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Linux 5.8 has been released on Sun, 2 Aug 2020.

Summary: This release adds: memory management changes to improve the behaviour of systems under thrashing situations; a event notification mechanism built on top of standard pipes that splices messages from the kernel into pipes opened by userspace; support for having different procfs mounts with different mount options each one; a Kernel Concurrency Sanitizer that helps to find data race bugs; make it possible to use pidfds with setns(2) for easier attachment to the namespaces of a process; support for Shadow Call Stack and Branch Target Identification in ARM64 to prevent security exploits; support for Inline Encryption hardware; new CAP_BPF and CAP_PERFMON capabilities for BPF and performance monitoring programs; and IPv6 MPLS support. As always, there are many other new drivers and improvements.

1. Prominent features

1.1. Better behavior in memory thrashing situations

The reclaim code that balances between swapping and cache memory reclaim tries to predict likely reuse of a memory page. When it fails it cannot detect when the cache is thrashing pathologically, or when the system is in the middle of a swap storm. This code has been tuned over time to a point where even in the presence of large amounts of cold anonymous memory and a capable swap device, the VM refuses to even seriously scan these pages, and can leave the page cache thrashing needlessly. The proliferation of fast random IO devices such as SSDs has made this undesirable behavior more noticeable.

This release sets out to address this. Since Linux 3.15, the kernel has exact tracking of refault IO - the ultimate cost of reclaiming the wrong pages. This allows to use an IO cost based balancing model that is more aggressive about scanning anonymous memory when the cache is thrashing, while being able to avoid unnecessary swap storms. This release base the LRU balance on the rate of refaults on each list, times the relative IO cost between swap device and filesystem (swappiness), in order to optimize reclaim for least IO cost incurred. The swapiness sysctl can also now be raised up to 200 to force the kernel to use swapping, which can be useful with in-memory swap, like zram or zswap.

1.2. Kernel Concurrency Sanitizer

The Kernel Concurrency Sanitizer (KCSAN) is a data race detector for the kernel. Key priorities in KCSAN's design are lack of false positives, scalability, and simplicity. KCSAN uses compile-time instrumentation to instrument memory accesses and it is supported in both GCC and Clang.

Documentation: The Kernel Concurrency Sanitizer (KCSAN)

Recommended LWN article: Concurrency bugs should fear the big bad data-race detector (part 1)

1.3. Kernel event notification mechanism

This release adds an event notification mechanism built on top of standard pipes, it splices notification messages from the kernel into pipes opened by userspace. The pipe is opened in a special mode, and its internal buffer is used to hold messages generated by the kernel, which are then read out by read(2). The owner of the pipe tells the kernel which sources it would like to watch through that pipe, and filters may also be emplaced on a pipe so that certain source types and subevents can be ignored if they’re not of interest. In this release, the only event source is for keys/keyrings, such as linking and unlinking keys and changing their attributes, which will be used by Gnome.

Documentation: General notification mechanism

Recommended LWN article: A kernel event notification mechanism

1.4. Private procfs instances

Procfs was historically tied to PID namespaces, this has the effect that all new procfs mounts are just a mirror of the internal one; any change, any mount option update, any new future introduction will propagate to all other procfs mounts in the same PID namespace.

This release allows to have several procfs mounts with different mounts options within the same PID namespace. The main aim of this work is to have on embedded systems one supervisor for apps. It also adds some convenient mount options that let a private procfs mount to show only ptraceable processes in the procfs, which allows to support lightweight sandboxes in Embedded Linux. Or a mount option that allows to hide non-pid inodes.

1.5. Using pidfds to attach to namespaces

This release makes it possible to use pidfds to attach to the namespaces of a process, i.e. they can be passed as the first argument to the setns(2) syscall. When a pidfd is passed, multiple namespace flags can be specified in the second argument and setns(2) will then attach the caller to all the specified namespaces all at once or to none of them. Eg: setns(pidfd, CLONE_NEWPID | CLONE_NEWNS | CLONE_NEWNET);

These features support various use-cases where callers setns to a subset of namespaces to retain privilege, perform an action and then re-attach another subset of namespaces. Apart from reducing the number of syscalls needed to attach to all currently supported namespaces, this also allows to setns to a set of namespaces atomically, this is useful for a standard container manager interacting with a running container.

1.6. Shadow Call Stack and Branch Target Identification for improved security on ARM64

This release adds generic support for Clang's Shadow Call Stack on ARM64, which uses a shadow stack to protect function return control flow from buffer overruns on the main stack.

There is also support for ARMv8.5-BTI in both user- and kernel-space. This allows branch targets to limit the types of branch from which they can be called and additionally prevents branching to arbitrary code.

Recommended LWN article: Some near-term arm64 hardening patches

1.7. Support for Inline Encryption hardware

This release supports Inline Encryption in the block layer. Inline Encryption hardware allows software to specify an encryption context (an encryption key, crypto algorithm, data unit num, data unit size, etc.) along with a data transfer request to a storage device, and the inline encryption hardware will use that context to en/decrypt the data. The inline encryption hardware is part of the storage device, and it conceptually sits on the data path between system memory and the storage device.

Recommended LWN article: Inline encryption for filesystems

1.8. Introduce CAP_BPF and CAP_PERFMON security capabilities

Using BPF has required the CAP_SYS_ADMIN capability to run. This means that software that needs to use BPF needs that capability, which grants way too many privileges. This releases grants access to BPF functionality with a new CAP_BPF capability combined with CAP_PERFMON , CAP_NET_ADMIN and some of them kept under CAP_SYS_ADMIN . The user process has to have: CAP_BPF to create maps and do other sys_bpf() commands, CAP_BPF and CAP_PERFMON to load tracing programs, and CAP_BPF plus CAP_NET_ADMIN to load networking programs.

This release also adds the CAP_PERFMON capability for performance monitoring and observability.

Recommended LWN article: CAP_PERFMON — and new capabilities in general

1.9. IPv6 MPLS support

This release extends the Multi-Protocol Label Switching support to IPv6.

1.10. bridge: Add support for Media Redundancy Protocol (MRP)

This release adds support for the Media Redundancy Protocol is a data network protocol standardized by International Electrotechnical Commission as IEC 62439-2. It allows rings of Ethernet switches to overcome any single failure with recovery time faster than STP. It is primarily used in Industrial Ethernet applications.

2. Core (various)

(FEATURED) Add Kernel Concurrency Sanitizer (KCSAN) commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

(FEATURED) Add a general notification queue concept and add an event source for keys/keyrings, such as linking and unlinking keys and changing their attributes. Key/keyring notifications are desirable because if you have your kerberos tickets in a file/directory, your Gnome desktop will monitor that and tell you if your credentials cache changes. The notification queue is built on top of a standard pipe. Messages are effectively spliced in. The pipe is opened with a special flag: pipe2(fds, O_NOTIFICATION_PIPE) . The pipe is then configured and messages are read out of the pipe. LSM hooks are included: A set of hooks are provided that allow an LSM to rule on whether or not a watch may be set, and a hook to allow an LSM to rule on whether or not a particular message may be posted to a particular queue commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

(FEATURED) Add support for Clang's Shadow Call Stack mitigation, which uses a separately allocated shadow stack to protect against return address overwrites commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

(FEATURED) namespaces: make it possible to use pidfds to attach to the namespaces of another process, i.e. they can be passed as the first argument to the setns(2) syscall. Multiple namespace flags can be specified in the second setns() argument and setns() will attach the caller to all the specified namespaces all at once or to none of them. The obvious example where this is useful is a standard container manager interacting with a running container: pushing and pulling files or directories, injecting mounts, attaching/execing any kind of process, etc. It also allows to switch to a set of namespaces atomically commit, commit, commit

VFS (FEATURED) procfs: support multiple private instances commit, commit, commit, commit, commit, commit, commit, commit Add faccessat2(2) syscall. POSIX defines faccessat() as having a fourth "flags" argument, while the linux syscall doesn't have it. Glibc tries to emulate AT_EACCESS and AT_SYMLINK_NOFOLLOW , but AT_EACCESS emulation is broken. This release adds a new faccessat(2) syscall with the added flags argument and implement both flags commit utimensat(2): AT_EMPTY_PATH support, this makes it possible to use utimensat on an O_PATH file (including symlinks) commit Allow unprivileged whiteout creation commit Have syncfs() return error when there are writeback errors commit, commit statx(2): add mount ID commit and mount_root commit

Support setting sysctl parameters from kernel command line in the form of sysctl.vm.something=1 commit, commit, commit, commit, commit

cgroup: add cpu.stat file to root cgroup commit

dynamic_debug: add an option to enable dynamic debug for modules only commit

EFI GOP: Add the ability to use a command-line option to switch the gop's display mode. The options supported are: video=efifb:mode=n to choose a mode; video=efifb:<xres>x<yres>[-(rgb|bgr|<bpp>)] to specify mode by resolution and optionally color depth; and video=efifb:auto to let the EFI stub choose the highest resolution mode available commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Make initrd file loader configurable commit Add a basic printf implementation for the EFI stub to use commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

io_uring Add tee(2) support commit Add support for enabling/disabling notifications on a registered eventfd commit, commit Allow IORING_OP_POLL with double waitqueues commit Enable closing of the ring itself commit Export cq overflow status to userspace by adding new IORING_SQ_CQ_OVERFLOW flag commit io_uring: call statx directly commit, commit, commit, commit

PM: allow to disable snapshot device commit

init: allow to configure the default init commit

kcov: collect coverage from usb soft interrupts commit, commit, commit, commit, commit, commit, commit

Introduce sysctl hung_task_all_cpu_backtrace to print all traces when a hung task is detected commit

panic: add sysctl oops_all_cpu_backtrace to dump all CPUs backtraces on oops event commit

panic: Add panic_on_taint boot option in order to provide a simple and generic way to stop execution and catch a coredump when the kernel gets tainted by any given taint flag commit

Locking Introduce the concept of local_locks, which are strictly per CPU and satisfy the constraints required by PREEMPT_RT commit, commit, commit, commit, commit, commit, commit Prototype RCU usable from idle, exception, offline commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

Build Support 'userprogs' syntax commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Add variables for compression tools, eg make GZIP=pigz BZIP2=pbzip2 commit objtool Implement noinstr validation (no-instrument) to ensure critical code (entry for now, idle later) run no unexpected code commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Support compressed debug info commit Enable compilation of objtool for all architectures commit, commit, commit Changes to check retpoline code commit, commit, commit, commit, commit, commit, commit

kgdb: Support late serial drivers; enable early debug w/ boot consoles commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

3. File systems

BTRFS Speedup dead root detection during orphan cleanup, eg. when there are many deleted subvolumes waiting to be cleaned commit Read repair/direct I/O improvements commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Snapshot creation with inherited qgroup will mark the qgroup inconsistent, requires a rescan commit btrfs send will emit file capabilities after chown, this produces a stream that does not need postprocessing to set the capabilities again commit Deal with a few ENOSPC corner cases commit, commit, commit, commit, commit

CIFS Add new parm nodelete , which allows standard permission checks on the server to work, but prevents on the client any attempts to unlink a file or delete a directory on that mount point commit Add support for idsfromsid on create and also for chgrp/chown allowing ability to save owner information more naturally for some workloads. Improves getattr when SMB3.1.1 posix extensions are negotiated by using new query info level commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Ensure several mount parameters work properly on multiuser mounts for non-root users commit, commit, commit, commit, commit, commit

FSCRYPT Make '-o test_dummy_encryption' support v2 policies commit, commit, commit, commit Add support for IV_INO_LBLK_32 policies commit

EXT4 Improve handling of ENOSPC with multi-threaded use-case commit, commit, commit, commit, commit Enable support for per-file/directory DAX operations commit, commit, commit, commit, commit, commit, commit, commit, commit Support xattr gnu.* namespace for the Hurd commit

XFS Enable per-file/per-directory DAX operations commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

F2FS Introduce sysfs/data_io_flag to attach REQ_META/FUA commit Support read iostat commit Support partial truncation on compressed inode commit Support fiemap on compressed inode commit compress: support lzo-rle compress algorithm commit Introduce F2FS_IOC_RESERVE_COMPRESS_BLOCKS commit and F2FS_IOC_RELEASE_COMPRESS_BLOCKS commit Add compressed/gc data read IO stat commit

OVERLAYFS Use index dir as work dir commit, commit, commit

PSTORE mtd: support crash log to block and mtd device commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

SQUASHFS squashfs: migrate from ll_rw_block usage to BIO - decreases boot time by close to 40% when using squashfs for the root file-system commit

AFS Various improvements: Improve callback processing, improve keeping NAT or firewall channels open, improving detection of delayed or lost callbacks, determine aliasing of cells, improve the fileserver rotation commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

OCFS2 Mount shared volume without ha stack commit

EROFS Convert to use the new mount fs_context api commit

EXFAT Add boot region verification commit

FAT Improve the readahead for FAT entries commit



4. Memory management

(FEATURED) Balance LRU lists based on relative thrashing: The reclaim code that balances between swapping and cache reclaim tries to predict likely reuse based on in-memory reference patterns alone. The balancing code has been tuned over time to a point where it mostly goes for page cache and defers swapping until the VM is under significant memory pressure. Since commit a528910e12ec Linux has exact tracking of refault IO - the ultimate cost of reclaiming the wrong pages. This allows us to use an IO cost based balancing model that is more aggressive about scanning anonymous memory when the cache is thrashing, while being able to avoid unnecessary swap storms commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

swap: speed up swapoff by properly updating readahead statistics commit

swap: improve swap scalability reduce lock contention on swap cache from swap slots allocation commit

swap: improve swap scalability by trying to scan more free slots even when fragmented commit

memory_hotplug: Interface to add driver-managed system ram commit, commit, commit

Expand the atomic DMA pools for the various possible gfp requirements as a means to prevent an unnecessary depletion of lowmem. This allows devices that required unencrypted memory to do non-blocking allocations through the DMA API commit, commit, commit, commit, commit, commit, commit

Expand the cases khugepaged can handle and switch anon-THP copy-on-write handling to 4k commit, commit, commit, commit, commit, commit, commit, commit

memcg Expose root cgroup's memory.stat commit Add workingset_restore in memory.stat commit Slow down swap allocation as the available space gets depleted. It adds a memory.swap.high knob, which can be used to protect the system from SWAP exhaustion. The mechanism used for penalizing is similar to memory.high penalty (sleep on return to user space) commit, commit, commit, commit Optimize memory.numa_stat like memory.stat commit Reworks memcg to charge swapin pages directly at swapin time, rather than at fault time, which may be much later, or not happen at all commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

Improvements about lowmem_reserve and /proc/zoneinfo commit, commit, commit

Change readahead API commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

Parallelize deferred struct page init commit, commit, commit, commit, commit, commit, commit, commit

Add a new mmap locking API wrapping mmap_sem calls commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

5. Block layer

loop: Add LOOP_CONFIGURE ioctl. This allows userspace to completely setup a loop device with a single ioctl, removing the in-between state where the device can be partially configured commit

Add support for Inline Encryption to the block layer. Inline Encryption hardware allows software to specify an encryption context (an encryption key, crypto algorithm, data unit num, data unit size, etc.) along with a data transfer request to a storage device, and the inline encryption hardware will use that context to en/decrypt the data. The inline encryption hardware is part of the storage device, and it conceptually sits on the data path between system memory and the storage device commit, commit, commit, commit, commit

Device Mapper dm crypt: support using encrypted keys commit Add emulated block size target. Its main purpose is to emulate 512 byte sectors on 4K native disks commit dma-zoned: Add a new metadata version 2, which brings the following improvements: UUIDs and labels, extend random zones by an additional regular disk device, and tertiary superblock support commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit dm mpath: add Historical Service Time Path Selector. It keeps an exponential moving average of the service time for each path, and uses this along with the number of inflight requests to estimate future service time for a path commit dm ebs: pass discards down to underlying device commit dm bufio: implement discard commit dm writecache: improve performance on DDR persistent memory (Optane) commit dm-zoned: improve cache performance commit, commit, commit, commit, commit, commit dm-zoned: multiple drive support commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

CEPH Add support for replica reads (balanced and localized reads) to rbd and ceph commit, commit, commit, commit, commit Add perf metrics support commit, commit, commit, commit Add support for RADOS compressible/incompressible allocation hints commit, commit

bcache: asynchronous devices registration commit, commit

6. Tracing, perf and BPF

(FEATURED) Introduce CAP_PERFMON to secure system performance monitoring and observability commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

BPF (FEATURED) Introduce CAP_BPF to split BPF operations that are allowed under CAP_SYS_ADMIN into combination of CAP_BPF , CAP_PERFMON , CAP_NET_ADMIN and keep some of them under CAP_SYS_ADMIN . The user process has to have: CAP_BPF to create maps and do other sys_bpf() commands, CAP_BPF and CAP_PERFMON to load tracing programs, and CAP_BPF plus CAP_NET_ADMIN to load networking programs commit, commit, commit bpftool: Allow probing for CONFIG_HZ from kernel config commit Add get{peer,sock}name cgroup attach types to the BPF sock_addr programs in order to enable rewriting sockaddr structs commit, commit, commit, commit Add sk_msg and networking helpers to all networking programs with perfmon_capable() capabilities commit, commit, commit, commit, commit Implement a new BPF ring buffer, as presented at BPF virtual conference. It presents an alternative to perf buffer, following its semantics closely, but allowing sharing same instance of ring buffer across multiple CPUs efficiently commit, commit, commit, commit, commit The bpf iterator provides in-kernel aggregation abilities for kernel data. This can greatly improve performance compared to e.g., iterating all process directories under /proc commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Introduce a new bpf_link type for attaching to network namespace commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Add rx_queue_mapping to bpf_sock commit Sharing bpf runtime stats with BPF_ENABLE_STATS commit, commit, commit Add various observability APIs to bpf_link commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Add support for XDP programs in DEVMAP entries commit, commit, commit, commit, commit Extending bpf_setsockopt with SO_BINDTODEVICE sockopt commit, commit, commit Allow TC programs to call BPF_FUNC_skb_change_head , it allows TC eBPF programs to modify and forward (redirect) packets from interfaces without ethernet headers (for example cellular) to interfaces with (for example ethernet/wifi) commit Allow any port in bpf_bind helper commit, commit, commit, commit Enable BPF programs to fetch sockets from SOCKMAP/SOCKHASH by doing a map lookup commit, commit, commit Allow a bunch of existing sk lookup and skb cgroup id helpers, and adds two new bpf_sk_{,ancestor_}cgroup_id helpers to be used in cgroup skb programs commit, commit, commit, commit, commit bpf_{g,s}etsockopt for struct bpf_sock_addr commit Adjust uapi for devmap prior to kernel release commit, commit Enable more helpers for BPF_PROG_TYPE_CGROUP_{DEVICE, SYSCTL, SOCKOPT} commit Narrow loads for bpf_sock_addr.user_port commit, commit Add bpf_ktime_get_boot_ns() as a mirror of bpf_ktime_get_ns() based around CLOCK_BOOTTIME instead of CLOCK_MONOTONIC commit cgroup: allow multi-attach program to replace itself commit libbpf: Add API to consume the perf ring buffer content commit libbpf: Add BTF-defined map-in-map support commit, commit, commit bpftool: Allow unprivileged users to probe features commit

Perf: perf annotate: Add basic support for bpf_image commit Add a benchmark for synthesis performance in a new benchmark collection called 'internals' Add a multi-threaded version of the internals synthesize benchmark commit, commit, commit perf bench: Add event synthesis benchmark commit, commit, commit, commit Improvements for kallsyms__parse , which improve perf record startup time commit, commit, commit Stitch LBR call stack commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit perf config: Add stat.big-num support commit Make Perf tool aware of SELinux access control commit, commit, commit perf list: Add metrics to command line usage commit Share events between metrics commit, commit, commit, commit, commit, commit, commit perf probe: Accept the instance number of kretprobe event commit perf record: Add --num-thread-synthesize option to specify number of threads to run for event synthesis commit perf record: Implement --switch-output-event commit, commit, commit, commit, commit, commit, commit, commit, commit perf script: Add flamegraph.py script commit perf stat: Support overall statistics for interval mode commit, commit, commit, commit, commit perf tools: Add optional support for libpfm4 commit perf tools: Support CAP_PERFMON capability commit

tracing: Make synthetic events a separate option commit, commit

tracing: histogram internals doc, hist_debug, and misc commit, commit, commit

7. Virtualization

VMBus channel interrupt reassignment. This feature can be used for load balancing or other purposes (e.g. CPU offlining) commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

KVM Add a per-VM capability for halt polling, KVM_CAP_HALT_POLL commit Add halt-polling cpu usage stats commit tools/kvm_stat: add logfile support commit, commit, commit tools/virtio: Add --batch option commit, --batch=random option commit, --reset commit

Add UAPIs to support migration for VFIO devices commit, commit, commit, commit, commit, commit, commit, commit

vfio-pci: Block user access to disabled device MMIO commit, commit, commit

vDPA: doorbell mapping commit, commit, commit, commit, commit

virtio-mem: Paravirtualized memory hot(un)plug commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

vmxnet3: upgrade to version 4 (with several new features which includes offload support for tunnel packets, support for new commands the driver can issue to emulation, change in descriptor fields, etc) commit, commit, commit, commit

8. Cryptography

jitter: SP800-90B compliance commit

engine: support for parallel and batch requests commit, commit

9. Security

LSM: Add hook to set*gid syscalls commit

lockdown: Allow unprivileged users to see lockdown status commit

audit: log audit netlink multicast bind and unbind commit

apparmor: provides a /proc/self/attr/apparmor/ subdirectory. Enabling userspace to use the apparmor attributes without having to worry about collisions with selinux or smack on interface files in /proc/<pid>/attr commit

SELinux A number of improvements to various SELinux internal data structures to help improve performance commit, commit, commit Add a new SELinux policy version which allows for a more space efficient way of storing the filename transitions in the binary policy. Given the default Fedora SELinux policy with the unconfined module enabled, this change drops the policy size from ~7.6MB to ~3.3MB. The kernel policy load time dropped as well commit



10. Networking

Add RFC 2863 Oper status testing support. An interface is placed into this state when a self test is performed using ethtool commit, commit, commit

Add infrastructure in ethtool and phylib support for triggering a cable test and reporting the results commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

New sysctl to turn off nexthop API compat mode which is on by default but provides the ability to turn off compatibility mode allowing systems to run entirely with the new routing API if they wish to. Old route API behaviour and support is not modified by this sysctl commit, commit, commit

(FEATURED) IPv6: add MPLS support commit, commit, commit, commit, commit

IPv6: Implement the upcoming rev of RFC4941 (IPv6 temporary addresses) commit

netlink: add infrastructure to expose policies to userspace commit

namespaces: enable to inherit devconf from current namespace. The goal is to be able to inherit the initial devconf parameters from the current netns, ie the netns where this new netns has been created. This is useful in a containers environment where /proc/sys is read only. For example, if a pod is created with specifics devconf parameters and has the capability to create netns, the user expects to get the same parameters than his 'init_net', which is not the real init_net in this case commit

Introduce netns_bpf for BPF programs attached to netnamespace commit

Relax SO_TXTIME CAP_NET_ADMIN check to allow QUIC/UDP applications to use EDT model so that pacing can be offloaded to the kernel (sch_fq) or the NIC commit

TCP: Implement SACK compression commit, commit, commit

TCP: Allow traceroute -Mtcp for unprivileged users commit

IPv6: support RFC 6069 (TCP-LD) commit

Add IPv6 encapsulation support for ESP over UDP and TCP commit, commit

XDP Introduce AF_XDP buffer allocation API commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit XDP extend with knowledge of frame size commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit XDP: Add egress_ifindex to xdp context for bpf programs to see the Tx device commit

bridge (FEATURED) Add support for Media Redundancy Protocol(MRP), which allows rings of Ethernet switches to overcome any single failure with recovery time much faster than achievable with Spanning Tree Protocol commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Allow enslaving some DSA master network devices commit, commit, commit, commit mrp: Add support for MRA role commit, commit, commit

802.11 Unprotected Beacon frame RX indication commit, commit Initial definitions for S1G (802.11ah) commit, commit, commit, commit Support bigger kek/kck key length commit Support multicast RX registration commit Allow SA-QUERY processing in userspace commit Implement Operating Mode Notification extended NSS support commit Support control port TX status reporting commit Add support to configure TID specific Tx rate configuration commit

devlink: Add support for control packet traps commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

Packet scheduler flow_dissector, cls_flower: Add support for multiple MPLS Label Stack Entries commit, commit sch_fq: add horizon attribute commit Implement classifier-action terse dump mode commit, commit, commit, commit

dsa Allow forwarding of redirected IGMP traffic commit Add GRO support via gro_cells commit

erspan: Add type I frame format version 0 commit

inet_diag Add cgroup v2 ID to common inet diag message attributes commit Extends inet diag with cgroup v2 ID attribute and filter, which allows investigate sockets on per cgroup basis commit, commit

Netfilter Address NETFILTER_CFG issues commit, commit, commit, commit, commit ctnetlink: add kernel side filtering for dump commit nftables: Dynamic device updates for flowtables commit, commit, commit, commit, commit, commit, commit nft_nat: add netmap support commit

Support for fdb ECMP nexthop groups commit, commit, commit, commit, commit

qrtr: Add MHI transport layer commit

sit: handle userspace requests for various ioctls commit

smc Add event-based framework for LLC msgs commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Preparations for SMC-R link failover commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Add failover processing commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Add and delete link processing commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Extent buffer mapping and port handling commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

TIPC Add support for broadcast rcv stats dumping commit Enable broadcast retrans via unicast commit Improves the TIPC broadcast's performance with the 'Gap ACK blocks' mechanism similar to unicast before commit

Bluetooth Add BT_MODE socket option commit Experimental feature support commit, commit, commit, commit, commit, commit, commit Add framework for Microsoft vendor extension commit Add support for Read Local Simple Pairing Options commit Add support for reading security information commit Always request for user confirmation for Just Works (LE SC) commit Always request for user confirmation for Just Works commit Enable LE Enhanced Connection Complete event commit L2CAP: add support for waiting disconnection resp commit Add support to notify using SCO air mode commit debugfs option to unset MITM flag commit

RDMA Add Enhanced Connection Established (ECE), a new negotiation scheme introduced in IBTA v1.4 to exchange extra information about nodes capabilities and later negotiate them at the connection establishment phase commit, commit, commit, commit, commit, commit RDMA shared CQ pool commit, commit Enable asynchronous event FD per object commit, commit, commit, commit, commit, commit, commit Add support for RTRS (RDMA Transport), a reliable high speed transport library which allows for establishing connection between client and server machines via RDMA. RTRS is multipath capable and provides I/O fail-over and load-balancing functionality. RNBD (RDMA Network Block Device) is a pair of kernel modules (client and server) that allow for remote access of a block device on the server over RTRS protocol commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

psample: Add tunnel support commit

11. Architectures

ARM Device Tree updates The Renesas shmobile platform gains support for "RZ/G1H" (r8a7742), a high-end 32-bit industrial SoC and the iW-RainboW-G21D-Qseven-RZG1H board/SoM commit, commit, commit, commit, commit, commit, commit, commit Add new SoC Realtek RTD1195, an older Cortex-a7 based relative of the RTD12xx chips commit Add new SoCs Realtek RTD1395 and RTD1619, three SoCs used in both NAS devices and Android Set-top-box designs, along with the "Horseradish", "Lion Skin" and "Mjolnir" reference platforms; the Mele X1000 and Xnano X5 set-top-boxes and the Banana Pi BPi-M4 single-board computer commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Add SoC Rockchips RK3326, low-end 64-bit SoC along with the Odroid-GO Advance game console commit, commit, commit Add AMLogic S905D based Smartlabs SML-5442TW TV box commit, commit Add AMLogic S905X3 based ODROID-C4 SBC commit Add AMLogic S922XH based Beelink GT-King Pro TV box commit, commit, commit, commit Add Allwinner A20 based Olimex A20-OLinuXino-LIME-eMMC SBC commit, commit Add Aspeed ast2500 based BMCs in Facebook x86 "Yosemite V2" and YADRO OpenPower P9 "Nicole" commit, commit Marvell Kirkwood based Check Point L-50 router commit Mediatek MT8173 based Elm/Hana Chromebook laptops commit Microchip SAMA5D2 "Industrial Connectivity Platform" reference board commit, commit NXP i.MX8m based Beacon i.MX8m-Mini SoM development kit commit Octavo OSDMP15x based Linux Automation MC-1 development board commit, commit Qualcomm SDM660/SDM630 platform and the Xiaomi Redmi Note 7 (lavender) phone commit, commit, commit Realtek RTD1295 based Xnano X5 TV Box commit, commit STMicroelectronics STM32MP1 based Stinger96 single-board computer and IoT Box commit, commit Samsung Exynos4210 based based Samsung Galaxy S2 phone commit, commit Socionext Uniphier based Akebi96 SBC commit, commit TI am5729 based Beaglebone-AI development board commit Arm Juno/VFP/Vexpress/Integrator commit, commit colibri: introduce device trees with UHS-I support commit stm32: Add IoT Box board support commit, commit The PXA platform drops support for Compulab's pxa2xx boards that had rather unusual flash and PCI drivers but no known users remaining commit coresight Describe CoreSight topology using sysfs links commit, commit, commit, commit, commit, commit Add CPU power management for CPU bound CTI devices commit, commit etm4x: Add support for Neoverse N1 ETM commit etm4x: Add support for Qualcomm SC7180 SoC commit tegra: fuse: Add custom SoC attributes commit qcom: cmd-db: Add debugfs dumping file commit ti: add k3 platforms chipid module driver commit perf arm-spe: Add support for synthetic events commit, commit, commit ARM64 Add missing 32 bit system registers (ID_PFR2, ID_DFR1 and ID_MMFR5) and add missing features bits on all existing system registers (32 and 64 bit) commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit crash_core: Export KERNELPACMASK in vmcoreinfo commit, commit (FEATURED) Branch Target Identification support commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Add support for protecting the kernel and vDSO with BTI including code compiled with the BPF JIT at runtime commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Allow the compat vdso (32b) to be compiled as either THUMB2 (default) or ARM commit BPF JIT Optimizations commit, commit, commit Support enabling dirty log gradually in small chunks commit



11.1. MIPS

Identify Loongson-2K processors commit

Add page soft dirty tracking commit

ingenic: Add support for GCW Zero prototype commit

CPUCFG emulation future-proofing & HWCAP addition commit, commit, commit

Loongson-3: Add some unaligned instructions emulation commit

Loongson: Add support for perf tool commit

perf: Add hardware perf events support for new Loongson-3 commit

Prepare MIPS-arch code for Baikal-T1 SoC support commit, commit, commit, commit, commit, commit, commit, commit, commit

KVM: Add Loongson-3 support (Host Side) commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

Remove support for LASAT commit

Remove PMC MSP71xx platform commit

Remove NEC MARKEINS/EMMA commit

11.2. X86

Fixes for the new SRBDS security issue. SRBDS is an MDS-like speculative side channel that can leak bits from the random number generator (RNG) across cores and threads. New microcode serializes the processor access during the execution of RDRAND and RDSEED. This ensures that the shared buffer is overwritten before it is released for reuse. This is equivalent to a full bus lock, which means that many threads running the RNG instructions in parallel have the same effect as the same amount of threads issuing a locked instruction targeting an address which requires locking of two cachelines at once commit, commit, commit, commit

Add an initrdmem= option to specify initrd physical address commit

platform Add Elkhart Lake SCU/PMC support commit Add Slim Bootloader firmware update signaling driver commit ISST: Add new PCI device ids commit thinkpad_acpi: Add support for dual fan control commit touchscreen_dmi: Add info for the MP-man MPWIN895CL tablet commit touchscreen_dmi: Add info for the ONDA V891 v5 tablet commit touchscreen_dmi: Add info for the Trekstor Yourbook C11B commit touchscreen_dmi: Add touchscreen info for techBite Arc 11.6 commit touchscreen_dmi: add Vinga J116 touchscreen commit

Remove CONFIG_DOUBLEFAULT on 32 bits commit

Drop deprecated DISCONTIGMEM support for 32-bit commit

amd_nb: Add AMD family 17h model 60h PCI IDs commit

Introduce TPAUSE instruction that suspends execution in a lower power state until the TSC (Time Stamp Counter) exceeds a certain value commit, commit, commit

binfmt_elf: Update READ_IMPLIES_EXEC logic for modern CPUs commit, commit, commit, commit, commit, commit

Support XSAVES supervisor states in preparation for new features that will make use of supervisor xstates commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

mce: Add mce=print_all option commit

resctrl: Support wider MBM counters commit, commit, commit, commit, commit, commit, commit

split_lock: Add Icelake microserver and Tigerlake CPU models commit

tsc: Add tsc_early_khz command line parameter commit

intel_th Add Emmitsburg PCH support commit Add Jasper Lake CPU support commit Add Tiger Lake PCH-H support commit

iommu/vt-d: Add page request draining support commit, commit, commit, commit, commit

perf rapl: Add AMD Fam17h RAPL support commit rapl: Add Ice Lake RAPL support commit perf: Add hardware performance events support for Zhaoxin CPU commit perf intel-pt: Sampling improvements commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit perf intel-pt: Add support for synthesizing branch stacks for regular events commit, commit, commit, commit, commit, commit, commit, commit, commit

powercap/intel_rapl: add support for ElkhartLake commit

efi: Support builtin command line commit

KVM VMX: enable X86_FEATURE_WAITPKG in KVM capabilities commit Improve latency for single target IPI fastpath commit nSVM: migration support commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Add module param to force TLB flush on root reuse commit Support full width counting commit Interrupt-based mechanism for async_pf 'page present' notifications commit, commit, commit, commit, commit, commit, commit Nested Shared Virtual Address (SVA) VT-d support: Shared virtual address (SVA), a.k.a, Shared virtual memory (SVM) on Intel platforms allow address space sharing between device DMA and applications. SVA can reduce programming complexity and enhance security. This enables SVA virtualization, i.e. enable use of SVA within a guest user application commit, commit, commit, commit, commit, commit, commit, commit

hyper-v: add support for synthetic debugger commit, commit, commit, commit, commit, commit, commit, commit

11.3. POWERPC

crypto/nx: Enable GZIP engine and provide userpace API commit, commit, commit, commit, commit, commit, commit, commit, commit

powerpc/papr_scm: Add support for reporting nvdimm health commit, commit, commit, commit, commit, commit

Initial Prefixed Instruction support: A future revision of the ISA will introduce prefixed instructions. A prefixed instruction is composed of a 4-byte prefix followed by a 4-byte suffix. This series enables prefixed instructions and extends the instruction emulation to support them commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

powerpc/32: Disable KASAN with pages bigger than 16k commit

Modernise powerpc 40x commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

Use hugepages to map kernel mem on 8xx commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

Base support for POWER10 commit, commit, commit, commit, commit, commit

hv-24x7: Expose chip/sockets info to add json file metric support for the hv_24x7 socket/chip level events commit, commit, commit, commit, commit

Enables memory hot-remove after reboot on pseries guests commit

Track and expose idle PURR and SPURR ticks commit, commit, commit, commit, commit

xmon: Support 2nd DAWR commit

Add stress_slb kernel boot option to increase SLB faults and stress test some code commit

11.4. RISCV

Add KGDB and KDB support commit, commit, commit, commit, commit

Allow device trees to be built into the kernel commit

K210: Add a built-in device tree commit

Use 16KB kernel stack on 64-bit commit

RV64 BPF JIT Optimizations commit, commit, commit, commit

11.5. S390

Expose new port attribute for PCIe functions commit

Add pci=norid } when on, disallow the use a new firmware field, RID commit

qeth: add debugfs file for local IP addresses commit

nvme ipl commit and reipl commit

vfio-ccw: Channel Path Handling commit, commit, commit, commit, commit, commit, commit, commit

vfio-ccw: Enable transparent CCW IPL from DASD commit

11.6. ARC

Allow users to specify -mcpu commit

Support loop buffer (LPB) disabling commit

11.7. M68K

mcf5441x: add support for esdhc mmc controller commit

11.8. SH

Remove sh5 support commit

11.9. PARISC

Add sysctl file interface panic_on_stackoverflow commit

12. Drivers

12.1. Graphics

Managed DRM resources, a little internal framework for managed resources tied to the drm_device lifetime commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

Intel Global sseu pinning commit perf: add OA interrupt support commit, commit, commit Per-engine default property values in sysfs commit Tigerlake GEN12 enabled. Cherryview full-ppgtt support commit Tigerlake SAGV support commit, commit, commit Add new PCI IDs to TGL commit Add YUV444 packed format support for skl+ commit Port sync for skl+ commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Add debugfs entry for DP phy compliance commit Add connector debugfs for all connectors commit Add i915_lpsp_capability debugfs commit Add i915_lpsp_status debugfs attribute commit Drop stage_pool debugfs commit

amdgpu Introduce secure buffer object support (trusted memory zone) commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Support FP16 pixel format commit Introduces ACQUIRE_MEM packet submission at the begining of each gfx IB if requested by user mode client. This is helpful in solving issues with cache coherency during amdgpu_test and Vulkan CTS tests commit, commit, commit, commit FRU chip access support commit VCN DPG (powergating) enablement commit Add autodump debugfs node for gpu reset commit Add HDCP caps debugfs commit p2p dma-buf support commit gfx10 soft recovery commit amdkfd GWS resource management commit, commit, commit Track GPU memory utilization per process commit Report PCI domain in topology commit

nouveau gv100-: Add support for interlaced modes commit Support NVIDIA format modifiers commit vGPU detection commit

adv7511 HDMI SPDIF support commit

lima devfreq + cooling device support commit Add error sysfs to export error task dump commit Add max_error_tasks module parameter commit Enable runtime pm commit

MSM Add adreno a405 support commit, commit Add support for A640 and A650 commit, commit, commit, commit, commit, commit, commit, commit, commit Add support for color processing commit, commit Add syncobj support commit

vkms Enable cursor by default commit

rockchip Add support for afbc commit

bridge chrontel-ch7033: Add a new driver commit Add NWL MIPI DSI host controller support commit dw-hdmi: Add support for RGB limited range commit

panel Add ASUS TM5P5 NT35596 panel driver commit Add Starry KR070PE2T commit Add panel driver for Leadtek LTK050H3146W commit Add support for rm69299 visionox panel commit Support for boe,tv105wum-nw0 dsi video mode panel commit nt39016: Add support for 50 Hz refresh rate commit nt39016: Add support for multiple modes commit simple: Add BOE NV133FHM-N61 commit simple: Add BOE NV133FHM-N62 commit simple: Add Ivo M133NWF4 R0 commit simple: Add support for AUO G121EAN01.4 panel commit simple: Add support for AUO G156XTN01.0 panel commit simple: Add support for AUO G190EAN01 panel commit

backlight: qcom-wled: Add support for WLED5 peripheral that is present on PM8150L PMICs commit

12.2. Power Management

ACPI: Add support for DPTF (Dynamic Platform and Thermal Framework) battery participant device support commit, commit

cpuidle: Make cpuidle governor switchable to be the default behaviour commit, commit, commit, commit, commit, commit

Improve SBS battery support commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

thermal imx_sc_thermal: Add hwmon support commit k3: Add support for bandgap sensors commit



12.3. Storage

nvme-fc/nvmet-fc: Add FC-NVME-2 disconnect association support commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

nvme-rdma/nvmet-rdma: Add metadata/T10-PI support commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

SCSI dh: Add Fujitsu device to devinfo and dh lists commit qedi: Add modules param to enable qed iSCSI debug commit scsi_debug: random doublestore verify commit, commit, commit, commit, commit, commit, commit, commit scsi_debug: Add ZBC support commit, commit, commit, commit, commit, commit, commit sd: Add zoned capabilities device attribute commit Introduce Zone Append for writing to zoned block devices commit, commit, commit, commit, commit, commit, commit, commit, commit, commit ufs: Add write booster feature support commit, commit, commit ufs: Allow WriteBooster on UFS 2.2 devices commit ufs: support LU Dedicated buffer mode for WriteBooster commit, commit, commit, commit, commit, commit, commit, commit hisi_sas: Add SAS_RAS_INTR0 to debugfs register name list commit



12.4. Drivers in the Staging area

media: imx: imx7-mipi-csis: Add missing RAW formats commit, add support for 10-bit YUV 4:2:2 commit

atomisp: add support for different PMIC configurations commit

tegra-video: Add Tegra210 Video input driver commit

wfx: allow to join IBSS networks commit

wfx: add support for hardware revision 2 and further commit

12.5. Networking

Bluetooth btbcm: Add 2 missing models to subver tables commit btbcm: Added 003.006.007, changed 001.003.015 commit btrtl: Add support for RTL8761B commit btusb: Add support for Intel Bluetooth Device Typhoon Peak (8087:0032) commit Add BTUSB and quirk support for the driver to confirm that the reported LE_states can be trusted commit, commit, commit btusb: Enable MSFT extension for Intel ThunderPeak devices commit hci_qca: Add support for Qualcomm Bluetooth SoC QCA6390 commit hci_qca: Enable WBS support for wcn3991 commit

Infiniband: hfi1: Accelerated IP using the rdma netdev mechanism commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

RDMA Improved EFA statistics commit, commit, commit hns: Support 0 hop addressing commit, commit, commit, commit, commit, commit mad: Remove snoop interface commit

ath10k Add support to handle targets without TrustZone commit, commit, commit sdio: add support for rx/tx bitrate reporting commit, commit, commit, commit Add flush tx packets for SDIO chip commit Enable VHT160 and VHT80+80 modes commit, commit Improve throughout of TX of sdio commit, commit Enable rx duration report default for wmi tlv commit

ath11k Add sta debugfs support to configure ADDBA and DELBA commit Add support for multibus support commit Add support to reset htt peer stats commit Add tx hw 802.11 encapsulation offloading support commit

atlantic A2 support commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit QoS implementation commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

ax88179_178a: Implement ethtool_ops set_eeprom commit

bcmgenet: add support for Wake on Filter commit, commit, commit, commit, commit, commit, commit

brcmfmac: adds the second p2p connection support commit, commit

carl9170: remove P2P_GO support commit

cxgb4: Improve and tune TC-MQPRIO offload commit, commit, commit

dpaa2-eth: Add PFC support commit, commit, commit, commit, commit, commit, commit Add support for bulk enqueue in terms of XDP_TX packets commit Add channel stat to debugfs commit

dsa felix: tc taprio and CBS offload support commit, commit, commit mv88e6xxx: 88e6390 10G serdes support commit Traffic support for dsa_8021q in vlan_filtering=1 mode commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit tc-gate offload for SJA1105 DSA switch commit, commit, commit, commit, commit, commit sja1105: offload the Credit-Based Shaper qdisc commit

ena Add support for reporting of packet drops commit Add support for the rx offset feature commit Add unmask interrupts statistics to ethtool commit

enetc: Introduce a flow gate control action and apply IEEE commit, commit, commit, commit

dwmac: add ethernet glue logic for NXP imx8 chip commit

hinic Add SR-IOV support commit, commit, commit Add link_ksettings ethtool_ops support commit Add set_channels ethtool_ops support commit Add set_ringparam ethtool_ops support commit

hns3 Provide an interface for the client to query the CMDQ's status commit Add support for dumping UC and MC MAC list commit Adds support for reading module eeprom info commit Add support for dumping MAC reg in debugfs commit

ice Add VF promiscuous support commit Add XDP Tx to VSI ring stats commit Add support for tunnel offloads commit Flow Director support commit, commit, commit, commit, commit, commit Implement Accelerated Receive Flow Steering commit Support adding 16 unicast/multicast filter on untrusted VF commit

igc Add ECN support for TSO commit Add partial generic segmentation offload (GSO partial) support commit Enable NETIF_F_HW_TC flag by default commit Add Receive Error Counter commit Add new device IDs for i225 part commit Add initial TSN qdiscs offloading commit, commit Enable NFC rules based on source MAC address commit, commit, commit, commit Add support to eeprom, registers and link self-tests commit

ionic: add more ethtool stats commit

iwlwifi Add ACPI DSM support commit Add new cards for AX family commit Add support for range request command version 9 commit and version 10 commit Support version 9 of WOWLAN_GET_STATUS notification commit Enable A-MSDU in low latency mode commit Remove iwlmvm's tfd_q_hang_detect module parameter commit Stop supporting swcrypto and bt_coex_active module parameters commit pcie: add n_window/ampdu to tx_queue debugfs commit

Remove fw_monitor module parameter commit

ks8851: Implement Parallel bus operations commit

lan743x: Added fixed link and RGMII support commit

mac80211_hwsim Advertise support for multicast RX registration commit Claim support for setting Beacon frame TX legacy rate commit

mlx5 Driver part of the RDMA-CM ECE series commit, commit, commit, commit, commit, commit, commit, commit Add support for drop action in DV steering commit Add steering support for default miss commit, commit, commit, commit Support TX port affinity for VF drivers in LAG mode commit Add support for COPY steering action commit Add support for RDMA TX FT headers modifying commit Add support to get xmit slave commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Set flow_label and RoCEv2 UDP source port for datagram QP commit, commit, commit, commit, commit, commit, commit Introduce IPsec Connect-X offload hardware bits and structures commit Introduce TLS RX offload hardware bits commit

mlx5e New mlx5 kconfig flag for TC support commit, commit, commit, commit Support for MPLS over UPD encap and decap TC offloads commit, commit, commit, commit Support for self looback to allow communication between ipoib pkey child interfaces on the same host commit, commit Support VM traffics failover with bonded VF representors and e-switch egress/ingress ACLs commit, commit, commit, commit, commit, commit, commit

mscc: mscc: allow forwarding ioctl operations to attached PHYs commit, commit Support programmable pins for Ocelot PTP driver commit, commit, commit, commit, commit, commit Ocelot MAC_ETYPE tc-flower key improvements commit, commit, commit

mt76 Add MediaTek IEEE 802.11ax devices - MT7915E commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Enable TDLS support commit Enable p2p support commit Introduce WoW support to mt7663 driver commit, commit, commit, commit, commit, commit, commit hw scan, scheduled scan and noise floor estimation commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit mt7615: add more useful Tx mib counters commit mt7615: add passive mode for hw scan commit mt7615: add support for MT7611N commit mt7615: disable aspm by default commit mt7615: enable MSI by default commit mt7615: enable scs for mt7663 driver commit mt7663: add support to sched scan with randomise addr commit mt7663: add the possibility to load firmware v2 commit mt7663u: enable AirTimeFairness commit mt76x02u: Add support for newer versions of the XBox One wifi adapter commit mt76x0: pci: add mt7610 PCI ID commit mt76x2u: introduce Mercury UD13 support commit MT7915: add TxBF support commit, commit, commit, commit, commit, commit, commit Add rx queues info to mt76 debugfs commit mt7915: add spatial reuse support commit

Add the driver for the MediaTek STAR Ethernet MAC currently used on the MT8* SoC family commit

mvneta: Add 2500BaseX support for SoCs without comphy commit

mwifiex: Add support for NL80211_ATTR_MAX_AP_ASSOC_STA commit

p54usb: add AirVasT USB stick device-id commit

PHY Add Broadcom BCM54140 support commit Add phy shared storage commit, commit, commit at803x: add cable diagnostics support commit at803x: add cable diagnostics support for ATH9331 and ATH8032 commit at803x: add downshift support commit at803x: add support for AR8032 PHY commit broadcom: cable tester support commit, commit, commit, commit bcm54140: add hwmon support commit broadcom: Add support for BCM53125 internal PHYs commit broadcom: add support for BCM54811 PHY commit Raw PHY TDR data commit, commit, commit, commit, commit, commit, commit mdio: add IPQ40xx MDIO support commit, commit, commit micrel: add phy-mode support for the KSZ9031 PHY commit Provide KAPI for SQI commit, commit tja11xx: add cable-test support commit tja11xx: add initial TJA1102 support commit Provide support for PHY master/slave configuration commit, commit

ptp: Add adjust_phase to ptp_clock_caps capability commit

qed/qede: critical hw error handling commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

qed*: Add support for pcie advanced error recovery commit, commit

qed: Add xrc core support for RoCE commit, commit

qed: Add EDPM mode type for user-fw compatibility commit

qmi_wwan: add support for Quectel EG95 LTE modem commit

rt2800: enable MFP support unconditionally commit

rtw88 Add support for Realtek 8723DE PCI commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Add support for set/get antennas commit

stmmac dwmac-meson8b Ethernet RX delay configuration commit, commit, commit, commit, commit, commit, commit, commit Add support for VLAN promiscuous mode commit

ti: k3: introduce common platform time sync driver - cpts commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

wlcore: Add support for IGTK key commit

12.6. Audio

fireface: add support for RME FireFace 802 commit

fireface: add support for RME Fireface UFX commit

firewire-motu: add support for MOTU UltraLite-mk3 (FireWire only model) commit

hda realtek: Add LED class support for micmute LED commit realtek: Enable headset mic of Acer TravelMate B311R-31 with ALC256 commit realtek: enable headset mic of ASUS ROG Zephyrus G14(G401) series with ALC289 commit Add ElkhartLake HDMI codec vid commit Intel: add missing PCI IDs for ICL-H, TGL-H and EKL commit Add autodetection for SoundWire commit Add sienna_cichlid audio asic id for sienna_cichlid up commit

Adds support for polling and non-blocking read for hwdep interface commit, commit

usb-audio: Add duplex sound support for USB devices using implicit feedback commit

usb-audio: Add Pioneer DJ DJM-900NXS2 support commit

usb-audio: RME Babyface Pro mixer patch commit

ASoC Add initial ZL38060 driver commit Intel: Skylake: Automatic DMIC format configuration according to information from NHLT commit Intel: boards: sof-wm8804: support for Hifiberry Digiplus boards commit Intel: boards: support Elkhart Lake with rt5660 commit Add Renoir ACP driver commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit da7213: Add regulator support commit max98390: Added Amplifier Driver commit max9867: add digital microphone controls commit max9867: add mono playback switch commit mmp-sspa: Make sound work on DT-based MMP2 machines commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit rt1016: Add the rt1016 support commit snd-sof-intel-hda-common: add hda_model parameter and pass it to HDA codec driver commit tlv320adcx140: Add controls for PDM clk commit tlv320adcx140: Add support for configuring GPI pins commit nau8810: add AUX related dapm widgets and routes commit

SOF Add support for SOF on i.MX8M commit, commit, commit, commit, commit Intel: add PCI ID for CometLake-S commit Intel: add PCI ID for ElkhartLake commit Intel: add PCI IDs for ICL-H and TGL-H commit Support for an extended firmware manifest, which helps retrieve capabilities directly from the firmware file instead of the current IPC mechanism commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Add probe support extend data commit

soundwire: bus_type: add sdw_master_device support commit, commit, commit, commit, commit

soundwire: add sysfs support commit, commit, commit

ac97: Remove sound driver for ancient platform commit

12.7. Tablets, touch screens, keyboards, mouses

Add driver for the Cypress CY8CTMA140 touchscreen commit

Add support for Azoteq IQS269A commit

elan_i2c: add more hardware ID for Lenovo laptops commit

i8042: add Lenovo XiaoXin Air 12 to i8042 nomux list commit

mms114: add extra compatible for mms345l commit

synaptics: enable InterTouch for ThinkPad X1E 1st gen commit

Delete unused GP2AP002A00F driver commit

Remove msm-vibrator driver commit

HID mcp2221: add GPIO functionality support commit asus: Add support for multi-touch touchpad on Medion Akoya E1239T commit



12.8. TV tuners, webcams, video capturers

Add V4L2_CAP_IO_MC to indicate that input and output are controlled by the Media Controller instead of V4L2 commit, commit, commit, commit, commit

Add support for the CODA960 JPEG decoder to the coda-vpu driver commit, commit

Report camera properties commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

Add H264 profile and levels commit, commit

Add VIDIOC_SUBDEV_QUERYCAP ioctl commit, commit

media: rockchip: Add the rkvdec driver commit, commit, commit, commit

coda: add RC enable controls commit

coda: jpeg: support optimized huffman tables commit

si2157: Analog tuning and optimizations commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

dvb-usb: Add Cinergy S2 PCIe Dual Port support commit

i2c: Add ov2740 image sensor driver commit

ov8856: Add devicetree support commit

vimc: Make use of V4L2_CAP_IO_MC commit

vimc: Add support for {RGB,BGR,GBR}888 bus formats on debayer source pad commit, commit, commit

sh_veu: Remove driver commit

12.9. Universal Serial Bus

roles: Enable role-switch uevent reporting commit

chipidea: Enable user-space triggered role-switching commit

chipidea: introduce imx7d USB charger detection commit

chipidea: udc: add software sg list support commit

dwc3: gadget: Handle streams commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

dwc3: meson: add OTG support for GXL/GXM commit, commit, commit, commit, commit, commit, commit, commit

dwc3: Add support for DWC_usb32 IP commit

dwc3: pci: add support for the Intel Jasper Lake commit

dwc3: pci: add support for the Intel Tiger Lake PCH -H variant commit

gadget: tegra-xudc: Add Tegra194 support commit

Add XHCI, EHCI and OHCI support for Broadcom STB SoS's commit, commit, commit, commit

renesas-xhci: Add the renesas xhci driver commit

serial: ch341: add new Product ID for CH340 commit

serial: cypress_m8: enable Simply Automated UPB PIM commit

serial: option: add GosunCn GM500 series commit

serial: option: add Quectel EG95 LTE modem commit

serial: option: add Telit LE910C1-EUX compositions commit

serial: qcserial: add DW5816e QDL support commit

typec: mux: intel_pmc_mux: Support for static SBU/HSL orientation commit

xhci: Add support for Renesas controller with memory commit

12.10. Serial Peripheral Interface (SPI)

bcm-qspi: add support for MSPI sys clk 108Mhz commit

dw: Add Elkhart Lake PSE DMA support commit

dw: Add support for DesignWare DWC_ssi commit

dw: Add support for Intel Keem Bay SPI commit

dw-apb-ssi: Add Intel Keem Bay support commit

pxa2xx: Add support for Intel Tiger Lake PCH-H commit

spi-amd: Add AMD SPI controller driver support commit

spi-rockchip: add support for spi slave mode commit

spidev: Add support for Octal mode data transfers commit

stm32-qspi: Add pm_runtime support commit

12.11. Real Time Clock (RTC)

Add new VL flag for backup switchover commit

mt6397: Add support for the MediaTek MT6358 RTC commit

12.12. Pin Controllers (pinctrl)

intel: Add Intel Jasper Lake pin controller support commit

qcom: Add sm8250 pinctrl driver commit

sh-pfc: r8a7790: Add r8a7742 PFC support commit

12.13. Multi Media Card (MMC)

Export device/vendor ids from Common CIS for SDIO cards commit

Expose info about enhanced rpmb support commit

host: add Coldfire esdhc support commit

host: meson-mx-sdhc: new driver for the Amlogic Meson SDHC host commit

sdhci: arasan: Add support for Versal Tap Delays commit

sdhci-esdhc-imx: Add HS400 support for i.MX6SLL commit

sdhci-of-arasan: Add support for Intel Keem Bay commit

sdhci-of-dwcmshc: add suspend/resume support commit

sdhci-pci-gli: Add Genesys Logic GL9763E support commit

12.14. Memory Technology Devices (MTD)

MLC in SLC mode commit, commit, commit, commit, commit, commit, commit, commit

rawnand: Remove the cmx270 NAND controller driver commit

rawnand: arasan: Add new Arasan NAND controller commit

rawnand: arasan: Support the hardware BCH ECC engine commit

rawnand: brcmnand: support v2.1-v2.2 controllers commit

spi-nor: Add support for Cypress cy15x104q commit

spi-nor: Add support for s25fs128s1 commit

spi-nor: macronix: Add support for mx25l51245g commit

spi-nor: macronix: Add support for mx25u51245g commit

spi-nor: spansion: Enable dual and quad read for s25fl256s0 commit

12.15. Industrial I/O (iio)

Add SEMTECH SX9310/9311 sensor driver commit

accel: Add bma150 family support to bma180 commit, commit, commit, commit, commit, commit, commit

accel: st_sensors: add support for LIS2HH12 commit

adi-axi-adc,ad9647: Add support for AD9467 ADC commit, commit, commit, commit, commit, commit, commit, commit

adc: Add MAX1241 driver commit

adc: Add scaling support to exynos adc driver commit

adc: ad7476: Add AD7091 support commit

adc: mp2629: Add support for mp2629 ADC driver commit

bmg160: Add support for BMI088 chip commit

chemical: Add support for external Reset and Wakeup in CCS811 commit

chemical: add atlas-ezo-sensor initial support commit

chemical: atlas-sensor: add RTD-SM module support commit

imu: Add support for adis16475 commit

imu: inv_mpu6050: add debugfs register r/w interface commit

imu: st_lsm6dsx: Add sensor hub device LIS3MDL commit

light: cm32181: Add support for ACPI enumeration commit

light: cm32181: Add support for the CM3218 commit

magnetometer: ak8974: add Alps hscdtd008a commit

proximity: Add driver support for vcnl3020 proximity sensor commit

vcnl: Add interrupts support for VCNL4010/20 commit, commit, commit, commit, commit

12.16. Multi Function Devices (MFD)

Add Gateworks System Controller core driver commit

Add support for PMIC MT6360 commit

mp2629: Add support for mps battery charger commit

12.17. Pulse-Width Modulation (PWM)

Add support for Azoteq IQS620A PWM generator commit

jz4740: Add support for the JZ4725B commit

sun4i: Support direct clock output on Allwinner A64 commit

tegra: Support dynamic clock frequency configuration commit

12.18. Inter-Integrated Circuit (I2C + I3C)

Add Qualcomm CCI I2C driver commit

cadence: Added slave support commit

designware: Add Baikal-T1 System I2C support commit

designware: Allow slave mode for PCI enumerated devices commit

iproc: add support for SMBUS quick cmd commit

mediatek: Add i2c ac-timing adjust support commit

npcm7xx: Add Nuvoton NPCM I2C controller driver commit

npcm7xx: Add support for slave mode for Nuvoton commit

pxa: implement generic i2c bus recovery commit

slave-eeprom: add support for 24c512 EEPROMs commit

tegra: Add support for the VI I2C on Tegra210 commit

12.19. Hardware monitoring (hwmon)

Add amd_energy driver to report core and package energy sensors, based on RAPL MSR for AMD family 17h and above CPUs commit, commit

ina2xx: Implement alert functions commit

k10temp: Add AMD family 17h model 60h PCI match commit

lm70: Add support for ACPI commit

lm90: Add max6654 support to lm90 driver commit

nct7904: Add watchdog function commit

pmbus: Driver for Maxim MAX16601 commit

Add Gateworks System Controller support commit

hwmon: Add Baikal-T1 SoC Process, Voltage and Temp sensor support commit, commit

Add Baikal-T1 PVT sensor driver commit

12.20. General Purpose I/O (gpio)

gpio-f7188x: Add GPIO support for F81865 commit

Add GPIO Aggregator commit

12.21. Leds

Add aw2013 driver commit

Add sgm3140 driver commit

ariel: Add driver for status LEDs on Dell Wyse 3020 commit

12.22. DMA engines

idxd: export hw version through sysfs commit

12.23. Cryptography hardware acceleration

chcr: support for 48 byte key_len in aes-xts commit

chtls: IPv6 support for inline TLS commit

crypto/nx: Enable GZIP engine and provide userpace API commit, commit, commit, commit, commit, commit, commit

ccp: Add support for SEV-ES to the PSP driver commit

hisilicon: add debugfs for DFX commit, commit, commit, commit, commit, commit, commit

hisilicon: add controller reset support commit, commit, commit, commit, commit

hisilicon: add vfs_num module parameter for hpre/sec commit

12.24. PCI

Add Loongson PCI Controller support commit

Add endpoint driver for R-Car PCIe controller commit, commit, commit, commit, commit, commit, commit, commit

P2PDMA: Add AMD Zen Raven and Renoir Root Ports to whitelist commit

aardvark: Add PHY support commit

rcar: Add endpoint mode support commit

rcar: Add suspend/resume commit

uniphier: Add Socionext UniPhier Pro5 PCIe endpoint controller driver commit

12.25. Non-Transparent Bridge (NTB)

intel: Add Icelake (gen4) support for Intel NTB commit

12.26. Thunderbolt

Add support for Intel Tiger Lake commit

12.27. Clock

Add Baikal-T1 SoC Clock Control Unit support commit, commit, commit, commit

Ingenic: Add CGU driver for X1830 commit

clk-si5341: Add support for the Si5345 series commit

intel: Add CGU clock driver for a new SoC commit

mediatek: Add MT6765 clock support commit

mmp2: Enable Audio and GPU on MMP2 and MMP3 commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

mmp2: Add audio clock controller driver commit

Add the missing clock drivers and dts nodes to enable the GPU on both SM8150 and SM8250

qcom: gcc-msm8939: Add MSM8939 Generic Clock Controller commit

qcom: gcc: Add GPU and NPU clocks for SM8150 commit

qcom: gcc: Add missing UFS clocks for SM8150 commit

Add GCC clock driver support commit, commit, commit

renesas: cpg-mssr: Add R8A7742 support commit

socfpga: agilex: add clock driver for the Agilex platform commit

tegra: Add custom CCLK implementation commit

tegra: Implement Tegra210 EMC clock commit

vc5: Add support for IDT VersaClock 5P49V6965 commit

timer-ti-dm: Add clockevent and clocksource support commit

12.28. PHY ("physical layer" framework)

Add driver for Qualcomm IPQ40xx USB PHY commit

cadence: salvo: add salvo phy driver commit

intel: Add driver support for ComboPhy commit

qcom-qmp: Add QMP V3 USB3 PHY support for SC7180 commit

qcom-qmp: Add SM8150 QMP USB3 PHY support commit

qcom-snps: Add SNPS USB PHY driver for QCOM based SOCs commit

ti: am654: add support for USB super-speed commit, show up in regmap debugfs commit

12.29. EDAC (Error Detection And Correction)

amd64: Add AMD family 17h model 60h PCI IDs commit

12.30. 1-Wire (W1)

w1_therm Add alarm sysfs entry commit Add bulk read support to trigger multiple conversion on bus commit Add eeprom sysfs entry commit Add ext_power sysfs entry commit Add resolution sysfs entry commit Add sysfs entry to output only temperature commit



12.31. Firmware

xilinx: Add xilinx specific sysfs interface commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

SCMI Notifications Core Support commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

imx: support SCU channel type commit, commit, commit, commit

12.32. Various

habanalabs Add GAUDI ASIC support. Similar to GOYA, GAUDI includes a set of eight TPC cores, a GEMM engine and DMA channels to move data between host and different memories of the ASIC. Each engine has a hardware queue manager (QMAN) attached to it, which exposes 4 streams to allow complex programs with control flows (in GOYA you had 1 stream per QMAN) commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Add INFO IOCTL opcode for time sync information commit Support hwmon_reset_history attribute commit Add signal/wait to CS IOCTL operations commit, commit, commit, commit Enable trace data compression (profiler) commit

Add Baikal-T1 SoC APB/AXI/L2 drivers commit, commit, commit, commit, commit

bus: Add driver for Integrator/AP logic modules commit

fpga: dfl: fme: add performance reporting support commit, commit

fpga: dfl: support multiple opens on feature device node commit

interconnect: Add imx support via devfreq commit, commit, commit, commit, commit

irqchip: Three Loongson irqchip support commit, commit, commit, commit, commit, commit

iommu: Add Allwinner H6 IOMMU driver commit

irqchip: RISC-V per-HART local interrupt controller driver commit

mailbox: Add support for Qualcomm IPCC commit

mailbox: imx: Support runtime PM commit

mailbox: qcom: Add ipq6018 apcs compatible commit

mailbox: sprd: Add Spreadtrum mailbox driver commit

mei: me: add tiger lake point device ids for H platforms commit

mfd: Add support for the MediaTek MT6358 PMIC commit

misc: pci_endpoint_test: Add Device ID for RZ/G2E PCIe controller commit

mptcp: add new sock flag to deal with join subflows commit

of: reserved-memory: Support lookup of regions by name commit

of: reserved-memory: Support multiple regions per device commit

opp: Add support for parsing interconnect bandwidth commit

opp: Expose bandwidth information via debugfs commit

pinctrl: imx: Add imx8dxl driver commit

ptp: Add adjphase function to support phase offset control commit

remoteproc: qcom: Add callbacks for remoteproc events commit, commit, commit

remoteproc: Add PAS and MSA based Modem support commit, commit, commit, commit, commit, commit, commit

remoteproc: Add support for runtime PM commit

remoteproc: ingenic: Added remoteproc driver commit

remoteproc: qcom: pas: Add SM8250 PAS remoteprocs commit

reset: hi6220: Add support for AO reset controller commit

reset: imx7: Add support for i.MX8MP SoC commit

scs: Add support for Clang's Shadow Call Stack (SCS) commit

spi: spidev_test: Add support for Octal mode data transfers commit

tee Add support for session's client UUID generation commit, commit Enhance TEE kernel client interface commit, commit



13. List of Pull Requests

14. Other news sites