summaryrefslogtreecommitdiff
path: root/Documentation/userspace-api
AgeCommit message (Collapse)Author
18 hoursMerge tag 'net-next-6.18' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Paolo Abeni: "Core & protocols: - Improve drop account scalability on NUMA hosts for RAW and UDP sockets and the backlog, almost doubling the Pps capacity under DoS - Optimize the UDP RX performance under stress, reducing contention, revisiting the binary layout of the involved data structs and implementing NUMA-aware locking. This improves UDP RX performance by an additional 50%, even more under extreme conditions - Add support for PSP encryption of TCP connections; this mechanism has some similarities with IPsec and TLS, but offers superior HW offloads capabilities - Ongoing work to support Accurate ECN for TCP. AccECN allows more than one congestion notification signal per RTT and is a building block for Low Latency, Low Loss, and Scalable Throughput (L4S) - Reorganize the TCP socket binary layout for data locality, reducing the number of touched cachelines in the fastpath - Refactor skb deferral free to better scale on large multi-NUMA hosts, this improves TCP and UDP RX performances significantly on such HW - Increase the default socket memory buffer limits from 256K to 4M to better fit modern link speeds - Improve handling of setups with a large number of nexthop, making dump operating scaling linearly and avoiding unneeded synchronize_rcu() on delete - Improve bridge handling of VLAN FDB, storing a single entry per bridge instead of one entry per port; this makes the dump order of magnitude faster on large switches - Restore IP ID correctly for encapsulated packets at GSO segmentation time, allowing GRO to merge packets in more scenarios - Improve netfilter matching performance on large sets - Improve MPTCP receive path performance by leveraging recently introduced core infrastructure (skb deferral free) and adopting recent TCP autotuning changes - Allow bridges to redirect to a backup port when the bridge port is administratively down - Introduce MPTCP 'laminar' endpoint that con be used only once per connection and simplify common MPTCP setups - Add RCU safety to dst->dev, closing a lot of possible races - A significant crypto library API for SCTP, MPTCP and IPv6 SR, reducing code duplication - Supports pulling data from an skb frag into the linear area of an XDP buffer Things we sprinkled into general kernel code: - Generate netlink documentation from YAML using an integrated YAML parser Driver API: - Support using IPv6 Flow Label in Rx hash computation and RSS queue selection - Introduce API for fetching the DMA device for a given queue, allowing TCP zerocopy RX on more H/W setups - Make XDP helpers compatible with unreadable memory, allowing more easily building DevMem-enabled drivers with a unified XDP/skbs datapath - Add a new dedicated ethtool callback enabling drivers to provide the number of RX rings directly, improving efficiency and clarity in RX ring queries and RSS configuration - Introduce a burst period for the health reporter, allowing better handling of multiple errors due to the same root cause - Support for DPLL phase offset exponential moving average, controlling the average smoothing factor Device drivers: - Add a new Huawei driver for 3rd gen NIC (hinic3) - Add a new SpacemiT driver for K1 ethernet MAC - Add a generic abstraction for shared memory communication devices (dibps) - Ethernet high-speed NICs: - nVidia/Mellanox: - Use multiple per-queue doorbell, to avoid MMIO contention issues - support adjacent functions, allowing them to delegate their SR-IOV VFs to sibling PFs - support RSS for IPSec offload - support exposing raw cycle counters in PTP and mlx5 - support for disabling host PFs. - Intel (100G, ice, idpf): - ice: support for SRIOV VFs over an Active-Active link aggregate - ice: support for firmware logging via debugfs - ice: support for Earliest TxTime First (ETF) hardware offload - idpf: support basic XDP functionalities and XSk - Broadcom (bnxt): - support Hyper-V VF ID - dynamic SRIOV resource allocations for RoCE - Meta (fbnic): - support queue API, zero-copy Rx and Tx - support basic XDP functionalities - devlink health support for FW crashes and OTP mem corruptions - expand hardware stats coverage to FEC, PHY, and Pause - Wangxun: - support ethtool coalesce options - support for multiple RSS contexts - Ethernet virtual: - Macsec: - replace custom netlink attribute checks with policy-level checks - Bonding: - support aggregator selection based on port priority - Microsoft vNIC: - use page pool fragments for RX buffers instead of full pages to improve memory efficiency - Ethernet NICs consumer, and embedded: - Qualcomm: support Ethernet function for IPQ9574 SoC - Airoha: implement wlan offloading via NPU - Freescale - enetc: add NETC timer PTP driver and add PTP support - fec: enable the Jumbo frame support for i.MX8QM - Renesas (R-Car S4): - support HW offloading for layer 2 switching - support for RZ/{T2H, N2H} SoCs - Cadence (macb): support TAPRIO traffic scheduling - TI: - support for Gigabit ICSS ethernet SoC (icssm-prueth) - Synopsys (stmmac): a lot of cleanups - Ethernet PHYs: - Support 10g-qxgmi phy-mode for AQR412C, Felix DSA and Lynx PCS driver - Support bcm63268 GPHY power control - Support for Micrel lan8842 PHY and PTP - Support for Aquantia AQR412 and AQR115 - CAN: - a large CAN-XL preparation work - reorganize raw_sock and uniqframe struct to minimize memory usage - rcar_canfd: update the CAN-FD handling - WiFi: - extended Neighbor Awareness Networking (NAN) support - S1G channel representation cleanup - improve S1G support - WiFi drivers: - Intel (iwlwifi): - major refactor and cleanup - Broadcom (brcm80211): - support for AP isolation - RealTek (rtw88/89) rtw88/89: - preparation work for RTL8922DE support - MediaTek (mt76): - HW restart improvements - MLO support - Qualcomm/Atheros (ath10k): - GTK rekey fixes - Bluetooth drivers: - btusb: support for several new IDs for MT7925 - btintel: support for BlazarIW core - btintel_pcie: support for _suspend() / _resume() - btintel_pcie: support for Scorpious, Panther Lake-H484 IDs" * tag 'net-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1536 commits) net: stmmac: Add support for Allwinner A523 GMAC200 dt-bindings: net: sun8i-emac: Add A523 GMAC200 compatible Revert "Documentation: net: add flow control guide and document ethtool API" octeontx2-pf: fix bitmap leak octeontx2-vf: fix bitmap leak net/mlx5e: Use extack in set rxfh callback net/mlx5e: Introduce mlx5e_rss_params for RSS configuration net/mlx5e: Introduce mlx5e_rss_init_params net/mlx5e: Remove unused mdev param from RSS indir init net/mlx5: Improve QoS error messages with actual depth values net/mlx5e: Prevent entering switchdev mode with inconsistent netns net/mlx5: HWS, Generalize complex matchers net/mlx5: Improve write-combining test reliability for ARM64 Grace CPUs selftests/net: add tcp_port_share to .gitignore Revert "net/mlx5e: Update and set Xon/Xoff upon MTU set" net: add NUMA awareness to skb_attempt_defer_free() net: use llist for sd->defer_list net: make softnet_data.defer_count an atomic selftests: drv-net: psp: add tests for destroying devices selftests: drv-net: psp: add test for auto-adjusting TCP MSS ...
20 hoursMerge tag 'media/v6.18-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - Added a new V4L2 clock helper - New camera sensor drivers - iris: Enable H.264/H.265 encoder support and fixes in iris driver common code - camss: add support for new SoC flavors - venus: add new SoC support - tc358743: support more infoframe types - Various fixes, driver improvements and cleanups * tag 'media/v6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (439 commits) media: venus: pm_helpers: add fallback for the opp-table media: qcom: camss: vfe: Fix BPL alignment for QCM2290 media: tuner: xc5000: Fix use-after-free in xc5000_release media: i2c: tc358743: Fix use-after-free bugs caused by orphan timer in probe media: b2c2: Fix use-after-free causing by irq_check_work in flexcop_pci_remove media: vsp1: Export missing vsp1_isp_free_buffer symbol media: renesas: vsp1: Convert to SYSTEM_SLEEP/RUNTIME_PM_OPS() media: renesas: ceu: Convert to RUNTIME_PM_OPS() media: renesas: fdp1: Convert to RUNTIME_PM_OPS() media: renesas: rcar-vin: Convert to DEFINE_SIMPLE_DEV_PM_OPS() media: renesas: rcar_drif: Convert to DEFINE_SIMPLE_DEV_PM_OPS() media: uvcvideo: Mark invalid entities with id UVC_INVALID_ENTITY_ID media: uvcvideo: Support UVC_CROSXU_CONTROL_IQ_PROFILE media: uvcvideo: Run uvc_ctrl_init_ctrl for all controls media: uvcvideo: Shorten the transfer size non compliance message media: uvcvideo: Do not re-reference dev->udev media: uvcvideo: Use intf instead of udev for printks media: uvcvideo: Move video_device under video_queue media: uvcvideo: Drop stream->mutex media: uvcvideo: Move MSXU_CONTROL_METADATA definition to header ...
2025-09-15powerpc/pseries: Define papr-hvpipe ioctlHaren Myneni
PowerPC FW introduced HVPIPE RTAS calls such as ibm,send-hvpipe-msg and ibm,receive-hvpipe-msg for the user space to exchange information with different sources such as Hardware Management Consoles (HMC). HVPIPE_IOC_CREATE_HANDLE is defined to use /dev/papr-hvpipe interface for ibm,send-hvpipe-msg and ibm,receive-hvpipe-msg RTAS calls. Also defined papr_hvpipe_hdr which will added in the payload that is passed between the kernel and the user space. Signed-off-by: Haren Myneni <haren@linux.ibm.com> Tested-by: Shashank MS <shashank.gowda@in.ibm.com> Reviewed-by: Mahesh Salgaonkar <mahesh@linux.ibm.com> Reviewed-by: Tyrel Datwyler <tyreld@linux.ibm.com> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20250909084402.1488456-2-haren@linux.ibm.com
2025-09-09Documentation: update Hans Verkuil's email addressHans Verkuil
Replace hverkuil@xs4all.nl by hverkuil@kernel.org. Signed-off-by: Hans Verkuil <hverkuil@kernel.org> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2025-09-09Documentation: media: update Hans Verkuil's email addressHans Verkuil
Replace hverkuil-cisco@xs4all.nl by hverkuil@kernel.org. Signed-off-by: Hans Verkuil <hverkuil@kernel.org> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2025-08-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-6.17-rc4). No conflicts. Adjacent changes: drivers/net/ethernet/intel/idpf/idpf_txrx.c 02614eee26fb ("idpf: do not linearize big TSO packets") 6c4e68480238 ("idpf: remove obsolete stashing code") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-29media: Documentation: Improve grammar in DVB APIHanne-Lotta Mäenpää
Fix typos and punctuation and improve grammar in documentation. Signed-off-by: Hanne-Lotta Mäenpää <hannelotta@gmail.com> Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
2025-08-25media: uapi: Documentation: Improve column width hints for examplesSakari Ailus
Use less arbitrary widths for the columns in metadata layout examples. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
2025-08-25media: Documentation: Move streams documentation one level upSakari Ailus
While streams can be found within pads, they do deserve their own documentation section on the same level than pads. Move them one level up. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
2025-08-25media: Documentation: Reword split of sensor driver to two classesSakari Ailus
The sensor drivers do not configure the output size of the sensors but the entire internal pipeline. Reflect this in the documentation. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
2025-08-25media: Documentation: Add a hyphen to list-basedSakari Ailus
Add a hyphen to list-based for uniform spelling in camera-sensor.rst. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
2025-08-18iommufd: Fix spelling errors in iommufd.rstAlessandro Ratti
This patch corrects two minor spelling issues found in Documentation/userspace-api/iommufd.rst: - "primarly" -> "primarily" - "sharable" -> "shareable" Found using codespell(1). Link: https://patch.msgid.link/r/20250815153840.188213-2-alessandro@0x65c.net Signed-off-by: Alessandro Ratti <alessandro@0x65c.net> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2025-08-12docs: uapi: netlink: update netlink specs linkMauro Carvalho Chehab
With the recent parser_yaml extension, and the removal of the auto-generated ReST source files, the location of netlink specs changed. Update uAPI accordingly. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
2025-08-12docs: netlink: netlink-raw.rst: use :ref: instead of :doc:Mauro Carvalho Chehab
Currently, rt documents are referred with: Documentation/userspace-api/netlink/netlink-raw.rst: :doc:`rt-link<../../networking/netlink_spec/rt-link>` Documentation/userspace-api/netlink/netlink-raw.rst: :doc:`tc<../../networking/netlink_spec/tc>` Documentation/userspace-api/netlink/netlink-raw.rst: :doc:`tc<../../networking/netlink_spec/tc>` Having :doc: references with relative paths doesn't always work, as it may have troubles when O= is used. Also that's hard to maintain, and may break if we change the way rst files are generated from yaml. Better to use instead a reference for the netlink family. So, replace them by Sphinx cross-reference tag that are created by ynl_gen_rst.py. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
2025-08-07Merge tag 'input-for-v6.17-rc0' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull input updates from Dmitry Torokhov: - updates to several drivers consuming GPIO APIs to use setters returning error codes - an infrastructure allowing to define "overlays" for touchscreens carving out regions implementing buttons and other elements from a bigger sensors and a corresponding update to st1232 driver - an update to AT/PS2 keyboard driver to map F13-F24 by default - Samsung keypad driver got a facelift - evdev input handler will now bind to all devices using EV_SYN event instead of abusing id->driver_info - two new sub-drivers implementing 1A (capacitive buttons) and 21 (forcepad button) functions in Synaptics RMI driver - support for polling mode in Goodix touchscreen driver - support for support for FocalTech FT8716 in edt-ft5x06 driver - support for MT6359 in mtk-pmic-keys driver - removal of pcf50633-input driver since platform it was used on is gone - new definitions for game controller "grip" buttons (BTN_GRIP*) and corresponding changes to xpad and hid-steam controller drivers - a new definition for "performance" key * tag 'input-for-v6.17-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (38 commits) HID: hid-steam: Use new BTN_GRIP* buttons Input: add keycode for performance mode key Input: max77693 - convert to atomic pwm operation Input: st1232 - add touch-overlay handling dt-bindings: input: touchscreen: st1232: add touch-overlay example Input: touch-overlay - add touchscreen overlay handling dt-bindings: touchscreen: add touch-overlay property Input: atkbd - correctly map F13 - F24 Input: xpad - use new BTN_GRIP* buttons Input: Add and document BTN_GRIP* Input: xpad - change buttons the D-Pad gets mapped as to BTN_DPAD_* Documentation: Fix capitalization of XBox -> Xbox Input: synaptics-rmi4 - add support for F1A dt-bindings: input: syna,rmi4: Document F1A function Input: synaptics-rmi4 - add support for Forcepads (F21) Input: mtk-pmic-keys - add support for MT6359 PMIC keys Input: remove special handling of id->driver_info when matching Input: evdev - switch matching to EV_SYN Input: samsung-keypad - use BIT() and GENMASK() where appropriate Input: samsung-keypad - use per-chip parameters ...
2025-08-03Merge tag 'ib-mfd-gpio-input-pwm-v6.17' of ↵Dmitry Torokhov
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into next Merge an immutable branch between MFD, GPIO, Input and PWM to resolve conflicts for the merge window pull request.
2025-07-31Merge tag 'media/v6.17-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - v4l2 core: - sub-device framework routing improvements - NV12M tiled variants added to v4l2_format_info - some fixes at control handler freeing logic - fixed H264 SEPARATE_COLOUR_PLANE check - new staging driver: Intel IPU7 PCI - Rockchip video decoder driver got promoted from staging - iris: added HEVC/VP9 encoder/decoder support - vsp1: driver has gained Renesas VSPX support - uvc: - switched to vb2 ioctl helpers - added MSXU 1.5 metadata support - atomisp: GC0310 sensor driver cleanups in preparation for moving it out of staging - Lots of cleanup, fixes and improvements * tag 'media/v6.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (310 commits) media: rkvdec: Unstage the driver media: rkvdec: Remove TODO file media: dt-bindings: rockchip: Add RK3576 Video Decoder bindings media: dt-bindings: rockchip: Document RK3588 Video Decoder bindings media: amphion: Support dmabuf and v4l2 buffer without binding media: verisilicon: postproc: 4K support media: v4l2: Add support for NV12M tiled variants to v4l2_format_info() media: uvcvideo: Use a count variable for meta_formats instead of 0 terminating media: uvcvideo: Auto-set UVC_QUIRK_MSXU_META media: uvcvideo: Introduce V4L2_META_FMT_UVC_MSXU_1_5 media: uvcvideo: Introduce dev->meta_formats media: Documentation: Add note about UVCH length field media: uvcvideo: Do not mark valid metadata as invalid media: uvcvideo: uvc_v4l2_unlocked_ioctl: Invert PM logic media: core: export v4l2_translate_cmd media: uvcvideo: Turn on the camera if V4L2_EVENT_SUB_FL_SEND_INITIAL media: uvcvideo: Remove stream->is_streaming field media: uvcvideo: Split uvc_stop_streaming() media: uvcvideo: Handle locks in uvc_queue_return_buffers media: uvcvideo: Use vb2 ioctl and fop helpers ...
2025-07-31Merge tag 'for-linus-iommufd' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd Pull iommufd updates from Jason Gunthorpe: "This broadly brings the assigned HW command queue support to iommufd. This feature is used to improve SVA performance in VMs by avoiding paravirtualization traps during SVA invalidations. Along the way I think some of the core logic is in a much better state to support future driver backed features. Summary: - IOMMU HW now has features to directly assign HW command queues to a guest VM. In this mode the command queue operates on a limited set of invalidation commands that are suitable for improving guest invalidation performance and easy for the HW to virtualize. This brings the generic infrastructure to allow IOMMU drivers to expose such command queues through the iommufd uAPI, mmap the doorbell pages, and get the guest physical range for the command queue ring itself. - An implementation for the NVIDIA SMMUv3 extension "cmdqv" is built on the new iommufd command queue features. It works with the existing SMMU driver support for cmdqv in guest VMs. - Many precursor cleanups and improvements to support the above cleanly, changes to the general ioctl and object helpers, driver support for VDEVICE, and mmap pgoff cookie infrastructure. - Sequence VDEVICE destruction to always happen before VFIO device destruction. When using the above type features, and also in future confidential compute, the internal virtual device representation becomes linked to HW or CC TSM configuration and objects. If a VFIO device is removed from iommufd those HW objects should also be cleaned up to prevent a sort of UAF. This became important now that we have HW backing the VDEVICE. - Fix one syzkaller found error related to math overflows during iova allocation" * tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd: (57 commits) iommu/arm-smmu-v3: Replace vsmmu_size/type with get_viommu_size iommu/arm-smmu-v3: Do not bother impl_ops if IOMMU_VIOMMU_TYPE_ARM_SMMUV3 iommufd: Rename some shortterm-related identifiers iommufd/selftest: Add coverage for vdevice tombstone iommufd/selftest: Explicitly skip tests for inapplicable variant iommufd/vdevice: Remove struct device reference from struct vdevice iommufd: Destroy vdevice on idevice destroy iommufd: Add a pre_destroy() op for objects iommufd: Add iommufd_object_tombstone_user() helper iommufd/viommu: Roll back to use iommufd_object_alloc() for vdevice iommufd/selftest: Test reserved regions near ULONG_MAX iommufd: Prevent ALIGN() overflow iommu/tegra241-cmdqv: import IOMMUFD module namespace iommufd: Do not allow _iommufd_object_alloc_ucmd if abort op is set iommu/tegra241-cmdqv: Add IOMMU_VEVENTQ_TYPE_TEGRA241_CMDQV support iommu/tegra241-cmdqv: Add user-space use support iommu/tegra241-cmdqv: Do not statically map LVCMDQs iommu/tegra241-cmdqv: Simplify deinit flow in tegra241_cmdqv_remove_vintf() iommu/tegra241-cmdqv: Use request_threaded_irq iommu/arm-smmu-v3-iommufd: Add hw_info to impl_ops ...
2025-07-31Merge tag 'docs-6.17' of git://git.lwn.net/linuxLinus Torvalds
Pull documentation updates from Jonathan Corbet: "It has been a relatively busy cycle for docs, especially the build system: - The Perl kernel-doc script was added to 2.3.52pre1 just after the turn of the millennium. Over the following 25 years, it accumulated a vast amount of cruft, all in a language few people want to deal with anymore. Mauro's Python replacement in 6.16 faithfully reproduced all of the cruft in the hope of avoiding regressions. Now that we have a more reasonable code base, though, we can work on cleaning it up; many of the changes this time around are toward that end. - A reorganization of the ext4 docs into the usual TOC format. - Various Chinese translations and updates. - A new script from Mauro to help with docs-build testing. - A new document for linked lists - A sweep through MAINTAINERS fixing broken GitHub git:// repository links. ...and lots of fixes and updates" * tag 'docs-6.17' of git://git.lwn.net/linux: (147 commits) scripts: add origin commit identification based on specific patterns sphinx: kernel_abi: fix performance regression with O=<dir> Documentation: core-api: entry: Replace deprecated KVM entry/exit functions docs: fault-injection: drop reference to md-faulty docs: document linked lists scripts: kdoc: make it backward-compatible with Python 3.7 docs: kernel-doc: emit warnings for ancient versions of Python Documentation/rtla: Describe exit status Documentation/rtla: Add include common_appendix.rst docs: kernel: Clarify printk_ratelimit_burst reset behavior Documentation: ioctl-number: Don't repeat macro names Documentation: ioctl-number: Shorten macros table Documentation: ioctl-number: Correct full path to papr-physical-attestation.h Documentation: ioctl-number: Extend "Include File" column width Documentation: ioctl-number: Fix linuxppc-dev mailto link overlayfs.rst: fix typos docs: kdoc: emit a warning for ancient versions of Python docs: kdoc: clean up check_sections() docs: kdoc: directly access the always-there KdocItem fields docs: kdoc: straighten up dump_declaration() ...
2025-07-30Merge tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernelLinus Torvalds
Pull drm updates from Dave Airlie: "Highlights: - Intel xe enable Panthor Lake, started adding WildCat Lake - amdgpu has a bunch of reset improvments along with the usual IP updates - msm got VM_BIND support which is important for vulkan sparse memory - more drm_panic users - gpusvm common code to handle a bunch of core SVM work outside drivers. Detail summary: Changes outside drm subdirectory: - 'shrink_shmem_memory()' for better shmem/hibernate interaction - Rust support infrastructure: - make ETIMEDOUT available - add size constants up to SZ_2G - add DMA coherent allocation bindings - mtd driver for Intel GPU non-volatile storage - i2c designware quirk for Intel xe core: - atomic helpers: tune enable/disable sequences - add task info to wedge API - refactor EDID quirks - connector: move HDR sink to drm_display_info - fourcc: half-float and 32-bit float formats - mode_config: pass format info to simplify dma-buf: - heaps: Give CMA heap a stable name ci: - add device tree validation and kunit displayport: - change AUX DPCD access probe address - add quirk for DPCD probe - add panel replay definitions - backlight control helpers fbdev: - make CONFIG_FIRMWARE_EDID available on all arches fence: - fix UAF issues format-helper: - improve tests gpusvm: - introduce devmem only flag for allocation - add timeslicing support to GPU SVM ttm: - improve eviction sched: - tracing improvements - kunit improvements - memory leak fixes - reset handling improvements color mgmt: - add hardware gamma LUT handling helpers bridge: - add destroy hook - switch to reference counted drm_bridge allocations - tc358767: convert to devm_drm_bridge_alloc - improve CEC handling panel: - switch to reference counter drm_panel allocations - fwnode panel lookup - Huiling hl055fhv028c support - Raspberry Pi 7" 720x1280 support - edp: KDC KD116N3730A05, N160JCE-ELL CMN, N116BCJ-EAK - simple: AUO P238HAN01 - st7701: Winstar wf40eswaa6mnn0 - visionox: rm69299-shift - Renesas R61307, Renesas R69328 support - DJN HX83112B hdmi: - add CEC handling - YUV420 output support xe: - WildCat Lake support - Enable PanthorLake by default - mark BMG as SRIOV capable - update firmware recommendations - Expose media OA units - aux-bux support for non-volatile memory - MTD intel-dg driver for non-volatile memory - Expose fan control and voltage regulator in sysfs - restructure migration for multi-device - Restore GuC submit UAF fix - make GEM shrinker drm managed - SRIOV VF Post-migration recovery of GGTT nodes - W/A additions/reworks - Prefetch support for svm ranges - Don't allocate managed BO for each policy change - HWMON fixes for BMG - Create LRC BO without VM - PCI ID updates - make SLPC debugfs files optional - rework eviction rejection of bound external BOs - consolidate PAT programming logic for pre/post Xe2 - init changes for flicker-free boot - Enable GuC Dynamic Inhibit Context switch i915: - drm_panic support for i915/xe - initial flip queue off by default for LNL/PNL - Wildcat Lake Display support - Support for DSC fractional link bpp - Support for simultaneous Panel Replay and Adaptive sync - Support for PTL+ double buffer LUT - initial PIPEDMC event handling - drm_panel_follower support - DPLL interface renames - allocate struct intel_display dynamically - flip queue preperation - abstract DRAM detection better - avoid GuC scheduling stalls - remove DG1 force probe requirement - fix MEI interrupt handler on RT kernels - use backlight control helpers for eDP - more shared display code refactoring amdgpu: - add userq slot to INFO ioctl - SR-IOV hibernation support - Suspend improvements - Backlight improvements - Use scaling for non-native eDP modes - cleaner shader updates for GC 9.x - Remove fence slab - SDMA fw checks for userq support - RAS updates - DMCUB updates - DP tunneling fixes - Display idle D3 support - Per queue reset improvements - initial smartmux support amdkfd: - enable KFD on loongarch - mtype fix for ext coherent system memory radeon: - CS validation additional GL extensions - drop console lock during suspend/resume - bump driver version msm: - VM BIND support - CI: infrastructure updates - UBWC single source of truth - decouple GPU and KMS support - DP: rework I/O accessors - DPU: SM8750 support - DSI: SM8750 support - GPU: X1-45 support and speedbin support for X1-85 - MDSS: SM8750 support nova: - register! macro improvements - DMA object abstraction - VBIOS parser + fwsec lookup - sysmem flush page support - falcon: generic falcon boot code and HAL - FWSEC-FRTS: fb setup and load/execute ivpu: - Add Wildcat Lake support - Add turbo flag ast: - improve hardware generations implementation imx: - IMX8qxq Display Controller support lima: - Rockchip RK3528 GPU support nouveau: - fence handling cleanup panfrost: - MT8370 support - bo labeling - 64-bit register access qaic: - add RAS support rockchip: - convert inno_hdmi to a bridge rz-du: - add RZ/V2H(P) support - MIPI-DSI DCS support sitronix: - ST7567 support sun4i: - add H616 support tidss: - add TI AM62L support - AM65x OLDI bridge support bochs: - drm panic support vkms: - YUV and R* format support - use faux device vmwgfx: - fence improvements hyperv: - move out of simple - add drm_panic support" * tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernel: (1479 commits) drm/tidss: oldi: convert to devm_drm_bridge_alloc() API drm/tidss: encoder: convert to devm_drm_bridge_alloc() drm/amdgpu: move reset support type checks into the caller drm/amdgpu/sdma7: re-emit unprocessed state on ring reset drm/amdgpu/sdma6: re-emit unprocessed state on ring reset drm/amdgpu/sdma5.2: re-emit unprocessed state on ring reset drm/amdgpu/sdma5: re-emit unprocessed state on ring reset drm/amdgpu/gfx12: re-emit unprocessed state on ring reset drm/amdgpu/gfx11: re-emit unprocessed state on ring reset drm/amdgpu/gfx10: re-emit unprocessed state on ring reset drm/amdgpu/gfx9.4.3: re-emit unprocessed state on kcq reset drm/amdgpu/gfx9: re-emit unprocessed state on kcq reset drm/amdgpu: Add WARN_ON to the resource clear function drm/amd/pm: Use cached metrics data on SMUv13.0.6 drm/amd/pm: Use cached data for min/max clocks gpu: nova-core: fix bounds check in PmuLookupTableEntry::new drm/amdgpu: Replace HQD terminology with slots naming drm/amdgpu: Add user queue instance count in HW IP info drm/amd/amdgpu: Add helper functions for isp buffers drm/amd/amdgpu: Initialize swnode for ISP MFD device ...
2025-07-27Documentation: Fix capitalization of XBox -> XboxVicki Pfau
This also improves the phrasing of "an example" listing two examples. Signed-off-by: Vicki Pfau <vi@endrift.com> Link: https://lore.kernel.org/r/20250702034500.124741-1-vi@endrift.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2025-07-15Documentation: ioctl-number: Don't repeat macro namesBagas Sanjaya
Don't repeat mentioning macro names (_IO, _IOW, _IOR, and _IOWR) to keep the wording effective. Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250715024258.16882-3-bagasdotme@gmail.com
2025-07-15Documentation: ioctl-number: Shorten macros tableBagas Sanjaya
The macros table has three columns: the second one is "an" and the third one writes "an ioctl with ... parameters". Simplify the table by adding heading row that indicates macro name and accepted parameters. Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250715024258.16882-2-bagasdotme@gmail.com
2025-07-15Documentation: ioctl-number: Correct full path to papr-physical-attestation.hBagas Sanjaya
Commit 03c9d1a5a30d93 ("Documentation: Fix description format for powerpc RTAS ioctls") fixes Sphinx warning by chopping arch/ path component of papr-physical-attestation.h to fit existing "Include File" column. Now that the column has been widened just enough for that header file, add back its arch/ path component. Reviewed-by: Haren Myneni <haren@linux.ibm.com> Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Acked-by: Madhavan Srinivasan <maddy@linux.ibm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250714015711.14525-4-bagasdotme@gmail.com
2025-07-15Documentation: ioctl-number: Extend "Include File" column widthBagas Sanjaya
Extend width of "Include File" column to fit full path to papr-physical-attestation.h in later commit. Reviewed-by: Haren Myneni <haren@linux.ibm.com> Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Acked-by: Madhavan Srinivasan <maddy@linux.ibm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250714015711.14525-3-bagasdotme@gmail.com
2025-07-15Documentation: ioctl-number: Fix linuxppc-dev mailto linkBagas Sanjaya
Spell out full Linux PPC mailing list address like other subsystem mailing lists listed in the table. Reviewed-by: Haren Myneni <haren@linux.ibm.com> Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Acked-by: Madhavan Srinivasan <maddy@linux.ibm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250714015711.14525-2-bagasdotme@gmail.com
2025-07-11Documentation: userspace-api: iommufd: Update HW QUEUENicolin Chen
With the introduction of the new object and its infrastructure, update the doc to reflect that. Link: https://patch.msgid.link/r/caa3ddc0d9bacf05c5b3e02c5f306ff3172cc54d.1752126748.git.nicolinc@nvidia.com Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Nicolin Chen <nicolinc@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2025-07-11media: uvcvideo: Introduce V4L2_META_FMT_UVC_MSXU_1_5Ricardo Ribalda
The UVC driver provides two metadata types V4L2_META_FMT_UVC, and V4L2_META_FMT_D4XX. The only difference between the two of them is that V4L2_META_FMT_UVC only copies PTS, SCR, size and flags, and V4L2_META_FMT_D4XX copies the whole metadata section. Now we only enable V4L2_META_FMT_D4XX for the Intel D4xx family of devices, but it is useful to have the whole metadata payload for any device where vendors include other metadata, such as the one described by Microsoft: https://learn.microsoft.com/en-us/windows-hardware/drivers/stream/mf-capture-metadata This patch introduces a new format V4L2_META_FMT_UVC_MSXU_1_5, that is identical to V4L2_META_FMT_D4XX. Let the user enable this format with a quirk for now. This way they can test if their devices provide useful metadata without rebuilding the kernel. They can later contribute patches to auto-quirk their devices. We will also work in methods to auto-detect devices compatible with this new metadata format. Suggested-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Hans de Goede <hansg@kernel.org> Signed-off-by: Ricardo Ribalda <ribalda@chromium.org> Link: https://lore.kernel.org/r/20250707-uvc-meta-v8-4-ed17f8b1218b@chromium.org Signed-off-by: Hans de Goede <hansg@kernel.org> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
2025-07-11media: Documentation: Add note about UVCH length fieldRicardo Ribalda
The documentation currently describes the UVC length field as the "length of the rest of the block", which can be misleading. The driver limits the data copied to a maximum of 12 bytes. This change adds a clarifying sentence to the documentation to make this restriction explicit. Reviewed-by: Hans de Goede <hansg@kernel.org> Signed-off-by: Ricardo Ribalda <ribalda@chromium.org> Link: https://lore.kernel.org/r/20250707-uvc-meta-v8-2-ed17f8b1218b@chromium.org Signed-off-by: Hans de Goede <hansg@kernel.org> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
2025-07-09dma-buf: heaps: Give default CMA heap a fixed nameJared Kangas
The CMA heap's name in devtmpfs can vary depending on how the heap is defined. Its name defaults to "reserved", but if a CMA area is defined in the devicetree, the heap takes on the devicetree node's name, such as "default-pool" or "linux,cma". To simplify naming, unconditionally name it "default_cma_region", but keep a legacy node in place backed by the same underlying allocator for backwards compatibility. Reviewed-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Jared Kangas <jkangas@redhat.com> Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org> Link: https://lore.kernel.org/r/20250610131231.1724627-4-jkangas@redhat.com
2025-07-09Documentation: dma-buf: heaps: Fix code markupJared Kangas
Code snippets should be wrapped in double backticks to follow reStructuredText semantics; the use of single backticks uses the :title-reference: role by default, which isn't quite what we want. Add double backticks to code snippets to fix this. Reviewed-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Jared Kangas <jkangas@redhat.com> Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org> Link: https://lore.kernel.org/r/20250610131231.1724627-2-jkangas@redhat.com
2025-07-08Documentation: media: cec: update error inj docHans Verkuil
Document rx-no-low-drive and the new support to inject glitches. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2025-07-07block: remove pktcdvd driverJens Axboe
This driver has long outlived it's utility, and it's broken and unloved. The main use case for this was direct mount with UDF of cd-rw drives that required 32kb packets. It would collect writes into that size and write them out in multiples of that. That's not a common use case anymore, the world has moved on from those kinds of media. To make matters worse, it's actively breaking setups where it's not even required or useful. Link: https://lore.kernel.org/linux-block/fxg6dksau4jsk3u5xldlyo2m7qgiux6vtdrz5rywseotsouqdv@urcrwz6qtd3r/ Link: https://lore.kernel.org/linux-block/dcc4836e-6da9-4208-ad27-bbd44b3a2063@kernel.dk/ Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-07-03media: v4l2: Add Renesas Camera Receiver Unit pixel formatsDaniel Scally
The Renesas Camera Receiver Unit in the RZ/V2H SoC can output RAW data captured from an image sensor without conversion to an RGB/YUV format. In that case the data are packed into 64-bit blocks, with a variable amount of padding in the most significant bits depending on the bitdepth of the data. Add new V4L2 pixel format codes for the new formats, along with documentation to describe them. Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Daniel Scally <dan.scally+renesas@ideasonboard.com> Link: https://lore.kernel.org/r/20250630222734.2712390-1-dan.scally@ideasonboard.com Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
2025-06-30media: Documentation: Improve grammar, formatting in Video4LinuxHanne-Lotta Mäenpää
Fix typos, punctuation and improve grammar and formatting in documentation for Video4Linux (V4L). Signed-off-by: Hanne-Lotta Mäenpää <hannelotta@gmail.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
2025-06-09docs: Fix typos, improve grammar in Userspace APIHanne-Lotta Mäenpää
Fix a typo and improve wording and punctuation in the documentation for Userspace API. Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca> Signed-off-by: Hanne-Lotta Mäenpää <hannelotta@gmail.com> Link: https://lore.kernel.org/r/20250522115255.137450-4-hannelotta@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-06-09docs: Improve grammar in Userspace API/fwctlHanne-Lotta Mäenpää
Fix typos and improve grammar in the documentation for fwctl subsystem. Use the word user space consistently, instead of having two variants (user space vs. userspace). Change wording of denied behaviour to be disallowed behaviour when describing the interface. Reviewed-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Hanne-Lotta Mäenpää <hannelotta@gmail.com> Link: https://lore.kernel.org/r/20250522115255.137450-3-hannelotta@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-06-07Merge tag 'loongarch-6.16' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson Pull LoongArch updates from Huacai Chen: - Adjust the 'make install' operation - Support SCHED_MC (Multi-core scheduler) - Enable ARCH_SUPPORTS_MSEAL_SYSTEM_MAPPINGS - Enable HAVE_ARCH_STACKLEAK - Increase max supported CPUs up to 2048 - Introduce the numa_memblks conversion - Add PWM controller nodes in dts - Some bug fixes and other small changes * tag 'loongarch-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: platform/loongarch: laptop: Unregister generic_sub_drivers on exit platform/loongarch: laptop: Add backlight power control support platform/loongarch: laptop: Get brightness setting from EC on probe LoongArch: dts: Add PWM support to Loongson-2K2000 LoongArch: dts: Add PWM support to Loongson-2K1000 LoongArch: dts: Add PWM support to Loongson-2K0500 LoongArch: vDSO: Correctly use asm parameters in syscall wrappers LoongArch: Fix panic caused by NULL-PMD in huge_pte_offset() LoongArch: Preserve firmware configuration when desired LoongArch: Avoid using $r0/$r1 as "mask" for csrxchg LoongArch: Introduce the numa_memblks conversion LoongArch: Increase max supported CPUs up to 2048 LoongArch: Enable HAVE_ARCH_STACKLEAK LoongArch: Enable ARCH_SUPPORTS_MSEAL_SYSTEM_MAPPINGS LoongArch: Add SCHED_MC (Multi-core scheduler) support LoongArch: Add some annotations in archhelp LoongArch: Using generic scripts/install.sh in `make install` LoongArch: Add a default install.sh
2025-06-06Merge tag 'char-misc-6.16-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char / misc / iio driver updates from Greg KH: "Here is the big char/misc/iio and other small driver subsystem pull request for 6.16-rc1. Overall, a lot of individual changes, but nothing major, just the normal constant forward progress of new device support and cleanups to existing subsystems. Highlights in here are: - Large IIO driver updates and additions and device tree changes - Android binder bugfixes and logfile fixes - mhi driver updates - comedi driver updates - counter driver updates and additions - coresight driver updates and additions - echo driver removal as there are no in-kernel users of it - nvmem driver updates - spmi driver updates - new amd-sbi driver "subsystem" and drivers added - rust miscdriver binding documentation fix - other small driver fixes and updates (uio, w1, acrn, hpet, xillybus, cardreader drivers, fastrpc and others) All of these have been in linux-next for quite a while with no reported problems" * tag 'char-misc-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (390 commits) binder: fix yet another UAF in binder_devices counter: microchip-tcb-capture: Add watch validation support dt-bindings: iio: adc: Add ROHM BD79100G iio: adc: add support for Nuvoton NCT7201 dt-bindings: iio: adc: add NCT7201 ADCs iio: chemical: Add driver for SEN0322 dt-bindings: trivial-devices: Document SEN0322 iio: adc: ad7768-1: reorganize driver headers iio: bmp280: zero-init buffer iio: ssp_sensors: optimalize -> optimize HID: sensor-hub: Fix typo and improve documentation iio: admv1013: replace redundant ternary operator with just len iio: chemical: mhz19b: Fix error code in probe() iio: adc: at91-sama5d2: use IIO_DECLARE_BUFFER_WITH_TS iio: accel: sca3300: use IIO_DECLARE_BUFFER_WITH_TS iio: adc: ad7380: use IIO_DECLARE_DMA_BUFFER_WITH_TS iio: adc: ad4695: rename AD4695_MAX_VIN_CHANNELS iio: adc: ad4695: use IIO_DECLARE_DMA_BUFFER_WITH_TS iio: introduce IIO_DECLARE_BUFFER_WITH_TS macros iio: make IIO_DMA_MINALIGN minimum of 8 bytes ...
2025-05-30LoongArch: Enable ARCH_SUPPORTS_MSEAL_SYSTEM_MAPPINGSYuli Wang
Provide support for CONFIG_MSEAL_SYSTEM_MAPPINGS on LoongArch, covering the vdso. Link: https://lore.kernel.org/all/25bad37f-273e-4626-999c-e1890be96182@lucifer.local/ Acked-by: Liam R. Howlett <Liam.Howlett@oracle.com> Acked-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Jeff Xu <jeffxu@chromium.org> Tested-by: Yuli Wang <wangyuli@uniontech.com> Signed-off-by: Yuli Wang <wangyuli@uniontech.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2025-05-28Merge tag 'net-next-6.16' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Paolo Abeni: "Core: - Implement the Device Memory TCP transmit path, allowing zero-copy data transmission on top of TCP from e.g. GPU memory to the wire. - Move all the IPv6 routing tables management outside the RTNL scope, under its own lock and RCU. The route control path is now 3x times faster. - Convert queue related netlink ops to instance lock, reducing again the scope of the RTNL lock. This improves the control plane scalability. - Refactor the software crc32c implementation, removing unneeded abstraction layers and improving significantly the related micro-benchmarks. - Optimize the GRO engine for UDP-tunneled traffic, for a 10% performance improvement in related stream tests. - Cover more per-CPU storage with local nested BH locking; this is a prep work to remove the current per-CPU lock in local_bh_disable() on PREMPT_RT. - Introduce and use nlmsg_payload helper, combining buffer bounds verification with accessing payload carried by netlink messages. Netfilter: - Rewrite the procfs conntrack table implementation, improving considerably the dump performance. A lot of user-space tools still use this interface. - Implement support for wildcard netdevice in netdev basechain and flowtables. - Integrate conntrack information into nft trace infrastructure. - Export set count and backend name to userspace, for better introspection. BPF: - BPF qdisc support: BPF-qdisc can be implemented with BPF struct_ops programs and can be controlled in similar way to traditional qdiscs using the "tc qdisc" command. - Refactor the UDP socket iterator, addressing long standing issues WRT duplicate hits or missed sockets. Protocols: - Improve TCP receive buffer auto-tuning and increase the default upper bound for the receive buffer; overall this improves the single flow maximum thoughput on 200Gbs link by over 60%. - Add AFS GSSAPI security class to AF_RXRPC; it provides transport security for connections to the AFS fileserver and VL server. - Improve TCP multipath routing, so that the sources address always matches the nexthop device. - Introduce SO_PASSRIGHTS for AF_UNIX, to allow disabling SCM_RIGHTS, and thus preventing DoS caused by passing around problematic FDs. - Retire DCCP socket. DCCP only receives updates for bugs, and major distros disable it by default. Its removal allows for better organisation of TCP fields to reduce the number of cache lines hit in the fast path. - Extend TCP drop-reason support to cover PAWS checks. Driver API: - Reorganize PTP ioctl flag support to require an explicit opt-in for the drivers, avoiding the problem of drivers not rejecting new unsupported flags. - Converted several device drivers to timestamping APIs. - Introduce per-PHY ethtool dump helpers, improving the support for dump operations targeting PHYs. Tests and tooling: - Add support for classic netlink in user space C codegen, so that ynl-c can now read, create and modify links, routes addresses and qdisc layer configuration. - Add ynl sub-types for binary attributes, allowing ynl-c to output known struct instead of raw binary data, clarifying the classic netlink output. - Extend MPTCP selftests to improve the code-coverage. - Add tests for XDP tail adjustment in AF_XDP. New hardware / drivers: - OpenVPN virtual driver: offload OpenVPN data channels processing to the kernel-space, increasing the data transfer throughput WRT the user-space implementation. - Renesas glue driver for the gigabit ethernet RZ/V2H(P) SoC. - Broadcom asp-v3.0 ethernet driver. - AMD Renoir ethernet device. - ReakTek MT9888 2.5G ethernet PHY driver. - Aeonsemi 10G C45 PHYs driver. Drivers: - Ethernet high-speed NICs: - nVidia/Mellanox (mlx5): - refactor the steering table handling to significantly reduce the amount of memory used - add support for complex matches in H/W flow steering - improve flow streeing error handling - convert to netdev instance locking - Intel (100G, ice, igb, ixgbe, idpf): - ice: add switchdev support for LLDP traffic over VF - ixgbe: add firmware manipulation and regions devlink support - igb: introduce support for frame transmission premption - igb: adds persistent NAPI configuration - idpf: introduce RDMA support - idpf: add initial PTP support - Meta (fbnic): - extend hardware stats coverage - add devlink dev flash support - Broadcom (bnxt): - add support for RX-side device memory TCP - Wangxun (txgbe): - implement support for udp tunnel offload - complete PTP and SRIOV support for AML 25G/10G devices - Ethernet NICs embedded and virtual: - Google (gve): - add device memory TCP TX support - Amazon (ena): - support persistent per-NAPI config - Airoha: - add H/W support for L2 traffic offload - add per flow stats for flow offloading - RealTek (rtl8211): add support for WoL magic packet - Synopsys (stmmac): - dwmac-socfpga 1000BaseX support - add Loongson-2K3000 support - introduce support for hardware-accelerated VLAN stripping - Broadcom (bcmgenet): - expose more H/W stats - Freescale (enetc, dpaa2-eth): - enetc: add MAC filter, VLAN filter RSS and loopback support - dpaa2-eth: convert to H/W timestamping APIs - vxlan: convert FDB table to rhashtable, for better scalabilty - veth: apply qdisc backpressure on full ring to reduce TX drops - Ethernet switches: - Microchip (kzZ88x3): add ETS scheduler support - Ethernet PHYs: - RealTek (rtl8211): - add support for WoL magic packet - add support for PHY LEDs - CAN: - Adds RZ/G3E CANFD support to the rcar_canfd driver. - Preparatory work for CAN-XL support. - Add self-tests framework with support for CAN physical interfaces. - WiFi: - mac80211: - scan improvements with multi-link operation (MLO) - Qualcomm (ath12k): - enable AHB support for IPQ5332 - add monitor interface support to QCN9274 - add multi-link operation support to WCN7850 - add 802.11d scan offload support to WCN7850 - monitor mode for WCN7850, better 6 GHz regulatory - Qualcomm (ath11k): - restore hibernation support - MediaTek (mt76): - WiFi-7 improvements - implement support for mt7990 - Intel (iwlwifi): - enhanced multi-link single-radio (EMLSR) support on 5 GHz links - rework device configuration - RealTek (rtw88): - improve throughput for RTL8814AU - RealTek (rtw89): - add multi-link operation support - STA/P2P concurrency improvements - support different SAR configs by antenna - Bluetooth: - introduce HCI Driver protocol - btintel_pcie: do not generate coredump for diagnostic events - btusb: add HCI Drv commands for configuring altsetting - btusb: add RTL8851BE device 0x0bda:0xb850 - btusb: add new VID/PID 13d3/3584 for MT7922 - btusb: add new VID/PID 13d3/3630 and 13d3/3613 for MT7925 - btnxpuart: implement host-wakeup feature" * tag 'net-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1611 commits) selftests/bpf: Fix bpf selftest build warning selftests: netfilter: Fix skip of wildcard interface test net: phy: mscc: Stop clearing the the UDPv4 checksum for L2 frames net: openvswitch: Fix the dead loop of MPLS parse calipso: Don't call calipso functions for AF_INET sk. selftests/tc-testing: Add a test for HFSC eltree double add with reentrant enqueue behaviour on netem net_sched: hfsc: Address reentrant enqueue adding class to eltree twice octeontx2-pf: QOS: Refactor TC_HTB_LEAF_DEL_LAST callback octeontx2-pf: QOS: Perform cache sync on send queue teardown net: mana: Add support for Multi Vports on Bare metal net: devmem: ncdevmem: remove unused variable net: devmem: ksft: upgrade rx test to send 1K data net: devmem: ksft: add 5 tuple FS support net: devmem: ksft: add exit_wait to make rx test pass net: devmem: ksft: add ipv4 support net: devmem: preserve sockc_err page_pool: fix ugly page_pool formatting net: devmem: move list_add to net_devmem_bind_dmabuf. selftests: netfilter: nft_queue.sh: include file transfer duration in log message net: phy: mscc: Fix memory leak when using one step timestamping ...
2025-05-28Merge tag 'media/v6.16-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - v4l2-core fix: V4L2_BUF_TYPE_VIDEO_OVERLAY is capture, not output - New driver: Amlogic C3 ISP - New sensor drivers: ST VD55G1 and VD56G3, OmniVision OV02C10 - amlogic: c3-mipi-csi2: Handle 64-bits division - a fix for 64-bits division at the amlogic c3-mipi-csi2 driver - Changes at atomisp to support mainline mt9m114 driver and remove deprecated GPIO APIs - various cleanups, fixes and enhancements * tag 'media/v6.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (314 commits) media: rkvdec: h264: Support High 10 and 4:2:2 profiles media: rkvdec: Add get_image_fmt ops media: rkvdec: Initialize the m2m context before the controls media: rkvdec: h264: Limit minimum profile to constrained baseline media: mediatek: jpeg: support 34bits media: verisilicon: Free post processor buffers on error media: platform: mtk-mdp3: Remove unused mdp_get_plat_device media: amlogic: c3-mipi-csi2: Handle 64-bits division media: uvcvideo: Use dev_err_probe for devm_gpiod_get_optional media: uvcvideo: Fix deferred probing error media: uvcvideo: Rollback non processed entities on error media: uvcvideo: Send control events for partial succeeds media: uvcvideo: Return the number of processed controls media: uvcvideo: Do not turn on the camera for some ioctls media: uvcvideo: Make power management granular media: uvcvideo: Increase/decrease the PM counter per IOCTL media: uvcvideo: Create uvc_pm_(get|put) functions media: uvcvideo: Keep streaming state in the file handle Documentation: media: Add documentation file c3-isp.rst Documentation: media: Add documentation file metafmt-c3-isp.rst ...
2025-05-27Merge tag 'docs-6.16' of git://git.lwn.net/linuxLinus Torvalds
Pull documentation updates from Jonathan Corbet: "A moderately busy cycle for documentation this time around: - The most significant change is the replacement of the old kernel-doc script (a monstrous collection of Perl regexes that predates the Git era) with a Python reimplementation. That, too, is a horrifying collection of regexes, but in a much cleaner and more maintainable structure that integrates far better with the Sphinx build system. This change has been in linux-next for the full 6.15 cycle; the small number of problems that turned up have been addressed, seemingly to everybody's satisfaction. The Perl kernel-doc script remains in tree (as scripts/kernel-doc.pl) and can be used with a command-line option if need be. Unless some reason to keep it around materializes, it will probably go away in 6.17. Credit goes to Mauro Carvalho Chehab for doing all this work. - Some RTLA documentation updates - A handful of Chinese translations - The usual collection of typo fixes, general updates, etc" * tag 'docs-6.16' of git://git.lwn.net/linux: (85 commits) Docs: doc-guide: update sphinx.rst Sphinx version number docs: doc-guide: clarify latest theme usage Documentation/scheduler: Fix typo in sched-stats domain field description scripts: kernel-doc: prevent a KeyError when checking output docs: kerneldoc.py: simplify exception handling logic MAINTAINERS: update linux-doc entry to cover new Python scripts docs: align with scripts/syscall.tbl migration Documentation: NTB: Fix typo Documentation: ioctl-number: Update table intro docs: conf.py: drop backward support for old Sphinx versions Docs: driver-api/basics: add kobject_event interfaces Docs: relay: editing cleanups docs: fix "incase" typo in coresight/panic.rst Fix spelling error for 'parallel' docs: admin-guide: fix typos in reporting-issues.rst docs: dmaengine: add explanation for DMA_ASYNC_TX capability Documentation: leds: improve readibility of multicolor doc docs: fix typo in firmware-related section docs: Makefile: Inherit PYTHONPYCACHEPREFIX setting as env variable Documentation: ioctl-number: Update outdated submission info ...
2025-05-26Merge tag 'powerpc-6.16-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Madhavan Srinivasan: - Support for dynamic preemption - Migrate powerpc boards GPIO driver to new setter API - Added new PMU for KVM host-wide measurement - Enhancement to htmdump driver to support more functions - Added character device for couple RTAS supported APIs - Minor fixes and cleanup Thanks to Amit Machhiwal, Athira Rajeev, Bagas Sanjaya, Bartosz Golaszewski, Christophe Leroy, Eddie James, Gaurav Batra, Gautam Menghani, Geert Uytterhoeven, Haren Myneni, Hari Bathini, Jiri Slaby (SUSE), Linus Walleij, Michal Suchanek, Naveen N Rao (AMD), Nilay Shroff, Ricardo B. Marlière, Ritesh Harjani (IBM), Sathvika Vasireddy, Shrikanth Hegde, Stephen Rothwell, Sourabh Jain, Thorsten Blum, Vaibhav Jain, Venkat Rao Bagalkote, and Viktor Malik. * tag 'powerpc-6.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (52 commits) MAINTAINERS: powerpc: Remove myself as a reviewer powerpc/iommu: Use str_disabled_enabled() helper powerpc/powermac: Use str_enabled_disabled() and str_on_off() helpers powerpc/mm/fault: Use str_write_read() helper function powerpc: Replace strcpy() with strscpy() in proc_ppc64_init() powerpc/pseries/iommu: Fix kmemleak in TCE table userspace view powerpc/kernel: Fix ppc_save_regs inclusion in build powerpc: Transliterate author name and remove FIXME powerpc/pseries/htmdump: Include header file to get is_kvm_guest() definition KVM: PPC: Book3S HV: Fix IRQ map warnings with XICS on pSeries KVM Guest powerpc/8xx: Reduce alignment constraint for kernel memory powerpc/boot: Fix build with gcc 15 powerpc/pseries/htmdump: Add documentation for H_HTM debugfs interface powerpc/pseries/htmdump: Add htm capabilities support to htmdump module powerpc/pseries/htmdump: Add htm flags support to htmdump module powerpc/pseries/htmdump: Add htm setup support to htmdump module powerpc/pseries/htmdump: Add htm info support to htmdump module powerpc/pseries/htmdump: Add htm status support to htmdump module powerpc/pseries/htmdump: Add htm start support to htmdump module powerpc/pseries/htmdump: Add htm configure support to htmdump module ...
2025-05-21misc: amd-sbi: Add support for AMD_SBI IOCTLAkshay Gupta
The present sbrmi module only support reporting power via hwmon. However, AMD data center range of processors support various system management functionality using custom protocols defined in Advanced Platform Management Link (APML) specification. Register a miscdevice, which creates a device /dev/sbrmiX with an IOCTL interface for the user space to invoke the APML Mailbox protocol, which is already defined in sbrmi_mailbox_xfer(). The APML protocols depend on a set of RMI registers. Having an IOCTL as a single entry point will help in providing synchronization among these protocols as multiple transactions on RMI register set may create race condition. Support for other protocols will be added in subsequent patches. APML mailbox protocol returns additional error codes written by SMU firmware in the out-bound register 0x37. These errors include, invalid core, message not supported over platform and others. This additional error codes can be used to provide more details to user space. Open-sourced and widely used https://github.com/amd/esmi_oob_library will continue to provide user-space programmable API. Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com> Signed-off-by: Akshay Gupta <akshay.gupta@amd.com> Link: https://lore.kernel.org/r/20250428063034.2145566-7-akshay.gupta@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-19Documentation: ioctl-number: Update table introBagas Sanjaya
Introduction paragraph to the ioctl numbers table states that only ioctls in up to ancient Linux kernel version (v2.6.31) for x86 arch are listed. This is inaccurate as the table also lists ioctls from non-x86 archs and the kernel is continously developed (currently in v6.x). Update the paragraph accordingly. Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <20250508005838.8381-2-bagasdotme@gmail.com>
2025-05-09Documentation: media: Add documentation file metafmt-c3-isp.rstKeke Li
Add the file 'metafmt-c3-isp.rst' that documents the meta format of c3-isp. Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Keke Li <keke.li@amlogic.com> Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
2025-05-07Documentation: ioctl-number: Update outdated submission infoBagas Sanjaya
Much like device numbers that used to be assigned by LANANA (see commit ebdf4040c16df5 ("Documentation: update the devices.txt documentation"), ioctl numbers list is maintained by general kernel community nowadays instead of contacting Michael directly as he's long stepped down from kernel-related activity (his last LKML message was from 2003 [1] and he's in CREDITS since the beginning of kernel's git history). Also, patch (including one to update ioctl numbers list) submission now follows process as described in Documentation/process/submitting-patches.rst rather than sending patches directly to Linus as in the distant past. Update the docs to reflect that. Link: https://lore.kernel.org/r/200305261446.h4QEkBVv023861@duracef.shout.net/ [1] Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <20250502074504.26933-2-bagasdotme@gmail.com>
2025-05-02Documentation: Fix description format for powerpc RTAS ioctlsHaren Myneni
Fix the description format for the following build warnings: "Documentation/userspace-api/ioctl/ioctl-number.rst:369: ERROR: Malformed table. Text in column margin in table line 301. 0xB2 03-05 arch/powerpc/include/uapi/asm/papr-indices.h powerpc/pseries indices API <mailto:linuxppc-dev> 0xB2 06-07 arch/powerpc/include/uapi/asm/papr-platform-dump.h powerpc/pseries Platform Dump API <mailto:linuxppc-dev> 0xB2 08 arch/powerpc/include/uapi/asm/papr-physical-attestation.h powerpc/pseries Physical Attestation API <mailto:linuxppc-dev>" Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Haren Myneni <haren@linux.ibm.com> Fixes: 43d869ac25f1 ("powerpc/pseries: Define papr_indices_io_block for papr-indices ioctls") Fixes: 8aa9efc0be66 ("powerpc/pseries: Add papr-platform-dump character driver for dump retrieval") Fixes: 86900ab620a4 ("powerpc/pseries: Add a char driver for physical-attestation RTAS") Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com> Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com> Closes: https://lore.kernel.org/linux-next/20250429181707.7848912b@canb.auug.org.au/ Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20250430022847.1118093-1-haren@linux.ibm.com
2025-04-17Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-6.15-rc3). No conflicts. Adjacent changes: tools/net/ynl/pyynl/ynl_gen_c.py 4d07bbf2d456 ("tools: ynl-gen: don't declare loop iterator in place") 7e8ba0c7de2b ("tools: ynl: don't use genlmsghdr in classic netlink") Signed-off-by: Jakub Kicinski <kuba@kernel.org>