Linux kernel stable tree (mirror) https://git.radix-linux.su/kernel/linux.git/atom?h=master 2026-04-17T22:52:58+00:00 2026-04-17T22:52:58+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-04-17T22:52:58+00:00 urn:sha1:12bffaef28820e0b94c644c75708195c61af78f7 Pull CXL (Compute Express Link) updates from Dave Jiang: "The significant change of interest is the handling of soft reserved memory conflict between CXL and HMEM. In essence CXL will be the first to claim the soft reserved memory ranges that belongs to CXL and attempt to enumerate them with best effort. If CXL is not able to enumerate the ranges it will punt them to HMEM. There are also MAINTAINERS email changes from Dan Williams and Jonathan Cameron" * tag 'cxl-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (37 commits) MAINTAINERS: Update Jonathan Cameron's email address cxl/hdm: Add support for 32 switch decoders MAINTAINERS: Update address for Dan Williams tools/testing/cxl: Enable replay of user regions as auto regions cxl/region: Add a region sysfs interface for region lock status tools/testing/cxl: Test dax_hmem takeover of CXL regions tools/testing/cxl: Simulate auto-assembly failure dax/hmem: Parent dax_hmem devices dax/hmem: Fix singleton confusion between dax_hmem_work and hmem devices dax/hmem: Reduce visibility of dax_cxl coordination symbols cxl/region: Constify cxl_region_resource_contains() cxl/region: Limit visibility of cxl_region_contains_resource() dax/cxl: Fix HMEM dependencies cxl/region: Fix use-after-free from auto assembly failure cxl/core: Check existence of cxl_memdev_state in poison test cxl/core: use cleanup.h for devm_cxl_add_dax_region cxl/core/region: move dax region device logic into region_dax.c cxl/core/region: move pmem region driver logic into region_pmem.c dax/hmem, cxl: Defer and resolve Soft Reserved ownership cxl/region: Add helper to check Soft Reserved containment by CXL regions ... 2026-04-14T23:48:56+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-04-14T23:48:56+00:00 urn:sha1:c43267e6794a36013fd495a4d81bf7f748fe4615 Pull arm64 updates from Catalin Marinas: "The biggest changes are MPAM enablement in drivers/resctrl and new PMU support under drivers/perf. On the core side, FEAT_LSUI lets futex atomic operations with EL0 permissions, avoiding PAN toggling. The rest is mostly TLB invalidation refactoring, further generic entry work, sysreg updates and a few fixes. Core features: - Add support for FEAT_LSUI, allowing futex atomic operations without toggling Privileged Access Never (PAN) - Further refactor the arm64 exception handling code towards the generic entry infrastructure - Optimise __READ_ONCE() with CONFIG_LTO=y and allow alias analysis through it Memory management: - Refactor the arm64 TLB invalidation API and implementation for better control over barrier placement and level-hinted invalidation - Enable batched TLB flushes during memory hot-unplug - Fix rodata=full block mapping support for realm guests (when BBML2_NOABORT is available) Perf and PMU: - Add support for a whole bunch of system PMUs featured in NVIDIA's Tegra410 SoC (cspmu extensions for the fabric and PCIe, new drivers for CPU/C2C memory latency PMUs) - Clean up iomem resource handling in the Arm CMN driver - Fix signedness handling of AA64DFR0.{PMUVer,PerfMon} MPAM (Memory Partitioning And Monitoring): - Add architecture context-switch and hiding of the feature from KVM - Add interface to allow MPAM to be exposed to user-space using resctrl - Add errata workaround for some existing platforms - Add documentation for using MPAM and what shape of platforms can use resctrl Miscellaneous: - Check DAIF (and PMR, where relevant) at task-switch time - Skip TFSR_EL1 checks and barriers in synchronous MTE tag check mode (only relevant to asynchronous or asymmetric tag check modes) - Remove a duplicate allocation in the kexec code - Remove redundant save/restore of SCS SP on entry to/from EL0 - Generate the KERNEL_HWCAP_ definitions from the arm64 hwcap descriptions - Add kselftest coverage for cmpbr_sigill() - Update sysreg definitions" * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (109 commits) arm64: rsi: use linear-map alias for realm config buffer arm64: Kconfig: fix duplicate word in CMDLINE help text arm64: mte: Skip TFSR_EL1 checks and barriers in synchronous tag check mode arm64/sysreg: Update ID_AA64SMFR0_EL1 description to DDI0601 2025-12 arm64/sysreg: Update ID_AA64ZFR0_EL1 description to DDI0601 2025-12 arm64/sysreg: Update ID_AA64FPFR0_EL1 description to DDI0601 2025-12 arm64/sysreg: Update ID_AA64ISAR2_EL1 description to DDI0601 2025-12 arm64/sysreg: Update ID_AA64ISAR0_EL1 description to DDI0601 2025-12 arm64/hwcap: Generate the KERNEL_HWCAP_ definitions for the hwcaps arm64: kexec: Remove duplicate allocation for trans_pgd ACPI: AGDI: fix missing newline in error message arm64: Check DAIF (and PMR) at task-switch time arm64: entry: Use split preemption logic arm64: entry: Use irqentry_{enter_from,exit_to}_kernel_mode() arm64: entry: Consistently prefix arm64-specific wrappers arm64: entry: Don't preempt with SError or Debug masked entry: Split preemption from irqentry_exit_to_kernel_mode() entry: Split kernel mode logic from irqentry_{enter,exit}() entry: Move irqentry_enter() prototype later entry: Remove local_irq_{enable,disable}_exit_to_user() ... 2026-04-14T19:36:25+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-04-14T19:36:25+00:00 urn:sha1:7393febcb1b2082c0484952729cbebfe4dc508d5 Pull locking updates from Ingo Molnar: "Mutexes: - Add killable flavor to guard definitions (Davidlohr Bueso) - Remove the list_head from struct mutex (Matthew Wilcox) - Rename mutex_init_lockep() (Davidlohr Bueso) rwsems: - Remove the list_head from struct rw_semaphore and replace it with a single pointer (Matthew Wilcox) - Fix logic error in rwsem_del_waiter() (Andrei Vagin) Semaphores: - Remove the list_head from struct semaphore (Matthew Wilcox) Jump labels: - Use ATOMIC_INIT() for initialization of .enabled (Thomas Weißschuh) - Remove workaround for old compilers in initializations (Thomas Weißschuh) Lock context analysis changes and improvements: - Add context analysis for rwsems (Peter Zijlstra) - Fix rwlock and spinlock lock context annotations (Bart Van Assche) - Fix rwlock support in <linux/spinlock_up.h> (Bart Van Assche) - Add lock context annotations in the spinlock implementation (Bart Van Assche) - signal: Fix the lock_task_sighand() annotation (Bart Van Assche) - ww-mutex: Fix the ww_acquire_ctx function annotations (Bart Van Assche) - Add lock context support in do_raw_{read,write}_trylock() (Bart Van Assche) - arm64, compiler-context-analysis: Permit alias analysis through __READ_ONCE() with CONFIG_LTO=y (Marco Elver) - Add __cond_releases() (Peter Zijlstra) - Add context analysis for mutexes (Peter Zijlstra) - Add context analysis for rtmutexes (Peter Zijlstra) - Convert futexes to compiler context analysis (Peter Zijlstra) Rust integration updates: - Add atomic fetch_sub() implementation (Andreas Hindborg) - Refactor various rust_helper_ methods for expansion (Boqun Feng) - Add Atomic<*{mut,const} T> support (Boqun Feng) - Add atomic operation helpers over raw pointers (Boqun Feng) - Add performance-optimal Flag type for atomic booleans, to avoid slow byte-sized RMWs on architectures that don't support them. (FUJITA Tomonori) - Misc cleanups and fixes (Andreas Hindborg, Boqun Feng, FUJITA Tomonori) LTO support updates: - arm64: Optimize __READ_ONCE() with CONFIG_LTO=y (Marco Elver) - compiler: Simplify generic RELOC_HIDE() (Marco Elver) Miscellaneous fixes and cleanups by Peter Zijlstra, Randy Dunlap, Thomas Weißschuh, Davidlohr Bueso and Mikhail Gavrilov" * tag 'locking-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (39 commits) compiler: Simplify generic RELOC_HIDE() locking: Add lock context annotations in the spinlock implementation locking: Add lock context support in do_raw_{read,write}_trylock() locking: Fix rwlock support in <linux/spinlock_up.h> lockdep: Raise default stack trace limits when KASAN is enabled cleanup: Optimize guards jump_label: remove workaround for old compilers in initializations jump_label: use ATOMIC_INIT() for initialization of .enabled futex: Convert to compiler context analysis locking/rwsem: Fix logic error in rwsem_del_waiter() locking/rwsem: Add context analysis locking/rtmutex: Add context analysis locking/mutex: Add context analysis compiler-context-analysys: Add __cond_releases() locking/mutex: Remove the list_head from struct mutex locking/semaphore: Remove the list_head from struct semaphore locking/rwsem: Remove the list_head from struct rw_semaphore rust: atomic: Update a safety comment in impl of `fetch_add()` rust: sync: atomic: Update documentation for `fetch_add()` rust: sync: atomic: Add fetch_sub() ... 2026-04-14T02:47:52+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-04-14T02:47:52+00:00 urn:sha1:d7c8087a9cd8979d70edfe7c7feda9423feae3ab Pull power management updates from Rafael Wysocki: "Once again, cpufreq is the most active development area, mostly because of the new feature additions and documentation updates in the amd-pstate driver, but there are also changes in the cpufreq core related to boost support and other assorted updates elsewhere. Next up are power capping changes due to the major cleanup of the Intel RAPL driver. On the cpuidle front, a new C-states table for Intel Panther Lake is added to the intel_idle driver, the stopped tick handling in the menu and teo governors is updated, and there are a couple of cleanups. Apart from the above, support for Tegra114 is added to devfreq and there are assorted cleanups of that code, there are also two updates of the operating performance points (OPP) library, two minor updates related to hibernation, and cpupower utility man pages updates and cleanups. Specifics: - Update qcom-hw DT bindings to include Eliza hardware (Abel Vesa) - Update cpufreq-dt-platdev blocklist (Faruque Ansari) - Minor updates to driver and dt-bindings for Tegra (Thierry Reding, Rosen Penev) - Add MAINTAINERS entry for CPPC driver (Viresh Kumar) - Add support for new features: CPPC performance priority, Dynamic EPP, Raw EPP, and new unit tests for them to amd-pstate (Gautham Shenoy, Mario Limonciello) - Fix sysfs files being present when HW missing and broken/outdated documentation in the amd-pstate driver (Ninad Naik, Gautham Shenoy) - Pass the policy to cpufreq_driver->adjust_perf() to avoid using cpufreq_cpu_get() in the .adjust_perf() callback in amd-pstate which leads to a scheduling-while-atomic bug (K Prateek Nayak) - Clean up dead code in Kconfig for cpufreq (Julian Braha) - Remove max_freq_req update for pre-existing cpufreq policy and add a boost_freq_req QoS request to save the boost constraint instead of overwriting the last scaling_max_freq constraint (Pierre Gondois) - Embed cpufreq QoS freq_req objects in cpufreq policy so they all are allocated in one go along with the policy to simplify lifetime rules and avoid error handling issues (Viresh Kumar) - Use DMI max speed when CPPC is unavailable in the acpi-cpufreq scaling driver (Henry Tseng) - Switch policy_is_shared() in cpufreq to using cpumask_nth() instead of cpumask_weight() because the former is more efficient (Yury Norov) - Use sysfs_emit() in sysfs show functions for cpufreq governor attributes (Thorsten Blum) - Update intel_pstate to stop returning an error when "off" is written to its status sysfs attribute while the driver is already off (Fabio De Francesco) - Include current frequency in the debug message printed by __cpufreq_driver_target() (Pengjie Zhang) - Refine stopped tick handling in the menu cpuidle governor and rearrange stopped tick handling in the teo cpuidle governor (Rafael Wysocki) - Add Panther Lake C-states table to the intel_idle driver (Artem Bityutskiy) - Clean up dead dependencies on CPU_IDLE in Kconfig (Julian Braha) - Simplify cpuidle_register_device() with guard() (Huisong Li) - Use performance level if available to distinguish between rates in OPP debugfs (Manivannan Sadhasivam) - Fix scoped_guard in dev_pm_opp_xlate_required_opp() (Viresh Kumar) - Return -ENODATA if the snapshot image is not loaded (Alberto Garcia) - Remove inclusion of crypto/hash.h from hibernate_64.c on x86 (Eric Biggers) - Clean up and rearrange the intel_rapl power capping driver to make the respective interface drivers (TPMI, MSR, and MMOI) hold their own settings and primitives and consolidate PL4 and PMU support flags into rapl_defaults (Kuppuswamy Sathyanarayanan) - Correct kernel-doc function parameter names in the power capping core code (Randy Dunlap) - Remove unneeded casting for HZ_PER_KHZ in devfreq (Andy Shevchenko) - Use _visible attribute to replace create/remove_sysfs_files() in devfreq (Pengjie Zhang) - Add Tegra114 support to activity monitor device in tegra30-devfreq as a preparation to upcoming EMC controller support (Svyatoslav Ryhel) - Fix mistakes in cpupower man pages, add the boost and epp options to the cpupower-frequency-info man page, and add the perf-bias option to the cpupower-info man page (Roberto Ricci) - Remove unnecessary extern declarations from getopt.h in arguments parsing functions in cpufreq-set, cpuidle-info, cpuidle-set, cpupower-info, and cpupower-set utilities (Kaushlendra Kumar)" * tag 'pm-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (74 commits) cpufreq/amd-pstate: Add POWER_SUPPLY select for dynamic EPP cpupower: remove extern declarations in cmd functions cpuidle: Simplify cpuidle_register_device() with guard() PM / devfreq: tegra30-devfreq: add support for Tegra114 PM / devfreq: use _visible attribute to replace create/remove_sysfs_files() PM / devfreq: Remove unneeded casting for HZ_PER_KHZ MAINTAINERS: amd-pstate: Step down as maintainer, add Prateek as reviewer cpufreq: Pass the policy to cpufreq_driver->adjust_perf() cpufreq/amd-pstate: Pass the policy to amd_pstate_update() cpufreq/amd-pstate-ut: Add a unit test for raw EPP cpufreq/amd-pstate: Add support for raw EPP writes cpufreq/amd-pstate: Add support for platform profile class cpufreq/amd-pstate: add kernel command line to override dynamic epp cpufreq/amd-pstate: Add dynamic energy performance preference Documentation: amd-pstate: fix dead links in the reference section cpufreq/amd-pstate: Cache the max frequency in cpudata Documentation/amd-pstate: Add documentation for amd_pstate_floor_{freq,count} Documentation/amd-pstate: List amd_pstate_prefcore_ranking sysfs file Documentation/amd-pstate: List amd_pstate_hw_prefcore sysfs file amd-pstate-ut: Add a testcase to validate the visibility of driver attributes ... 2026-04-10T10:05:32+00:00 Rafael J. Wysocki rafael.j.wysocki@intel.com 2026-04-10T10:05:32+00:00 urn:sha1:83e990310dfc92be7cf84c9008137d3275363d94 Merge cpufreq updates for 7.1-rc1: - Update qcom-hw DT bindings to include Eliza hardware (Abel Vesa) - Update cpufreq-dt-platdev blocklist (Faruque Ansari) - Minor updates to driver and dt-bindings for Tegra (Thierry Reding, Rosen Penev) - Add MAINTAINERS entry for CPPC driver (Viresh Kumar) - Add support for new features: CPPC performance priority, Dynamic EPP, Raw EPP, and new unit tests for them to amd-pstate (Gautham Shenoy, Mario Limonciello) - Fix sysfs files being present when HW missing and broken/outdated documentation in the amd-pstate driver (Ninad Naik, Gautham Shenoy) - Pass the policy to cpufreq_driver->adjust_perf() to avoid using cpufreq_cpu_get() in the .adjust_perf() callback in amd-pstate which leads to a scheduling-while-atomic bug (K Prateek Nayak) - Clean up dead code in Kconfig for cpufreq (Julian Braha) - Remove max_freq_req update for pre-existing cpufreq policy and add a boost_freq_req QoS request to save the boost constraint instead of overwriting the last scaling_max_freq constraint (Pierre Gondois) - Embed cpufreq QoS freq_req objects in cpufreq policy so they all are allocated in one go along with the policy to simplify lifetime rules and avoid error handling issues (Viresh Kumar) - Use DMI max speed when CPPC is unavailable in the acpi-cpufreq scaling driver (Henry Tseng) - Switch policy_is_shared() in cpufreq to using cpumask_nth() instead of cpumask_weight() because the former is more efficient (Yury Norov) - Use sysfs_emit() in sysfs show functions for cpufreq governor attributes (Thorsten Blum) - Update intel_pstate to stop returning an error when "off" is written to its status sysfs attribute while the driver is already off (Fabio De Francesco) - Include current frequency in the debug message printed by __cpufreq_driver_target() (Pengjie Zhang) * pm-cpufreq: (38 commits) cpufreq/amd-pstate: Add POWER_SUPPLY select for dynamic EPP MAINTAINERS: amd-pstate: Step down as maintainer, add Prateek as reviewer cpufreq: Pass the policy to cpufreq_driver->adjust_perf() cpufreq/amd-pstate: Pass the policy to amd_pstate_update() cpufreq/amd-pstate-ut: Add a unit test for raw EPP cpufreq/amd-pstate: Add support for raw EPP writes cpufreq/amd-pstate: Add support for platform profile class cpufreq/amd-pstate: add kernel command line to override dynamic epp cpufreq/amd-pstate: Add dynamic energy performance preference Documentation: amd-pstate: fix dead links in the reference section cpufreq/amd-pstate: Cache the max frequency in cpudata Documentation/amd-pstate: Add documentation for amd_pstate_floor_{freq,count} Documentation/amd-pstate: List amd_pstate_prefcore_ranking sysfs file Documentation/amd-pstate: List amd_pstate_hw_prefcore sysfs file amd-pstate-ut: Add a testcase to validate the visibility of driver attributes amd-pstate-ut: Add module parameter to select testcases amd-pstate: Introduce a tracepoint trace_amd_pstate_cppc_req2() amd-pstate: Add sysfs support for floor_freq and floor_count amd-pstate: Add support for CPPC_REQ2 and FLOOR_PERF x86/cpufeatures: Add AMD CPPC Performance Priority feature. ... 2026-04-09T20:01:19+00:00 Rafael J. Wysocki rafael.j.wysocki@intel.com 2026-04-09T20:01:19+00:00 urn:sha1:8e937866b425248fa375b2138c19c117a87c6be0 Merge ACPI APEI updates for 7.1-rc1: - Add devm_ghes_register_vendor_record_notifier(), use it in the PCI hisi driver, and Add NVIDIA vendor CPER record handler (Kai-Heng Feng) * acpi-apei: ACPI: APEI: GHES: Add NVIDIA vendor CPER record handler PCI: hisi: Use devm_ghes_register_vendor_record_notifier() ACPI: APEI: GHES: Add devm_ghes_register_vendor_record_notifier() 2026-04-09T19:54:15+00:00 Rafael J. Wysocki rafael.j.wysocki@intel.com 2026-04-09T19:54:15+00:00 urn:sha1:2fb9ec386fa1a842701a5ba4bb44f1e544d9bfc4 Merge ACPI core driver core driver updates and assorted driver updates related to ACPI support for 7.1-rc1: - Clean up the ACPI AC and ACPI PAD (processor aggregator device) drivers (Rafael Wysocki) - Rework checking for duplicate video bus devices and consolidate pnp.bus_id workarounds handling in the ACPI video bus driver (Rafael Wysocki) - Update the ACPI core device drivers to stop setting acpi_device_name() unnecessarily (Rafael Wysocki) - Rearrange code using acpi_device_class() in the ACPI core device drivers and update them to stop setting acpi_device_class() unnecessarily (Rafael Wysocki) - Define ACPI_AC_CLASS in one place (Rafael Wysocki) - Convert the ni903x_wdt watchdog driver and the xen ACPI PAD driver to bind to platform devices instead of ACPI devices (Rafael Wysocki) * acpi-driver: watchdog: ni903x_wdt: Convert to a platform driver ACPI: PAD: xen: Convert to a platform driver ACPI: AC: Define ACPI_AC_CLASS in one place ACPI: driver: Do not set acpi_device_class() unnecessarily ACPI: driver: Avoid using pnp.device_class for netlink handling ACPI: event: Redefine acpi_notifier_call_chain() ACPI: driver: Do not set acpi_device_name() unnecessarily ACPI: video: Consolidate pnp.bus_id workarounds handling ACPI: video: Rework checking for duplicate video bus devices driver core: auxiliary bus: Introduce dev_is_auxiliary() ACPI: PAD: Rearrange notify handler installation and removal ACPI: AC: Get rid of unnecessary declarations 2026-04-09T19:50:37+00:00 Rafael J. Wysocki rafael.j.wysocki@intel.com 2026-04-09T19:50:37+00:00 urn:sha1:5437cdcb552b698ebc7274e84f2ce8bae1769e56 Merge ACPI Time and Alarm Device (TAD) driver updates for 7.1-rc1: - Clean up the ACPI TAD driver in various ways and add an RTC class device interface, including both the RTC setting/reading and alarm timer support, to it (Rafael Wysocki) * acpi-tad: ACPI: TAD: Add alarm support to the RTC class device interface ACPI: TAD: Split acpi_tad_rtc_read_time() ACPI: TAD: Relocate two functions ACPI: TAD: Split three functions to untangle runtime PM handling ACPI: TAD: Use DC wakeup only if AC wakeup is supported ACPI: TAD: Use dev_groups in struct device_driver ACPI: TAD: Update the driver description comment ACPI: TAD: Add RTC class device interface ACPI: TAD: Clear unused RT data in acpi_tad_set_real_time() ACPI: TAD: Rearrange RT data validation checking ACPI: TAD: Use __free() for cleanup in time_store() ACPI: TAD: Support RTC without wakeup ACPI: TAD: Create one attribute group 2026-04-09T19:40:22+00:00 Rafael J. Wysocki rafael.j.wysocki@intel.com 2026-04-09T19:40:22+00:00 urn:sha1:d07060217b8bbed26a84c2d80b2bbb550cb5b403 Merge updates related to the CMOS RTC driver and x86/ACPI CMOS RTC support for 7.1-rc1: - Add ACPI support to the platform device interface in the CMOS RTC driver, make the ACPI core device enumeration code create a platform device for the CMOS RTC, and drop CMOS RTC PNP device support (Rafael Wysocki) - Consolidate the x86-specific CMOS RTC handling with the ACPI TAD driver and clean up the CMOS RTC ACPI address space handler (Rafael Wysocki) - Enable ACPI alarm in the CMOS RTC driver if advertised in ACPI FADT and allow that driver to work without a dedicated IRQ if the ACPI alarm is used (Rafael Wysocki) * acpi-cmos-rtc: rtc: cmos: Do not require IRQ if ACPI alarm is used rtc: cmos: Enable ACPI alarm if advertised in ACPI FADT ACPI: TAD/x86: cmos_rtc: Consolidate address space handler setup rtc: cmos: Drop PNP device support x86: rtc: Drop PNP device check ACPI: PNP: Drop CMOS RTC PNP device support ACPI: x86/rtc-cmos: Use platform device for driver binding ACPI: x86: cmos_rtc: Create a CMOS RTC platform device ACPI: x86: cmos_rtc: Improve coordination with ACPI TAD driver ACPI: x86: cmos_rtc: Clean up address space handler driver 2026-04-09T19:26:06+00:00 Rafael J. Wysocki rafael.j.wysocki@intel.com 2026-04-09T19:26:06+00:00 urn:sha1:bfb0315a2dc89a2f3b353b3b82efe8eeeac629b2 Merge ACPI processor driver updates and ACPI CPPC library updates for 7.1-rc1: - Address multiple assorted issues and clean up the code in the ACPI processor idle driver (Huisong Li) - Replace strlcat() in the ACPI processor idle drive with a better alternative (Andy Shevchenko) - Rearrange and clean up acpi_processor_errata_piix4() (Rafael Wysocki) - Move reference performance to capabilities and fix an uninitialized variable in the ACPI CPPC library (Pengjie Zhang) - Add support for the Performance Limited Register to the ACPI CPPC library (Sumit Gupta) - Add cppc_get_perf() API to read performance controls, extend cppc_set_epp_perf() for FFH/SystemMemory, and make the ACPI CPPC library warn on missing mandatory DESIRED_PERF register (Sumit Gupta) - Modify the cpufreq CPPC driver to update MIN_PERF/MAX_PERF in target callbacks to allow it to control performance bounds via standard scaling_min_freq and scaling_max_freq sysfs attributes and add sysfs documentation for the Performance Limited Register to it (Sumit Gupta) * acpi-processor: ACPI: processor: idle: Reset cpuidle on C-state list changes cpuidle: Extract and export no-lock variants of cpuidle_unregister_device() ACPI: processor: idle: Fix NULL pointer dereference in hotplug path ACPI: processor: idle: Reset power_setup_done flag on initialization failure ACPI: processor: Rearrange and clean up acpi_processor_errata_piix4() ACPI: processor: idle: Replace strlcat() with better alternative ACPI: processor: idle: Remove redundant static variable and rename cstate check function ACPI: processor: idle: Move max_cstate update out of the loop ACPI: processor: idle: Remove redundant cstate check in acpi_processor_power_init ACPI: processor: idle: Add missing bounds check in flatten_lpi_states() * acpi-cppc: ACPI: CPPC: Check cpc_read() return values consistently ACPI: CPPC: Fix uninitialized ref variable in cppc_get_perf_caps() ACPI: CPPC: Move reference performance to capabilities cpufreq: CPPC: Add sysfs documentation for perf_limited ACPI: CPPC: add APIs and sysfs interface for perf_limited cpufreq: cppc: Update MIN_PERF/MAX_PERF in target callbacks cpufreq: CPPC: Update cached perf_ctrls on sysfs write ACPI: CPPC: Extend cppc_set_epp_perf() for FFH/SystemMemory ACPI: CPPC: Warn on missing mandatory DESIRED_PERF register ACPI: CPPC: Add cppc_get_perf() API to read performance controls