KernelNewbies:

Changes done in each Linux kernel release. Other places to get news about the Linux kernel are LWN kernel status, H-Online, or the Linux Kernel mailing list (there is a web interface in www.lkml.org). List of changes of older releases can be found at LinuxVersions. If you're going to add something here look first at LinuxChangesRules!

You can discuss the latest Linux kernel changes on the New Linux Kernel Features Forum.

Linux 5.4 was released on 24 November 2019.

Summary: This release includes the kernel lockdown mode, intended to strengthen the boundary between UID 0 and the kernel; virtio-fs, a high-performance virtio driver which allows a virtualized guest to mount a directory that has been exported on the host; fs-verity, for detecting file tampering, like dm-verity, but works on files rather than block devices; dm-clone, which allows live cloning of dm targets; two new madvise() flags for improved app memory management on Android, support for new Intel/AMD GPUs, support for the exfat file system and removing the experimental status of the EROFS file system; a new haltpoll cpuidle driver and governor that greatly improves performance for virtualized guests wanting to do guest-side polling in the idle loop; and blk-iocost, a I/O cgroup controller that attempts to calculate the cost of I/O more accurately. As always, there are many other new drivers and improvements.

Contents

  1. Coolest features
    1. Kernel lockdown mode
    2. virtio-fs, a bridge to share file systems with virtualized guests
    3. fs-verity, for detecting file modifications
    4. dm-clone
    5. Support for new AMD/Intel graphics
    6. Two new madvise() flags: MADV_COLD and MADV_PAGEOUT
    7. EROFS and exFAT
    8. More efficient polling in virtualized guests with haltpoll
    9. More accurate cgroup I/O control with blk-iocost
    10. Kernel symbol namespacing
  2. Core (various)
  3. File systems
  4. Memory management
  5. Block layer
  6. Tracing, perf and BPF
  7. Virtualization
  8. Cryptography
  9. Security
  10. Power Management
  11. Networking
  12. Architectures
    1. ARM
    2. PowerPC
    3. x86
    4. S390
    5. MIPS
    6. RISC-V
    7. User Mode Linux
    8. PA-RISC
    9. IA-64
    10. Xtensa
    11. MicroBlaze
    12. ARC
  13. Drivers
    1. Graphics
    2. Storage
    3. Drivers in the Staging area
    4. Networking
    5. Audio
    6. Tablets, touch screens, keyboards, mouses
    7. TV tuners, webcams, video capturers
    8. Universal Serial Bus
    9. Serial Peripheral Interface (SPI)
    10. Watchdog
    11. Serial
    12. CPU Frequency Scaling
    13. Device Voltage and Frequency Scaling
    14. Real Time Clock (RTC)
    15. Voltage, current regulators, power capping, power supply
    16. Pin Controllers (pinctrl)
    17. Multi Media Card (MMC)
    18. Memory Technology Devices (MTD)
    19. Industrial I/O (iio)
    20. Multi Function Devices (MFD)
    21. Pulse-Width Modulation (PWM)
    22. Inter-Integrated Circuit (I2C + I3C)
    23. Hardware monitoring (hwmon)
    24. General Purpose I/O (gpio)
    25. LEDs
    26. DMA engines
    27. Cryptography hardware acceleration
    28. PCI
    29. Non-Transparent Bridge (NTB)
    30. Thunderbolt
    31. Clock
    32. PHY ("physical layer" framework)
    33. EDAC (Error Detection And Correction)
    34. Various
  14. List of Pull Requests
  15. Other news sites

1. Coolest features

1.1. Kernel lockdown mode

This release introduces an optional kernel lockdown feature, intended to strengthen the boundary between UID 0 (root) and the kernel. When enabled, various pieces of kernel functionality are restricted. Applications that rely on low-level access to either hardware or the kernel may cease working as a result - therefore this should not be enabled without appropriate evaluation beforehand. The original purpose of this feature was to honour the anti-tampering protections expected in a secure-boot environment, but it is not tied to that. The majority of mainstream distributions have been carrying variants of this patchset for many years now.

Kernel lockdown is implemented as a Linux Security Module that can be configured in integrity or lockdown mode. If set to integrity, kernel features that allow userland to modify the running kernel are disabled. If set to confidentiality, kernel features that allow userland to extract confidential information from the kernel are also disabled. Configuration can be done at runtime (through securityfs), boot time (via a kernel parameter) or build time (via a kconfig option).

Recommended LWN article: Lockdown as a security module

1.2. virtio-fs, a bridge to share file systems with virtualized guests

This release includes virtio-fs, a FUSE-based virtio driver for guest <-> host file system sharing. It allows a guest to mount a directory that has been exported on the host. Although there are existing technologies that allow this kind of functionality (NFS, virtio-9P), virtio-fs takes advantage of the proximity of VMs to achieve API semantics and performance more like local file systems. This is desirable both for performance and for application compatibility.

For more details, see the documentation, the design documentation and the official web site

1.3. fs-verity, for detecting file modifications

fs-verity is a support layer that filesystems can use to support transparent integrity and authenticity protection of read-only files. It is similar to dm-verity but works on files rather than block devices. Currently, it is supported by the ext4 and f2fs filesystems.

On regular files on filesystems supporting fs-verity, userspace can execute an ioctl that causes the filesystem to build a Merkle tree for the file and persist it to a filesystem-specific location associated with the file. Optionally, it is possible sign files with a key loaded into a keyring. After this, the file is made readonly, and all reads from the file are automatically verified against the file's Merkle tree. Reads of any corrupted data, including mmap reads, will fail. Userspace can efficently retrieve the root hash ("file measurement") with another ioctl, which can be used for a variety of security applications.

For more details, read the documentation

Recommended LWN article: Yet another try for fs-verity

1.4. dm-clone

dm-clone is a device mapper target which produces a one-to-one copy of an existing, read-only source device into a writable destination device: It presents a virtual block device which makes all data appear immediately, and redirects reads and writes accordingly. The main use case of dm-clone is to clone a potentially remote, high-latency, read-only, archival-type block device into a writable, fast, primary-type device for fast, low-latency I/O. The cloned device is visible/mountable immediately and the copy of the source device to the destination device happens in the background, in parallel with user I/O.

For more details, see the documentation

1.5. Support for new AMD/Intel graphics

This release adds support in the amdgpu driver for four new amdgpu products: Navi 12/14, Arcturus and Renoir APU support.

It also includes the first pieces for supporting the future Intel Tiger Lake GPU.

1.6. Two new madvise() flags: MADV_COLD and MADV_PAGEOUT

In order to improve memory usage in some systems (notably, Android), two new madvise() flags have been added: MADV_COLD and MADV_PAGEOUT. These new options complement MADV_DONTNEED and MADV_FREE by adding non-destructive ways to gain some free memory space.

MADV_COLD hints the kernel that the pages can be reclaimed when memory pressure happens but data should be preserved for future use, this can reduce workingset eviction so it ends up increasing performance. In contrast to MADV_FREE, the contents of the region are preserved regardless of subsequent writes to pages. MADV_PAGEOUT can be used by a process to mark a memory range as not expected to be used for a long time so that kernel reclaims *any LRU* pages instantly. The hint can help kernel in deciding which pages to evict proactively. Access in the range after successful operation could cause major page fault but never lose the up-to-date contents unlike MADV_DONTNEED

1.7. EROFS and exFAT

This release moves the EROFS file system out of the staging area. First included in Linux 4.19, EROFS is a lightweight read-only file system with a modern design aimed for scenarios which need high-performance read-only requirements, e.g. firmware in mobile phone or Livecds. Recommended LWN article: On-disk format robustness requirements for new filesystems

This release also adds the exFAT file system to the staging area. Recommended LWN article: Examining exFAT

1.8. More efficient polling in virtualized guests with haltpoll

This release includes a haltpoll cpuidle driver and a new matching governor. These two pieces allows guest vcpus to poll for a specified amount of time before halting, which provides the following benefits to host side polling: 1) The POLL flag is set while polling is performed, which allows a remote vCPU to avoid sending an IPI (and the associated cost of handling the IPI) when performing a wakeup. 2) The VM-exit cost can be avoided. The downside of guest side polling is that polling is performed even with other runnable tasks in the host. For more details see the documentation

1.9. More accurate cgroup I/O control with blk-iocost

One challenge of controlling I/O resources is the lack of reliability of trivial cost metrics. Bandwidth and iops can be off by orders of magnitude depending on the device type and I/O pattern. This is challenging for the I/O cgroup controllers: while io.latency provides the capability to comprehensively prioritize and protect IOs depending on the cgroups, its protection is binary - the lowest latency target cgroup is protected at the cost of all others.

This release introduces blk-iocost, an I/O cost model based work-conserving proportional controller. It currently has a simple linear cost model builtin where each I/O is classified as sequential or random and given a base cost accordingly and additional size-proportional cost is added on top. Each I/O is given a fairly reliable cost, and distributes I/O capacity for each cgroup according to their hierarchical weight. For more details, see the cgroup documentation for io.cost.qos and io.cost.model

Recommended LWN article: The io.weight I/O-bandwidth controller (the io.weight name is no longer used)

1.10. Kernel symbol namespacing

In order to support modules, the kernel needs to export the symbols of functions needed by modules. With more than 30k of those symbols existing in the current kernel, managing the symbols is sometimes messy. This feature allows allows subsystem maintainers to partition and categorize their exported symbols into explicit namespaces, which makes easier to control the use of symbols. Module authors are now required to import the namespaces they need.

For more details, read the documentation

Recommended LWN article: Kernel symbol namespacing

2. Core (various)

  • (FEATURED) fs-verity: read-only file-based authenticity protection. fs-verity is similar to dm-verity, but implemented on a per-file basis: a Merkle tree is used to measure (hash) a read-only file's data as it is paged in. In general, fs-verity is intended for use on writable filesystems; dm-verity is still recommended on read-only ones. Support is added for Ext4 and F2FS file systems commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

  • fscrypt: Makes major improvements to how keys are added, removed, and derived in fscrypt, aka ext4/f2fs/ubifs encryption. It does this by adding new ioctls that add and remove encryption keys directly to/from the filesystem, and by adding a new encryption policy version ("v2") where the user-provided keys are only used as input to HKDF-SHA512 and are identified by their cryptographic hash commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

  • Task scheduler

    • topology: Improve load balancing on AMD EPYC systems commit

    • Extend the CPU cgroup controller with uclamp.min and uclamp.max to allow the finer shaping of CPU bandwidth usage commit, commit, commit, commit, commit, commit

    • Speed-up energy-aware wake-ups from O(CPUS^2) to O(CPUS) commit

    • Improve the behavior of high CPU count, high thread count applications running under cpu.cfs_quota_us constraints commit

    • Improve balancing with SCHED_IDLE (SCHED_BATCH) tasks present commit

    • Improve CPU isolation housekeeping CPU allocation NUMA locality commit

    • Convert the cpuset_mutex to percpu_rwsem, to allow it to be used from setscheduler() system calls without creating global serialization commit

  • io_uring

    • IORING_OP_TIMEOUT support, a functionality similar to io_getevents() and epoll_wait(), where the user can specify a timeout for waiting on events commit

    • Improvement to the io_uring CQ ring wakeup for batched IO commit

    • Allocate SQ/CQ ring together, more efficient. Expose this through a feature flag as well, so we can reduce the number of mmaps by 1 commit, commit

    • Support SQ poll wakeup + event get in single io_uring_enter commit

    • Add support for links with drain commands commit

    • Increase IORING_MAX_ENTRIES from 4K to 32K commit

    • Limit parallelism of buffered writes commit

  • waitid() system call

    • Add P_PIDFD flag, which adds the ability to wait on processes using pidfds. This is one of the few missing pieces to make it possible to manage processes using only pidfds commit

  • Add support for waiting for the current process group commit

  • Symbol Namespaces. It adds namespacing to the symbols used by kernel modules. This feature allows subsystem maintainers to partition their exported symbols into separate namespaces, limit availability of these namespaced symbols to other parts of the kernel. For more details read the documentation. commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

  • VFS: adds a per-superblock minimum/maximum timestamp limit for a file system, and clamps timestamps as they are written, to avoid random behavior from integer overflow as well as having different time stamps on disk vs in memory. This helps futimens(), utimensat() and utimes() syscalls to conform to POSIX defined behavior when the time being set is outside of the corresponding filesystem's supported limits commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

  • Preparations for PREEMPT_RT

  • Add binder state and statistics to binderfs commit, commit, commit, commit

  • kexec: add generic support for elf kernel images commit, commit, commit, commit, commit, commit, commit

  • Update the interrupt spreading code so it handles numa node with different CPU counts properly commit, commit

  • RCU

  • Improve rwsem scalability commit

  • lockdep: Report more stack trace statistics commit

  • Prohibit writing to active swap files and swap partitions commit, commit

  • lkdtm: Add Control Flow Integrity test commit

  • kbuild: remove SUBDIRS support commit

3. File systems

  • XFS

    • Speed up large directory modifications. It makes growing large directories much faster by avoiding unnecessary processing during free space searches commit, commit, commit, commit, commit

  • F2FS
  • CIFS

    • Introduces a new kernel command-line option called cifsroot= which will tell the kernel to mount the root file system over the network by utilizing SMB or CIFS protocol commit

    • Add support to send smb2 set-info commands from userspace commit

    • Allow chmod to set mode bits using special sid commit, commit

    • Add cache=singleclient mount option to allow shares accessed by only client to be more aggressively cached commit

    • Allow share to be mounted with cache=ro if immutable share commit

    • Add ioctl to dump decryption keys for debugging commit

    • Allow disabling requesting leases commit

    • Allow parallelizing decryption of reads commit

    • Allow skipping signature verification for perf sensitive configurations commit

    • Display max smb3 requests in flight at any one time commit

    • Enable offload of decryption of large reads via mount option commit

  • ext4

    • Add ioctl EXT4_IOC_CLEAR_ES_CACHE to force an inode's extent status cache to be cleared out, intended for debugging commit

    • Add ioctl EXT4_IOC_GETSTATE, it returns some of the dynamic state of an ext4 inode, intended for debugging commit

    • Add ioctl EXT4_IOC_GET_ES_CACHE, it returns the contents of the extent. Intended for debugging commit

  • AFS

    • afs: Support RCU pathwalk commit

  • Ceph

    • Allow arbitrary security.* xattrs commit

    • Automatic recovery of a blacklisted filesystem session. This is disabled by default and can be enabled by mounting with the recover_session=clean boot option commit, commit, commit, commit, commit, commit, commit, commit, commit

    • Allow copy_file_range() within the same inode and across different filesystems within the same cluster commit

  • Btrfs
  • NFS
  • UDF

    • Support 2048-byte spacing of VRS descriptors on 4K media commit

4. Memory management

  • (FEATURED) Introduce madvise() flags MADV_COLD, which marks pages as inactive (thus more easily reclaimed under memory pressure), but doesn't discard the contents like MADV_FREE does, and MADV_PAGEOUT, which reclaims pages immediately, but doesn't discard the contents like MADV_DONTNEED does. commit, commit, commit, commit

  • Memory control group

    • Extend the shrink file to shrink all memcg caches for the slab cache. Before the commit, writing 1 to /sys/kernel/slab/<slab>/shrink was shrinking only the root cache. With SLUB_MEMCG_SYSFS_ON enabled and slub_memcg_sysfs=1 used, it was possible to shrink also memcg caches, but it was impractical. Now all memcg caches will be shrunk when writing to the "global" shrink file. commit

    • Throttle allocators when reclaim cannot keep up with v2 memory.high limit commit

    • Introduce gradual reclaim pressure between v2 memory.low and memory.min thresholds instead of the previous cliff behaviour. commit, commit, commit

    • Improve situation with multiple parallel reclaimers by letting each walk through the whole cgroup tree, resulting in fewer premature OOM kills. commit

    • Deprecate v1 kmem.limit_in_bytes due to causing unexpected ENOMEM failures and global OOM's. commit

    • Prevent premature OOM's due to deferred Transparent Huge Page split queue. commit, commit, commit, commit

    • Implement foreign inode flushing to avoid pathological cases when two different cgroups are writing to the same inode commit, commit, commit, commit, commit

  • Experimentally enable Transparent Huge Page support for text section (executable code) of non-shmem files (CONFIG_READ_ONLY_THP_FOR_FS) commit, commit, commit, commit, commit, commit, commit

  • Change the handling of Transparent Huge Page faults so that they are tried first on a local NUMA node with no memory reclaim allowed, and if they not succeed, for madvise(MADV_HUGEPAGE) areas retry on all nodes, allowing reclaim. This should prevent swap storms observed on pre-5.3 kernels with some workloads and also fix the reported regression for a different workload on 5.3 kernel. LWN merge, commit, commit commit commit, commit

  • Make uprobes uprobe Transparent Huge Page-aware. Instead of splitting whole THP when installing uprobe, split only the huge PMD, and reinstate it after uprobes are removed. commit commit, commit, commit, commit, commit

  • kmemleak: make it more robust during early allocations (before slab subsystem is initialized) by using a single memory pool commit, commit, commit, commit, commit, commit,

  • KASAN: for software tag-based mode, enhance the memory corruption report with a guess whether it is "use-after-free" or "out-of-bound" error instead of "invalid-access" error. commit

  • page_owner: store also the stack of who last freed the page and print it in dump_page() to improve debugging double free or use-after-free, especially when debug_pagealloc or KASAN are also enabled commit, commit, commit, commit, commit commit

  • oom: add task UID, oom_score_adj and pgtables to OOM message commit, commit

  • Provide a generic top-down mmap layout implementation commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

  • zswap: let zswap use movable memory with zsmalloc commit, commit

  • Guarantee alignment to size for kmalloc() allocations of power-of-two size, regardless of used sla*b allocator and activated debugging functions. Recommended LWN article LWN followup. commit, commit

  • Fix minutes or hours long stalls when setting nr_hugepages to too high values. commit, commit, commit, commit,

5. Block layer

  • (FEATURED) Support for blk-iocost, a IO cgroup controller that uses a model that can properly account cost of IO workloads commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

  • bfq: add to BFQ the missing per-device weight interfaces: blkio.bfq.weight_device on legacy and io.bfq.weight on cgroups v2 commit, commit, commit

  • Introduce a new request operation REQ_OP_ZONE_RESET_ALL that reset all zones. This is useful for the applications like mkfs commit, commit, commit, commit

  • Device Mapper (dm)

    • (FEATURED) Add dm-clone target, which allows cloning of arbitrary block devices commit

    • writecache: Optimize writecache writeback for performance commit, commit, commit

    • dm verity: add root hash pkcs#7 signature verification. The verification is to support cases where the root hash is not secured by Trusted Boot, UEFI Secureboot or similar technologies commit

    • Introduce DM_GET_TARGET_VERSION. It will load a target that is specified in the "name" entry in the parameter structure and return its version. commit

  • md/raid0: Add module and feature flag to avoid RAID0 data corruption due to layout confusion commit, commit

  • md: allow last device in RAID1/RAID10 to fail and be removed commit, commit, commit

  • Remove now unused elevator boot argument commit

6. Tracing, perf and BPF

7. Virtualization

  • (FEATURED) Add virtio-fs commit, commit

  • vfio/type1: Introduce an iova list associated with a vfio iommu. User-space can retrieve valid iova ranges using VFIO_IOMMU_GET_INFO ioctl capability chains commit, commit, commit, commit, commit, commit

8. Cryptography

  • CAESAR competition followup: remove aegis128l, aegis256 and morus, add better support for aegis128 commit, commit, commit, commit, commit, commit, commit, commit

  • Create an ESSIV template that produces a skcipher or AEAD transform based on a tuple of the form '<skcipher>,<shash>' (or '<aead>,<shash>' for the AEAD case). It exposes the encapsulated sync or async skcipher/aead by passing through all operations, while using the cipher/shash pair to transform the input IV into an ESSIV output IV

  • essiv - create wrapper template for ESSIV generation commit, commit, commit, commit, commit, commit

  • Make NETLINK_CRYPTO work inside netns commit

  • xts: add support for ciphertext stealing commit

9. Security

10. Power Management

  • Expose suspend stats in sysfs commit

  • Show wakeup sources stats in sysfs under /sys/class/wakeup/wakeup<ID>/ commit

  • (FEATURED) Introduce a new haltpoll cpuidle driver and a new matching governor for virtualized guests wanting to do guest-side polling in the idle loop commit, commit, commit, commit, commit, commit, commit, commit, commit, commit,

  • EFI: Export Runtime Configuration Interface table to sysfs commit

  • ACPI

    • PPTT: Add support for ACPI 6.3 thread flag commit

    • s2idle: Add acpi.sleep_no_lps0 module parameter to prevent the ACPI LPS0 _DSM functions from being invoked commit

  • pm-graph v5.5 commit

11. Networking

  • Increase SOMAXCONN (/proc/sys/net/core/somaxconn) from 128 to 4096 commit

  • TCP

    • Increase tcp_max_syn_backlog default to 4096 to match the recent SOMAXCONN change commit

    • Add a TCP_INFO counter that tracks out-of-order packet reception. It will allow understanding to what degree receive-heavy sockets are experiencing out-of-order delivery and packet drops indicating congestion. Please note that this is similar to the counter in NetBSD TCP_INFO, and has the same name commit

    • Add a TCP_INFO counter that tracks peer's advertised receive window after scaling commit

    • Add new tcp_mtu_probe_floor sysctl. The current implementation of TCP MTU probing can considerably underestimate the MTU on lossy connections. This sysctl allows to set a larger floor commit

  • IPv4/6: support setting SO_MARK for UDP and RAW sockets using cmsg. This is analogous to existing support for TOS, TTL, txtime, etc. commit

  • IPv6: add support for RFC7710 RA Captive Portal Identifier commit

  • Netfilter

    • Support for updating stateful objects, this also includes the initial client for this infrastructure: the quota extension commit, commit

    • nft_synproxy: add synproxy stateful object support commit

    • Add offload support the vlan and tunnel device offload through indr-block architecture commit, commit, commit, commit, commit, commit

    • nfnetlink_log: add support for VLAN information commit

    • Add offload support for bitwise operation commit

    • nft_dynset: implements the delete operation from the ruleset commit

    • Introduce meta matches in the kernel for time, day, and hour commit

    • Support for fwd and dup offload commit

  • Wireless

  • Add drop packet monitor for offloaded data paths commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

  • bridge: makes the bridge dump host-joined mdb entries, they should be treated as normal entries since they take a slot and are aging out commit, commit, commit, commit

  • devlink: send notifications for deleted snapshots on region destroy commit

  • dsa: ksz: Add KSZ8795 tag code commit

  • ethtool: implement Energy Detect Powerdown support via phy-tunable commit

  • packet scheduler

    • fq_codel: Two small fq_codel optimizations commit, commit

    • act_police: add 2 new attributes to support police 64bit rate and peakrate commit

  • Bluetooth

    • Add support for utilizing Fast Advertising Interval commit

  • Infiniband/RDMA

    • iser: Support up to 16MB data transfer in a single command commit

    • Add a counter for credit waits to assist field debugging commit

    • Add common iWARP query port commit

    • Support netlink commands in non init_net net namespaces commit

    • Expose device statistics commit

  • can

  • batman-adv: Add OGMv2 per-interface queue and aggregations commit, commit

  • ncsi: Disable global multicast filter commit

  • RDS: Add RDS6_INFO_SOCKETS and RDS6_INFO_RECV_MESSAGES options commit

  • SCTP: support per endpoint auth and asconf flags commit, commit, commit, commit, commit, commit, commit, commit

  • TIPC: Add loopback device tracking commit

  • devmap: adds a new map type, devmap_hash, that works like the existing devmap type, but using a hash-based indexing scheme. This is useful for the use case where a devmap is indexed by ifindex (for instance for use with the routing table lookup helper) commit, commit, commit, commit, commit, commit

12. Architectures

12.1. ARM

  • SoC changes

    • Support for the new ASpeed AST2600 gets added, this is based on the Cortex-A7 ARMv7 core, and is a newer version of the existing ARMv5 and ARMv6 chips in the same family commit

    • TI Davinci and NXP LPC32xx platforms have been converted to the ARCH_MULTIPLATFORM build, meaning that it is possible to compile a kernel that works on these along with most other ARMv5 platforms commit, commit

    • The Kendin/Micrel/Microchip KS8695, Winbond/Nuvoton W90x900 and Intel IOP33x/IOP13xx platforms are removed after it was determined that nobody is using them any more commit, commit, commit

  • Device Tree changes

    • The Snapdragon 855 (SM8150) is Qualcomm's current high-end phone platform, usually paired with an external 5G modem. So far we only support the Qualcomm SM8150 MTP reference platform, but no actual products commit, commit, commit, commit, commit

    • For the slightly older Qualcomm platforms, support for several interesting products is getting added: Three laptops based on Snapdragon 835/MSM8998 (Asus NovaGo TP370QL commit, HP Envy X2 commit and Lenovo Miix 630 commit), one laptop based on Snapdragon 850/sdm850 (Lenovo Yoga C630 commit) and several phones based on the older Snapdragon 410/MSM8916 (Samsung Galaxy A3 and A5 commit, Longcheer L8150 aka Android One 2nd gen "seed" aka Wileyfox Swift commit)

    • Mediatek MT7629 is a new wireless network router chip, similar to the older MT7623. It gets added together with the reference board implementation commit

    • Allwinner V3 is a repackaged version of the existing low-end V3s chip, and is used in the tiny Lichee Pi Zero plus, also added here commit. There is also a new TV set-top box based on Allwinner H6, the Tanix TX6 commit, and the eMMC variant of the Olimex A64-Olinuxino development board commit

    • NXP i.MX8M Nano is a new member of the ever-expanding i.MX SoC family, similar to the i.MX8M Mini commit, commit. As usual, there is a large number of new boards for i.MX SoCs: !Einfochips i.MX8QXP AI_ML commit, SolidRun Hummingboard Pulse baseboard and System-on-Module commit, Boundary Devices i.MX8MQ Nitrogen8M commit, and TechNexion PICO-PI-IMX8M-DEV for the 64-bit i.MX8 line commit. For 32-bit, we get the Kontron i.MX6UL N6310 SoM commit with two baseboards, the PHYTEC phyBOARD-Segin SoM with three baseboards commit, and the Zodiac Inflight Innovations i.MX7 RMU2 board commit

    • In a different NXP product line, the Layerscape LS1046A "Freeway" reference board gets added commit

    • Amlogic SM1 (S905X3) and G12B (S922X, A311D) are updated chips from their set-top-box line and smart speaker with newer CPU and GPU cores compared to their predecessors. Both are now also supported by the Khadas VIM3 development board series commit and VIM3L commit. Another board based on SM1 that gets added is the SEI Robotics SEI610 commit

    • There are a handful of new x86 and Power9 server boards using Aspeed BMC chips that are gaining support for running Linux on the BMC through the OpenBMC project: Facebook Minipack commit, Wedge100 commit, Wedge40 commit, Lenovo Hr855xg2 commit, and Mihawk commit.

    • There are three new end-user products using 32-bit Rockchips SoCs: Mecer Xtreme Mini S6 is an Android "mini PC" box based on the low-end RK3229 chip commit, while the two AOpen products Chromebox Mini (Fievel commit) and Chromebase Mini (Tiger commit) run ChromeOS and are meant for commercial settings(digital signage, PoS, ...).

    • One more single-board computer based on the popular 64-bit RK3399 is added: the Leez RK3399 P710 commit

    • The new Aspeed AST2600 baseboard management controller is added, this is a Cortex-A7 based follow-up to the ARM11 based AST2500 commit

    • After many years, support for the MMP2 based OLPC XO-1.75 finally makes it into the kernel commit

    • The Armada 3720 based Turris Mox open source router platform commit

    • rockchip: remove rk3288 fennec board support commit

  • UNWINDER_FRAME_POINTER implementation for Clang commit

  • debug-ll: Add support for r7s9210 commit

  • psci: cpuidle: Introduce PSCI CPUidle driver commit

  • coresight: acpi: Static funnel support commit

  • coresight: cpu-debug: Add support for Qualcomm Kryo commit

  • perf: Add PMU event JSON files for ARM Cortex-A76 and, Neoverse N1 commit

  • crypto

    • aes-ce: implement ciphertext stealing for CBC commit

    • aes-ce: implement ciphertext stealing for XTS commit

    • aes-ce: provide a synchronous version of ctr(aes) commit

    • aes-neonbs: implement ciphertext stealing for XTS commit

    • aes-neonbs: provide a synchronous version of ctr(aes) commit

    • ghash: provide a synchronous version commit

  • ARM64

12.2. PowerPC

12.3. x86

  • Add UMIP emulation/spoofing for 64-bit processes as well, because of Wine based gaming commit

  • Enable a new AVX512 CPU instruction group/feature for enumeration in /proc/cpuinfo: AVX512_VP2INTERSECT commit

  • Add Elkhart Lake, Tiger Lake and Airmont to Intel family commit, commit, commit

  • amd_nb: Add PCI device IDs for family 17h, model 70h commit

  • Disable Transactional Synchronization Extensions (TSX), as it may be used on certain processors as part of a speculative side channel attack commit, commit, commit, commit, commit, commit, commit, commit, commit

  • Mitigation for CVE-2018-12207, a microarchitectural implementation issue that could allow an unprivileged local attacker to cause system wide denial-of-service condition commit, commit, commit, commit, commit, commit, commit

    • Remove MPX APIs commit

    • Remove X86_FEATURE_MFENCE_RDTSC commit

    • platform

      • chrome: cros_ec_chardev: Add a poll handler to receive MKBP events commit

      • asus-wmi: Add support for charge threshold commit

      • hp_accel: Add support for HP ZBook 17 G5 commit

      • thinkpad_acpi: Add ThinkPad PrivacyGuard commit

      • asus-nb-wmi: Support ALS on the Zenbook UX430UNR commit

      • touchscreen_dmi: Add info for the Irbis TW90 tablet commit

      • touchscreen_dmi: Add info for the Chuwi Surbook Mini tablet commit

      • touchscreen_dmi: Add info for the Trekstor Primebook C11B 2-in-1 commit

      • pmc_atom: Add Siemens SIMATIC IPC227E to critclk_systems DMI table commit

    • crypto

      • aes: drop scalar assembler implementations commit

      • xts: implement support for ciphertext stealing commit

    • hwtracing intel_th

      • msu-sink: An example msu buffer "sink" commit

      • msu: Introduce buffer interface commit

      • pci: Add Comet Lake PCH support commit

      • pci: Add Jasper Lake PCH support commit

    • perf

      • Add Comet Lake CPU support commit, commit, commit

      • Add Tiger Lake CPU support commit, commit, commit

      • msr: Add new CPU model numbers for Ice Lake commit, commit

      • vendor events amd: Add L3 cache events for Family 17h commit

      • vendor events intel: Add Icelake V1.00 event file commit an

      • vendor events intel: Add Tremontx event file v1.02 commit

      • vendor events: Remove P8 HW events which are not supported commit

    • KVM

      • Hyper-V: Add direct tlb flush support commit, commit

      • vmx: Emulate MSR IA32_UMWAIT_CONTROL commit

      • Add support for user wait instructions commit

    • vmware: Support for VMCALL/VMMCALL based hypercalls commit

12.4. S390

  • Add support for IBM z15 machines commit

  • crypto: Add SHA3 and CCA AES cipher key support in zcrypt commit, commit

  • crypto: Add sysfs attributes to emit AES CIPHER key blobs commit

  • zcrypt: CEX7S exploitation support commit

  • zcrypt: new sysfs attributes serialnr and mkvps commit

  • bpf: add JIT support for bpf line info commit and for multi-function programs commit

  • perf cpum_sf: Support ioctl PERF_EVENT_IOC_PERIOD commit

  • kasan: add kdump support commit

  • qdio: enable drivers to poll for Output completions commit

  • qdio: let drivers opt-out from Output Queue scanning commit

  • qeth: add BQL support for IQD devices commit

  • qeth: add TX NAPI support for IQD devices commit

  • qeth: add xmit_more support for IQD devices commit

  • qeth: collect accurate TX statistics commit

12.5. MIPS

  • Add partial 32-bit huge page support commit

  • BCM47XX: Add support for Netgear R6200 V1 commit

  • Remove unused R4300 CPU support commit

  • Remove unused R5432 CPU support commit

  • Remove unused R8000 CPU support commit

  • jz4740: Drop dead code commit

12.6. RISC-V

12.7. User Mode Linux

  • Add virtio vhost-user driver commit

  • Added support for Unix socket transports and bess transport commit

  • Add legacy tap support and rename existing vector to hybrid commit

12.8. PA-RISC

  • Add assembly implementations for memset, strlen, strcpy, strncpy and strcat commit

  • Add kexec support commit, commit

  • Add kprobes on ftrace support commit

12.9. IA-64

  • Remove the hpsim platform commit

  • Remove the SGI UV simulator support commit

  • Remove support for the SGI SN2 platform commit

12.10. Xtensa

  • Add support for xtensa call0 ABI in userspace commit

12.11. MicroBlaze

  • Use the generic DMA coherent remap allocator commit

12.12. ARC

13. Drivers

13.1. Graphics

  • Add the content_type support for HDCP2.2. Along with that uevent is sent for each HDCP state change triggered within kernel commit, commit, commit, commit, commit, commit

  • AMDGPU

    • (FEATURED) Navi12/14 support, arcturus and renoir APU support, Navi12 + Arcturus power features merge, merge, commit, commit

    • Add wipe memory on release flag for buffer creation commit, commit, commit

    • RAS support for GFX merge

  • i915
  • nouveau

    • Improved display color management commit, commit

    • gv100-: add support for plane zpos property commit

  • vmwgfx

    • Evicition priority support commit

  • msm

    • msm8998 display support commit

    • Better async commit support for cursor updates commit, commit

    • Add rotation property commit

  • Etnaviv

    • Implement per-process address spaces on MMUv2 commit

    • Implement softpin commit

  • komeda

    • Enable dual-link support commit

  • imx

    • imx-ldb: Provide ddc symlink in connector's sysfs commit

    • imx-tve: Provide ddc symlink in connector's sysfs commit

  • ingenic

    • Add support for Sharp panels commit

    • Add support for panels with 8-bit serial bus commit

  • panfrost

    • Export GPU features register to userspace commit

    • * Allow userspace to mark BOs which can be freed when there is memory pressure commit, commit, commit

    • Per-fd address space support commit

  • pl111
  • sun4i

    • Improve support for color encoding and range commit

    • Provide ddc symlink in sun4i hdmi connector sysfs directory commit

  • omap

    • Add 'alpha' and 'pixel blend mode' plane properties commit

  • panel

    • Add Novatek NT39016 panel support commit

    • Add driver for the LG Philips LB035Q02 panel commit

    • Add driver for the NEC NL8048HL11 panel commit

    • Add driver for the Sharp LS037V7DW01 panel commit

    • Add driver for the Sony ACX565AKM panel commit

    • Add driver for the Toppoly TD028TTEC1 panel commit

    • Add driver for the Toppoly TD043MTEA1 panel commit

    • Add support for Raydium RM67191 panel driver commit

    • jh057n00900: Add regulator support commit

    • simple: Add GiantPlus GPM940B0 panel support commit, commit

    • simple: Add Ortustech COM37H3M panel support commit

    • simple: Add Sharp LQ070Y3DG3B panel support commit

    • simple: Add Sharp LS020B1DD01D panel support commit

    • simple: Add support for Sharp LD-D5116Z01B panel commit

    • simple: Support TI nspire panels commit

  • ast

    • Provide ddc symlink in connector sysfs directory commit

  • bridge

    • ti-sn65dsi86: add debugfs commit

  • Associate ddc adapters with connectors: It is difficult for a user to know which of the i2c adapters is for which drm connector. This change adds a symbolic link in connector's sysfs directory commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

  • gm12u320:

    • Add Grain Media GM12U320 driver v2 commit

  • ipu-v3

  • agp: remove the sgi-agp driver commit

  • fbdev: remove w90x900/nuc900 platform drivers commit

  • fbdev: Drop JZ4740 driver commit

13.2. Storage

  • libnvdimm: Introduce a new sysfs 'frozen' attribute so that ndctl can reflect the "security-operations-allowed" state independently of the lock status commit

  • SCSI

    • Add support for request batching commit, commit

    • hisi_sas: Add built-int self test support for phy loopback commit

    • hisi_sas: Snapshot AXI and RAS register at debugfs commit and snapshot HW cache of IOST and ITCT at debugfs commit

    • lpfc: Add MDS driver loopback diagnostics support commit

    • lpfc: Add NVMe sequence level error recovery support commit

    • lpfc: Support dynamic unbounded SGL lists on G7 hardware commit

    • mpt3sas: Add support for PCIe Lane margin commit

    • mpt3sas: Add sysfs to know supported features commit

    • mpt3sas: Introduce module parameter to override queue depth commit

    • mpt3sas: Support MEMORY MOVE Tool box command commit

    • qedf: Add support for 20 Gbps speed commit

    • smartpqi: add gigabyte controller commit

    • smartpqi: add module param for exposure order commit

    • smartpqi: add module param to hide vsep commit

    • smartpqi: add new pci ids commit

    • smartpqi: add pci ids for fiberhome controller commit

    • smartpqi: add sysfs entries commit

  • NVM Express

  • ide: remove the sgiioc4 driver commit

  • qla2xxx: remove SGI SN2 support commit

  • qla1280: remove SGI SN2 support commit

13.3. Drivers in the Staging area

  • (FEATURED) erofs: move erofs out of staging commit

  • erofs: support bmap commit

  • (FEATURED) exfat: add exFAT filesystem code to staging commit

  • fsl-dpaa2/ethsw: Add network interface statistics commit

  • greybus: move the greybus core to drivers/greybus commit, commit, commit

  • imx7-media-csi: add i.MX6UL support commit

  • imx: add csc/scaler mem2mem device commit

  • qlge: Move drivers/net/ethernet/qlogic/qlge/ to drivers/staging/qlge/ commit

  • rtl8723bs: Remove debugging information exposed via procfs commit

  • hantro: Add support for H264 decoding commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

  • hantro: Enable VP8 decoding on RK3328 commit

  • hantro: Support RK3399 VP8 decoding commit

  • hantro: Add support for MPEG-2 decoding on RK3328 commit

  • hantro: Add support for VP8 decoding on rk3288 commit

  • media/bcm2048: remove driver commit

  • davinci: remove vpfe driver commit

  • USB: Move wusbcore and UWB to staging as it is obsolete commit

  • fbtft: Remove fbtft_device commit

  • fbtft: Remove flexfb commit

13.4. Networking

13.5. Audio

  • firewire: introduce AMDTP domain commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit, commit

  • pcm: add support for 352.8KHz and 384KHz sample rate commit

  • usb-audio: Scarlett Gen 2 mixer interface commit

  • hda

    • hdmi: Allow audio component for AMD/ATI and Nvidia HDMI commit

    • realtek: Add support for ALC623 commit

    • realtek: Add support for ALC711 commit

    • Add Tigerlake/Jasperlake PCI ID commit

    • Add support of Zhaoxin controller commit

    • hdmi: add Tigerlake support commit

    • Add Cometlake-S PCI ID commit

  • lx6464es: add support for LX6464ESe pci express variant commit

  • oxfw: support AMDTP domain commit

  • Sound Open Firmware

    • topology: initial support for Intel ALH DAI type commit

    • pcm: add ALH support commit

    • Add OF DSP device support commit

    • Intel: hda: Enable jack detection commit

    • Intel: hda: add a parameter to disable MSI commit

    • Intel: initial support for Elkhart Lake commit

    • Intel: initial support for Tiger Lake commit

    • imx: Add i.MX8 HW support commit

  • ASoC

    • Intel: boards: Add Cometlake machine driver support commit

    • Intel: sof-rt5682: add dmic dapm widget to support dmic PCM commit

    • codecs: Add uda1334 codec driver commit

    • cs47l15: Add codec driver for Cirrus Logic CS47L15 commit

    • cs47l92: Add codec driver for Cirrus Logic CS47L92 commit

    • fsl_sai: Add support for SAI new version commit

    • fsl_sai: Add support for imx7ulp/imx8mq commit

    • fsl_sai: Add support for imx8qm commit

    • jz4740: Drop lb60 board code commit

    • sun4i-i2s: Add support for DSP formats commit

    • sun4i-i2s: Support more channels commit

    • ti: davinci-i2s: Add S32_LE as support format commit

    • Remove w90x900/nuc900 platform drivers commit

  • Soundwire

    • cadence_master: add debugfs register dump commit

    • cadence_master: add kernel parameter to override interrupt mask commit

    • intel: add debugfs register dump commit

    • intel_init: add kernel module parameter to filter out links commit

    • Add device tree support for slave devices commit

    • Add debugfs support commit

13.6. Tablets, touch screens, keyboards, mouses

  • Add support for polling to input devices commit

  • soc_button_array: add support for newer surface devices commit

  • Add support for the FlySky FS-iA6B RC receiver commit

  • HID

    • wacom: support named keys on older devices commit

    • wacom: add new MobileStudio Pro 13 support commit

    • multitouch: add support for the Smart Tech panel commit

    • logitech-dj: add support of the G700(s) receiver commit

    • hid-logitech-dj: add the new Lightspeed receiver commit

    • sb0540: add support for Creative SB0540 IR receivers commit

    • google: add magnemite/masterball USB ids commit

  • Remove w90x900 keyboard driver commit

  • Remove w90x900 touchscreen driver commit

13.7. TV tuners, webcams, video capturers

  • v4l2-tpg: add support for new pixelformats commit

  • v4l2-common: add support for new RGB32 pixelformats commit

  • vivid: add support for new pixelformats commit

  • RK3288 VP8 decoding support commit, commit, commit, commit

  • vicodec: add support for 4 new RGB32 pixelformats commit

  • Add support for Cadence CSI2TX 2.1 commit

  • dvb-usb: add T230 to dvbsky commit

  • dvbsky: add support for Mygica T230C v2 commit

  • ov5640: Add support for flash and lens devices commit

  • ov5675: Add support for OV5675 sensor commit

  • Remote control

    • Add keymap for Amediatech X96-MAX remote commit

    • Add keymap for HardKernel ODROID remote commit

    • Add keymap for Khadas VIM/EDGE remote commit

    • Add keymap for Tanix TX3 mini remote commit

    • Add keymap for Tanix TX5 max remote commit

    • Add keymap for !WeTeK Play 2 remote commit

    • Add keymap for WeTek Hub remote commit

    • sunxi: Add A31 compatible commit

  • rcar-vin: Add support for RGB formats with alpha commit, commit, commit, commit

  • si2168: add support for Mygica T230C v2 commit

  • stm32-dcmi: add media controller support commit

  • stm32-dcmi: add support of several sub-devices commit

  • sunxi: Add A10 CSI driver commit

13.8. Universal Serial Bus

  • usbfs: Add ioctls for runtime power management commit

  • usbip: Implement SG support to vhci-hcd and stub driver commit

  • cdns3: Add Cadence USB3 DRD Driver commit

  • Add USB GPIO based connection detection driver commit

  • serial

    • ftdi_sio: add device IDs for Sienna and Echelon PL-20 commit

    • ftdi_sio: add support for FT232H CBUS gpios commit

    • option: add Telit FN980 compositions commit

    • option: add support for Cinterion CLS8 devices commit

  • Add V4L2_FMT_FLAG_CONTINUOUS_BYTESTREAM commit and V4L2_FMT_FLAG_DYN_RESOLUTION commit

  • gadget: aspeed: Implement dummy hub TT requests commit

  • Remove ehci-w90x900 driver commit

  • rio500: Remove Rio 500 kernel driver commit

13.9. Serial Peripheral Interface (SPI)

  • dw-pci: Add support for Intel Elkhart Lake PSE SPI commit

  • mediatek: support large PA commit

  • npcm-fiu: add NPCM FIU controller driver commit

  • Remove w90x900 driver commit

13.10. Watchdog

  • Add i.MX7ULP watchdog support commit

  • aspeed: Add support for AST2600 commit

  • aspeed: add support for dual boot commit

  • f71808e_wdt: Add F81803 support commit

  • iTCO: Add support for Cannon Lake PCH iTCO commit

  • Remove ks8695 driver commit

  • Remove w90x900 driver commit

13.11. Serial

  • 8250_pci: Add F81504A series Support commit

  • 8250_pci: Add support for Sunix serial boards commit

  • 8250_pci: Implement MSI(-X) support commit

  • lantiq: Add support for Lightning Mountain SoC commit

  • 8250: Add support for NI-Serial PXI/PXIe+485 devices commit

  • Add linflexuart driver for S32V234 commit

  • sprd: Add loopback function support commit

  • tegra: Add PIO mode support commit

  • tegra: add internal loopback functionality commit

  • tegra: add support to adjust baud rate commit

  • Remove ks8695 driver commit

  • Remove the ioc3_serial driver commit

  • Remove the ioc4_serial driver commit

  • Remove the sn_console driver commit

13.12. CPU Frequency Scaling

13.13. Device Voltage and Frequency Scaling

  • Introduce driver for NVIDIA Tegra20 commit

  • tegra: Support Tegra30 commit

13.14. Real Time Clock (RTC)

  • Add Amlogic Virtual Wake RTC commit

  • fsl-ftm-alarm: add FTM alarm driver commit

  • pcf2127: add tamper detection support commit

  • pcf2127: add watchdog feature support commit

  • sun6i: Add support for H6 RTC commit

  • sun6i: Allow using as wakeup source from suspend commit

  • Remove w90x900/nuc900 driver commit

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

  • supply

    • bq25890_charger: Add the BQ25895 part commit

    • supply: sc27xx: Add POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN attribute commit

    • supply: Drop obsolete JZ4740 driver commit

  • regulator

    • act8865: Add support for act8600 charger commit

    • Add support for SY8824C regulator commit

    • mt6358: Add support for MT6358 regulator commit

    • qcom-rpmh: Add support for SM8150 commit

    • sy8824x: add SY20276 support commit

    • sy8824x: add SY20278 support commit

    • sy8824x: add SY8824E support commit

13.16. Pin Controllers (pinctrl)

  • Ingenic: Add pinctrl driver for JZ4760 and JZ4760B commit

  • Ingenic: Add pinctrl driver for X1000 and X1000E commit

  • Ingenic: Add pinctrl driver for X1500 commit

  • aspeed: Add AST2600 pinmux support commit

  • bcm2835: Add support for BCM2711 pull-up functionality commit

  • madera: Add configuration for Cirrus Logic CS47L15 commit

  • madera: Add configuration for Cirrus Logic CS47L92 commit

  • qcom: Add SC7180 pinctrl driver commit

  • sunxi: v3s: introduce support for V3 commit

13.17. Multi Media Card (MMC)

  • sdhci-iproc: Add support for emmc2 of the BCM2711 commit

  • sdhci-of-arasan: Add Support for Intel LGM eMMC commit

  • sdhci-of-aspeed: Add support for the ASPEED SD controller commit

  • sdhci-pci: Add another Id for Intel CML commit

13.18. Memory Technology Devices (MTD)

  • mtdcore: add debugfs nodes for querying the flash name and id commit

  • rawnand: Add Macronix raw NAND controller driver commit

  • rawnand: remove w90x900 driver commit

  • rawnand: Drop obsolete JZ4740 NAND driver commit

  • spi-nor: Add Winbond w25q256jvm commit

  • spi-nor: Add support for mt35xu02g commit

  • spi-nor: add support for sst26wf016b memory IC commit

  • spi-nor: enable the debugfs for the partname and partid commit

  • spi-nor: intel-spi: Add support for Intel Tiger Lake SPI serial flash commit

13.19. Industrial I/O (iio)

  • adc: ad7606: Add support for AD7606B ADC commit

  • adc: ad7606: Add support for software mode for ad7616 commit

  • adc: stm32-adc: add analog switches supply control commit

  • cros_ec: Add calibscale for 3d MEMS commit

  • cros_ec_accel_legacy: Add support for veyron-minnie commit

  • imu: Add support for the ADIS16460 IMU commit

  • imu: st_lsm6dsx: add i3c basic support for LSM6DSO and LSM6DSR commit

  • imu: st_lsm6dsx: add support for accel/gyro unit of lsm9ds1 commit

  • imu: st_lsm6dsx: add support to ISM330DHCX commit

  • imu: st_lsm6dsx: add support to LSM6DS3TR-C commit

  • light: noa1305: Add support for NOA1305 commit

  • potentiometer: add a driver for Maxim 5432-5435 commit

  • stm32: Remove quadrature related functions from trigger driver commit

13.20. Multi Function Devices (MFD)

  • Add support for Merrifield Basin Cove PMIC commit

  • intel-lpss: Add Intel Skylake ACPI IDs commit

  • intel-lpss: Add Intel Tiger Lake PCI IDs commit

  • mt6323: Add MT6323 RTC and PWRC commit

  • Drop obsolete JZ4740 driver commit

13.21. Pulse-Width Modulation (PWM)

  • mediatek: Add MT8516 SoC support commit

  • sprd: Add Spreadtrum PWM support commit

13.22. Inter-Integrated Circuit (I2C + I3C)

  • Add i2c-icy for I2C on m68k/Amiga commit

  • axxia: support slave mode commit

  • designware-pci: Add support for Elkhart Lake PSE I2C commit

  • i2c-eeprom_slave: Add support for more eeprom models commit

  • icy: Add LTC2990 present on 2019 board revision commit

  • imx: ACPI support for NXP i2c controller commit

  • piix4: Add ACPI support commit

13.23. Hardware monitoring (hwmon)

  • Add Synaptics AS370 PVT sensor driver commit

  • ibm-cffps: Add support for version 2 of the PSU commit

  • k10temp: Add support for AMD family 17h, model 70h CPUs commit

  • lm75: add support for PCT2075 commit

  • nct6775: Integrate new model nct6116 commit

  • nct7904: Add extra sysfs support for fan, voltage and temperature commit

  • pmbus: Add Inspur Power System power supply driver commit

  • shtc1: add support for the SHTC3 sensor commit

  • Drop obsolete JZ4740 driver commit

  • Remove ads1015 driver commit

13.24. General Purpose I/O (gpio)

  • aspeed: Add SGPIO driver commit

  • aspeed: Add in ast2600 details to Aspeed driver commit

  • Add support for GPIOs over Moxtet bus commit

  • madera: Add support for Cirrus Logic CS47L15 commit and Cirrus Logic CS47L92 commit

  • Remove ks8695 driver commit

13.25. LEDs

  • apu: drop superseeded apu2/3 LED support commit

  • lm3532: Add full scale current configuration commit

13.26. DMA engines

  • tegra-apb: Support per-burst residue granularity commit

  • fsl-edma: add i.mx7ulp edma2 version support commit

  • Drop JZ4740 driver commit

13.27. Cryptography hardware acceleration

13.28. PCI

  • dwc: al: Add Amazon Annapurna Labs PCIe controller driver commit

  • mediatek: Add controller support for MT7629 commit

  • tegra: Add Tegra194 PCIe support commit

  • tegra: Add support to configure sideband pins commit

  • tegra: Add support to enable slot regulators commit

  • hotplug: remove the sgi_hotplug driver commit

13.29. Non-Transparent Bridge (NTB)

  • ntb_hw_amd: Add a new NTB PCI device ID commit

13.30. Thunderbolt

13.31. Clock

  • Add clk_min/max_rate entries in debugfs commit

  • Add support for AST2600 SoC commit

  • clk-cdce925: Add regulator support commit

  • imx: Add support for i.MX8MN clock driver commit

  • ingenic: Add driver for the TCU clocks commit

  • mediatek: Add MT6779 clock support commit

  • meson: g12a: add support for DVFS commit

  • meson: meson-sm1: add support for DVFS commit, commit, commit

  • meson: axg-audio: add g12a reset support commit

  • mvebu: Add CPU clock support for Armada 7K/8K commit, commit, commit, commit

  • mvebu: AP807 clocks support commit, commit, commit, commit, commit, commit

  • qcom: clk-alpha-pll: Add support for Trion PLLs commit

  • qcom: gcc: Add global clock controller driver for SM8150 commit

  • rockchip: Add clock controller for the rk3308 commit

  • sunxi-ng: v3s: add Allwinner V3 support commit

  • Add a new timer-ingenic driver commit

13.32. PHY ("physical layer" framework)

13.33. EDAC (Error Detection And Correction)

  • mellanox: Add ECC support for BlueField DDR4 commit

  • amd64: Add PCI device IDs for family 17h, model 70h commit

  • amd64: Support asymmetric dual-rank DIMMs commit

  • Add driver for the Marvell Armada XP SDRAM and L2 cache ECC commit

13.34. Various

  • NFC: nxp-nci: Add NXP1001 to the ACPI ID table commit

  • PTP: add support for one-shot output commit

  • PTP: introduce new versions of IOCTLs commit

  • backlight: Expose brightness curve type through sysfs commit

  • bus: Add support for Moxtet bus commit

  • bus: moxtet: Add sysfs and debugfs documentation commit

  • char/mspec: remove SGI SN2 support commit

  • char: remove the SGI snsc driver commit

  • char: remove the SGI tiocx/mbcs driver commit

  • Remove the SGI SN2 IOC3 base support commit

  • Remove the SGI SN2 IOC4 base support commit

  • eeprom: Deprecate the legacy eeprom driver commit

  • fdt: add support for rng-seed commit

  • firmware: Add Turris Mox rWTM firmware driver commit

  • firmware: add Intel Stratix10 remote system update driver commit

  • firmware: arm_scmi: Add RESET protocol in SCMI v2.0 commit

  • firmware: arm_scmi: Add discovery of SCMI v2.0 performance fastchannels commit

  • firmware: arm_scmi: Make use SCMI v2.0 fastchannel for performance protocol commit

  • firmware: imx: Add DSP IPC protocol interface commit

  • fpga: altera-cvp: Add Stratix10 (V2) Support commit

  • fpga: dfl: afu: add STP (SignalTap) support commit

  • fpga: dfl: afu: add error reporting support commit

  • fpga: dfl: afu: add userclock sysfs interfaces commit

  • fpga: dfl: fme: add DFL_FPGA_FME_PORT_RELEASE/ASSIGN ioctl support commit

  • fpga: dfl: fme: add capability sysfs interfaces commit

  • fpga: dfl: fme: add global error reporting support commit

  • fpga: dfl: pci: enable SRIOV support commit

  • interconnect: Add support for path tags commit

  • interconnect: qcom: Add QCS404 interconnect provider driver commit

  • interconnect: qcom: Add interconnect RPM over SMD driver commit

  • interconnect: qcom: Add tagging and wake/sleep support for sdm845 commit

  • irqchip: Add irq-ingenic-tcu driver commit

  • mailbox: qcom: Add support for IPQ8074 APCS commit

  • mailbox: qcom: Add support for Qualcomm SM8150 and SC7180 SoCs commit

  • mei: me: add comet point (lake) LP device ids commit

  • memory: mtk-smi: Add gals support commit

  • misc/sgi-xp: remove SGI SN2 support commit

  • misc: Remove spear13xx pcie gadget driver commit

  • misc: add the full Soft Decision Forward Error Correction (SD-FEC) driver implementation, driver DT binding and driver documentation commit, commit, commit, commit, commit, commit, commit

  • parport: parport_serial: Add support for Sunix Multi I/O boards commit

  • perf/imx_ddr: Add support for AXI ID filtering commit

  • regulator: uniphier: Add Pro5 USB3 VBUS support commit

  • remoteproc: Add a sysfs interface for name commit

  • reset: Add support for resets provided by SCMI commit

  • soc: amlogic: Add support for Everything-Else power domains controller commit

  • soc: imx-scu: Add SoC UID(unique identifier) support commit

  • soc: imx8: Add i.MX8MM UID(unique identifier) support commit

  • soc: imx8: Add i.MX8MQ UID(unique identifier) support commit

  • soc: qcom: Add socinfo driver commit

  • soc: qcom: socinfo: Expose custom attributes commit

  • soc: qcom: socinfo: Expose image information commit

  • soc: samsung: Add exynos chipid driver support commit

  • tpm/tpm_ftpm_tee: A driver for firmware TPM running inside TEE commit

  • tty: n_gsm: add ioctl to map serial device to mux'ed tty commit

  • w1: add 1-wire master driver for IP block found in SGI ASICs commit

  • w1: add DS2501, DS2502, DS2505 EPROM device driver commit

14. List of Pull Requests

15. Other news sites

KernelNewbies: LinuxChanges (last edited 2019-11-25 15:50:13 by diegocalleja)