RISC-V Linux 内核及周边技术动态第 114 期

时间：20241020
编辑：晓瑜
仓库：RISC-V Linux 内核技术调研活动
赞助：PLCT Lab, ISCAS

内核动态

RISC-V 架构支持

v4: Add DeepComputing FML13V01 board dts

This series updates Device Tree related files to introduce the FML13V10 board from DeepComputing, which incorporates a StarFive JH7110 SoC.

v10: RISC-V: Detect and report speed of unaligned vector accesses

Adds support for detecting and reporting the speed of unaligned vector accesses on RISC-V CPUs.

v1: riscv, bpf: Make BPF_CMPXCHG fully ordered

According to the prototype formal BPF memory consistency model discussed e.g. in [1] and following the ordering properties of the C/in-kernel macro atomic_cmpxchg(), a BPF atomic operation with the BPF_CMPXCHG modifier is fully ordered.

v1: RISC-V: KVM: SBI system suspend support

The SBI spec provides a specification for system suspend to RAM and Linux already supports invoking the SBI call for suspend to RAM when CONFIG_SUSPEND is selected.

v1: riscv/entry: get correct syscall number from syscall_get_nr()

The return value of syscall_enter_from_user_mode() is always -1 when the syscall was filtered. We can’t know whether syscall_nr is -1 when we get -1 from syscall_enter_from_user_mode().

v1: next: pinctrl: th1520: Dereference pointer only after NULL check

The pointer func is dereferenced before NULL check. Move the dereference after the NULL check.

v3: Prevent dynamic relocations in vDSO

v10: Linux RISC-V IOMMU Support

This patch series introduces support for RISC-V IOMMU architected hardware into the Linux kernel.

v5: riscv: spacemit: add pinctrl support to K1 SoC

This series adds pinctrl support to SpacemiT’s K1 SoC, the controller uses a single register to describe all pin functions, including bias pull up/down, drive strength, schmitter trigger, slew rate, strong pull-up, mux mode. In patch #3, we add the pinctrl property of uart device for the Bananapi-F3 board.

v4: pwm: Add pwm driver for Sophgo SG2042

Add driver for pwm controller of Sophgo SG2042 SoC.

v11: Tracepoints and static branch in Rust

This series includes a patch that adds a user of tracepoits to the rust_print sample. Please see that sample for details on what is needed to use this feature in Rust code.

v5: riscv: Add perf support to collect KVM guest statistics from host side

Add basic guest support to RISC-V perf, enabling it to distinguish whether PMU interrupts occur in the host or the guest, and then collect some basic guest information from the host side (guest os callchain is not supported for now).

v4: Introduce support for T-head TH1520 Mailbox

The T-head TH1520 SoC supports a hardware mailbox that enables two cores within the SoC to communicate and coordinate [1].

v5: riscv: sophgo: add thermal sensor support for cv180x/sg200x SoCs

This series implements driver for Sophgo cv180x/sg200x on-chip thermal sensor and adds thermal zones for CV1800B SoCs.

v1: tty: hvc: riscv_sbi: instantiate the legcay console earlier

The hvc_instantiate() is an early console discovery mechanism, it is usually called before allocating hvc terminal devices.

LoongArch 架构支持

v1: LoongArch: Enable IRQ if do_ale() triggered in irq-enabled context

Unaligned access exception can be triggered in irq-enabled context such as user mode, in this case do_ale() may call get_user() which may cause sleep.

ARM 架构支持

v6: Implement vendor resets for PSCI SYSTEM_RESET2

The PSCI SYSTEM_RESET2 call allows vendor firmware to define additional reset types which could be mapped to the reboot argument.

v8: Add mfd, pinctrl and pwm support to EN7581 SoC

Introduce airoha-mfd driver in order to load pinctrl and pwm drivers for EN7581 SoC.

v1: Add support Boundary Device Nitrogen8MP Universal SMARC Carrier Board

Add initial support for Nitrogen8MP Universal SMARC Carrier Board with Nitrogen8MP SMARC System on Module.

v1: Expose SCMI Transport properties

SCMI transports are characterized by a number of properties: the values assumed by some of them tightly depend on the choices taken at design time and on the overall archiecture of the specific platform: things like timeouts, maximum message size and number of in-flight messages are closely tied to the architecture of the platform like number of SCMI agents on the system, physical memory available to the SCMI server…so on and so forth.

v5: coresight: Add static trace id support

Some HW has static trace id which cannot be changed via software programming.

v2: Add minimal Samsung Galaxy S20 Series board, SM-G981B and SM-G980F support

This series adds initial support for the Samsung Galaxy S20 Series, also initial board support for the Samsung Galaxy S20 5G (SM-G981B) codenamed x1s and the Samsung Galaxy S20 (SM-G980F) codenamed x1slte.

v2: mailbox: add async request mechanism w/ a user

This adds a simple mailbox async mechanism, similar to the one found in the crypto subsystem. It empowers mailbox controllers with hardware queue support.

v1: Improve arm64 pkeys handling in signal delivery

This series is a follow-up to Joey’s Permission Overlay Extension (POE) series that recently landed on mainline.

v7: arm64: Support for running as a guest in Arm CCA

This series adds support for running Linux in a protected VM under the Arm Confidential Compute Architecture (CCA).

v4: Add minimal boot support for IPQ5424

The IPQ5424 is Qualcomm’s 802.11be SoC for Routers, Gateways and Access Points.

v2: arm64: stacktrace: improve unwind reporting

This series improves arm64’s unwinder to explicitly identify exception boundaries, reporting both pt_regs::pc and pt_regs::lr and explicitly identifying the source of elements in the stacktrace.

v1: KVM: arm64: Make L1Ip feature in CTR_EL0 writable from userspace

Only allow userspace to set VIPT(0b10) or PIPT(0b11) for L1Ip based on what hardware reports as both AIVIVT (0b01) and VPIPT (0b00) are documented as reserved.

v9: Marvell Odyssey uncore performance monitor support

This series of patches introduces support for uncore performance monitor units (PMUs) on the Marvell Odyssey platform. The PMUs covered in this series include the DDR PMU and LLC-TAD PMU.

v2: Add minimal Exynos990 SoC and SM-N981B support

This series adds initial support for the Exynos 990 SoC and also initial board support for the Samsung Galaxy Note20 5G (SM-N981B) codenamed c1s.

X86 架构支持

v10: block atomic writes for xfs

This series expands atomic write support to filesystems, specifically XFS.

v1: perf vendor events amd: Add more Zen 5 events and metrics

Add data fabric events and metrics taken from the now released Processor Programming Reference (PPR) for AMD Family 1Ah Model 02h Revision C1 Processors document available at the link below.

v2: KVM: SVM: Inhibit AVIC on SNP-enabled system without HvInUseWrAllowed feature

On SNP-enabled system, VMRUN marks AVIC Backing Page as in-use while the guest is running for both secure and non-secure guest. Any hypervisor write to the in-use vCPU’s AVIC backing page (e.g. to inject an interrupt) will generate unexpected #PF in the host.

GIT PULL: LOCKDEP changes for v6.13

v1: x86/mm: Make memremap(MEMREMAP_WB) map memory as encrypted by default

Make memremap(MEMREMAP_WB) produce encrypted/private mapping by default unless MEMREMAP_DEC is specified.

v3: Clavis LSM

Each end-user has their own security threat model. What is important to one end-user may not be important to another. There is not a right or wrong threat model.

v1: Introduce initial support for the AMD I3C (non-HCI) to DW driver

The AMD EPYC platform design has DIMMs connected over the I3C bus, with each DIMM containing three components: SPD, PMIC, and RCD.

v6: Dell AWCC platform_profile support

This patch adds platform_profile support for Dell devices which implement User Selectable Thermal Tables (USTT) that are meant to be controlled by Alienware Command Center (AWCC).

v1: acpi: zero-initialize acpi_object union structure

The way in which acpi_object union is being initialized varies based on compiler type, version and flags used.

v2: mm/memblock,x86,acpi: hotplug memory alignment advisement

When physical address regions are not aligned to memory block size, the misaligned portion is lost (stranded capacity).

v1: x86/mtrr: Rename mtrr_overwrite_state() to guest_force_mtrr_state()

Rename the helper to better reflect its function.

v6: MCE wrapper and support for new SMCA syndrome MSRs

This patchset adds a new wrapper for struct mce to prevent its bloating and export vendor specific error information.

v17: tracing: fprobe: function_graph: Multi-function graph and fprobe on fgraph

Here is the 17th version of the series to re-implement the fprobe on function-graph tracer.

v3: Add support for AMD hardware feedback interface

The AMD Heterogeneous core design and Hardware Feedback Interface (HFI) provide behavioral classification and a dynamically updated ranking table for the scheduler to use when choosing cores for tasks.

v4: x86/apic: Always explicitly disarm TSC-deadline timer

New processors have become pickier about the local APIC timer state before entering low power modes.

v6: Support SMT control on arm64

The core CPU control framework supports runtime SMT control which is not yet supported on arm64.

v16: tracing: fprobe: function_graph: Multi-function graph and fprobe on fgraph

Here is the 16th version of the series to re-implement the fprobe on function-graph tracer. The previous version is;

v1: platform/x86: dell-wmi: Ignore suspend notifications

Some machines like the Dell G15 5155 emit WMI events when suspending/resuming. Ignore those WMI events.

进程调度

v1: net-next: net/sched: act_api: unexport tcf_action_dump_1()

This isn’t used outside act_api.c, but is called by tcf_dump_walker() prior to its definition. So move it upwards and make it static.

v1: net: net/sched: act_api: deny mismatched skip_sw/skip_hw flags for actions created by classifiers

tcf_action_init() has logic for checking mismatches between action and filter offload flags (skip_sw/skip_hw).

v1: sched/cpuacct: show only present CPUs to userspace

After commit b0c69e1214bc (“drivers: base: Use present CPUs in GENERIC_CPU_DEVICES”) changed which CPUs are shown in /sys/devices/system/cpu/ (only “present” ones) it also makes sense to change cpuacct cgroupv1 code not to report CPUs which are not present in the system as it confuses userspace.

v1: perf tools: sched-pipe bench: add (-n) nonblocking benchmark

The -n mode will benchmark pipes in a non-blocking mode using epoll_wait.

v1: sched/fair: Rename vruntime_gt() to field_gt()

Since commit aef6987d8954 (“sched/eevdf: Propagate min_slice up the cgroup hierarchy”) introduced min_slice, we can update min_slice just like we do in __min_vruntime_update(). Rename vruntime_gt() to field_gt().

内存管理

v1: mm-unstable: mm/page_alloc: try not to overestimate free highatomic

OOM kills due to vastly overestimated free highatomic reserves were observed.

v1: mm-unstable: mm: allow set/clear page_type again

Some page flags (page->flags) were converted to page types (page->page_types). A recent example is PG_hugetlb.

v1: maple_tree: current split may result in deficient node

Here are 4 patches related to correctly split node.

v1: mm: multi-gen LRU: Have secondary MMUs participate in MM_WALK

This series replaces the final non-selftest patchs from this series[1], which introduced a similar change (and a new MMU notifier) with KVM optimizations.

v3: mm/gup: stop leaking pinned pages in low memory conditions

If a driver tries to call any of the pin_user_pages*(FOLL_LONGTERM) family of functions, and requests “too many” pages, then the call will erroneously leave pages pinned.

v1: mm, zswap: don’t touch the XArray lock if there is no entry to free

This commit takes it further by optimizing the case where zswap is enabled.

v3: powerpc/kfence: Improve kfence support (mainly Hash)

This patch series addresses following to improve kfence support on Powerpc.

v2: mm: Split critical region in remap_file_pages() and invoke LSMs in between

Commit ea7e2d5e49c0 (“mm: call the security_mmap_file() LSM hook in remap_file_pages()”) fixed a security issue, it added an LSM check when trying to remap file pages, so that LSMs have the opportunity to evaluate such action like for other memory operations such as mmap() and mprotect().

v1: mm: Split locks in remap_file_pages()

Commit ea7e2d5e49c0 (“mm: call the security_mmap_file() LSM hook in remap_file_pages()”) fixed a security issue, it added an LSM check when trying to remap file pages, so that LSMs have the opportunity to evaluate such action like for other memory operations such as mmap() and mprotect().

v1: mm: zswap: add support for zswapin of large folios

This series makes sure that the benefits of large folios (fewer page faults, batched PTE and rmap manipulation, reduced lru list, TLB coalescing (for arm64 and amd)) are not lost at swap out when using zswap.

v2: linux-mm: make pcp_decay_high working better with NOHZ full

When a cpu entring NOHZ full, quiet_vmstat may flush percpu zonestats and nodestats.

v1: zswap IAA decompress batching

This patch-series applies over [1], the IAA compress batching patch-series.

v1: zswap IAA compress batching

This RFC patch-series introduces the use of the Intel Analytics Accelerator (IAA) for parallel compression of pages in a folio, and for batched reclaim of hybrid any-order batches of folios in shrink_folio_list().

v1: mm: make pcp decay work with onhz

v2: Improve the tmpfs large folio read performance

The tmpfs has already supported the PMD-sized large folios, but the tmpfs read operation still performs copying at the PAGE SIZE granularity, which is not perfect. This patch changes to copy data at the folio granularity, which can improve the read performance.

v7: tmpfs: Add case-insensitive support for tmpfs

This patchset adds support for case-insensitive file names lookups in tmpfs.

v4: introduce PIDFD_SELF* sentinels

This series introduces sentinels for this purposes which can be passed as the pidfd in this instance rather than having to establish a dummy fd for this purpose.

v1: implement lightweight guard pages

Userland library functions such as allocators and threading implementations often require regions of memory to act as ‘guard pages’ - mappings which, when accessed, result in a fatal signal being sent to the accessing process.

v2: mm/mglru: reset page lru tier bits when activating

When a folio is activated, lru_gen_add_folio() moves the folio to the youngest generation.

v3: bpf: lib/buildid: handle memfd_secret() files in build_id_parse()

We need to handle this special case gracefully in build ID fetching code. Return -EFAULT whenever secretmem file is passed to build_id_parse() family of APIs.

v1: memcg/hugetlb: Adding hugeTLB counters to memory controller

HugeTLB usage is a metric that can provide utility for monitors hoping to get more insight into the memory usage patterns in cgroups.

v4: tmpfs: don’t enable large folios if not supported

The tmpfs could support large folio, but there is some configurable options(mount options and runtime deny/force) to enable/disable large folio allocation, so there is a performance issue when perform write without large folio, the issue is similar to commit 4e527d5841e2 (“iomap: fault in smaller chunks for non-large folio mappings”).

v1: memblock: Uniform initialization all reserved pages to MIGRATE_MOVABLE

Currently when CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set, the reserved pages are initialized to MIGRATE_MOVABLE by default in memmap_init.

v1: munmap sealed memory cause memory to split (bug)

It appears there is a regression on the latest mm, when munmap sealed memory, it can cause unexpected VMA split.

v3: mm/slub: Improve data handling of krealloc() when orig_size is enabled

Danilo Krummrich’s patch [1] raised one problem about krealloc() that its caller doesn’t pass the old request size, say the object is 64 bytes kmalloc one, but caller originally only requested 48 bytes. Then when krealloc() shrinks or grows in the same object, or allocate a new bigger object, it lacks this ‘original size’ information to do accurate data preserving or zeroing (when __GFP_ZERO is set).

v3: vmscan: add a vmscan event for reclaim_pages

The reclaim_folio_list uses a dummy reclaim_stat and is not being used. To know the memory stat, add a new trace event. This is useful how how many pages are not reclaimed or why.

v1: mm: swap: Use str_true_false() helper function

Remove hard-coded strings by using the helper function str_true_false().

文件系统

v4: introduce PIDFD_SELF* sentinels

This series introduces sentinels for this purposes which can be passed as the pidfd in this instance rather than having to establish a dummy fd for this purpose.

v1: rust: task: adjust safety comments in Task methods

The Task struct has several safety comments that aren’t so great. For example, the reason that it’s okay to read the pid is that the field is immutable, so there is no data race, which is not what the safety comment says.

v1: iomap: turn iomap_want_unshare_iter into an inline function

iomap_want_unshare_iter currently sits in fs/iomap/buffered-io.c, which depends on CONFIG_BLOCK. It is also in used in fs/dax.c whіch has no such dependency. Given that it is a trivial check turn it into an inline in include/linux/iomap.h to fix the DAX && !BLOCK build.

v3: ovl: file descriptors based layer setup

Currently overlayfs only allows specifying layers through path names. This is inconvenient for users such as systemd that want to assemble an overlayfs mount purely based on file descriptors.

v2: fsnotify, lsm: Decouple fsnotify from lsm

Currently, fsnotify_open_perm() is called from security_file_open(). This is not right for CONFIG_SECURITY=n and CONFIG_FSNOTIFY=y case, as security_file_open() in this combination will be a no-op and not call fsnotify_open_perm(). Fix this by calling fsnotify_open_perm() directly.

v1: blk: optimization for classic polling

This removes the dependency on interrupts to wake up task. Set task state as TASK_RUNNING, if need_resched() returns true, while polling for IO completion.

网络设备

v1: drivers/net/usb: Lenovo Mini Dock, add support for new USB device ID 0x17EF:0x3098 for the r8152 driver

From 7a75dea5721225f4280be53996421962af430c8b Mon Sep 17 00:00:00 2001

v3: net-next: AccECN protocol preparation patch series

This updated patch series is grouped in preparation for the AccECN protocol, and is part of the full AccECN patch series.

v3: net-next: DualPI2 patch

Please find the updated patch for DualPI2 (IETF RFC9332 https://datatracker.ietf.org/doc/html/rfc9332).

v1: net: stmmac: Disable PCS Link and AN interrupt when PCS AN is disabled

Currently we disable PCS ANE when the link speed is 2.5Gbps. mac_link_up callback internally calls the fix_mac_speed which internally calls stmmac_pcs_ctrl_ane to disable the ANE for 2.5Gbps.

v1: net: usb: qmi_wwan: add Fibocom FG132 0x0112 composition

Add Fibocom FG132 0x0112 composition.

[net-next PATCH 0/6] CN20K silicon with mbox support

This patch series add basic mbox support for AF (PF0) <=> PFs and PF <=> VFs. AF <=> VFs communication and variable mbox size support will come in later.

v1: net-next: net: mv643xx: use ethtool_puts

Allows simplifying get_strings and avoids manual pointer manipulation.

v1: wifi: wilc1000: Add proper error handling for remaining CMD52

A few of the CMD52 calls did not have any error handling, add it. This prevents odd errors like “Unexpected interrupt (1) int=nnn” when the CMD52 fails just above in the IRQ handler and the CMD52 error code is ignored by the driver. Fill the error handling in.

v1: QRTR Multi-endpoint support

The current implementation of QRTR assumes that each entity on the QRTR IPC bus is uniquely identifiable by its node/port combination, with node/port combinations being used to route messages between entities.

v3: net-next: net: atlantic: support reading SFP module info

Add support for reading SFP module info and digital diagnostic monitoring data if supported by the module. The only Aquantia controller without an integrated PHY is the AQC100 which belongs to the B0 revision, that’s why it’s only implemented there.

v4: net: dsa: microchip: disable EEE for KSZ879x/KSZ877x/KSZ876x

Disable EEE for additional switches with this errata and provide additional comments referring to the public errata document.

v3: net: atlantic: support reading SFP module info

Add support for reading SFP module info and digital diagnostic monitoring data if supported by the module. The only Aquantia controller without an integrated PHY is the AQC100 which belongs to the B0 revision, that’s why it’s only implemented there.

v2: Enable Ethernet on the Genio 700 EVK board

The patches in this series add the ethernet node on mt8188 and enable it on the Genio 700 EVK board.

v1: ipmr: Don’t mark ip6mr_rtnl_msg_handlers as __initconst

This gets referenced by the ip6_mr_cleanup function, so it must not be discarded early.

v3: iwl-next: Refactor sending DDP + E830 support

This series refactors sending DDP segments in accordance to computing “last” bit of AQ request (1st patch), then adds support for extended format (“valid” + “last” bits in a new “flags” field) of DDP that was changed to support Multi-Segment DDP packages needed by E830.

v5: net-next: udp: Add 4-tuple hash for connected sockets

This patchset introduces 4-tuple hash for connected udp sockets, to make connected udp lookup faster.

v1: nf-next: netfilter: bpf: Pass string literal as format argument of request_module()

Both gcc-14 and clang-18 report that passing a non-string literal as the format argument of request_module() is potentially insecure.

v2: bpf-next: XDP metadata: Rx checksum/GSO hint; Tx GSO offload

This series introduce XDP metadata functionality, including Rx checksum/GSO hint and Tx GSO offload. This is aimed to transfer control fields when processing jumbo frames between VMs.

v1: net-next: netlink: specs: Add missing bitset attrs to ethtool spec

There are a couple of attributes missing from the ‘bitset’ attribute-set in the ethtool netlink spec.

v9: iwl-next: igb: Add support for AF_XDP zero-copy

This is version v8 of the AF_XDP zero-copy support for igb. Since Sriram’s duties changed I am sending this instead. Additionally, I’ve tested this on real hardware, Intel i210.

v2: net-next: net: stmmac: Refactor FPE as a separate module

Refactor FPE implementation by moving common code for DWMAC4 and DWXGMAC into a separate FPE module.

v1: net-next: net: netdev_tx_sent_queue() small optimization

Change smp_mb() imediately following a set_bit() with smp_mb__after_atomic().

v3: pinctrl: qcom: Introduce Pinctrl for QCS8300

Introduce Top Level Mode Multiplexer dt-binding and driver for Qualcomm QCS8300 SoC.

v1: net: mctp i2c: handle NULL header address

daddr can be NULL if there is no neighbour table entry present, in that case the tx packet should be dropped.

v1: net-next: ipv4: Switch inet_addr_hash() to less predictable hash.

Recently, commit 4a0ec2aa0704 (“ipv6: switch inet6_addr_hash() to less predictable hash”) and commit 4daf4dc275f1 (“ipv6: switch inet6_acaddr_hash() to less predictable hash”) hardened IPv6 address hash functions.

v1: net-next: r8169: enable EEE at 2.5G per default on RTL8125B

Register a6d/12 is shadowing register MDIO_AN_EEE_ADV2. So this line disables advertisement of EEE at 2.5G.

安全增强

v1: next: powerpc/ps3: replace open-coded sysfs_emit function

This patch replaces open-coded sysfs_emit() in sysfs .show() callbacks

v1: next: net: dev: Introduce struct sockaddr_legacy

We are currently working on enabling the -Wflex-array-member-not-at-end compiler option. This option has helped us detect several objects of the type struct sockaddr that appear in the middle of composite structures like struct rtentry, struct compat_rtentry, and others:

v2: seal system mappings

Those mappings are readonly or executable only, sealing can protect them from ever changing during the life time of the process.

异步 IO

v1: for-next: io_uring: static_key for !IORING_SETUP_NO_SQARRAY

IORING_SETUP_NO_SQARRAY should be preferred and used by default by liburing, optimise flag checking in io_get_sqe() with a static key.

v1: for-next: io_uring: kill io_llist_xchg

io_llist_xchg is only used to set the list to NULL, which can also be done with llist_del_all(). Use the latter and kill io_llist_xchg.

v1: io_uring/sqpoll: ensure task state is TASK_RUNNING when running task_work

Ensure that the task state is set appropriately for that, just like what is done for the other cases in io_run_task_work().

v1: io_uring/rsrc: ignore dummy_ubuf for buffer cloning

For placeholder buffers, &dummy_ubuf is assigned which is a static value.

v1: io_uring/sqpoll: close race on waiting for sqring entries

When an application uses SQPOLL, it must wait for the SQPOLL thread to consume SQE entries, if it fails to get an sqe when calling io_uring_get_sqe().

v1: liburing: support for discard block commands

Add helpers for the block layer discard commands, as well as some tests and man pages.

v4: napi tracking strategy

the patch serie consist of very minor fixes followed by the core of the changes to implement the new feature.

v7: io_uring: support sqe group and leased group kbuf

The 4th patch supports generic sqe group which is like link chain, but allows each sqe in group to be issued in parallel and the group shares same IO_LINK & IO_DRAIN boundary, so N:M dependency can be supported with sqe group & io link together.

Rust For Linux

v8: rust: Add local_irq abstraction, SpinLockIrq

This adds a token for annotating contexts where IRQs may be disabled on non-PREEMPT_RT kernels, a way to use these tokens with Lock types, and introduces bindings for spin_lock_irqsave() and spin_unlock_irqrestore().

v2: rust: add PROCMACROLDFLAGS

This is needed because the list of flags to link hostprogs is not necessarily the same as the list of flags used to link libmacros.so.

v3: hrtimer Rust API

This series adds support for using the hrtimer subsystem from Rust code.

v2: rust: page: add Rust version of PAGE_ALIGN

This is a useful for helper for working with indices into buffers that consist of several pages.

v6: Extended MODVERSIONS Support

This patch series is intended for use alongside the Implement MODVERSIONS for RUST series as a replacement for the symbol name hashing approach used there to enable RUST and MODVERSIONS at the same time.

BPF

v6: net-next: net: stmmac: Add PCI driver support for BCM8958x

This patchset adds basic PCI ethernet device driver support for Broadcom BCM8958x Automotive Ethernet switch SoC devices.

v6: powerpc: Core ftrace rework, support for ftrace direct and bpf trampolines

This series reworks core ftrace support on powerpc to have the function profiling sequence moved out of line. This enables us to have a single nop at kernel function entry virtually eliminating effect of the function tracer when it is not enabled. The function profile sequence is moved out of line and is allocated at two separate places depending on a new config option.

v1: Only cgroup v2 can be attached by bpf programs

Only cgroup v2 can be attached by bpf programs.

v5: bpf-next: bpf: Support private stack for bpf progs

This patch set implemented a percpu private stack based approach for x86 arch. Please see each individual patch for details.

v1: XDP metadata: Rx checksum/GSO hint; Tx GSO offload

This series introduce XDP metadata functionality, including Rx checksum/GSO hint and Tx GSO offload. This is aimed to transfer control fields when processing jumbo frames between VMs.

v2: sched_ext: Use btf_ids to resolve task_struct

Save the searching time during bpf_scx_init.

v5: bpf-next: Implement mechanism to signal other threads

This set implements a kfunc called bpf_send_signal_task() that is similar to sigqueue() as it can send a signal along with a cookie to a thread or thread group.

v1: net-next: Bonding: return detailed error about XDP failures

This patch set return detailed error about XDP failures. And update bonding document about XDP supports.

v1: sched_ext: Use BTF_ID to resolve task_struct

Save the searching time during bpf_scx_init.

v2: net-next: idpf: XDP chapter III: core XDP changes (+libeth_xdp)

They are implemented mostly as inlines with inline callback arguments. They will be then uninlined in the drivers with sane function sizes, but without any indirect calls.

v1: Add jump table support for objtool on LoongArch

This series is based on 6.12-rc3, tested with the latest (20241012) upstream mainline binutils and gcc.

v1: bpftool: optimize if statement code

Since both conditions are used to check whether len is valid, we can combine the two conditions into a single if statement

周边技术动态

Qemu

v4: target/riscv: Add support for Smdbltrp and Ssdbltrp extensions

This series adds support for Ssdbltrp and Smdbltrp ratified ISA extensions [1]. It is based on the Smrnmi series [6].

v2: hw/riscv: Add Microblaze V 32bit virt board

Add a basic board with interrupt controller (intc), timer, serial (uartlite), small memory called LMB@0 (128kB) and DDR@0x80000000 (configured via command line eg. -m 2g).

v10: riscv: QEMU RISC-V IOMMU support

In this new version we fixed address alignment issues in some command queue commands, pointed out by Jason in v9.

v6: tcg/riscv: Add support for vector

Introduce support for the RISC-V vector extension in the TCG backend.

Host riscv disas is broken

This structure comes from RISCVCPU, a target structure. There is no such structure for the host, causing null pointer dereferences.

v3: target/riscv: add endianness checks and atomicity guarantees.

This version 3 of the patch adds endianness safety to both the optimizations brought by the patch set.

U-Boot

v1: PolarFire SoC clock devicetree rework

I’ve implemented things here in a backwards compatible manner, so that these changes can be applied now without the relevant devicetree patches (since the dust has not settled on all aspects of the rework) and the revised devicetree can make its way into U-Boot via a regular OF_UPSTREAM update once merged “upstream”.

risc-v - efi_free_pool: illegal free

I am trying to create a RISC-V Archlinux image for the StarFive VisionFive 2 v1.3B SBC.