse time getters

   The coarse time getters read the base time of the current update
   cycle without reading the actual hardware clock. NTP frequency
   adjustment can set the base time backwards. The fine grained
   interfaces compensate this by reading the clock and applying the new
   conversion factor, but the coarse grained time getters use the base
   time directly. That allows the user to observe time going backwards.

   Cure it by always forwarding base time, when NTP changes the
   frequency with an immediate step.

 - Rework of posix-timer hashing

   The posix-timer hash is not scalable and due to the CRIU timer
   restore mechanism prone to massive contention on the global hash
   bucket lock.

   Replace the global hash lock with a fine grained per bucket locking
   scheme to address that.

 - Rework the proc/$PID/timers interface.

   /proc/$PID/timers is provided for CRIU to be able to restore a timer.
   The printout happens with sighand lock held and interrupts disabled.
   That's not required as this can be done with RCU protection as well.

 - Provide a sane mechanism for CRIU to restore a timer ID

   CRIU restores timers by creating and deleting them until the kernel
   internal per process ID counter reached the requested ID. That's
   horribly slow for sparse timer IDs.

   Provide a prctl() which allows CRIU to restore a timer with a given
   ID. When enabled the ID pointer is used as input pointer to read the
   requested ID from user space. When disabled, the normal allocation
   scheme (next ID) is active as before. This is backwards compatible
   for both kernel and user space.

 - Make hrtimer_update_function() less expensive.

   The sanity checks are valuable, but expensive for high frequency
   usage in io/uring. Make the debug checks conditional and enable them
   only when lockdep is enabled.

 - Small updates, cleanups and improvements

* tag 'timers-core-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits)
  selftests/timers: Improve skew_consistency by testing with other clockids
  timekeeping: Fix possible inconsistencies in _COARSE clockids
  posix-timers: Drop redundant memset() invocation
  selftests/timers/posix-timers: Add a test for exact allocation mode
  posix-timers: Provide a mechanism to allocate a given timer ID
  posix-timers: Dont iterate /proc/$PID/timers with sighand:: Siglock held
  posix-timers: Make per process list RCU safe
  posix-timers: Avoid false cacheline sharing
  posix-timers: Switch to jhash32()
  posix-timers: Improve hash table performance
  posix-timers: Make signal_struct:: Next_posix_timer_id an atomic_t
  posix-timers: Make lock_timer() use guard()
  posix-timers: Rework timer removal
  posix-timers: Simplify lock/unlock_timer()
  posix-timers: Use guards in a few places
  posix-timers: Remove SLAB_PANIC from kmem cache
  posix-timers: Remove a few paranoid warnings
  posix-timers: Cleanup includes
  posix-timers: Add cond_resched() to posix_timer_add() search loop
  posix-timers: Initialise timer before adding it to the hash table
  ...
 2025-03-25 10:33:23 -07:00
Pauli Virtanen
983e0e4e87 net-timestamp: COMPLETION timestamp on packet tx completion 
Add SOF_TIMESTAMPING_TX_COMPLETION, for requesting a software timestamp
when hardware reports a packet completed.

Completion tstamp is useful for Bluetooth, as hardware timestamps do not
exist in the HCI specification except for ISO packets, and the hardware
has a queue where packets may wait.  In this case the software SND
timestamp only reflects the kernel-side part of the total latency
(usually small) and queue length (usually 0 unless HW buffers
congested), whereas the completion report time is more informative of
the true latency.

It may also be useful in other cases where HW TX timestamps cannot be
obtained and user wants to estimate an upper bound to when the TX
probably happened.

Signed-off-by: Pauli Virtanen <pav@iki.fi>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
 2025-03-25 12:48:05 -04:00
Akihiko Odaki
976c2696b7 virtio_net: Split struct virtio_net_rss_config 
struct virtio_net_rss_config was less useful in actual code because of a
flexible array placed in the middle. Add new structures that split it
into two to avoid having a flexible array in the middle.

Suggested-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Link: https://patch.msgid.link/20250321-virtio-v2-1-33afb8f4640b@daynix.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-03-25 09:30:21 -07:00
Jakub Kicinski
1952e19c02 Merge tag 'wireless-next-2025-03-20' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next 
Johannes Berg says:

====================
More features for 6.15, major changes:
 * cfg80211/mac80211: fix and enable link reconfiguration
 * rtw88: support RTL8814AE/RTL8814AU
 * mt7996: preparations for MLO
 * ath12k: continued work on MLO
 * iwlwifi: add new iwlmld sub-driver/op-mode for
   some current and future devices
 * wfx: wowlan support

* tag 'wireless-next-2025-03-20' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (311 commits)
  wifi: mt76: mt7996: fix locking in mt7996_mac_sta_rc_work()
  wifi: mt76: mt76x2u: add TP-Link TL-WDN6200 ID to device table
  wifi: mt76: mt792x: re-register CHANCTX_STA_CSA only for the mt7921 series
  wifi: mt76: mt7996: Update mt7996_tx to MLO support
  wifi: mt76: mt7996: rework mt7996_ampdu_action to support MLO
  wifi: mt76: mt7996: rework set/get_tsf callabcks to support MLO
  wifi: mt76: mt7996: set vif default link_id adding/removing vif links
  wifi: mt76: mt7996: rework mt7996_mcu_beacon_inband_discov to support MLO
  wifi: mt76: mt7996: rework mt7996_mcu_add_obss_spr to support MLO
  wifi: mt76: mt7996: rework mt7996_net_fill_forward_path to support MLO
  wifi: mt76: mt7996: rework mt7996_update_mu_group to support MLO
  wifi: mt76: mt7996: rework mt7996_mac_sta_poll to support MLO
  wifi: mt76: mt7996: rework mt7996_mac_sta_rc_work to support MLO
  wifi: mt76: mt7996: remove mt7996_mac_enable_rtscts()
  wifi: mt76: mt7996: rework mt7996_sta_hw_queue_read to support MLO
  wifi: mt76: mt7996: rework mt7996_set_hw_key to support MLO
  wifi: mt76: mt7996: Add mt7996_sta_link to mt7996_mcu_add_bss_info signature
  wifi: mt76: mt7996: rework mt7996_sta_set_4addr and mt7996_sta_set_decap_offload to support MLO
  wifi: mt76: mt7996: rework mt7996_rx_get_wcid to support MLO
  wifi: mt76: mt7996: Rely on wcid_to_sta in mt7996_mac_add_txs_skb()
  ...
====================

Link: https://patch.msgid.link/20250320131106.33266-3-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-03-25 08:04:13 -07:00
Eric Dumazet
652e2c7778 net: reorganize IP MIB values (II) 
Commit 14a1968074 ("net: reorganize IP MIB values") changed
MIB values to group hot fields together.

Since then 5 new fields have been added without caring about
data locality.

This patch moves IPSTATS_MIB_OUTPKTS, IPSTATS_MIB_NOECTPKTS,
IPSTATS_MIB_ECT1PKTS, IPSTATS_MIB_ECT0PKTS, IPSTATS_MIB_CEPKTS
to the hot portion of per-cpu data.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20250320101434.3174412-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-03-25 07:37:53 -07:00
Jason Xing
9552f90835 tcp: support TCP_DELACK_MAX_US for set/getsockopt use 
Support adjusting/reading delayed ack max for socket level by using
set/getsockopt().

This option aligns with TCP_BPF_DELACK_MAX usage. Considering that bpf
option was implemented before this patch, so we need to use a standalone
new option for pure tcp set/getsockopt() use.

Add WRITE_ONCE/READ_ONCE() to prevent data-race if setsockopt()
happens to write one value to icsk_delack_max while icsk_delack_max is
being read.

Signed-off-by: Jason Xing <kerneljasonxing@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20250317120314.41404-3-kerneljasonxing@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-03-25 04:27:20 -07:00
Jason Xing
f38805c5d2 tcp: support TCP_RTO_MIN_US for set/getsockopt use 
Support adjusting/reading RTO MIN for socket level by using set/getsockopt().

This new option has the same effect as TCP_BPF_RTO_MIN, which means it
doesn't affect RTAX_RTO_MIN usage (by using ip route...). Considering that
bpf option was implemented before this patch, so we need to use a standalone
new option for pure tcp set/getsockopt() use.

When the socket is created, its icsk_rto_min is set to the default
value that is controlled by sysctl_tcp_rto_min_us. Then if application
calls setsockopt() with TCP_RTO_MIN_US flag to pass a valid value, then
icsk_rto_min will be overridden in jiffies unit.

This patch adds WRITE_ONCE/READ_ONCE to avoid data-race around
icsk_rto_min.

Signed-off-by: Jason Xing <kerneljasonxing@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20250317120314.41404-2-kerneljasonxing@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-03-25 04:27:19 -07:00
Linus Torvalds
327ecdbc0f Merge tag 'perf-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull performance events updates from Ingo Molnar:
 "Core:
   - Move perf_event sysctls into kernel/events/ (Joel Granados)
   - Use POLLHUP for pinned events in error (Namhyung Kim)
   - Avoid the read if the count is already updated (Peter Zijlstra)
   - Allow the EPOLLRDNORM flag for poll (Tao Chen)
   - locking/percpu-rwsem: Add guard support [ NOTE: this got
     (mis-)merged into the perf tree due to related work ] (Peter
     Zijlstra)

  perf_pmu_unregister() related improvements: (Peter Zijlstra)
   - Simplify the perf_event_alloc() error path
   - Simplify the perf_pmu_register() error path
   - Simplify perf_pmu_register()
   - Simplify perf_init_event()
   - Simplify perf_event_alloc()
   - Merge struct pmu::pmu_disable_count into struct
     perf_cpu_pmu_context::pmu_disable_count
   - Add this_cpc() helper
   - Introduce perf_free_addr_filters()
   - Robustify perf_event_free_bpf_prog()
   - Simplify the perf_mmap() control flow
   - Further simplify perf_mmap()
   - Remove retry loop from perf_mmap()
   - Lift event->mmap_mutex in perf_mmap()
   - Detach 'struct perf_cpu_pmu_context' and 'struct pmu' lifetimes
   - Fix perf_mmap() failure path

  Uprobes:
   - Harden x86 uretprobe syscall trampoline check (Jiri Olsa)
   - Remove redundant spinlock in uprobe_deny_signal() (Liao Chang)
   - Remove the spinlock within handle_singlestep() (Liao Chang)

  x86 Intel PMU enhancements:
   - Support PEBS counters snapshotting (Kan Liang)
   - Fix intel_pmu_read_event() (Kan Liang)
   - Extend per event callchain limit to branch stack (Kan Liang)
   - Fix system-wide LBR profiling (Kan Liang)
   - Allocate bts_ctx only if necessary (Li RongQing)
   - Apply static call for drain_pebs (Peter Zijlstra)

  x86 AMD PMU enhancements: (Ravi Bangoria)
   - Remove pointless sample period check
   - Fix ->config to sample period calculation for OP PMU
   - Fix perf_ibs_op.cnt_mask for CurCnt
   - Don't allow freq mode event creation through ->config interface
   - Add PMU specific minimum period
   - Add ->check_period() callback
   - Ceil sample_period to min_period
   - Add support for OP Load Latency Filtering
   - Update DTLB/PageSize decode logic

  Hardware breakpoints:
   - Return EOPNOTSUPP for unsupported breakpoint type (Saket Kumar
     Bhaskar)

  Hardlockup detector improvements: (Li Huafei)
   - perf_event memory leak
   - Warn if watchdog_ev is leaked

  Fixes and cleanups:
   - Misc fixes and cleanups (Andy Shevchenko, Kan Liang, Peter
     Zijlstra, Ravi Bangoria, Thorsten Blum, XieLudan)"

* tag 'perf-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (55 commits)
  perf: Fix __percpu annotation
  perf: Clean up pmu specific data
  perf/x86: Remove swap_task_ctx()
  perf/x86/lbr: Fix shorter LBRs call stacks for the system-wide mode
  perf: Supply task information to sched_task()
  perf: attach/detach PMU specific data
  locking/percpu-rwsem: Add guard support
  perf: Save PMU specific data in task_struct
  perf: Extend per event callchain limit to branch stack
  perf/ring_buffer: Allow the EPOLLRDNORM flag for poll
  perf/core: Use POLLHUP for pinned events in error
  perf/core: Use sysfs_emit() instead of scnprintf()
  perf/core: Remove optional 'size' arguments from strscpy() calls
  perf/x86/intel/bts: Check if bts_ctx is allocated when calling BTS functions
  uprobes/x86: Harden uretprobe syscall trampoline check
  watchdog/hardlockup/perf: Warn if watchdog_ev is leaked
  watchdog/hardlockup/perf: Fix perf_event memory leak
  perf/x86: Annotate struct bts_buffer::buf with __counted_by()
  perf/core: Clean up perf_try_init_event()
  perf/core: Fix perf_mmap() failure path
  ...
 2025-03-24 21:46:36 -07:00
Linus Torvalds
2f2d529458 Merge tag 'bitmap-for-6.15' of https://github.com/norov/linux 
Pull bitmap updates from Yury Norov:

 - cpumask_next_wrap() rework (me)

 - GENMASK() simplification (I Hsin)

 - rust bindings for cpumasks (Viresh and me)

 - scattered cleanups (Andy, Tamir, Vincent, Ignacio and Joel)

* tag 'bitmap-for-6.15' of https://github.com/norov/linux: (22 commits)
  cpumask: align text in comment
  riscv: fix test_and_{set,clear}_bit ordering documentation
  treewide: fix typo 'unsigned __init128' -> 'unsigned __int128'
  MAINTAINERS: add rust bindings entry for bitmap API
  rust: Add cpumask helpers
  uapi: Revert "bitops: avoid integer overflow in GENMASK(_ULL)"
  cpumask: drop cpumask_next_wrap_old()
  PCI: hv: Switch hv_compose_multi_msi_req_get_cpu() to using cpumask_next_wrap()
  scsi: lpfc: rework lpfc_next_{online,present}_cpu()
  scsi: lpfc: switch lpfc_irq_rebalance() to using cpumask_next_wrap()
  s390: switch stop_machine_yield() to using cpumask_next_wrap()
  padata: switch padata_find_next() to using cpumask_next_wrap()
  cpumask: use cpumask_next_wrap() where appropriate
  cpumask: re-introduce cpumask_next{,_and}_wrap()
  cpumask: deprecate cpumask_next_wrap()
  powerpc/xmon: simplify xmon_batch_next_cpu()
  ibmvnic: simplify ibmvnic_set_queue_affinity()
  virtio_net: simplify virtnet_set_affinity()
  objpool: rework objpool_pop()
  cpumask: add for_each_{possible,online}_cpu_wrap
  ...
 2025-03-24 19:11:58 -07:00
Linus Torvalds
f81c2b8150 Merge tag 'docs-6.15' of git://git.lwn.net/linux 
Pull documentation updates from Jonathan Corbet:
 "It has been a reasonably busy cycle for docs...

   - Significant changes throughout the tree to bring Python code up to
     current standards and raise the minimum Python required to 3.9

     Much of this is preparatory to replacing the ancient Perl
     scripts/kernel-doc horror with a slightly less horrifying Python
     implementation, expected for 6.16

   - Update the minimum Sphinx required to 3.4.3, allowing us to remove
     a bunch of older compatibility code

   - Rework and improve the generation of the ABI documentation

  (All of the above done by Mauro)

   - Lots of translation updates. Alex Shi and Yanteng Si are taking on
     responsibility for the Chinese translations going forward; that
     work will still get to you via docs-next

   - Try to standardize the format for indicating a developer's
     affiliation in commit tags

   - Clarify the TAB's role in CoC enforcement actions

   - Try to spell out the rules for when a commit tag can name another
     developer without their explicit permission

  Plus lots of other typo fixes and updates"

* tag 'docs-6.15' of git://git.lwn.net/linux: (98 commits)
  docs/zh_CN: fix spelling mistake
  docs/Chinese: change the disclaimer words
  docs/zh_CN: Add snp-tdx-threat-model index Chinese translation
  docs: driver-api: firmware: clarify userspace requirements
  docs: clarify rules wrt tagging other people
  docs: Remove outdated highuid.rst documentation
  Documentation: dma-buf: heaps: Add heap name definitions
  docs/.../submit-checklist: Use Documentation/admin-guide/abi.rst for cross-ref of README
  docs: Correct installation instruction
  Documentation: kcsan: fix "Plain Accesses and Data Races" URL in kcsan.rst
  Documentation/CoC: Spell out the TAB role in enforcement decisions
  Documentation: ocxl.rst: Update consortium site
  scripts: get_feat.pl: substitute s390x with s390
  scripts/kernel-doc: drop dead code for Wcontents_before_sections
  scripts/kernel-doc: don't add not needed new lines
  docs: driver-api/infiniband.rst: fix Kerneldoc markup
  drivers: firewire: firewire-cdev.h: fix identation on a kernel-doc markup
  drivers: media: intel-ipu3.h: fix identation on a kernel-doc markup
  include/asm-generic/io.h: fix kerneldoc markup
  Docs/arch/arm64: Fix spelling in amu.rst
  ...
 2025-03-24 18:42:27 -07:00
Linus Torvalds
fc13a78e1f Merge tag 'hardening-v6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux 
Pull hardening updates from Kees Cook:
 "As usual, it's scattered changes all over. Patches touching things
  outside of our traditional areas in the tree have been Acked by
  maintainers or were trivial changes:

   - loadpin: remove unsupported MODULE_COMPRESS_NONE (Arulpandiyan
     Vadivel)

   - samples/check-exec: Fix script name (Mickaël Salaün)

   - yama: remove needless locking in yama_task_prctl() (Oleg Nesterov)

   - lib/string_choices: Sort by function name (R Sundar)

   - hardening: Allow default HARDENED_USERCOPY to be set at compile
     time (Mel Gorman)

   - uaccess: Split out compile-time checks into ucopysize.h

   - kbuild: clang: Support building UM with SUBARCH=i386

   - x86: Enable i386 FORTIFY_SOURCE on Clang 16+

   - ubsan/overflow: Rework integer overflow sanitizer option

   - Add missing __nonstring annotations for callers of
     memtostr*()/strtomem*()

   - Add __must_be_noncstr() and have memtostr*()/strtomem*() check for
     it

   - Introduce __nonstring_array for silencing future GCC 15 warnings"

* tag 'hardening-v6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (26 commits)
  compiler_types: Introduce __nonstring_array
  hardening: Enable i386 FORTIFY_SOURCE on Clang 16+
  x86/build: Remove -ffreestanding on i386 with GCC
  ubsan/overflow: Enable ignorelist parsing and add type filter
  ubsan/overflow: Enable pattern exclusions
  ubsan/overflow: Rework integer overflow sanitizer option to turn on everything
  samples/check-exec: Fix script name
  yama: don't abuse rcu_read_lock/get_task_struct in yama_task_prctl()
  kbuild: clang: Support building UM with SUBARCH=i386
  loadpin: remove MODULE_COMPRESS_NONE as it is no longer supported
  lib/string_choices: Rearrange functions in sorted order
  string.h: Validate memtostr*()/strtomem*() arguments more carefully
  compiler.h: Introduce __must_be_noncstr()
  nilfs2: Mark on-disk strings as nonstring
  uapi: stddef.h: Introduce __kernel_nonstring
  x86/tdx: Mark message.bytes as nonstring
  string: kunit: Mark nonstring test strings as __nonstring
  scsi: qla2xxx: Mark device strings as nonstring
  scsi: mpt3sas: Mark device strings as nonstring
  scsi: mpi3mr: Mark device strings as nonstring
  ...
 2025-03-24 15:18:08 -07:00
Linus Torvalds
4f773fcbdb Merge tag 'execve-v6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux 
Pull execve updates from Kees Cook:

 - elf: Define and use note name macros (Akihiko Odaki)

 - elf: add remaining SHF_ flag macros (Timur Tabi)

 - binfmt: Remove loader from linux_binprm struct (Yonatan Goldschmidt)

 - binfmt_elf_fdpic: fix variable set but not used warning (sunliming)

* tag 'execve-v6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  binfmt_elf_fdpic: fix variable set but not used warning
  elf: add remaining SHF_ flag macros
  binfmt: Remove loader from linux_binprm struct
  crash: Remove KEXEC_CORE_NOTE_NAME
  s390/crash: Use note name macros
  crash: Use note name macros
  powerpc/crash: Use note name macros
  binfmt_elf: Use note name macros
  elf: Define note name macros
 2025-03-24 14:58:04 -07:00
Linus Torvalds
df00ded23a Merge tag 'vfs-6.15-rc1.pidfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs 
Pull vfs pidfs updates from Christian Brauner:

 - Allow retrieving exit information after a process has been reaped
   through pidfds via the new PIDFD_INTO_EXIT extension for the
   PIDFD_GET_INFO ioctl. Various tools need access to information about
   a process/task even after it has already been reaped.

   Pidfd polling allows waiting on either task exit or for a task to
   have been reaped. The contract for PIDFD_INFO_EXIT is simply that
   EPOLLHUP must be observed before exit information can be retrieved,
   i.e., exit information is only provided once the task has been reaped
   and then can be retrieved as long as the pidfd is open.

 - Add PIDFD_SELF_{THREAD,THREAD_GROUP} sentinels allowing userspace to
   forgo allocating a file descriptor for their own process. This is
   useful in scenarios where users want to act on their own process
   through pidfds and is akin to AT_FDCWD.

 - Improve premature thread-group leader and subthread exec behavior
   when polling on pidfds:

   (1) During a multi-threaded exec by a subthread, i.e.,
       non-thread-group leader thread, all other threads in the
       thread-group including the thread-group leader are killed and the
       struct pid of the thread-group leader will be taken over by the
       subthread that called exec. IOW, two tasks change their TIDs.

   (2) A premature thread-group leader exit means that the thread-group
       leader exited before all of the other subthreads in the
       thread-group have exited.

   Both cases lead to inconsistencies for pidfd polling with
   PIDFD_THREAD. Any caller that holds a PIDFD_THREAD pidfd to the
   current thread-group leader may or may not see an exit notification
   on the file descriptor depending on when poll is performed. If the
   poll is performed before the exec of the subthread has concluded an
   exit notification is generated for the old thread-group leader. If
   the poll is performed after the exec of the subthread has concluded
   no exit notification is generated for the old thread-group leader.

   The correct behavior is to simply not generate an exit notification
   on the struct pid of a subhthread exec because the struct pid is
   taken over by the subthread and thus remains alive.

   But this is difficult to handle because a thread-group may exit
   premature as mentioned in (2). In that case an exit notification is
   reliably generated but the subthreads may continue to run for an
   indeterminate amount of time and thus also may exec at some point.

   After this pull no exit notifications will be generated for a
   PIDFD_THREAD pidfd for a thread-group leader until all subthreads
   have been reaped. If a subthread should exec before no exit
   notification will be generated until that task exits or it creates
   subthreads and repeates the cycle.

   This means an exit notification indicates the ability for the father
   to reap the child.

* tag 'vfs-6.15-rc1.pidfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (25 commits)
  selftests/pidfd: third test for multi-threaded exec polling
  selftests/pidfd: second test for multi-threaded exec polling
  selftests/pidfd: first test for multi-threaded exec polling
  pidfs: improve multi-threaded exec and premature thread-group leader exit polling
  pidfs: ensure that PIDFS_INFO_EXIT is available
  selftests/pidfd: add seventh PIDFD_INFO_EXIT selftest
  selftests/pidfd: add sixth PIDFD_INFO_EXIT selftest
  selftests/pidfd: add fifth PIDFD_INFO_EXIT selftest
  selftests/pidfd: add fourth PIDFD_INFO_EXIT selftest
  selftests/pidfd: add third PIDFD_INFO_EXIT selftest
  selftests/pidfd: add second PIDFD_INFO_EXIT selftest
  selftests/pidfd: add first PIDFD_INFO_EXIT selftest
  selftests/pidfd: expand common pidfd header
  pidfs/selftests: ensure correct headers for ioctl handling
  selftests/pidfd: fix header inclusion
  pidfs: allow to retrieve exit information
  pidfs: record exit code and cgroupid at exit
  pidfs: use private inode slab cache
  pidfs: move setting flags into pidfs_alloc_file()
  pidfd: rely on automatic cleanup in __pidfd_prepare()
  ...
 2025-03-24 10:16:37 -07:00
Linus Torvalds
fd101da676 Merge tag 'vfs-6.15-rc1.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs 
Pull vfs mount updates from Christian Brauner:

 - Mount notifications

   The day has come where we finally provide a new api to listen for
   mount topology changes outside of /proc/<pid>/mountinfo. A mount
   namespace file descriptor can be supplied and registered with
   fanotify to listen for mount topology changes.

   Currently notifications for mount, umount and moving mounts are
   generated. The generated notification record contains the unique
   mount id of the mount.

   The listmount() and statmount() api can be used to query detailed
   information about the mount using the received unique mount id.

   This allows userspace to figure out exactly how the mount topology
   changed without having to generating diffs of /proc/<pid>/mountinfo
   in userspace.

 - Support O_PATH file descriptors with FSCONFIG_SET_FD in the new mount
   api

 - Support detached mounts in overlayfs

   Since last cycle we support specifying overlayfs layers via file
   descriptors. However, we don't allow detached mounts which means
   userspace cannot user file descriptors received via
   open_tree(OPEN_TREE_CLONE) and fsmount() directly. They have to
   attach them to a mount namespace via move_mount() first.

   This is cumbersome and means they have to undo mounts via umount().
   Allow them to directly use detached mounts.

 - Allow to retrieve idmappings with statmount

   Currently it isn't possible to figure out what idmapping has been
   attached to an idmapped mount. Add an extension to statmount() which
   allows to read the idmapping from the mount.

 - Allow creating idmapped mounts from mounts that are already idmapped

   So far it isn't possible to allow the creation of idmapped mounts
   from already idmapped mounts as this has significant lifetime
   implications. Make the creation of idmapped mounts atomic by allow to
   pass struct mount_attr together with the open_tree_attr() system call
   allowing to solve these issues without complicating VFS lookup in any
   way.

   The system call has in general the benefit that creating a detached
   mount and applying mount attributes to it becomes an atomic operation
   for userspace.

 - Add a way to query statmount() for supported options

   Allow userspace to query which mount information can be retrieved
   through statmount().

 - Allow superblock owners to force unmount

* tag 'vfs-6.15-rc1.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (21 commits)
  umount: Allow superblock owners to force umount
  selftests: add tests for mount notification
  selinux: add FILE__WATCH_MOUNTNS
  samples/vfs: fix printf format string for size_t
  fs: allow changing idmappings
  fs: add kflags member to struct mount_kattr
  fs: add open_tree_attr()
  fs: add copy_mount_setattr() helper
  fs: add vfs_open_tree() helper
  statmount: add a new supported_mask field
  samples/vfs: add STATMOUNT_MNT_{G,U}IDMAP
  selftests: add tests for using detached mount with overlayfs
  samples/vfs: check whether flag was raised
  statmount: allow to retrieve idmappings
  uidgid: add map_id_range_up()
  fs: allow detached mounts in clone_private_mount()
  selftests/overlayfs: test specifying layers as O_PATH file descriptors
  fs: support O_PATH fds with FSCONFIG_SET_FD
  vfs: add notifications for mount attach and detach
  fanotify: notify on mount attach and detach
  ...
 2025-03-24 09:34:10 -07:00
Nuno Das Neves
621191d709 Drivers: hv: Introduce mshv_root module to expose /dev/mshv to VMMs 
Provide a set of IOCTLs for creating and managing child partitions when
running as root partition on Hyper-V. The new driver is enabled via
CONFIG_MSHV_ROOT.

A brief overview of the interface:

MSHV_CREATE_PARTITION is the entry point, returning a file descriptor
representing a child partition. IOCTLs on this fd can be used to map
memory, create VPs, etc.

Creating a VP returns another file descriptor representing that VP which
in turn has another set of corresponding IOCTLs for running the VP,
getting/setting state, etc.

MSHV_ROOT_HVCALL is a generic "passthrough" hypercall IOCTL which can be
used for a number of partition or VP hypercalls. This is for hypercalls
that do not affect any state in the kernel driver, such as getting and
setting VP registers and partition properties, translating addresses,
etc. It is "passthrough" because the binary input and output for the
hypercall is only interpreted by the VMM - the kernel driver does
nothing but insert the VP and partition id where necessary (which are
always in the same place), and execute the hypercall.

Co-developed-by: Anirudh Rayabharam <anrayabh@linux.microsoft.com>
Signed-off-by: Anirudh Rayabharam <anrayabh@linux.microsoft.com>
Co-developed-by: Jinank Jain <jinankjain@microsoft.com>
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
Co-developed-by: Mukesh Rathor <mrathor@linux.microsoft.com>
Signed-off-by: Mukesh Rathor <mrathor@linux.microsoft.com>
Co-developed-by: Muminul Islam <muislam@microsoft.com>
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Co-developed-by: Praveen K Paladugu <prapal@linux.microsoft.com>
Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
Co-developed-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com>
Signed-off-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com>
Co-developed-by: Wei Liu <wei.liu@kernel.org>
Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com>
Reviewed-by: Roman Kisel <romank@linux.microsoft.com>
Link: https://lore.kernel.org/r/1741980536-3865-11-git-send-email-nunodasneves@linux.microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <1741980536-3865-11-git-send-email-nunodasneves@linux.microsoft.com>
 2025-03-21 18:24:22 +00:00
Arnd Bergmann
3fed9fda15 net: remove sb1000 cable modem driver 
This one is hilariously outdated, it provided a faster downlink over
TV cable for users of analog modems in the 1990s, through an ISA card.

The web page for the userspace tools has been broken for 25 years, and
the driver has only ever seen mechanical updates.

Link: http://web.archive.org/web/20000611165545/http://home.adelphia.net:80/~siglercm/sb1000.html
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250312085236.2531870-1-arnd@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
 2025-03-21 17:11:54 +01:00
Jens Axboe
07754bfd9a io_uring: enable toggle of iowait usage when waiting on CQEs 
By default, io_uring marks a waiting task as being in iowait, if it's
sleeping waiting on events and there are pending requests. This isn't
necessarily always useful, and may be confusing on non-storage setups
where iowait isn't expected. It can also cause extra power usage, by
preventing the CPU from entering lower sleep states.

This adds a new enter flag, IORING_ENTER_NO_IOWAIT. If set, then
io_uring will not account the sleeping task as being in iowait. If the
kernel supports this feature, then it will be marked by having the
IORING_FEAT_NO_IOWAIT feature flag set.

As the kernel currently does not support separating the iowait
accounting and CPU frequency boosting, the IORING_ENTER_NO_IOWAIT
controls both of these at the same time. In the future, if those do end
up being split, then it'd be possible to control them separately.
However, it seems more likely that the kernel will decouple iowait and
CPU frequency boosting anyway.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2025-03-20 20:01:03 -06:00
Oliver Upton
4f2774c57a Merge branch 'kvm-arm64/writable-midr' into kvmarm/next 
* kvm-arm64/writable-midr:
  : Writable implementation ID registers, courtesy of Sebastian Ott
  :
  : Introduce a new capability that allows userspace to set the
  : ID registers that identify a CPU implementation: MIDR_EL1, REVIDR_EL1,
  : and AIDR_EL1. Also plug a hole in KVM's trap configuration where
  : SMIDR_EL1 was readable at EL1, despite the fact that KVM does not
  : support SME.
  KVM: arm64: Fix documentation for KVM_CAP_ARM_WRITABLE_IMP_ID_REGS
  KVM: arm64: Copy MIDR_EL1 into hyp VM when it is writable
  KVM: arm64: Copy guest CTR_EL0 into hyp VM
  KVM: selftests: arm64: Test writes to MIDR,REVIDR,AIDR
  KVM: arm64: Allow userspace to change the implementation ID registers
  KVM: arm64: Load VPIDR_EL2 with the VM's MIDR_EL1 value
  KVM: arm64: Maintain per-VM copy of implementation ID regs
  KVM: arm64: Set HCR_EL2.TID1 unconditionally

Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
 2025-03-19 14:54:32 -07:00
Christian Brauner
68db272741 pidfs: ensure that PIDFS_INFO_EXIT is available 
When we currently create a pidfd we check that the task hasn't been
reaped right before we create the pidfd. But it is of course possible
that by the time we return the pidfd to userspace the task has already
been reaped since we don't check again after having created a dentry for
it.

This was fine until now because that race was meaningless. But now that
we provide PIDFD_INFO_EXIT it is a problem because it is possible that
the kernel returns a reaped pidfd and it depends on the race whether
PIDFD_INFO_EXIT information is available. This depends on if the task
gets reaped before or after a dentry has been attached to struct pid.

Make this consistent and only returned pidfds for reaped tasks if
PIDFD_INFO_EXIT information is available. This is done by performing
another check whether the task has been reaped right after we attached a
dentry to struct pid.

Since pidfs_exit() is called before struct pid's task linkage is removed
the case where the task got reaped but a dentry was already attached to
struct pid and exit information was recorded and published can be
handled correctly. In that case we do return a pidfd for a reaped task
like we would've before.

Link: https://lore.kernel.org/r/20250316-kabel-fehden-66bdb6a83436@brauner
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
 2025-03-19 14:40:18 +01:00
Paolo Abeni
ed6bcbe39e Merge tag 'batadv-next-pullrequest-20250313' of git://git.open-mesh.org/linux-merge 
Simon Wunderlich says:

====================
This feature/cleanup patchset includes the following patches:

 - bump version strings, by Simon Wunderlich

 - drop batadv_priv_debug_log struct, by Sven Eckelmann

 - adopt netdev_hold() / netdev_put(), by Eric Dumazet

 - add support for jumbo frames, by Sven Eckelmann

 - use consistent name for mesh interface, by Sven Eckelmann

 - cleanup B.A.T.M.A.N. IV OGM aggregation handling,
   by Sven Eckelmann (4 patches)

 - add missing newlines for log macros, by Sven Eckelmann

* tag 'batadv-next-pullrequest-20250313' of git://git.open-mesh.org/linux-merge:
  batman-adv: add missing newlines for log macros
  batman-adv: Limit aggregation size to outgoing MTU
  batman-adv: Use actual packet count for aggregated packets
  batman-adv: Switch to bitmap helper for aggregation handling
  batman-adv: Limit number of aggregated packets directly
  batman-adv: Use consistent name for mesh interface
  batman-adv: Add support for jumbo frames
  batman-adv: adopt netdev_hold() / netdev_put()
  batman-adv: Drop batadv_priv_debug_log struct
  batman-adv: Start new development cycle
====================

Link: https://patch.msgid.link/20250313164519.72808-1-sw@simonwunderlich.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
 2025-03-18 12:10:20 +01:00
Johannes Berg
c924c5e9b8 Merge net-next/main to resolve conflicts 
There are a few conflicts between the work that went
into wireless and that's here now, resolve them.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
 2025-03-18 09:46:36 +01:00
Ilpo Järvinen
2c2f08d31d tcp: extend TCP flags to allow AE bit/ACE field 
With AccECN, there's one additional TCP flag to be used (AE)
and ACE field that overloads the definition of AE, CWR, and
ECE flags. As tcp_flags was previously only 1 byte, the
byte-order stuff needs to be added to it's handling.

Signed-off-by: Ilpo Järvinen <ij@kernel.org>
Signed-off-by: Chia-Yu Chang <chia-yu.chang@nokia-bell-labs.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2025-03-17 13:49:46 +00:00
Kan Liang
c53e14f1ea perf: Extend per event callchain limit to branch stack 
The commit 97c79a38cd ("perf core: Per event callchain limit")
introduced a per-event term to allow finer tuning of the depth of
callchains to save space.

It should be applied to the branch stack as well. For example, autoFDO
collections require maximum LBR entries. In the meantime, other
system-wide LBR users may only be interested in the latest a few number
of LBRs. A per-event LBR depth would save the perf output buffer.

The patch simply drops the uninterested branches, but HW still collects
the maximum branches. There may be a model-specific optimization that
can reduce the HW depth for some cases to reduce the overhead further.
But it isn't included in the patch set. Because it's not useful for all
cases. For example, ARCH LBR can utilize the PEBS and XSAVE to collect
LBRs. The depth should have less impact on the collecting overhead.
The model-specific optimization may be implemented later separately.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20250310181536.3645382-1-kan.liang@linux.intel.com
 2025-03-17 11:23:36 +01:00
Thomas Gleixner
ec2d0c0462 posix-timers: Provide a mechanism to allocate a given timer ID 
Checkpoint/Restore in Userspace (CRIU) requires to reconstruct posix timers
with the same timer ID on restore. It uses sys_timer_create() and relies on
the monotonic increasing timer ID provided by this syscall. It creates and
deletes timers until the desired ID is reached. This is can loop for a long
time, when the checkpointed process had a very sparse timer ID range.

It has been debated to implement a new syscall to allow the creation of
timers with a given timer ID, but that's tideous due to the 32/64bit compat
issues of sigevent_t and of dubious value.

The restore mechanism of CRIU creates the timers in a state where all
threads of the restored process are held on a barrier and cannot issue
syscalls. That means the restorer task has exclusive control.

This allows to address this issue with a prctl() so that the restorer
thread can do:

   if (prctl(PR_TIMER_CREATE_RESTORE_IDS, PR_TIMER_CREATE_RESTORE_IDS_ON))
      goto linear_mode;
   create_timers_with_explicit_ids();
   prctl(PR_TIMER_CREATE_RESTORE_IDS, PR_TIMER_CREATE_RESTORE_IDS_OFF);
   
This is backwards compatible because the prctl() fails on older kernels and
CRIU can fall back to the linear timer ID mechanism. CRIU versions which do
not know about the prctl() just work as before.

Implement the prctl() and modify timer_create() so that it copies the
requested timer ID from userspace by utilizing the existing timer_t
pointer, which is used to copy out the allocated timer ID on success.

If the prctl() is disabled, which it is by default, timer_create() works as
before and does not try to read from the userspace pointer.

There is no problem when a broken or rogue user space application enables
the prctl(). If the user space pointer does not contain a valid ID, then
timer_create() fails. If the data is not initialized, but constains a
random valid ID, timer_create() will create that random timer ID or fail if
the ID is already given out. 
 
As CRIU must use the raw syscall to avoid manipulating the internal state
of the restored process, this has no library dependencies and can be
adopted by CRIU right away.

Recreating two timers with IDs 1000000 and 2000000 takes 1.5 seconds with
the create/delete method. With the prctl() it takes 3 microseconds.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Reviewed-by: Cyrill Gorcunov <gorcunov@gmail.com>
Tested-by: Cyrill Gorcunov <gorcunov@gmail.com>
Link: https://lore.kernel.org/all/87jz8vz0en.ffs@tglx
 2025-03-13 12:07:18 +01:00
Johannes Berg
cf12d3d71e wifi: cfg80211: improve supported_selector documentation 
Improve the documentation for supported BSS selectors to make it more
precise.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250308225541.ba402ff47314.I502b56111b62ea0be174ae76bd03684ae1d4aefb@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
 2025-03-11 10:53:10 +01:00
Anjaneyulu
cf4bd16088 wifi: cfg80211: allow IR in 20 MHz configurations 
Some regulatory bodies doesn't allow IR (initiate radioation) on a
specific subband, but allows it for channels with a bandwidth of 20 MHz.
Add a channel flag that indicates that, and consider it in
cfg80211_reg_check_beaconing.

While on it, fix the kernel doc of enum nl80211_reg_rule_flags and
change it to use BIT().

Signed-off-by: Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Co-developed-by: Somashekhar Puttagangaiah <somashekhar.puttagangaiah@intel.com>
Signed-off-by: Somashekhar Puttagangaiah <somashekhar.puttagangaiah@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250308225541.d3ab352a73ff.I8a8f79e1c9eb74936929463960ee2a324712fe51@changeid
[fix typo]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
 2025-03-11 10:53:01 +01:00
Johannes Berg
969241371f wifi: cfg80211: allow setting extended MLD capa/ops 
Some extended MLD capabilities and operations bits (currently
the "BTM MLD Recommendataion For Multiple APs Support" bit)
may depend on userspace capabilities. Allow userspace to pass
the values for this field that it supports to the association
and link reconfiguration operations.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Link: https://patch.msgid.link/20250308225541.bd52078b5f65.I4dd8f53b0030db7ea87a2e0920989e7e2c7b5345@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
 2025-03-11 10:51:59 +01:00
Timur Tabi
b0db1ed176 elf: add remaining SHF_ flag macros 
Add the remaining SHF_ flags, as listed in the "Executable and
Linkable Format" Wikipedia page and the System V Application Binary
Interface[1]. This allows drivers to load and parse ELF images that use
some of those flags.

In particular, an upcoming change to the Nouveau GPU driver will
use some of the flags.

Link: https://refspecs.linuxfoundation.org/elf/gabi4+/ch4.sheader.html#sh_flags [1]
Signed-off-by: Timur Tabi <ttabi@nvidia.com>
Link: https://lore.kernel.org/r/20250307171417.267488-1-ttabi@nvidia.com
Signed-off-by: Kees Cook <kees@kernel.org>
 2025-03-07 12:20:28 -08:00
Mark Brown
c6141ba011 ASoC: Merge up fixes 
Merge branch 'for-6.14' of
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into
asoc-6.15 to avoid a bunch of add/add conflicts.
 2025-03-05 19:10:50 +00:00
Vincent Mailhol
0312e94abe treewide: fix typo 'unsigned __init128' -> 'unsigned __int128' 
"int" was misspelled as "init" the code comments in the bits.h and
const.h files. Fix the typo.

CC: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Yury Norov <yury.norov@gmail.com>
 2025-03-05 12:00:03 -05:00
Christian Brauner
7477d7dce4 pidfs: allow to retrieve exit information 
Some tools like systemd's jounral need to retrieve the exit and cgroup
information after a process has already been reaped. This can e.g.,
happen when retrieving a pidfd via SCM_PIDFD or SCM_PEERPIDFD.

Link: https://lore.kernel.org/r/20250305-work-pidfs-kill_on_last_close-v3-6-c8c3d8361705@kernel.org
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
 2025-03-05 13:26:17 +01:00
Jakub Kicinski
71f8992e34 Merge tag 'wireless-next-2025-03-04-v2' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next 
Johannes Berg says:

====================
First 6.15 material:
 * cfg80211/mac80211
   - remove cooked monitor support
   - strict mode for better AP testing
   - basic EPCS support
   - OMI RX bandwidth reduction support
 * rtw88
   - preparation for RTL8814AU support
 * rtw89
   - use wiphy_lock/wiphy_work
   - preparations for MLO
   - BT-Coex improvements
   - regulatory support in firmware files
 * iwlwifi
   - preparations for the new iwlmld sub-driver

* tag 'wireless-next-2025-03-04-v2' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (128 commits)
  wifi: iwlwifi: remove mld/roc.c
  wifi: mac80211: refactor populating mesh related fields in sinfo
  wifi: cfg80211: reorg sinfo structure elements for mesh
  wifi: iwlwifi: Fix spelling mistake "Increate" -> "Increase"
  wifi: iwlwifi: add Debug Host Command APIs
  wifi: iwlwifi: add IWL_MAX_NUM_IGTKS macro
  wifi: iwlwifi: add OMI bandwidth reduction APIs
  wifi: iwlwifi: remove mvm prefix from iwl_mvm_d3_end_notif
  wifi: iwlwifi: remember if the UATS table was read successfully
  wifi: iwlwifi: export iwl_get_lari_config_bitmap
  wifi: iwlwifi: add support for external 32 KHz clock
  wifi: iwlwifi: mld: add a debug level for EHT prints
  wifi: iwlwifi: mld: add a debug level for PTP prints
  wifi: iwlwifi: remove mvm prefix from iwl_mvm_esr_mode_notif
  wifi: iwlwifi: use 0xff instead of 0xffffffff for invalid
  wifi: iwlwifi: location api cleanup
  wifi: cfg80211: expose update timestamp to drivers
  wifi: mac80211: add ieee80211_iter_chan_contexts_mtx
  wifi: mac80211: fix integer overflow in hwmp_route_info_get()
  wifi: mac80211: Fix possible integer promotion issue
  ...
====================

Link: https://patch.msgid.link/20250304125605.127914-3-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-03-04 08:50:42 -08:00
Mauro Carvalho Chehab
62d6d20257 drivers: firewire: firewire-cdev.h: fix identation on a kernel-doc markup 
The description of @tstamp parameter has one line that starts at the
beginning. This moves such line to the description, which is not the
intent here.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/8238bed1c0375e6b389a8cafe1ad99fdeb1cb1f2.1740387599.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
 2025-03-04 09:47:36 -07:00
Nicolas Dichtel
4754affe0b net: advertise netns_immutable property via netlink 
Since commit 05c1280a2b ("netdev_features: convert NETIF_F_NETNS_LOCAL to
dev->netns_local"), there is no way to see if the netns_immutable property
s set on a device. Let's add a netlink attribute to advertise it.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
 2025-03-04 12:44:48 +01:00
Thomas Weißschuh
e0d15896f5 elf, uapi: Add types ElfXX_Verdef and ElfXX_Veraux 
The types are used by tools/testing/selftests/vDSO/parse_vdso.c.

To be able to build the vDSO selftests without a libc dependency,
add the types to the kernels own UAPI headers.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kees Cook <kees@kernel.org>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://refspecs.linuxfoundation.org/LSB_5.0.0/LSB-Core-generic/LSB-Core-generic/symversion.html#VERDEFEXTS
Link: https://lore.kernel.org/all/20250226-parse_vdso-nolibc-v2-6-28e14e031ed8@linutronix.de
 2025-03-03 20:00:12 +01:00
Thomas Weißschuh
2c86f604f8 elf, uapi: Add type ElfXX_Versym 
The type is used by tools/testing/selftests/vDSO/parse_vdso.c.

To be able to build the vDSO selftests without a libc dependency,
add the type to the kernels own UAPI headers. As documented by elf(5).

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kees Cook <kees@kernel.org>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/all/20250226-parse_vdso-nolibc-v2-5-28e14e031ed8@linutronix.de
 2025-03-03 20:00:11 +01:00
Thomas Weißschuh
049d19bb38 elf, uapi: Add definitions for VER_FLG_BASE and VER_FLG_WEAK 
The definitions are used by tools/testing/selftests/vDSO/parse_vdso.c.

To be able to build the vDSO selftests without a libc dependency,
add the definitions to the kernels own UAPI headers.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kees Cook <kees@kernel.org>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://docs.oracle.com/cd/E19683-01/816-1386/chapter6-80869/index.html
Link: https://lore.kernel.org/all/20250226-parse_vdso-nolibc-v2-4-28e14e031ed8@linutronix.de
 2025-03-03 20:00:11 +01:00
Thomas Weißschuh
50881d1469 elf, uapi: Add definition for DT_GNU_HASH 
The definition is used by tools/testing/selftests/vDSO/parse_vdso.c.

To be able to build the vDSO selftests without a libc dependency,
add the define to the kernels own UAPI headers.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kees Cook <kees@kernel.org>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://refspecs.linuxbase.org/LSB_5.0.0/LSB-Core-generic/LSB-Core-generic/libc-ddefs.html
Link: https://lore.kernel.org/all/20250226-parse_vdso-nolibc-v2-3-28e14e031ed8@linutronix.de
 2025-03-03 20:00:11 +01:00
Thomas Weißschuh
c413114096 elf, uapi: Add definition for STN_UNDEF 
The definition is used by tools/testing/selftests/vDSO/parse_vdso.c.

To be able to build the vDSO selftests without a libc dependency,
add the definition to the kernels own UAPI headers.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kees Cook <kees@kernel.org>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://refspecs.linuxfoundation.org/elf/gabi4+/ch4.symtab.html
Link: https://lore.kernel.org/all/20250226-parse_vdso-nolibc-v2-2-28e14e031ed8@linutronix.de
 2025-03-03 20:00:11 +01:00