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2025-03-20PCI: Move cardbus IO size declarations into pci/pci.hIlpo Järvinen
For some reason, cardbus related io/mem size declarations are in linux/pci.h, whereas non-cardbus sizes are already in pci/pci.h. Move all them into one place in pci/pci.h. Link: https://lore.kernel.org/r/20250311174701.3586-4-ilpo.jarvinen@linux.intel.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2025-03-20PCI: Make pci_setup_bridge() staticIlpo Järvinen
pci_setup_bridge() is only used within setup-bus.c. Therefore, make it a static function. Link: https://lore.kernel.org/r/20250311174701.3586-3-ilpo.jarvinen@linux.intel.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2025-03-20PCI: Move resource reassignment func declarations into pci/pci.hIlpo Järvinen
Neither pci_reassign_bridge_resources() nor pci_reassign_resource() is used outside of the PCI subsystem. They seem to be naturally static functions but since resource fitting/assignment is split between setup-bus.c and setup-res.c, they fall into different sides of the divide and need to be declared. Move the declarations of pci_reassign_bridge_resources() and pci_reassign_resource() into pci/pci.h to keep them internal to PCI subsystem. Link: https://lore.kernel.org/r/20250311174701.3586-2-ilpo.jarvinen@linux.intel.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2025-03-20PCI: Move pci_rescan_bus_bridge_resize() declaration to pci/pci.hIlpo Järvinen
pci_rescan_bus_bridge_resize() is only used by code inside PCI subsystem. The comment also falsely advertises it to be for hotplug drivers, yet the only caller is from sysfs store function. Move the function declaration into pci/pci.h. Link: https://lore.kernel.org/r/20250311174701.3586-1-ilpo.jarvinen@linux.intel.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2025-03-20cpumask: align text in commentJoel Savitz
Since commit 4e1a7df45480 ("cpumask: Add enabled cpumask for present CPUs that can be brought online") introduced cpu_enabled_mask, the comment line describing the mask has been slightly out of alignment with the adjacent lines. Fix this by removing a single space character. Signed-off-by: Joel Savitz <jsavitz@redhat.com> Signed-off-by: Yury Norov <yury.norov@gmail.com>
2025-03-20hyperv: Add definitions for root partition driver to hv headersNuno Das Neves
A few additional definitions are required for the mshv driver code (to follow). Introduce those here and clean up a little bit while at it. Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Reviewed-by: Roman Kisel <romank@linux.microsoft.com> Reviewed-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> Reviewed-by: Tianyu Lan <tiala@microsoft.com> Link: https://lore.kernel.org/r/1741980536-3865-10-git-send-email-nunodasneves@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <1741980536-3865-10-git-send-email-nunodasneves@linux.microsoft.com>
2025-03-20x86: hyperv: Add mshv_handler() irq handler and setup functionNuno Das Neves
Add mshv_handler() to process messages related to managing guest partitions such as intercepts, doorbells, and scheduling messages. In a (non-nested) root partition, the same interrupt vector is shared between the vmbus and mshv_root drivers. Introduce a stub for mshv_handler() and call it in sysvec_hyperv_callback alongside vmbus_handler(). Even though both handlers will be called for every Hyper-V interrupt, the messages for each driver are delivered to different offsets within the SYNIC message page, so they won't step on each other. Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Reviewed-by: Wei Liu <wei.liu@kernel.org> Reviewed-by: Tianyu Lan <tiala@microsoft.com> Reviewed-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> Link: https://lore.kernel.org/r/1741980536-3865-9-git-send-email-nunodasneves@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <1741980536-3865-9-git-send-email-nunodasneves@linux.microsoft.com>
2025-03-20hyperv: Introduce hv_recommend_using_aeoi()Nuno Das Neves
Factor out the check for enabling auto eoi, to be reused in root partition code. No functional changes. Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Reviewed-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> Reviewed-by: Easwar Hariharan <eahariha@linux.microsoft.com> Reviewed-by: Michael Kelley <mhklinux@outlook.com> Reviewed-by: Tianyu Lan <tiala@microsoft.com> Link: https://lore.kernel.org/r/1741980536-3865-5-git-send-email-nunodasneves@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <1741980536-3865-5-git-send-email-nunodasneves@linux.microsoft.com>
2025-03-20arm64/hyperv: Add some missing functions to arm64Nuno Das Neves
These non-nested msr and fast hypercall functions are present in x86, but they must be available in both architectures for the root partition driver code. While at it, remove the redundant 'extern' keywords from the hv_do_hypercall() variants in asm-generic/mshyperv.h. Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Reviewed-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> Reviewed-by: Roman Kisel <romank@linux.microsoft.com> Link: https://lore.kernel.org/r/1741980536-3865-4-git-send-email-nunodasneves@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <1741980536-3865-4-git-send-email-nunodasneves@linux.microsoft.com>
2025-03-20x86/mshyperv: Add support for extended Hyper-V featuresStanislav Kinsburskii
Extend the "ms_hyperv_info" structure to include a new field, "ext_features", for capturing extended Hyper-V features. Update the "ms_hyperv_init_platform" function to retrieve these features using the cpuid instruction and include them in the informational output. Signed-off-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Reviewed-by: Easwar Hariharan <eahariha@linux.microsoft.com> Reviewed-by: Roman Kisel <romank@linux.microsoft.com> Reviewed-by: Tianyu Lan <tiala@microsoft.com> Reviewed-by: Michael Kelley <mhklinux@outlook.com> Link: https://lore.kernel.org/r/1741980536-3865-3-git-send-email-nunodasneves@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <1741980536-3865-3-git-send-email-nunodasneves@linux.microsoft.com>
2025-03-20hyperv: Log hypercall status codes as stringsNuno Das Neves
Introduce hv_status_printk() macros as a convenience to log hypercall errors, formatting them with the status code (HV_STATUS_*) as a raw hex value and also as a string, which saves some time while debugging. Create a table of HV_STATUS_ codes with strings and mapped errnos, and use it for hv_result_to_string() and hv_result_to_errno(). Use the new hv_status_printk()s in hv_proc.c, hyperv-iommu.c, and irqdomain.c hypercalls to aid debugging in the root partition. Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Reviewed-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> Link: https://lore.kernel.org/r/1741980536-3865-2-git-send-email-nunodasneves@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <1741980536-3865-2-git-send-email-nunodasneves@linux.microsoft.com>
2025-03-20hyperv: Remove unused union and structsThorsten Blum
The union vmpacket_largest_possible_header and several structs have not been used for a long time afaict - remove them. Reviewed-by: Michael Kelley <mhklinux@outlook.com> Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev> Link: https://lore.kernel.org/r/20250311091634.494888-2-thorsten.blum@linux.dev Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <20250311091634.494888-2-thorsten.blum@linux.dev>
2025-03-20hyperv: Add CONFIG_MSHV_ROOT to gate root partition supportNuno Das Neves
CONFIG_MSHV_ROOT allows kernels built to run as a normal Hyper-V guest to exclude the root partition code, which is expected to grow significantly over time. This option is a tristate so future driver code can be built as a (m)odule, allowing faster development iteration cycles. If CONFIG_MSHV_ROOT is disabled, don't compile hv_proc.c, and stub hv_root_partition() to return false unconditionally. This allows the compiler to optimize away root partition code blocks since they will be disabled at compile time. In the case of booting as root partition *without* CONFIG_MSHV_ROOT enabled, print a critical error (the kernel will likely crash). Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Reviewed-by: Easwar Hariharan <eahariha@linux.microsoft.com> Reviewed-by: Michael Kelley <mhklinux@outlook.com> Link: https://lore.kernel.org/r/1740167795-13296-4-git-send-email-nunodasneves@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <1740167795-13296-4-git-send-email-nunodasneves@linux.microsoft.com>
2025-03-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netPaolo Abeni
Cross-merge networking fixes after downstream PR (net-6.14-rc8). Conflict: tools/testing/selftests/net/Makefile 03544faad761 ("selftest: net: add proc_net_pktgen") 3ed61b8938c6 ("selftests: net: test for lwtunnel dst ref loops") tools/testing/selftests/net/config: 85cb3711acb8 ("selftests: net: Add test cases for link and peer netns") 3ed61b8938c6 ("selftests: net: test for lwtunnel dst ref loops") Adjacent commits: tools/testing/selftests/net/Makefile c935af429ec2 ("selftests: net: add support for testing SO_RCVMARK and SO_RCVPRIORITY") 355d940f4d5a ("Revert "selftests: Add IPv6 link-local address generation tests for GRE devices."") Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-03-20Merge branch 'kvm-nvmx-and-vm-teardown' into HEADPaolo Bonzini
The immediate issue being fixed here is a nVMX bug where KVM fails to detect that, after nested VM-Exit, L1 has a pending IRQ (or NMI). However, checking for a pending interrupt accesses the legacy PIC, and x86's kvm_arch_destroy_vm() currently frees the PIC before destroying vCPUs, i.e. checking for IRQs during the forced nested VM-Exit results in a NULL pointer deref; that's a prerequisite for the nVMX fix. The remaining patches attempt to bring a bit of sanity to x86's VM teardown code, which has accumulated a lot of cruft over the years. E.g. KVM currently unloads each vCPU's MMUs in a separate operation from destroying vCPUs, all because when guest SMP support was added, KVM had a kludgy MMU teardown flow that broke when a VM had more than one 1 vCPU. And that oddity lived on, for 18 years... Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-03-20Merge tag 'kvmarm-6.15' of ↵Paolo Bonzini
https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/arm64 updates for 6.15 - Nested virtualization support for VGICv3, giving the nested hypervisor control of the VGIC hardware when running an L2 VM - Removal of 'late' nested virtualization feature register masking, making the supported feature set directly visible to userspace - Support for emulating FEAT_PMUv3 on Apple silicon, taking advantage of an IMPLEMENTATION DEFINED trap that covers all PMUv3 registers - Paravirtual interface for discovering the set of CPU implementations where a VM may run, addressing a longstanding issue of guest CPU errata awareness in big-little systems and cross-implementation VM migration - Userspace control of the registers responsible for identifying a particular CPU implementation (MIDR_EL1, REVIDR_EL1, AIDR_EL1), allowing VMs to be migrated cross-implementation - pKVM updates, including support for tracking stage-2 page table allocations in the protected hypervisor in the 'SecPageTable' stat - Fixes to vPMU, ensuring that userspace updates to the vPMU after KVM_RUN are reflected into the backing perf events
2025-03-20cgroup: rstat: Cleanup flushing functions and lockingYosry Ahmed
Now that the rstat lock is being re-acquired on every CPU iteration in cgroup_rstat_flush_locked(), having the initially acquire the lock is unnecessary and unclear. Inline cgroup_rstat_flush_locked() into cgroup_rstat_flush() and move the lock/unlock calls to the beginning and ending of the loop body to make the critical section obvious. cgroup_rstat_flush_hold/release() do not make much sense with the lock being dropped and reacquired internally. Since it has no external callers, remove it and explicitly acquire the lock in cgroup_base_stat_cputime_show() instead. This leaves the code with a single flushing function, cgroup_rstat_flush(). Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev> Signed-off-by: Tejun Heo <tj@kernel.org>
2025-03-20Merge tag 'net-6.14-rc8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Paolo Abeni: "Including fixes from can, bluetooth and ipsec. This contains a last minute revert of a recent GRE patch, mostly to allow me stating there are no known regressions outstanding. Current release - regressions: - revert "gre: Fix IPv6 link-local address generation." - eth: ti: am65-cpsw: fix NAPI registration sequence Previous releases - regressions: - ipv6: fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw(). - mptcp: fix data stream corruption in the address announcement - bluetooth: fix connection regression between LE and non-LE adapters - can: - flexcan: only change CAN state when link up in system PM - ucan: fix out of bound read in strscpy() source Previous releases - always broken: - lwtunnel: fix reentry loops - ipv6: fix TCP GSO segmentation with NAT - xfrm: force software GSO only in tunnel mode - eth: ti: icssg-prueth: add lock to stats Misc: - add Andrea Mayer as a maintainer of SRv6" * tag 'net-6.14-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (33 commits) MAINTAINERS: Add Andrea Mayer as a maintainer of SRv6 Revert "gre: Fix IPv6 link-local address generation." Revert "selftests: Add IPv6 link-local address generation tests for GRE devices." net/neighbor: add missing policy for NDTPA_QUEUE_LENBYTES tools headers: Sync uapi/asm-generic/socket.h with the kernel sources mptcp: Fix data stream corruption in the address announcement selftests: net: test for lwtunnel dst ref loops net: ipv6: ioam6: fix lwtunnel_output() loop net: lwtunnel: fix recursion loops net: ti: icssg-prueth: Add lock to stats net: atm: fix use after free in lec_send() xsk: fix an integer overflow in xp_create_and_assign_umem() net: stmmac: dwc-qos-eth: use devm_kzalloc() for AXI data selftests: drv-net: use defer in the ping test phy: fix xa_alloc_cyclic() error handling dpll: fix xa_alloc_cyclic() error handling devlink: fix xa_alloc_cyclic() error handling ipv6: Set errno after ip_fib_metrics_init() in ip6_route_info_create(). ipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw(). net: ipv6: fix TCP GSO segmentation with NAT ...
2025-03-20ASoC: wm8904: Add DMIC and DRC supportMark Brown
Merge series from Francesco Dolcini <francesco@dolcini.it>: This patch series adds DMIC and DRC support to the WM8904 driver, a new of_ helper is added to simplify the driver code. DRC functionality is added in the same patch series to provide the necessary dynamic range control to make DMIC support useful. The WM8904 supports digital microphones on two of its inputs: IN1L/DMICDAT1 and IN1R/DMICDAT2. These two inputs can either be connected to an ADC or to the DMIC system. There is an ADC for each line, and only one DMIC block. This DMIC block is either connected to DMICDAT1 or to DMICDAT2. One DMIC data line supports two digital microphones via time multiplexing. The pin's functionality is decided during hardware design (IN1L vs DMICDAT1 and IN1R vs DMICDAT2). This is reflected in the Device Tree. If one line is analog and one is DMIC, we need to be able to switch between ADC and DMIC at runtime. The DMIC source is known from the Device Tree. If both are DMIC inputs, we need to be able to switch the DMIC source. There is no need to switch between ADC and DMIC at runtime. Therefore, kcontrols are dynamically added by the driver depending on its Device Tree configuration. This is a heavy rework of a previous patch series provided by Alifer Moraes and Pierluigi Passaro, https://lore.kernel.org/lkml/20220307141041.27538-1-alifer.m@variscite.com.
2025-03-20tty: serdev: drop serdev_controller_ops::write_room()Jiri Slaby (SUSE)
In particular, serdev_device_write_room() is not called, so the whole serdev's write_room() can go. Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Cc: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20250317070046.24386-17-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-03-20tty: tty_driver: introduce TTY driver sub/types enumsJiri Slaby (SUSE)
Convert TTY_DRIVER_TYPE_*, and subtype macros to two enums: tty_driver_type and tty_driver_subtype. This allows for easier kernel-doc (later), grouping of these nicely, and proper checking. The tty_driver's ::type and ::subtype now use these enums instead of bare "short". Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250317070046.24386-16-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-03-20tty: tty_driver: document both {,__}tty_alloc_driver() properlyJiri Slaby (SUSE)
__tty_alloc_driver()'s kernel-doc needed some care: describe the return value using the standard "Returns:", and use the new enum tty_driver_flag for @flags. Then, the tty_alloc_driver() macro was undocumented, but referenced many times in the docs. Copy the docs from the above (except the @owner parameter, obviously). Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250317070046.24386-15-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-03-20tty: tty_driver: convert "TTY Driver Flags" to an enumJiri Slaby (SUSE)
Convert TTY_DRIVER_* macros (flags) to an enum. This allows for easier kernel-doc (the comment needed fine tuning), grouping of these nicely, and proper checking. Given these are flags, define them using modern BIT() instead of hex constants. It turns out (thanks, kernel-doc checker) that internal TTY_DRIVER_INSTALLED was undocumented. Fix that too. Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250317070046.24386-14-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-03-20tty: tty_driver: move TTY macros to the topJiri Slaby (SUSE)
So that they can be referenced in structs once converted to enums (in the next patches). Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250317070046.24386-13-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-03-20tty: move N_TTY_BUF_SIZE to n_ttyJiri Slaby (SUSE)
"N_TTY_BUF_SIZE" is private to n_tty and shall not be exposed to the world. Definitely not in tty.h somewhere in the middle of "struct tty_struct". This is a remnant of moving "read_flags" to "struct n_tty_data" in commit 3fe780b379fa ("TTY: move ldisc data from tty_struct: bitmaps"). But some cleanup was needed first (in previous patches). Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250317070046.24386-5-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-03-20tty: convert "TTY Struct Flags" to an enumJiri Slaby (SUSE)
Convert TTY_* macros (flags) to an enum. This allows for easier kernel-doc (the comment needed fine tuning), grouping of these nicely, and proper checking. Note that these are bit positions. So they are used such as test_bit(TTY_THROTTLED, ...). Given these are not the user API (only in-kernel API/ABI), the bit positions are NOT preserved in this patch. All are renumbered naturally using the enum-auto-numbering. Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250317070046.24386-2-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-03-20iomap: rework IOMAP atomic flagsJohn Garry
Flag IOMAP_ATOMIC_SW is not really required. The idea of having this flag is that the FS ->iomap_begin callback could check if this flag is set to decide whether to do a SW (FS-based) atomic write. But the FS can set which ->iomap_begin callback it wants when deciding to do a FS-based atomic write. Furthermore, it was thought that IOMAP_ATOMIC_HW is not a proper name, as the block driver can use SW-methods to emulate an atomic write. So change back to IOMAP_ATOMIC. The ->iomap_begin callback needs though to indicate to iomap core that REQ_ATOMIC needs to be set, so add IOMAP_F_ATOMIC_BIO for that. These changes were suggested by Christoph Hellwig and Dave Chinner. Signed-off-by: John Garry <john.g.garry@oracle.com> Link: https://lore.kernel.org/r/20250320120250.4087011-4-john.g.garry@oracle.com Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-03-20Merge tag 'coresight-next-v6.15' of ↵Greg Kroah-Hartman
ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/coresight/linux into char-misc-next Suzuki writes: coresight: updates for Linux v6.15 CoreSight self-hosted tracing driver subsystem update for Linux v6.15. The update includes: - CoreSight trace capture for Panic/Watchdog timeouts - Fixes to ETM4x driver to synchronize register reads as required by the TRM - Support for Qualcomm CoreSight TMC Control Unit driver - Conversion of device locks to raw_spinlock for components that are used by the Perf mode. - Miscellaneous fixes for the subsystem Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> * tag 'coresight-next-v6.15' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/coresight/linux: (41 commits) Coresight: Fix a NULL vs IS_ERR() bug in probe coresight: configfs: Constify struct config_item_type coresight: docs: Remove target sink from examples coresight/ultrasoc: change smb_drv_data spinlock's type to raw_spinlock_t coresight-tmc: change tmc_drvdata spinlock's type to raw_spinlock_t coresight-replicator: change replicator_drvdata spinlock's type to raw_spinlock_t coresight-funnel: change funnel_drvdata spinlock's type to raw_spinlock_t coresight-etb10: change etb_drvdata spinlock's type to raw_spinlock_t coresight-cti: change cti_drvdata spinlock's type to raw_spinlock_t coresight: change coresight_trace_id_map's lock type to raw_spinlock_t coresight-etm4x: change etmv4_drvdata spinlock type to raw_spinlock_t coresight: change coresight_device lock type to raw_spinlock_t coresight: add verification process for coresight_etm_get_trace_id Coresight: Add Coresight TMC Control Unit driver dt-bindings: arm: Add Coresight TMC Control Unit hardware Coresight: Change functions to accept the coresight_path Coresight: Change to read the trace ID from coresight_path Coresight: Allocate trace ID after building the path Coresight: Introduce a new struct coresight_path Coresight: Use coresight_etm_get_trace_id() in traceid_show() ...
2025-03-20ASoC: wm8904: get platform data from DTErnest Van Hoecke
Read in optional codec-specific properties from the device tree. The platform_data structure is not populated when using device trees. This change parses optional dts properties to populate it. - wlf,in1l-as-dmicdat1 - wlf,in1r-as-dmicdat2 - wlf,gpio-cfg - wlf,micbias-cfg - wlf,drc-cfg-regs - wlf,drc-cfg-names - wlf,retune-mobile-cfg-regs - wlf,retune-mobile-cfg-names - wlf,retune-mobile-cfg-hz Datasheet: https://statics.cirrus.com/pubs/proDatasheet/WM8904_Rev4.1.pdf Signed-off-by: Ernest Van Hoecke <ernest.vanhoecke@toradex.com> Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com> Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://patch.msgid.link/20250319142059.46692-5-francesco@dolcini.it Signed-off-by: Mark Brown <broonie@kernel.org>
2025-03-20of: Add of_property_read_u16_indexErnest Van Hoecke
There is an of_property_read_u32_index and of_property_read_u64_index. This patch adds a similar helper for u16. Signed-off-by: Ernest Van Hoecke <ernest.vanhoecke@toradex.com> Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://patch.msgid.link/20250319142059.46692-2-francesco@dolcini.it Signed-off-by: Mark Brown <broonie@kernel.org>
2025-03-20Merge branch 'slab/for-6.15/kfree_rcu_tiny' into slab/for-nextVlastimil Babka
Merge the slab feature branch kfree_rcu_tiny for 6.15: - Move the TINY_RCU kvfree_rcu() implementation from RCU to SLAB subsystem and cleanup its integration.
2025-03-20mptcp: sysctl: add available_path_managersGeliang Tang
Similarly to net.mptcp.available_schedulers, this patch adds a new one net.mptcp.available_path_managers to list the available path managers. Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250313-net-next-mptcp-pm-ops-intro-v1-11-f4e4a88efc50@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-03-20mptcp: pm: define struct mptcp_pm_opsGeliang Tang
In order to allow users to develop their own BPF-based path manager, this patch defines a struct ops "mptcp_pm_ops" for an MPTCP path manager, which contains a set of interfaces. Currently only init() and release() interfaces are included, subsequent patches will add others step by step. Add a set of functions to register, unregister, find and validate a given path manager struct ops. "list" is used to add this path manager to mptcp_pm_list list when it is registered. "name" is used to identify this path manager. mptcp_pm_find() uses "name" to find a path manager on the list. mptcp_pm_unregister is not used in this set, but will be invoked in .unreg of struct bpf_struct_ops. mptcp_pm_validate() will be invoked in .validate of struct bpf_struct_ops. That's why they are exported. Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250313-net-next-mptcp-pm-ops-intro-v1-6-f4e4a88efc50@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-03-20cpuidle, sched: Use smp_mb__after_atomic() in current_clr_polling()Yujun Dong
In architectures that use the polling bit, current_clr_polling() employs smp_mb() to ensure that the clearing of the polling bit is visible to other cores before checking TIF_NEED_RESCHED. However, smp_mb() can be costly. Given that clear_bit() is an atomic operation, replacing smp_mb() with smp_mb__after_atomic() is appropriate. Many architectures implement smp_mb__after_atomic() as a lighter-weight barrier compared to smp_mb(), leading to performance improvements. For instance, on x86, smp_mb__after_atomic() is a no-op. This change eliminates a smp_mb() instruction in the cpuidle wake-up path, saving several CPU cycles and thereby reducing wake-up latency. Architectures that do not use the polling bit will retain the original smp_mb() behavior to ensure that existing dependencies remain unaffected. Signed-off-by: Yujun Dong <yujundong@pascal-lab.net> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20241230141624.155356-1-yujundong@pascal-lab.net
2025-03-20fs: reduce work in fdget_pos()Mateusz Guzik
1. predict the file was found 2. explicitly compare the ref to "one", ignoring the dead zone The latter arguably improves the behavior to begin with. Suppose the count turned bad -- the previously used ref routine is going to check for it and return 0, indicating the count does not necessitate taking ->f_pos_lock. But there very well may be several users. i.e. not paying for special-casing the dead zone improves semantics. While here spell out each condition in a dedicated if statement. This has no effect on generated code. Sizes are as follows (in bytes; gcc 13, x86-64): stock: 321 likely(): 298 likely()+ref: 280 Signed-off-by: Mateusz Guzik <mjguzik@gmail.com> Link: https://lore.kernel.org/r/20250319215801.1870660-1-mjguzik@gmail.com Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-03-20Merge branches 'apple/dart', 'arm/smmu/updates', 'arm/smmu/bindings', ↵Joerg Roedel
'rockchip', 's390', 'core', 'intel/vt-d' and 'amd/amd-vi' into next
2025-03-20net: phy: Support speed selection for PHY loopbackGerhard Engleder
phy_loopback() leaves it to the PHY driver to select the speed of the loopback mode. Thus, the speed of the loopback mode depends on the PHY driver in use. Add support for speed selection to phy_loopback() to enable loopback with defined speeds. Ensure that link up is signaled if speed changes as speed is not allowed to change during link up. Link down and up is necessary for a new speed. Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com> Link: https://patch.msgid.link/20250312203010.47429-3-gerhard@engleder-embedded.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-03-20net: phy: Allow loopback speed selection for PHY driversGerhard Engleder
PHY drivers support loopback mode, but it is not possible to select the speed of the loopback mode. The speed is chosen by the set_loopback() operation of the PHY driver. Same is valid for genphy_loopback(). There are PHYs that support loopback with different speeds. Extend set_loopback() to make loopback speed selection possible. Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://patch.msgid.link/20250312203010.47429-2-gerhard@engleder-embedded.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-03-19Merge tag 'qcom-drivers-for-6.15' of ↵Arnd Bergmann
https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into soc/drivers Qualcomm driver updates for v6.15 Improve the client interface for the Qualcomm ICE driver to avoid leaking references, including fixing the client drivers to call the new function. Adopt str_on_off() helper in AOSS driver and mark non-global servreg QMI element info array in the PDR driver static. * tag 'qcom-drivers-for-6.15' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux: soc: qcom: Do not expose internal servreg_location_entry_ei array soc: qcom: ice: make of_qcom_ice_get() static scsi: ufs: qcom: fix dev reference leaked through of_qcom_ice_get mmc: sdhci-msm: fix dev reference leaked through of_qcom_ice_get soc: qcom: ice: introduce devm_of_qcom_ice_get dt-bindings: soc: qcom: qcom,pmic-glink: Document SM8750 compatible soc: qcom: Use str_enable_disable-like helpers Link: https://lore.kernel.org/r/20250317210158.2025380-1-andersson@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2025-03-19Merge branch 'kvm-arm64/pmu-fixes' into kvmarm/nextOliver Upton
* kvm-arm64/pmu-fixes: : vPMU fixes for 6.15 courtesy of Akihiko Odaki : : Various fixes to KVM's vPMU implementation, notably ensuring : userspace-directed changes to the PMCs are reflected in the backing perf : events. KVM: arm64: PMU: Reload when resetting KVM: arm64: PMU: Reload when user modifies registers KVM: arm64: PMU: Fix SET_ONE_REG for vPMC regs KVM: arm64: PMU: Assume PMU presence in pmu-emul.c KVM: arm64: PMU: Set raw values from user to PM{C,I}NTEN{SET,CLR}, PMOVS{SET,CLR} Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2025-03-19Merge branch 'kvm-arm64/writable-midr' into kvmarm/nextOliver Upton
* kvm-arm64/writable-midr: : Writable implementation ID registers, courtesy of Sebastian Ott : : Introduce a new capability that allows userspace to set the : ID registers that identify a CPU implementation: MIDR_EL1, REVIDR_EL1, : and AIDR_EL1. Also plug a hole in KVM's trap configuration where : SMIDR_EL1 was readable at EL1, despite the fact that KVM does not : support SME. KVM: arm64: Fix documentation for KVM_CAP_ARM_WRITABLE_IMP_ID_REGS KVM: arm64: Copy MIDR_EL1 into hyp VM when it is writable KVM: arm64: Copy guest CTR_EL0 into hyp VM KVM: selftests: arm64: Test writes to MIDR,REVIDR,AIDR KVM: arm64: Allow userspace to change the implementation ID registers KVM: arm64: Load VPIDR_EL2 with the VM's MIDR_EL1 value KVM: arm64: Maintain per-VM copy of implementation ID regs KVM: arm64: Set HCR_EL2.TID1 unconditionally Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2025-03-19Merge branch 'kvm-arm64/pmuv3-asahi' into kvmarm/nextOliver Upton
* kvm-arm64/pmuv3-asahi: : Support PMUv3 for KVM guests on Apple silicon : : Take advantage of some IMPLEMENTATION DEFINED traps available on Apple : parts to trap-and-emulate the PMUv3 registers on behalf of a KVM guest. : Constrain the vPMU to a cycle counter and single event counter, as the : Apple PMU has events that cannot be counted on every counter. : : There is a small new interface between the ARM PMU driver and KVM, where : the PMU driver owns the PMUv3 -> hardware event mappings. arm64: Enable IMP DEF PMUv3 traps on Apple M* KVM: arm64: Provide 1 event counter on IMPDEF hardware drivers/perf: apple_m1: Provide helper for mapping PMUv3 events KVM: arm64: Remap PMUv3 events onto hardware KVM: arm64: Advertise PMUv3 if IMPDEF traps are present KVM: arm64: Compute synthetic sysreg ESR for Apple PMUv3 traps KVM: arm64: Move PMUVer filtering into KVM code KVM: arm64: Use guard() to cleanup usage of arm_pmus_lock KVM: arm64: Drop kvm_arm_pmu_available static key KVM: arm64: Use a cpucap to determine if system supports FEAT_PMUv3 KVM: arm64: Always support SW_INCR PMU event KVM: arm64: Compute PMCEID from arm_pmu's event bitmaps drivers/perf: apple_m1: Support host/guest event filtering drivers/perf: apple_m1: Refactor event select/filter configuration Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2025-03-19Merge branch 'kvm-arm64/pv-cpuid' into kvmarm/nextOliver Upton
* kvm-arm64/pv-cpuid: : Paravirtualized implementation ID, courtesy of Shameer Kolothum : : Big-little has historically been a pain in the ass to virtualize. The : implementation ID (MIDR, REVIDR, AIDR) of a vCPU can change at the whim : of vCPU scheduling. This can be particularly annoying when the guest : needs to know the underlying implementation to mitigate errata. : : "Hyperscalers" face a similar scheduling problem, where VMs may freely : migrate between hosts in a pool of heterogenous hardware. And yes, our : server-class friends are equally riddled with errata too. : : In absence of an architected solution to this wart on the ecosystem, : introduce support for paravirtualizing the implementation exposed : to a VM, allowing the VMM to describe the pool of implementations that a : VM may be exposed to due to scheduling/migration. : : Userspace is expected to intercept and handle these hypercalls using the : SMCCC filter UAPI, should it choose to do so. smccc: kvm_guest: Fix kernel builds for 32 bit arm KVM: selftests: Add test for KVM_REG_ARM_VENDOR_HYP_BMAP_2 smccc/kvm_guest: Enable errata based on implementation CPUs arm64: Make  _midr_in_range_list() an exported function KVM: arm64: Introduce KVM_REG_ARM_VENDOR_HYP_BMAP_2 KVM: arm64: Specify hypercall ABI for retrieving target implementations arm64: Modify _midr_range() functions to read MIDR/REVIDR internally Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2025-03-19Merge branch 'kvm-arm64/nv-vgic' into kvmarm/nextOliver Upton
* kvm-arm64/nv-vgic: : NV VGICv3 support, courtesy of Marc Zyngier : : Support for emulating the GIC hypervisor controls and managing shadow : VGICv3 state for the L1 hypervisor. As part of it, bring in support for : taking IRQs to the L1 and UAPI to manage the VGIC maintenance interrupt. KVM: arm64: nv: Fail KVM init if asking for NV without GICv3 KVM: arm64: nv: Allow userland to set VGIC maintenance IRQ KVM: arm64: nv: Fold GICv3 host trapping requirements into guest setup KVM: arm64: nv: Propagate used_lrs between L1 and L0 contexts KVM: arm64: nv: Request vPE doorbell upon nested ERET to L2 KVM: arm64: nv: Respect virtual HCR_EL2.TWx setting KVM: arm64: nv: Add Maintenance Interrupt emulation KVM: arm64: nv: Handle L2->L1 transition on interrupt injection KVM: arm64: nv: Nested GICv3 emulation KVM: arm64: nv: Sanitise ICH_HCR_EL2 accesses KVM: arm64: nv: Plumb handling of GICv3 EL2 accesses KVM: arm64: nv: Add ICH_*_EL2 registers to vpcu_sysreg KVM: arm64: nv: Load timer before the GIC arm64: sysreg: Add layout for ICH_MISR_EL2 arm64: sysreg: Add layout for ICH_VTR_EL2 arm64: sysreg: Add layout for ICH_HCR_EL2 Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2025-03-19Merge tag 'samsung-drivers-6.15' of ↵Arnd Bergmann
https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into soc/drivers Samsung SoC drivers for v6.15 1. Add support for Exynos USI v1 serial engines. Drivers already supported newer IP blocks - USI v2 - present in Exynos850 and newer. A bit older ARM64 designs, like Exynos8895 use older USI v1 block. 2. Add Exynos ACPM (Alive Clock and Power Manager) protocol driver for Google GS101 SoC. ACPM protocol allows communication between the power management firmware and other embedded processors. 3. Exynos2200: Add PMU, ChipID and SYSREG Devicetree bindings. 4. Exynos7870: Add PMU and ChipID Devicetree bindings. 5. Various cleanups. * tag 'samsung-drivers-6.15' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux: dt-bindings: soc: samsung: exynos-usi: Drop unnecessary status from example soc: samsung: include linux/array_size.h where needed soc: samsung: exynos-chipid: add support for exynos7870 dt-bindings: soc: samsung: exynos-pmu: add exynos7870-pmu compatible dt-bindings: hwinfo: samsung,exynos-chipid: add exynos7870-chipid compatible soc: samsung: exynos-chipid: add exynos2200 SoC support dt-bindings: hwinfo: samsung,exynos-chipid: add exynos2200 compatible dt-bindings: soc: samsung: exynos-pmu: add exynos2200 compatible dt-bindings: soc: samsung: exynos-sysreg: add sysreg compatibles for exynos2200 firmware: Exynos ACPM: Fix spelling mistake "Faile" -> "Failed" MAINTAINERS: add entry for the Samsung Exynos ACPM mailbox protocol firmware: add Exynos ACPM protocol driver dt-bindings: firmware: add google,gs101-acpm-ipc soc: samsung: usi: implement support for USIv1 and exynos8895 soc: samsung: usi: add a routine for unconfiguring the ip dt-bindings: soc: samsung: usi: add USIv1 and samsung,exynos8895-usi soc: samsung: Use syscon_regmap_lookup_by_phandle_args Link: https://lore.kernel.org/r/20250309185601.10616-1-krzysztof.kozlowski@linaro.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2025-03-19Merge tag 'tegra-for-6.15-firmware' of ↵Arnd Bergmann
https://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into soc/drivers firmware: tegra: Changes for v6.15-rc1 Not much to this except for a simple typofix. * tag 'tegra-for-6.15-firmware' of https://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux: firmware: tegra: bpmp: Fix typo in bpmp-abi.h Link: https://lore.kernel.org/r/20250307162332.3451523-2-thierry.reding@gmail.com Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2025-03-19sched/debug: Make CONFIG_SCHED_DEBUG functionality unconditionalIngo Molnar
All the big Linux distros enable CONFIG_SCHED_DEBUG, because the various features it provides help not just with kernel development, but with system administration and user-space software development as well. Reflect this reality and enable this functionality unconditionally. Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Shrikanth Hegde <sshegde@linux.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Juri Lelli <juri.lelli@redhat.com> Cc: Vincent Guittot <vincent.guittot@linaro.org> Cc: Dietmar Eggemann <dietmar.eggemann@arm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ben Segall <bsegall@google.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Valentin Schneider <vschneid@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/20250317104257.3496611-4-mingo@kernel.org
2025-03-19Merge tag 'v6.15-rockchip-dts64-2' of ↵Arnd Bergmann
https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into soc/dt New peripheral the sdhci controller on rk3528. Enablement of hdmi and hdmi audio on a number of additional boards. Better handling for scmi shared memory on rk3568 and a fix for the used SCMI clock ids on rk3576. As well as some fixes that were a bit late for trying to stuff them into 6.14 at this late stage of the cycle. * tag 'v6.15-rockchip-dts64-2' of https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip: arm64: dts: rockchip: remove ethm0_clk0_25m_out from Sige5 gmac0 arm64: dts: rockchip: Fix PWM pinctrl names arm64: dts: rockchip: fix RK3576 SCMI clock IDs dt-bindings: clock: rk3576: add SCMI clocks arm64: dts: rockchip: Fix pcie reset gpio on Orange Pi 5 Max arm64: dts: rockchip: Enable HDMI audio output for ArmSoM Sige7 arm64: dts: rockchip: Enable onboard eMMC on Radxa E20C arm64: dts: rockchip: Add SDHCI controller for RK3528 arm64: dts: rockchip: Remove bluetooth node from rock-3a arm64: dts: rockchip: Move rk356x scmi SHMEM to reserved memory arm64: dts: rockchip: Add AP6275P wireless support to ArmSoM Sige7 arm64: dts: rockchip: Enable HDMI audio outputs for Orange Pi 5 Plus arm64: dts: rockchip: Enable HDMI1 on Orange Pi 5 Plus arm64: dts: rockchip: Enable HDMI audio outputs for Orange Pi 5 Max arm64: dts: rockchip: Enable HDMI0 audio output for Orange Pi 5/5B Link: https://lore.kernel.org/r/23866869.6Emhk5qWAg@phil Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2025-03-19Merge tag 'zynqmp-dt-for-6.14' of https://github.com/Xilinx/linux-xlnx into ↵Arnd Bergmann
soc/dt arm64: ZynqMP DT changes for 6.15 - Align clock nodes with DT binding - Add the first VN-X Versal NET board - Move constants out of DT bindings * tag 'zynqmp-dt-for-6.14' of https://github.com/Xilinx/linux-xlnx: dt-bindings: xilinx: Deprecate header with firmware constants arm64: zynqmp: Use DT header for firmware constants arm64: versal-net: Add description for b2197-00 revA board dt-bindings: soc: Add new VN-X board description based on Versal NET arm64: zynqmp: add clock-output-names property in clock nodes Link: https://lore.kernel.org/r/CAHTX3d+u1VmxP4vm0peQS-ST7o0BuCpKUPRVCSLMfAAb=eV3Xg@mail.gmail.com Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2025-03-19Merge tag 'for-net-2025-03-14' of ↵Paolo Abeni
git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth Luiz Augusto von Dentz says: ==================== bluetooth pull request for net: - hci_event: Fix connection regression between LE and non-LE adapters - Fix error code in chan_alloc_skb_cb() * tag 'for-net-2025-03-14' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth: Bluetooth: hci_event: Fix connection regression between LE and non-LE adapters Bluetooth: Fix error code in chan_alloc_skb_cb() ==================== Link: https://patch.msgid.link/20250314163847.110069-1-luiz.dentz@gmail.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
generated by cgit (git 2.34.1) at 2025-09-12 23:10:32 +0000