Linux 5.5 was released on 26 Jan 2020.

This release includes support in Btrfs for RAID1 with 3 and 4 copies and new checksum types; KUnit, a kernel unit testing framework; many improvements to io_ring(2) largely focused around networked I/O; Airtime Queue Limits for fighting bufferbloat on Wi-Fi and provide a better connection quality; support for mounting a CIFS network share as root filesystem and for using the same session across multiple network interfaces; support adding alternative names for network devices; many BPF improvements that allow to generate faster BPF code; and support for NFS cross device offloaded copy. As always, there are many other new drivers and improvements.

1. Coolest features

1.1. Btrfs RAID1 with 3 and 4 copies and more checksum alternatives

Btrfs' RAID1 always had 2 copies. This release incorporates two new block group profiles: RAID1 with 3- and 4- copies, aka RAID1C34. This is an incompatible feature (the incompat bit will be removed if all the RAID1C34 profiles are removed). The recommended use of RAID1C3 is replacement of RAID6 profile on metadata, this brings a more reliable resiliency against 2 device loss/damage.

In this release Btrfs also adds support for new checksums (per-filesystem, set at mkfs time): xxhash, a fast hash (crc32c successor) with a 64-bit digest. Also, two strong cryptographic hashes (both 256-bit): sha256 (slower, FIPS), blake2b (faster). There is also a significant improvement of parallel lseek SEEK_CUR/SEEK_SET/SEEK_END , it is speed up by 80%.

1.2. Many improvements to io_uring(2)

This release includes several new features in io_uring(2). Improving the support for networked IO (and hence unbounded request completion times) is one of the major themes. There is also support for never drop events on an overflowed CQ ring, allow processes to set the size of the CQ ring, support for absolute timeouts, support for generic cancellations, and other improvements and speed ups.

1.3. KUnit, an unit testing framework for the kernel

This release incorporates KUnit, a lightweight unit testing and mocking framework for the Linux kernel. These tests are able to be run locally on a developer's workstation without a VM or special hardware - using the User-Mode Linux architecture. KUnit provides facilities for defining unit test cases, grouping related test cases into test suites, providing common infrastructure for running tests, and much more.

Documentation: KUnit - Unit Testing for the Linux Kernel

Recommended LWN article: A kernel unit-testing framework

1.4. Airtime Queue Limits for a better Wi-Fi connection quality

The Linux kernel has been fighting for years the phenomena know as bufferbloat: undesirable high latency that comes from network equipment buffering too much data. In order to improve the bufferbloat problems caused by the Wi-Fi stack, this release implements an Airtime-based Queue Limit to make the CoDel queuing work effectively with wireless drivers that utilized firmware/hardware offloading. For more details, see the following article:

Recommended LWN article: Making WiFi fast

1.5. CIFS as root file system and multichannel support

In this release, CIFS can be used as root file system. This release also adds support for "multichannel": it lets the client "share" the same SMB session over multiple TCP (or RDMA) connection.

1.6. Support alternative names for network interfaces

This release introduces the ability to add alternative names for network interfaces. The goal is to: overcome the name size limitations, allow to have multiple names at the same time (multiple udev patterns), and allow to use alternative names as handle for commands.

1.7. BPF improvements: type checking and BPF Trampoline

With introduction of Compile Once Run Everywhere in libbpf and in LLVM and BPF Type Format (BTF), the BPF verifier is finally ready for the next step in program verification. Now it can use in-kernel BTF to type check BPF assembly code. This type tracking allows safer and faster BPF tracing. For more details, see the following article:

Recommended LWN article: https://lwn.net/Articles/803258/Type checking for BPF tracing

This release also introduces a BPF trampoline, which allows kernel code to call into BPF programs with practically zero overhead. There is also support for memory-mapping BPF array map and other improvements.

1.8. NFS cross-device offloaded copy

This release adds NFS client support for cross-device offloaded copy. That is, offloaded copy of a file from one source server to a different target server.

2. Core (various)

clone3(2) Add CLONE_CLEAR_SIGHAND . This lets callers clear all signal handler that are not SIG_DFL or SIG_IGN at process creation time. This originated as a feature request from glibc to improve performance and eliminaate races in their posix_spawn() implementation. Mutually exclusive with CLONE_SIGHAND to not disturb other thread's signal handler commit, commit Add support for choosing a specific PID (main motivation is CRIU). In order to choose a specific pid the caller must have CAP_SYS_ADMIN in all owning user namespaces of the target pid namespaces commit, commit

(FEATURED) io_uring(2) Add support for connect(2) commit, commit Add support for accept(4) trought operation IORING_OP_ACCEPT commit, commit, commit, commit Add support for sparse file sets, which means the application can register a fileset with room for expansion. On top of that, it add IORING_REGISTER_FILES_UPDATE . This allows modifying the existing file set commit, commit Support up to 64K files (previously it was 1024) commit Support for overflowed CQ ring, never dropping events but providing backpressure on submits: if completion events are dropped when the CQ ring, certain applications may find hard or impossible to use it. So never overflow the ring, simply store requests in a backlog for later flushing. This flushing is done automatically by the kernel commit Add support for IORING_OP_ASYNC_CANCEL , which will attempt to cancel requests that have been punted to async context and are now in-flight. This works for regular read/write requests to files, as long as they haven't been started yet. For socket based IO (or things like accept4(2)), we can cancel work that is already running as well commit, commit Add IORING_FEAT_SUBMIT_STABLE . If this flag is set, applications can be certain that any data for async offload has been consumed when the kernel has consumed the SQE commit, commit, commit, commit, commit Add support for canceling an existing timeout requests with IORING_OP_TIMEOUT_REMOVE commit Support for linked timeouts with IORING_OP_LINK_TIMEOUT flag. Unlike the existing timeouts that work on purely the CQ ring, these timeouts are specifically tied to a specific command. They are meant to be used to auto-cancel a request, if it hasn't finished in X amount of time commit, commit Add support for absolute timeouts commit Application control the size of the CQ ring with IORING_SETUP_CQSIZE , instead of just making it always 2x the SQ ring size. This makes it more flexible for networked applications commit Make POLL_ADD / POLL_REMOVE scale better commit Replace io_uring workqueues with a new type of workqueues, io-wq. For more details, see this LWN article commit, commit, commit, commit, commit Add tracing events commit, commit Add mapping support for NOMMU archs commit

task scheduler: Rework the load balance. It replaces the old heuristics that have become less meaningful after the introduction of the PELT metrics, with a grounds-up load-balancing algorithm commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

Extend the seccomp(2) notifier with the SECCOMP_USER_NOTIF_FLAG_CONTINUE flag to allow for the continuation of a syscall commit, commit, commit

pidfd: Add NSpid entries to /proc/self/fdinfo; it allows the retrieval of the PID in all descendant pid namespaces commit, commit

Rework the generic CONFIG_REFCOUNT_FULL (full reference count validation) implementation using atomic_fetch_* operations so that the performance impact of the cmpxchg() loops is mitigated for common refcount operations. With these performance improvements the generic implementation of refcount_t is good enough and arch-specific implementations are no longer needed commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

(FEATURED) kunit: introduce KUnit, the Linux kernel unit testing framework commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

cgroup: Optimize single thread migration so that it doesn't need threadgroup rwsem anymore commit, commit, commit, commit

livepatch: new API to track system state changes. It helps newly installed livepatches to deal with system state modifications done be already installed livepatches commit, commit, commit, commit, commit

Build: Add dir-pkg target which just creates the same directory structures as in tar-pkg, but doesn't package anything. Useful when the user wants to copy the kernel tree on a machine using ssh, rsync or whatever commit

Configuration: Introduce a new target 'make helpnewconfig' which lists all the new options, like listnewconfig, but with the full help text of all the new options as well commit

printf: add support for printing symbolic error names commit

Remove the sysctl system call (deprecated a long time ago) commit

3. File systems

File system infrastructure iomap: Lift the XFS writeback code to iomap commit and the xfs common tracing code commit fscrypt: In preparation for adding inline encryption support to fscrypt, this patchset adds a new fscrypt policy flag which modifies the encryption to be optimized for inline encryption hardware compliant with the UFS v2.1 standard or the upcoming version of the eMMC standard. This means using per-mode keys instead of per-file keys, and in compensation including the inode number in the IVs commit, commit, commit statx(2): expose the fs-verity bit (a.k.a. FS_VERITY_FL ). This is useful because it allows applications to check whether a file is a verity file without opening it commit, commit, commit, commit

Btrfs (FEATURED) RAID1 with 3- and 4- copies commit, commit, commit, commit (FEATURED) Speed up parallel fseek on the same file commit, commit, commit send: allow clone operations within the same file commit (FEATURED) Add BLAKE2 checksumming support commit, commit (FEATURED) Add sha256 to checksumming algorithm commit (FEATURED) Add xxhash64 to checksumming algorithms commit tree-checker: Add check to detect missing inode items commit, commit Avoid getting stuck during cyclic writebacks commit sysfs: export supported checksums commit sysfs: show used checksum driver per filesystem commit

XFS Rework near mode extent allocation to fix some long tail latency problems commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Remove the biosize mount option commit Switch to use the new mount-api commit

Ceph Show tasks waiting on caps in debugfs caps file commit

CIFS (FEATURED) SMB rootfs support commit, commit (FEATURED) Multichannel support, it lets the client "share" the same SMB session over multiple TCP (or RDMA) connections commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Add support for flock commit Query attributes on file close commit

ext4 Introduce direct I/O read/write using iomap infrastructure commit, commit

F2FS Support aligned pinned file, which can guarantee no GC at all by allocating fully valid 2MB segment commit

NFS (FEATURED) Client support for cross-device offloaded copy (i.e. offloaded copy of a file from one source server to a different target server) commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

EROFS Support superblock checksum commit

HUGETBLFS Add O_TMPFILE support commit



4. Memory management

Emit tracepoint when RSS changes commit

slab: reduce time spent in new_kmalloc_cache() commit, commit, commit

vmalloc optimizations, including rework of vmap_area_lock to avoid high contention commit commit commit commit commit commit

Fix page aging across multiple cgroups commit commit commit commit commit commit commit commit commit commit commit

KASAN was incompatible with VMAP_STACK, this release supports backing vmalloc space with real shadow memory commit, commit, commit, commit

reduce mmap_sem contention and hanging ps/top under heavy write I/O commit

various vma tree handling cleanups, optimizations and fixes commit commit commit commit commit commit commit

cleanup/optimize page table access code on arches without 4 or 5-level pages support commit commit commit commit commit

various memory hot-plug fixes and optimizations 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

Introduce alloc_contig_pages() helper commit

print reserved_highatomic value on allocation failures commit

make drop_caches sysctl write-only commit

z3fold: add inter-page compaction commit

fix checking (EFAULT inconsistencies) of unmapped holes for mbind() commit commit

add O_TMPFILE support for hugetlbfs commit

hugetlbfs fixes, including error handling when setting up mounts, and performance improvements due to better locking and reduced looping commit commit commit commit commit commit commit commit commit commit

userfaultfd fixes commit commit commit commit commit

5. Block layer

Add iostat counters for flush requests commit

Zone management commands support commit, commit, commit, commit, commit, commit, commit

Zoned block device enhancements and zone report rework commit, commit, commit, commit, commit, commit, commit, commit, commit

sed-opal: Generic Read/Write Opal Tables commit, commit, commit

dm dust: add limited write failure mode commit

xen-blkback: support dynamic unbind/bind commit

6. Tracing, perf and BPF

BPF (FEATURED) Revolutionize BPF tracing and BPF C programming: With introduction of Compile Once Run Everywhere technology in libbpf and in LLVM and BPF Type Format (BTF) the verifier is finally ready for the next step in program verification. Now it can use in-kernel BTF to type check bpf assembly code. The end result is safer and faster bpf tracing. commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit (FEATURED) Introduce BPF trampoline to allow kernel code to call into BPF programs with practically zero overhead commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Add support for memory-mapping BPF array maps commit, commit, commit, commit, commit Optimize BPF tail calls for direct jumps commit, commit, commit, commit, commit, commit, commit, commit Add probe_read_user, probe_read_kernel and probe_read_user_str, probe_read_kernel_str helpers commit bpftool: Allow to read btf as raw data commit flow_dissector: add mode to enforce global BPF flow dissector commit, commit

libbpf Make bpf_helpers.h and bpf_endian.h a part of libbpf itself for consumption by user BPF programs, and add BPF_CORE_READ macros commit, commit, commit, commit, commit, commit, commit Add bpf_object__open_file() and bpf_object__open_mem() APIs that use a new approach to providing future-proof non-ABI-breaking API changes commit, commit, commit, commit Bitfield and size relocations support commit, commit, commit, commit, commit Generalize libbpf's CO-RE relocation support. In addition to existing field's byte offset relocation, libbpf now supports field existence relocations, which are emitted by Clang commit, commit, commit, commit, commit Teach bpf_object__open() (and its variants) to automatically derive BPF program type/expected attach type from section names, similarly to how bpf_prog_load() was doing it commit, commit, commit, commit, commit, commit, commit Add support for reading 'pinning' settings from BTF-based map definitions. It introduces a new open option which can set the pinning path; if no path is set, /sys/fs/bpf is used as the default. Callers can customise the pinning between open and load by setting the pin path per map, and still get the automatic reuse feature commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Extend libbpf to support shared umems and Rx|Tx-only sockets commit, commit, commit, commit, commit

perf probe: Support multiprobe events commit, commit, commit, commit, commit, commit, commit record: Add option --kcore which will put a copy of /proc/kcore, kallsyms and modules into a perf.data directory commit, commit, commit, commit, commit, commit record: Add support for limit perf output file size with --max-size commit report: Support sorting all blocks by cycles with a new option --total-cycles which sorts all blocks by 'Sampled Cycles%' commit, commit, commit, commit, commit, commit, commit report: Support --percent-limit for --total-cycles , or not showing entries under that percent commit script: Allow --time (to specify a time span of interest) with --reltime commit scripts python: exported-sql-viewer.py: Add Time chart by CPU commit, commit, commit, commit, commit, commit stat: Add --per-node option to aggregate stats per NUMA nodes commit stat: Support --all-kernel / --all-user to configure all used events to run in kernel space or run in user space commit tools: Add support for AUX area sampling commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit tools: Allow to build with -ltcmalloc commit tools: Allow to link with libbpf dynamicaly commit trace: Add syscall failure stats to -s / --summary and -S / --with-summary commit trace: Introduce --errno-summary . To be used with -s or -S , to show stats for the errnos experienced by syscalls, using only this option will trigger --summary commit trace: Introduce --filter for tracepoint events similar to what is in 'perf record', eg. perf trace -e msr:* --filter="msr!=0xc0000100" commit perf_event_{open,alloc,free,read,write}(2): Add support for LSM and SELinux checks, to allow more fine grained security permissions than the perf_event_paranoid sysctl allows commit

Introduce PERMANENT ftrace_ops flag that makes tracing not able to be disabled by disabling ftrace_enabled, in order to not surprise users of livepatching commit, commit, commit

tracing: Introduce trace event injection, useful to test applications that use trace events commit

ftrace: new features for the preempt/irqsoff tracers: implement fs notification for tracing_max_latency, and extends the preemptirq_delay_test module so that it can be used to generate a burst of closely occurring latencies commit, commit

tracing: Adding new API for kernel access to Ftrace instances commit, commit

7. Virtualization

hv: add vmbus testing tool commit

hv: vmbus: Enable VMBus protocol versions 4.1, 5.1 and 5.2 commit

hv: vmbus: Add module parameter to cap the VMBus version commit

hv: vmbus: Introduce latency testing commit

hv_balloon: Add the support of hibernation commit

hv_sock: Add the support of hibernation commit

hv: Add PCI hibernation support commit

8. Cryptography

blake2b: add blake2b generic implementation commit

blake2s: generic C library implementation commit, commit

chacha20poly1305: import from Zinc commit

curve25519: generic C library implementations commit, commit

skcipher: remove the "blkcipher" algorithm type commit

ablkcipher: remove deprecated and unused ablkcipher support commit

9. Security

selinux: allow labeling before policy is loaded commit

selinux: A policy developer can now specify glblub as a default_range default and the computed transition will be the intersection of the mls range of the two contexts commit

apparmor: Initial implementation of raw policy blob compression commit

audit: Report suspicious O_CREAT usage commit

tpm: tpm_tis_spi: Support cr50 devices commit

Limit the size of copy_to_user() and copy_from_user() calls to INT_MAX in order to catch any weird overflows in size calculations commit

10. Networking

(FEATURED) Introduce alternative names for network interfaces. The goal is to: overcome the name size limitations, allow to have multiple names at the same time (multiple udev patterns), and allow to use alternative names as handle for commands commit, commit, commit, commit, commit, commit, commit

TCP: add TCP_INFO status for failed client TFO commit

routes: When doing RX batch packet processing, Linux always repeated the route lookup for each ingress packet. When no custom rules are in place, and there aren't routes depending on source addresses, we know that packets with the same destination address will use the same dst. This change tries to avoid per packet route lookup caching the destination address of the latest successful lookup commit, commit, commit, commit, commit

bonding Balance ICMP echoes in layer3+4 mode commit, commit, commit, commit Symmetric ICMP transmit commit

bridge: implement get_link_ksettings ethtool method commit

Allow fast GRO for skbs with Ethernet header in head commit

Get IB port and node GUIDs through rtnetlink commit, commit, commit

devlink devlink: add support for devlink health reporter interface testing commit, commit, commit, commit devlink: allow devlink instances to change network namespace commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit devlink: allow to change namespaces commit, commit, commit Add couple of debugfs bools to debug devlink reload commit

lwtunnel Add options process for arp request commit and for cmp_encap commit Add options setting and dumping for erspan commit, geneve commit and vxlan commit Add support for multiple geneve opts commit

mac80211 (FEATURED) Add Airtime Queue Limits (AQL) to make CoDel work effectively with wireless drivers that utilized firmware/hardware offloading commit, commit, commit, commit, commit Expose HW conf flags through debugfs commit VLAN offload support for set_key and set_sta_vlan commit

Add 64-bit support for packet counts commit, commit, commit

netfilter Support iif matches in POSTROUTING commit Add wildcard support to hash:net,iface which makes possible to match interface prefixes besides complete interfaces names commit Adds hardware offload support for the flowtable infrastructure. This infrastructure provides a fast datapath for the classic Linux forwarding path that users can enable through policy commit, commit, commit, commit, commit, commit, commit Extend the netdev family to allow for hooking multiple devices to basechains commit, commit, commit, commit, commit Offload support for matching on the input interface commit VLAN matching offload commit, commit, commit, commit Add C-VLAN matching support commit

openvswitch Support asymmetric conntrack commit, commit Optimize openvswitch flow looking up commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

packet scheduler pie: enable timestamp-based delay calculation commit Support vxlan and erspan options commit, commit, commit, commit sch_generic: Use pfifo_fast as fallback scheduler for CAN hardware commit

SCTP Update from RFC 7829 commit, commit, commit, commit, commit Add some missing events from RFC 5061 commit, commit, commit, commit

smc: improve termination handling commit, commit, commit, commit, commit, commit, commit, commit

TIPC Add support for TIPC encryption commit, commit, commit, commit, commit Add smart nagle, a feature that works like a combination of TCP_NAGLE and TCP_CORK , but without some of the weaknesses of those commit Improve throughput between nodes in netns commit Support in-order name publication events commit

TLS: adds trace events related to TLS offload and basic MIB stats for TLS commit, commit, commit, commit, commit, commit

TLS: separate the TLS TCP Offload Engine code out and allow to compile out commit, commit, commit, commit, commit, commit

vsock: add multi-transports support. With the multi-transports support, we can use VSOCK with nested VMs (using also different hypervisors) loading both guest->host and host->guest transports at the same time. Before this series, vmci-transport supported this behavior but only using VMware hypervisor on L0, L1, etc commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

vsock/virtio: add support for MSG_PEEK commit

vxlan: implement get_link_ksettings ethtool method commit

AF_XDP: XSKMAP performance improvements commit, commit, commit

11. Architectures

11.1. ARM

New SoC descriptions Broadcom BCM2711 commit Amlogic Meson A1 and G12 commit, commit Freescale S32V234 commit Marvell Armada AP807/AP807-quad and CP115 commit, commit Realtek RTD1293 and RTD1296 commit, commit Rockchip RK3308 commit

New boards and platforms Add FriendlyARM NanoPi Duo2, an Allwinner H3 based board, with 512 MB RAM, a USB OTG port, MicroSD slot, an onboard AP6212A wifi/bluetooth module, and a CSI connector commit Amlogic: Ugoos am6, based on the Amlogic W400 (G12B) reference design using the S922X chipset commit Atmel at91: Overkiz Kizbox2/3 commit, commit Broadcom: Raspberry Pi 4, Luxul XWC-2000 commit, commit Marvell: New Espressobin flavor commit NXP: i.MX8MN LPDDR4 EVK commit, commit, i.MX8QXP Colibri, S32V234 EVB commit, Netronix E60K02 commit and Kobo Clara HD commit, Kontron N6311 and N6411 commit, commit, OPOS6UL and OPOS6ULDev commit Renesas: Salvator-XS with R-Car M3-W+ commit Rockchip: Beelink A1 (rk3308) commit, rk3308 eval boards, rk3399-roc-pc commit, commit Renesas: Initial r8a774b1 SoC device tree commit, commit Renesas: Add HiHope RZ/G2N main board support commit Marvell: Add support for Marvell CN9132-DB commit, CN9130-DB commit, CN9130 commit and CN9131-DB commit Renesas: Add HiHope RZ/G2N sub board support commit Renesas: Add Renesas R8A77961 SoC support commit Add minimal support for Droid Bionic xt875 commit Add DTS for NetCAN Plus devices commit Add DTS for NetCom Plus 1xx and 2xx device series commit, and NetCom Plus 4xx and 8xx device series commit aspeed: Add Rainier system commit aspeed: Add Tacoma machine commit mmp3: Add MMP3 SoC dts file commit, commit and Dell Wyse 3020 machine commit marvell: Declare the CN913x SoC compatibles commit

Add support for generic vDSO commit

hw_breakpoint: add more ARMv8 debug architecture versions support commit

coresight etm4x: Add missing single-shot control API to sysfs commit etm4x: Add support for ThunderX2 commit etm4x: Add view comparator settings API to sysfs commit

perf: Add CCPI2 PMU support in ThunderX2 UNCORE driver commit

perf: arm-ccn: Enable stats for CCN-512 interconnect commit

perf/imx_ddr: Add driver for DDR PMU in i.MX8MPlus commit, add enhanced AXI ID filter support commit

KVM Allow reporting non-ISV data aborts to userspace commit Allow user injection of external data aborts commit Show halt poll counters in debugfs commit

crypto chacha: import scalar accelerated ChaCha code commit curve25519: import Curve25519 ARM implementation commit, commit poly1305: incorporate OpenSSL/CRYPTOGAMS NEON implementation commit

ARM64 KVM: Expose stolen time to guests, allowing the guest to identify time when it is forcibly not executing commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Workaround for a Neoverse-N1 erratum where the CPU may fetch stale instructions under certain conditions commit, commit, commit Workaround for Cortex-A57 and A72 errata where the CPU may speculatively execute an AT instruction and associate a VMID with the wrong guest page tables (corrupting the TLB) commit Implement ftrace with regs commit crypto: gcm-ce: implement 4 way interleave commit crypto: poly1305: incorporate OpenSSL/CRYPTOGAMS NEON implementation commit perf vendor events arm64: Add some missing events for Hisi hip08 DDRC PMU commit, add some missing events for Hisi hip08 HHA PMU commit, add some missing events for Hisi hip08 L3C PMU commit



11.2. x86

Enable 5-level paging support by default commit

Extend the boot protocol to allow future extensions without hitting the setup_header size limit commit, commit, commit

Prevent user space from using CLI/STI with iopl(3): implement the IO privilege features of the iopl system call by using the IO permission bitmap in permissive mode, while trapping CLI/STI/POPF/PUSHF uses in user-space if they change the interrupt flag. For more details, see this LWN article: Emulated iopl() commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

random: invoke EFI_RNG_PROTOCOL in the x86 EFI stub to seed the kernel entropy pool commit, commit

intel-speed-select Add Cascade Lake-N support commit, commit, commit, commit, commit, commit Auto mode commit, commit, commit Extend command set for perf-profile commit Support platform with limited Intel Speed Select commit

perf: Add AUX data sampling commit, commit

Add support for RDPRU instruction which is used to give access to some processor registers that are typically only accessible when the privilege level is zero commit

Disable unreliable HPET on CFL/ICL systems commit, commit

More enablement for the Intel-compatible CPUs Zhaoxin commit, commit, commit

Converts the late loading method to load the microcode in parallel (vs sequentially currently) commit

Platforms Add System76 ACPI driver commit Support upcoming UV systems that do not have a UV HUB commit, commit, commit, commit, commit, commit, commit, commit mellanox: Add bootctl driver for Mellanox BlueField Soc commit acerhdf: Add support for Acer Aspire 7551 commit Previously the Huawei driver handled only hotkeys. After the conversion to WMI it has been expanded to support newer laptop models commit, commit, commit, commit touchscreen_dmi: Add info for the ezpad 6 m4 tablet commit chrome: wilco_ec: Add Dell's USB PowerShare Policy control commit chrome: wilco_ec: Add charging config driver commit chrome: wilco_ec: Add debugfs test_event file commit chrome: wilco_ec: Add keyboard backlight LED support commit intel_pmc_core: Add Comet Lake (CML) platform support to intel_pmc_core driver commit

perf vendor events intel: Update Cascade Lake-X events to v1.05 commit, update all the Intel JSON metrics from TMAM 3.6 commit

perf: Add PCI ID of IMC for Xeon E3 V5 Family commit

intel_th Add Comet Lake PCH-V support commit Add Elkhart Lake SOC support commit Add Ice Lake CPU support commit Add Tiger Lake CPU support commit

nVMX: Add full nested support for "load IA32_PERF_GLOBAL_CTRL" VM-{Entry,Exit} control commit, commit, commit, commit, commit, commit

KVM: nVMX: Add support for capturing highest observable L2 TSC commit, commit, commit, commit

hyperv: Allow guests to enable InvariantTSC commit

crypto: blake2s: x86_64 SIMD implementation commit

crypto: curve25519: x86_64 library and KPP implementations commit

Remove the calgary IOMMU driver commit

New macros for assembler symbols 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

11.3. PowerPC

Infrastructure for secure boot on some bare metal POWER9 machines. The firmware support is still in development, so the code here won't actually activate secure boot on any existing systems commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

xmon: Restrict when kernel is locked down commit

Support CMDLINE_EXTEND, Extend bootloader kernel arguments commit

Support for KASLR on 32-bit BookE machines (Freescale / NXP) commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

pseries: CMM: Implement balloon compaction and remove isolate notifier commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

pseries: powerpc/pseries: Enable support for ibm,drc-info property commit, commit

book3s64: Report L1TF status in sysfs commit

crypto: spe-xts - implement support for ciphertext stealing commit

KVM: Add support for secure guests under the Protected Execution Framework (PEF) Ultravisor commit, commit, commit, commit, commit, commit

KVM: Report single stepping capability commit

KVM: Book3S HV: XIVE: Show VP id in debugfs commit

11.4. MIPS

Add ARCH_HAS_FORTIFY_SOURCE support commit

Add kcov support commit ralink: Add GARDENA smart Gateway MT7688 board commit

Add support for SGI Octane (IP30) commit

Add Loongson-3A R4 basic support commit

Loongson: Add CFUCFG&CSR support commit

BPF: Disable MIPS32 eBPF JIT commit

crypto: chacha: import 32r2 ChaCha code from Zinc commit, commit poly1305: incorporate OpenSSL/CRYPTOGAMS optimized implementation commit



11.5. RISC-V

Add support for SECCOMP and SECCOMP_FILTER commit

Add multiple compression image format commit

Enable gcov commit

Add nommu support commit

Provide a flat image loader commit

provide native clint access for M-mode commit

11.6. S390

kasan: add KASAN_VMALLOC support commit

livepatch: Implement reliable stack tracing for the consistency model commit

qdio: implement IQD Multi-Write commit

qeth: support per-frame invalidation commit

qeth: use IQD Multi-Write commit

KVM: s390: count invalid yields commit

11.7. Xtensa

Add XIP kernel support commit

Make stack dump size configurable commit

11.8. ARC

Support Jump Label patching HAVE_ARCH_JUMP_LABEL commit

Support kmemleak HAVE_DEBUG_KMEMLEAK commit

Merge nSIM and HAPS Configs as both use DW UART now commit,commit,commit

ARC TLB Miss and Flush optimizations commit,commit,commit,commit

11.9. UML

Loadable BPF "Firmware" for vector drivers commit

12. Drivers

12.1. Graphics

Export different colorspace properties on DisplayPort vs HDMI

New fourcc for ARM 16x16 block format commit

syncobj: allow querying last submitted timeline value commit

Implement lazy unmapping for GEM VRAM buffers commit, commit, commit, commit

amdgpu: Implement dma-buf import/export without helpers commit, commit Vega20 RAS enablement Renoir GPU reset commit DC HDCP 1.4 Content Protection commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit BACO support for CI/VI asics commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit MSI-X support commit Arcturus EEPROM support commit, commit, commit, commit Arcturus VCN encode support commit VCN dynamic powergating on RV/RV2 commit Enable VCN2.5 encoding commit Enable KFD on POWER systems commit Add debugfs entry for reading psr state commit and to force YUV420 output commit Enable Panel Self Refresh commit Add support for Dali, a new asic based on Raven commit, commit Implement sysfs for getting dpm clock commit Report vram vendor with sysfs commit SRIOV: add navi12 pci id for SRIOV commit Add a kernel parameter for specifying the asic type commit Add navi12 pci id commit Add NAVI12 support from kfd side commit Add navi14 PCI ID commit, commit Support Navi14 in KFD commit Flag navi12 as experimental for 5.4 commit, commit Enable full ras by default commit Introduce the kfd support for Renoir commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Add sysfs interface to read pcie speed/width info in navi1x commit

Intel Support for DP HDR outputs commit, commit, commit, commit, commit, commit perf: uapi versioning for Vulkan performance query support commit, commit, OA stream dynamic reconfiguration commit Introduce DRM_I915_UNSTABLE Kconfig commit Add fake lmem testing under unstable commit BT.2020 support for DP MSA Tigerlake display/PLL/power management improvements Jasper Lake PCH support commit Enable HDCP 1.4 and 2.2 on Gen12+ commit Add second PCH ID for CMP commit Display State Buffer (DSB) support, a hardware capability which allows driver to batch submit HW programming commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Add perf support on TGL commit Add new CNL PCH ID seen on a CML platform commit Add immutable zpos plane properties commit

bridge analogix-anx78xx: add new variants commit dw-hdmi: Add Dynamic Range and Mastering InfoFrame support commit

komeda Add ACLK rate to sysfs commit Add line size support commit Add output-color format support commit Add power management support commit Add register dump support for gcu, lup and dou commit

mediatek Support rotation commit, commit, commit, commit, commit, commit, commit mipi_tx, dsi and partial crtc support for MT8183 SoC commit, commit

meson Enable DRM InfoFrame support on GXL, GXM and G12A commit

adreno Add support for Adreno 510 GPU commit

rockchip Enable DRM InfoFrame support on RK3328 and RK3399 commit

sun4i Enable DRM InfoFrame support on H6 commit

tegra DisplayPort support for Tegra 210, 186 and 194 commit, commit, commit

virtio-gpu Enable prime mmap support commit

vkms prime import support commit

vmwgfx Emulated coherent graphics memory commit, commit, commit, commit, commit, commit, commit, commit

rcar-du Add R8A774B1 support commit

hyperv Obtain screen resolution from Hyper-V host commit hyperv_fb: Support deferred IO for Hyper-V frame buffer driver commit hyperv_fb: Add the support of hibernation commit

backlight qcom-wled: Support for QCOM wled driver commit, commit, commit, commit, commit, commit, commit, commit

vram: add vram-mm debugfs file commit

12.2. Power Management

EFI Specific Purpose Memory Support. EFI 2.8 Specification introduces the EFI_MEMORY_SP ("specific purpose") memory attribute. This attribute bit replaces the deprecated ACPI HMAT "reservation hint" that was introduced in ACPI 6.2 and removed in ACPI 6.3 commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

ACPI / PMIC: Add Cherry Trail Crystal Cove PMIC OpRegion driver commit

ACPI: button: Allow disabling LID support with the lid_init_state module option commit

ACPI: EC: add support for hardware-reduced systems. This enables the use of several media keys (e.g. screen brightness up/down) on Asus UX434DA commit

cpupower: Make cpupower more accurate by removing the userspace to kernel transitions and read_msr initiated IPI delays commit, commit, commit, commit

thermal tsens: Add debugfs support commit qoriq: add thermal monitor unit version 2 support commit amlogic: Add thermal driver to support G12 SoCs commit qcom: tsens-v1: Add support for MSM8956 and MSM8976 commit Remove netlink support commit



12.3. Storage

ahci: Add support for Amazon's Annapurna Labs SATA controller commit

nvme: Add hardware monitoring support commit

nvme: hwmon: provide temperature min and max values for each sensor commit

nvmem: add Rockchip OTP driver commit

nvmem: sprd: Add Spreadtrum SoCs eFuse support commit

SCSI Add sysfs attributes for VPD pages 0h and 89h commit hisi_sas: Add ability to have multiple debugfs dumps commit, add debugfs file structure for CQ commit, add debugfs file structure for DQ commit, add debugfs file structure for IOST commit, add debugfs file structure for IOST cache commit, add debugfs file structure for ITCT commit, add debugfs file structure for ITCT cache commit, add debugfs file structure for port commit, add debugfs file structure for registers commit, add module parameter for debugfs dump count commit, add timestamp for a debugfs dump commit, commit, record the phy down event in debugfs commit lpfc: Add FA-WWN Async Event reporting commit lpfc: Add FC-AL support to lpe32000 models commit pm80xx: Controller fatal error through sysfs commit qla2xxx: Dual FCP-NVMe target port support commit storvsc: Add the support of hibernation commit target: iscsi: CHAP: add support for SHA1, SHA256 and SHA3-256 commit ufs-qcom: Add reset control support for host controller commit ufs: Add driver for TI wrapper for Cadence UFS IP commit zfcp: introduce sysfs interface for diagnostics of local SFP transceiver commit zfcp: introduce sysfs interface to read the local B2B-Credit commit zfcp: support retrieval of SFP Data via Exchange Port Data commit sr_vendor: support Beurer GL50 evo CD-on-a-chip devices commit



12.4. Drivers in the Staging area

cedrus: h264: Support multi-slice frames commit, commit, commit, commit, commit, commit

fb_seps525: New driver for SEPS525 (Syncoam) LCD Controllers commit

hp100: Move 100BaseVG AnyLAN driver to staging commit

imx: enable V4L2_PIX_FMT_XBGR32 , _BGRX32 , and _RGBX32 commit

iio: adc: ad7192: Add system calibration support commit

most: remove sysfs attr remove_link commit

olpc_dcon: allow simultaneous XO-1 and XO-1.5 support commit

rtl8723bs: Add 024c:0525 to the list of SDIO device-ids commit

wfx: Add support for Silicon Labs WiFi chip WF200 and further commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

rtl8188eu: Add device code for TP-Link TL-WN727N v5.21 commit

12.5. Networking

Bluetooth btbcm: Add entry for BCM4334B0 UART Bluetooth commit and for BCM4335A0 UART bluetooth commit hci_qca: Add support for Qualcomm Bluetooth SoC WCN3991 commit btwilink: drop superseded driver commit

RDMA iw_cxgb3: Remove the iw_cxgb3 module from kernel commit qedr: Add doorbell overflow recovery support commit qedr: Add iWARP doorbell recovery support commit

aquantia: PTP support for AQC devices commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

ath10k Add xo calibration support for wifi rf clock commit Enable MSA region dump support for WCN3990 commit Add support for hardware rfkill commit

atlantic Add msglevel configuration commit Adding ethtool physical identification commit Implement UDP GSO offload commit Implement wake_phy feature commit loopback tests via private flags commit

bcmgenet Add BCM2711 support commit Add RGMII_RXID support commit

bnx2x: Enable Multi-Cos feature commit

bnxt_en Add chip IDs for 57452 and 57454 chips commit Add TC Flower tunnel decap and rewrite actions commit, commit, commit, commit Add support for flashing the device via devlink commit Add support to collect crash dump via ethtool commit Add support to invoke OP-TEE API to reset firmware commit

brcmfmac: add support for SAE authentication offload commit

can flexcan: Add support for TX mailbox in iflag1 commit m_can: add support for handling arbitration error commit m_can: add support for one shot mode commit rx-offload: Prepare for CAN FD support commit

cxgb4 Add TC-MATCHALL classifier offload commit, commit, commit Add ETHOFLD hardware queue support commit, commit Add FLOWC based QoS offload commit Add UDP segmentation offload support commit, commit Parse and configure TC-MQPRIO offload commit Query firmware for QoS offload resources commit

dpaa2-eth add MAC/PHY support through phylink commit Add ethtool MAC counters commit dpaa_eth: add dropped frames to percpu ethtool stats commit

dsa b53: Add support for MDB commit bcm_sf2: Add support for optional reset controller line commit mv88e6xxx: add generic support to DSA for devlink resources commit, commit, commit, commit, commit mv88e6xxx: Allow config of ATU hash algorithm commit, commit mv88e6xxx: Add support for port mirroring commit ocelot: DSA driver for Vitesse Felix switch commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit sja1105: Add support for port mirroring commit sja1105: Implement state machine for TAS with PTP clock source commit

e1000e Add support for Comet Lake commit Add support for S0ix commit Add support for Tiger Lake commit

enetc Configure the Time-Aware Scheduler via tc-taprio offload commit Add ioctl() support for PHY-related ops commit Add support Credit Based Shaper(CBS) for hardware offload commit Disable EEE autoneg by default commit

stmmac: Add support for syscfg clock commit

ti: introduce cpsw switchdev based driver commit, commit

fm10k: add support for ndo_get_vf_stats operation commit

forcedeth: add xmit_more support commit

hns3 Add support for configuring VF MAC from the host commit Add support for configuring bandwidth of VF on the host commit Add support for setting VF link status on the host commit Add support for setting VF trust commit Add support for spoof check setting commit Support tx-scatter-gather-fraglist feature commit

hv_netvsc: Add the support of hibernation commit

i40e Add UDP segmentation offload support commit Allow ethtool to report SW and FW versions in recovery mode commit Enable X710 support commit Implement VF stats NDO commit

ice Add support for setting the maximum per-queue bit rate for transmit queues commit Add support for XDP commit, commit, commit, commit, commit, commit Implement DCBNL support commit Add support to query/add queues or channels on a VSI via ethtool operations commit Add ethtool -m support for reading i2c eeprom modules commit Implement VF stats NDO commit

igb Add UDP segmentation offload support commit Add stream control transmission protocol (SCTP) CRC checksum support commit, commit, commit

mac80211_hwsim Add more 5GHz channels, 5/10 MHz support commit Add support for OCB commit

ionic Add a watchdog timer to monitor heartbeat commit, commit Implement ethtool set-fec commit Implement support for rx sgl commit

iwlwifi debug: add error tables dumping support commit, add monitor dumping support commit, add periodic trigger new API support commit, add user trigger support commit, support domain changing via debugfs commit Report tx/rx antennas commit Add support for new version for D0I3_END_CMD commit scan: enable adaptive dwell in p2p commit Support scan req FW API ver 13 commit Support scan req cmd ver 12 commit

ixgbe: Add UDP segmentation offload support commit

mlx5 Allow to disable RoCE commit, commit, commit, commit, commit Software steering support for Geneve commit, commit, commit Support IPv4 and IPv6 mixed matcher commit Add devlink reload commit netfilter flowtable hardware offload support commit, commit, commit, commit, commit, commit, commit Add ToS (DSCP) header rewrite support commit, commit

mlxsw Add layer 3 devlink-trap support commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Add extended ACK for EMADs commit, commit, commit, commit, commit, commit, commit Extend QSFP EEPROM size for ethtool commit, commit Add support for 400Gbps (50Gbps per lane) link modes commit, commit

microchip: Support LAN743x PTP periodic output on any GPIO commit

mt76 Enable airtime fairness commit Improve debugfs info for mt7615/mt7603 commit, commit, commit, commit, commit mt7615: add ibss support commit

mvneta: Add XDP support commit, commit, commit, commit, commit, commit, commit

octeontx2-af: Add debugfs support to dump various HW state machine info commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

phy Add support for SFPs behind PHYs commit, commit at803x: add ar9331 support commit broadcom: add 1000Base-X support for BCM54616S commit dp83867: support Wake on LAN commit dp83869: Add TI dp83869 phy commit marvell: add PHY tunable support for more PHY versions commit marvell: add downshift support for 88E1145 commit marvell: add downshift support for M88E1111 commit marvell: support downshift as PHY tunable commit

qtnfmac: Add support for getting/setting transmit power commit

r8152 Add macpassthru support for ThinkPad Thunderbolt 3 Dock Gen 2 commit Support firmware of PHY NC for RTL8153A commit Support request_firmware for RTL8153 commit

r8169: add support for RTL8117 commit

rtl8xxxu Add support for Edimax EW-7611ULB commit Improve TX performance of RTL8723BU commit Add bluetooth co-existence support for single antenna commit

rtw88 Add software TX queue support commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit Enable 802.11ac beamformee support commit Add NL80211_EXT_FEATURE_CAN_REPLACE_PTK0 support commit Enables PCI CLKREQ and ASPM for power save commit, commit, commit, commit Add support for beamforming and power tracking. Power tracking can monitor the thermal value of the device and adjust corresponding power indexes, to make sure the RF output power is expected. And another thing is to add a debugfs for physical layer information commit, commit, commit, commit, commit Add support for deep PS mode commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit 8822b: add RFE type 3 support commit

sfc Add XDP support commit, commit, commit, commit, commit, commit Add statistics for ARFS commit

stmmac Enable 16KB buffer size commit Implement L3/L4 Filters in GMAC4+ commit Implement UDP Segmentation Offload commit Support enhanced addressing mode for DWMAC 4.10 commit gmac4+: Add Split Header support commit



12.6. Audio

aloop: Support sound timer as clock source instead of jiffies. This is required for forwarding audio data between a HW sound card and an aloop device without the usage of an asynchronous sample rate converter. The timer source can be initially selected by timer_source kernel module parameter commit, commit, commit, commit, commit, commit, commit

hda add Intel DSP configuration / probe code commit Add DP-MST jack support commit Add DP-MST support for non-acomp codecs commit hda - Add DP-MST support for NVIDIA codecs commit Add mute led support for HP ProBook 645 G4 commit realtek: Enable the headset-mic on a Xiaomi's laptop commit realtek: Enable internal speaker of ASUS UX431FLC commit hdmi - Add new pci ids for AMD GPU display audio commit hdmi - enable runtime pm for newer AMD display audio commit hdmi - enable automatic runtime pm for AMD HDMI codecs by default commit realtek - Enable the bass speaker of ASUS UX431FLC commit realtek - Add headset Mic no shutup for ALC283 commit realtek - Add Bass Speaker and fixed dac for bass speaker commit

Sound Open Firmware Intel: initial support to JasperLake commit acpi led support for switch controls commit acpi: add debug module param commit pci: add debug module param commit

ASoC Add ADAU7118 8 Channel PDM-to-I2S/TDM Converter driver commit Intel: boards: Add CML m/c using RT1011 and RT5682 commit adau1761: Add ALC controls commit adau1761: Add PGA Slew time control commit add tas2770 smart PA kernel driver commit cros_ec_codec: support WoV commit fsl_mqs: Add MQS component driver commit mediatek: mt6358: support WoV commit mediatek: mt8183: support WoV commit msm8916-wcd-analog: Add earpiece commit rockchip_max98090: Add HDMI jack support commit rockchip_max98090: Optionally support HDMI use case commit rt5677: Add a PCM device for streaming hotword via SPI commit samsung: arndale: Add support for WM1811 CODEC commit tas2562: Introduce the TAS2562 amplifier commit wm8994: Add support for setting MCLK clock rate commit

usb-audio: Add skip_validation module parameter; unit descriptor validation may lead to a probe error when the device provides a buggy descriptor or the validator detected incorrectly commit

firewire-motu: add support for MOTU UltraLite commit

soundwire: cadence_master: add hw_reset capability in debugfs commit

12.7. Tablets, touch screens, keyboards, mouses

Add privacy screen toggle keycode commit

Add touchscreen platform data for the Schneider SCT101CTM tablet commit

keyboard: imx_sc: Add i.MX system controller key support commit

edt-ft5x06: add support for regulator commit

ili210x: add ILI2117 support commit

st1232: switch to using MT-B protocol commit

HID Add driver for Logitech gaming keyboards (G15, G15 v2) commit Improve Windows Precision Touchpad detection commit lg-g15: Add keyboard and LCD backlight control commit lg-g15: Add support for the M1-M3 and MR LEDs commit lg-g15: Add support for the G510 keyboards' gaming keys commit lg-g15: Add support for the G510's M1-M3 and MR LEDs commit lg-g15: Add support for controlling the G510's RGB backlight commit hyperv: Add the support of hibernation commit wacom: Recognize new MobileStudio Pro PID commit multitouch: Add LG MELF0410 I2C touchscreen support commit ite: Add USB id match for Acer SW5-012 keyboard dock commit intel-ish-hid: ipc: Add Tiger Lake PCI device ID commit serial: simple: Add Motorola Solutions TETRA MTP3xxx and MTP85xx commit serial: option: add support for Quectel RM500Q in QDL mode commit serial: option: Add support for Quectel RM500Q commit qmi_wwan: Add support for Quectel RM500Q commit



12.8. TV tuners, webcams, video capturers

Implement UNIT_CELL_SIZE , a control that represents the size of a cell (pixel) commit, commit, commit, commit, commit, commit, commit, commit

HEVC/H.265 stateless support for V4L2 and Cedrus commit, commit, commit, commit, commit

ad5820: Add support for ad5821 and ad5823 commit

af9035: add support for Logilink VG0022A commit

cx88: Add support for NotOnlyTV LV3H card commit

dvbsky: add support for eyeTV Geniatech T2 lite commit

em28xx: Add support for Magix Wideowandler 2 commit

hi556: Add support for Hi-556 sensor commit

i2c: Add IMX290 CMOS image sensor driver commit

ov5640: add PIXEL_RATE control commit

rc: Add support for another iMON 0xffdc device commit

rc: add keymap for Beelink GS1 remote control commit

rc: add keymap for Tronsmart Vega S95/S96 remote commit

rcar-csi2: Enable support for R8A774B1 commit

rcar-vin: Add support for V4L2_FIELD_ALTERNATE commit

rcar-vin: Add support for outputting NV12 commit

rcar-vin: Enable support for R8A774B1 commit

saa7164: use debugfs rather than procfs for debugging file commit

smiapp: Support probing NVM size commit

sun4i: Add H3 deinterlace driver commit

ti-vpe: Add support for NV21 format commit

ti-vpe: Add support for SEQ_BT commit

vivid: Metadata support commit, commit, commit

12.9. Universal Serial Bus

Extends kcov to allow collecting coverage from backgound kernel threads commit, commit, commit

usbfs: Suppress problematic bind and unbind uevents commit

cdns3: Add TI specific wrapper driver commit

dwc3: pci: add ID for the Intel Comet Lake -H variant commit

gadget: Add UDC driver for tegra XUSB device mode controller commit

gadget: udc: renesas_usb3: add suspend event support commit

host: xhci-tegra: Add Tegra194 XHCI support commit

serial: ftdi_sio: add device IDs for U-Blox C099-F9P commit

serial: mos7840: add USB ID to support Moxa UPort 2210 commit

serial: option: add support for DW5821e with eSIM support commit

serial: option: add support for Foxconn T77W968 LTE modules commit

serial: pl2303: add support for PL2303HXN commit

typec: driver for TI HD3SS3220 USB Type-C DRP port controller commit

usb-serial: cp201x: support Mark-10 digital force gauge commit

usb251xb: Add support for USB2422 commit

usb251xb: add vdd supply support commit

serial: option: add ZLP support for 0x1bc7/0x9010 commit

serial: option: add Telit ME910G1 0x110a composition commit

12.10. Serial Peripheral Interface (SPI)

dw-pci: Add runtime power management support commit

dw: Add basic runtime PM support commit

pxa2xx: Add support for Intel Comet Lake-H commit and Intel Jasper Lake commit

12.11. Watchdog

w83627hf_wdt: Support NCT6116D commit

12.12. Serial

sprd: Add polling IO support commit

lpuart: Add RS485 support for 32-bit uart flavour commit

8250: Make Aspeed VUART SIRQ polarity configurable commit

hvc: dcc: Add earlycon support commit

12.13. CPU Frequency scaling

ti-cpufreq: Add support for omap34xx and omap36xx commit

ti-cpufreq: Add support for AM3517 commit

Add cpufreq and cci devfreq for mt8183, and SVS support

12.14. Device Voltage and Frequency Scaling

devfreq: Add dev_pm_qos notifiers to devfreq core in order to support frequency limits via dev_pm_qos_add_request commit, commit, commit, commit, commit, commit

tegra30: Support variable polling interval commit

12.15. Voltage, current regulators, power capping, power supply

power: reset: add driver for mt6323 poweroff commit

power: supply: axp20x_usb_power: enable USB BC detection on AXP813 commit

power: supply: cpcap-battery: Add basic coulomb counter calibrate support commit

test_power: Add CHARGE_COUNTER properties commit and CURRENT properties commit * regulator: ab8500: Remove AB8505 USB regulator commit

regulator: fan53555: add chip id for Silergy SYR83X commit

regulator: qcom-rpmh: add PM6150/PM6150L regulator support commit

regulator: qcom_smd: Add PM8950 regulators commit

regulator: qcom_spmi: Add PM8950 SPMI regulator commit

regulator: qcom_spmi: Add support for PM8004 regulators commit

12.16. Real Time Clock (RTC)

mt6397: add compatible for mt6323 commit

sun6i: Add support for RTC clocks on R40 commit

12.17. Pin Controllers (pinctrl)

Add pinmux & GPIO controller driver for Intel Lightning Mountain SoC commit

intel: Add Intel Tiger Lake pin controller support commit

meson: add pinctrl driver support for Meson-A1 SoC commit

qcom: Add a pinctrl driver for MSM8976 and 8956 commit

rockchip: add rk3308 SoC support commit

sh-pfc: r8a77965: Add R8A774B1 PFC support commit

sh-pfc: r8a7796: Add R8A77961 PFC support commit

12.18. Multi Media Card (MMC)

Add Actions Semi Owl SoCs SD/MMC driver commit

jz4740: Add 8bit mode support commit

jz4740: Add support for JZ4760 commit

jz4740: Add support for Low Power Mode (LPM) commit

jz4740: Add support for X1000 commit

sdhci-milbeaut: add Milbeaut SD controller driver commit

sdhci-of-arasan: Add Support for Intel LGM SDXC commit

sdhci-of-arasan: Add support for ZynqMP Platform Tap Delays Setup commit

sdhci-pci: Add support for Intel JSL commit

sdhci_am654: Add Support for Command Queuing Engine to J721E commit

12.19. Memory Technology Devices (MTD)

nand: brcmnand: Add support for flash-dma v0 commit

physmap_of: add a hook for Intel IXP4xx flash probing commit

rawnand: Add new Cadence NAND driver to MTD subsystem commit

spi-nor: Add support for is25wp256 commit

spi-nor: Add support for w25q256jw commit

spi-nor: add support for en25qh16 commit

spi-nor: intel-spi: Add support for Intel Comet Lake-H SPI serial flash commit

spi-nor: intel-spi: add support for Intel Cannon Lake SPI flash commit

12.20. Industrial I/O (iio)

Ingenic JZ47xx: Add support for JZ4770 SoC ADC commit

adc: Add driver support for AD7292 commit

adc: New driver for the AB8500 GPADC commit

adc: intel_mrfld_adc: Add Basin Cove ADC driver commit

adc: max1027: Introduce 12-bit devices support commit

cros_ec: Add cros-ec-sensorhub driver commit

dac: ad5446: Add support for new AD5600 DAC commit

dac: stm32: add power management support commit

imu: Add support for the FXOS8700 IMU commit

imu: inv_mpu6050: add MPU925x magnetometer support commit

imu: inv_mpu6050: add fifo support for magnetometer data commit

imu: mpu6050: Add support for vdd-supply regulator commit

imu: st_lsm6dsx: add odr calibration feature commit

imu: st_lsm6dsx: add support to LSM6DS0 commit

imu: st_lsm6dsx: add support to LSM6DSRX commit

light: Add support for ADUX1020 sensor commit

light: add driver for veml6030 ambient light sensor commit

temperature: Add support for LTC2983 commit

12.21. Multi Function Devices (MFD)

db8500-prcmu: Support U8420-sysclk firmware commit

intel-lpss: Add Intel Comet Lake PCH-H PCI IDs commit

madera: Add support for requesting the supply clocks commit

qcom-spmi-pmic: Add support for PM/PMI8950 commit

12.22. Pulse-Width Modulation (PWM)

stm32: Add power management support commit

12.23. Inter-Integrated Circuit (I2C + I3C)

Aspeed: Add AST2600 compatible commit

Add support for filters optional properties commit

at91: add new platform support for sam9x60 commit

at91: add support for advanced digital filtering commit

at91: add support for analog filtering commit

at91: add support for digital filtering commit

i801: Add support for Intel Comet Lake PCH-H commit

i801: Add support for Intel Jasper Lake commit

12.24. Hardware monitoring (hwmon)

Add driver for Texas Instruments TMP512/513 sensor chips commit

Add support for ltc2947 commit

dell-smm: Add support for disabling automatic BIOS fan control commit, commit

ina3221: Add summation feature support commit

pmbus: add driver for BEL PFE1100 and PFE3000 commit

12.25. General Purpose I/O (gpio)

tegra186: Implement wake event support commit

tegra186: Add debounce support commit

Add xgs-iproc driver commit

12.26. Leds

Add LED driver for EL15203000 board commit

12.27. DMA engines

JZ4780: Add support for the X1000 commit

fsl-dpaa2-qdma: Add NXP dpaa2 qDMA controller driver for Layerscape SoCs commit

fsl-dpaa2-qdma: Add the DPDMAI(Data Path DMA Interface) support commit

milbeaut-hdmac: Add HDMAC driver for Milbeaut platforms commit

milbeaut-xdmac: Add XDMAC driver for Milbeaut platforms commit

xilinx_dma: Add Xilinx AXI MCDMA Engine driver support commit

12.28. Hardware Random Number Generator (hwrng)

atmel: add new platform support for sam9x60 commit

hisi: add HiSilicon TRNG driver support commit

npcm: add NPCM RNG driver commit

12.29. Cryptography hardware acceleration

inside-secure Adds support for the (AES) CBCMAC family of authentication algorithms: AES-CBCMAC, AES-XCBCMAC and AES-MAC commit, commit, commit Add support for the Chacha20 skcipher and the Chacha20-Poly1305 AEAD suites commit, commit, commit Add support to sm3 and hmac(sm3) ahash support commit, commit, commit Add support to ecb(sm4), cbc(sm4), ofb(sm4), cfb(sm4) and rfc3686(ctr(sm4)) skcipher algorithms commit, commit, commit, commit, commit, commit, commit Add more authenc with (3)DES commit, commit, commit Add support for the rfc4106(gcm(aes)), rfc4543(gcm(aes)) and rfc4309(ccm(aes)) ciphersuites intended for IPsec ESP acceleration commit, commit, commit Add (HMAC) SHA3 support commit, commit, commit Add SM4 based authenc AEAD ciphersuites commit Add support for the EIP196 commit Added support for CRC32 commit Add support for the eip197f_iewc configuration that is currently being taped-out by a customer. It adds support for the 256 bit internal buswidth used by larger EIP197's as well as support for having less ring interrupt controllers than rings commit, commit

allwinner: Add sun8i-ce Crypto Engine commit

amlogic: Add crypto accelerator for amlogic GXL commit

ccp: add SEV command privilege separation commit

hisilicon Add HiSilicon high performance RSA engine(HPRE) driver commit, commit, commit, commit Add HiSilicon SEC V2 support commit, commit, commit, commit Let user driver to pass the configure of sge number in one sgl when creating hardware sgl resources commit Add vfs_num module param for zip commit



12.30. PCI

AER: Add PoisonTLPBlocked to Uncorrectable error counters commit

ASPM: Add sysfs attributes for controlling ASPM link states commit, commit

DPC: Add pcie_ports=dpc-native to allow DPC without AER control commit

Add pci=hpmmiosize and pci=hpmmioprefsize parameters commit

amlogic: meson: Add support for G12A commit

rpaphp: Add drc-info support for hotplug slot registration commit

vmd: Add device id for VMD device 8086:9A0B commit

12.31. Non-Transparent Bridge (NTB)

Add Hygon Device ID commit

12.32. Thunderbolt

Add Thunderbolt 3 support for the software connection manager. It is currently only used in Apple systems. Previously the driver started the firmware connection manager on those but it is not necessary anymore in this release (we still leave user an option to start the firmware in case there are problems with the software connection manager). This includes: Expose 'generation' attribute under each device in sysfs, lane bonding support, expose link speed and width in sysfs, display Port handshake needed for Titan Ridge devices, display Port pairing and resource management, and display Port bandwidth management commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

12.33. FRU Support Interface (FSI)

Add fsi-master class commit

Add ast2600 master driver commit

12.34. Clock

Add common clock driver for BM1880 SoC commit

Ingenic: Add CGU driver for X1000 commit

meson: axg_audio: add sm1 support commit

qcom: Add Global Clock controller (GCC) driver for SC7180 commit

qcom: Add MSM8998 GPU Clock Controller (GPUCC) driver commit

qcom: Add Q6SSTOP clock controller for QCS404 commit

qcom: clk-rpmh: Add support for RPMHCC for SC7180 commit

renesas: cpg-mssr: Add r8a774b1 support commit

renesas: r8a7796: Add R8A77961 CPG/MSSR support commit

tegra: Add Tegra20/30 EMC clock implementation commit

12.35. PHY ("physical layer" framework)

phy/rockchip: Add support for Innosilicon MIPI/LVDS/TTL PHY commit

Add USB2 PHY driver for Marvell MMP3 SoC commit

allwinner: add phy driver for USB3 PHY on Allwinner H6 SoC commit

qcom-qmp: Add SM8150 QMP UFS PHY support commit

tegra: xusb: Add XUSB dual mode support on Tegra210 commit

tegra: xusb: Add usb3 port fake support on Tegra210 commit

tegra: xusb: Add vbus override support on Tegra186 commit and Tegra210 commit

12.36. Various

counter: new TI eQEP driver commit

firmware: broadcom: add OP-TEE based BNXT f/w manager commit

firmware: qcom: scm: add OCMEM lock/unlock interface commit

firmware: qcom: scm: add support to restore secure config to qcm_scm-32 commit

firmware: xilinx: Add support for versal soc commit

fpga: dfl: fme: add power management support commit

fpga: dfl: fme: add thermal management support commit

habanalabs: Add a new H/W queue type commit

habanalabs: add opcode to INFO IOCTL to return clock rate commit

habanalabs: export uapi defines to user-space commit

habanalabs: expose card name in INFO IOCTL commit

interconnect: qcom: add msm8974 driver commit

iommu/ioasid: Add custom allocators commit

iommu: Add I/O ASID allocator commit

iommu: Introduce guest PASID bind function commit

iommu: arm-smmu-impl: Add sdm845 implementation hook commit

irqchip: Add support for Layerscape external interrupt lines commit

mailbox: imx: add support for imx v1 mu commit

mei: add trc detection register to sysfs commit

mei: bus: add more client attributes to sysfs commit

mei: me: add comet point V device id commit

memory: Add DMC driver for Exynos5422 commit

memory: Extend of_memory with LPDDR3 support commit

memory: tegra: Introduce Tegra30 EMC driver commit

misc: fastrpc: add mmap/unmap support commit

misc: rtsx: Add support for RTS5261 commit

nfc: pn533: Add autopoll capability commit

nfc: pn533: add UART phy driver commit

powercap/intel_rapl: add support for CometLake Mobile commit

powercap/intel_rapl: add support for Cometlake desktop commit

ptp: Add a ptp clock driver for IDT ClockMatrix commit

remoteproc: qcom_q6v5_mss: Add support for MSM8998 commit

reset: add support for the Meson-A1 SoC Reset Controller commit

reset: meson-audio-arb: add sm1 support commit

reset: uniphier-glue: Add Pro5 USB3 support commit

serdev: Add ACPI devices by ResourceSource field commit

soc/tegra: fuse: Implement nvmem device commit

soc/tegra: pmc: Add wake event support on Tegra210 commit

soc/tegra: pmc: Configure core power request polarity commit

soc/tegra: pmc: Configure deep sleep control settings commit

soc/tegra: pmc: Support wake events on more Tegra SoCs commit

soc/tegra: regulators: Add regulators coupler for Tegra20 commit

soc/tegra: regulators: Add regulators coupler for Tegra30 commit

soc: at91: Add Atmel SFR SN (Serial Number) support commit

soc: fsl: add RCPM driver commit

soc: qcom: add OCMEM driver commit

soc: qcom: socinfo: add sdm845 and sda845 soc ids commit

soc: renesas: Identify RZ/G2N commit

soc: renesas: rcar-rst: Add support for RZ/G2N commit

soc: renesas: rcar-sysc: Add R8A77961 support commit

soc: renesas: rcar-sysc: Add r8a774b1 support commit

soc: samsung: Add Exynos Adaptive Supply Voltage driver commit

soc: ti: add initial PRM driver with reset control support commit

w1: new driver. DS2430 chip commit

13. List of Pull Requests

14. Other news sites