linux-dev/arch/x86/kernel/acpi, branch linus/master

Merge tag 'pm-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2022-05-24T23:04:25Z

Pull power management updates from Rafael Wysocki: "These add support for 'artificial' Energy Models in which power numbers for different entities may be in different scales, add support for some new hardware, fix bugs and clean up code in multiple places. Specifics: - Update the Energy Model support code to allow the Energy Model to be artificial, which means that the power values may not be on a uniform scale with other devices providing power information, and update the cpufreq_cooling and devfreq_cooling thermal drivers to support artificial Energy Models (Lukasz Luba). - Make DTPM check the Energy Model type (Lukasz Luba). - Fix policy counter decrementation in cpufreq if Energy Model is in use (Pierre Gondois). - Add CPU-based scaling support to passive devfreq governor (Saravana Kannan, Chanwoo Choi). - Update the rk3399_dmc devfreq driver (Brian Norris). - Export dev_pm_ops instead of suspend() and resume() in the IIO chemical scd30 driver (Jonathan Cameron). - Add namespace variants of EXPORT[_GPL]_SIMPLE_DEV_PM_OPS and PM-runtime counterparts (Jonathan Cameron). - Move symbol exports in the IIO chemical scd30 driver into the IIO_SCD30 namespace (Jonathan Cameron). - Avoid device PM-runtime usage count underflows (Rafael Wysocki). - Allow dynamic debug to control printing of PM messages (David Cohen). - Fix some kernel-doc comments in hibernation code (Yang Li, Haowen Bai). - Preserve ACPI-table override during hibernation (Amadeusz Sławiński). - Improve support for suspend-to-RAM for PSCI OSI mode (Ulf Hansson). - Make Intel RAPL power capping driver support the RaptorLake and AlderLake N processors (Zhang Rui, Sumeet Pawnikar). - Remove redundant store to value after multiply in the RAPL power capping driver (Colin Ian King). - Add AlderLake processor support to the intel_idle driver (Zhang Rui). - Fix regression leading to no genpd governor in the PSCI cpuidle driver and fix the riscv-sbi cpuidle driver to allow a genpd governor to be used (Ulf Hansson). - Fix cpufreq governor clean up code to avoid using kfree() directly to free kobject-based items (Kevin Hao). - Prepare cpufreq for powerpc's asm/prom.h cleanup (Christophe Leroy). - Make intel_pstate notify frequency invariance code when no_turbo is turned on and off (Chen Yu). - Add Sapphire Rapids OOB mode support to intel_pstate (Srinivas Pandruvada). - Make cpufreq avoid unnecessary frequency updates due to mismatch between hardware and the frequency table (Viresh Kumar). - Make remove_cpu_dev_symlink() clear the real_cpus mask to simplify code (Viresh Kumar). - Rearrange cpufreq_offline() and cpufreq_remove_dev() to make the calling convention for some driver callbacks consistent (Rafael Wysocki). - Avoid accessing half-initialized cpufreq policies from the show() and store() sysfs functions (Schspa Shi). - Rearrange cpufreq_offline() to make the calling convention for some driver callbacks consistent (Schspa Shi). - Update CPPC handling in cpufreq (Pierre Gondois). - Extend dev_pm_domain_detach() doc (Krzysztof Kozlowski). - Move genpd's time-accounting to ktime_get_mono_fast_ns() (Ulf Hansson). - Improve the way genpd deals with its governors (Ulf Hansson). - Update the turbostat utility to version 2022.04.16 (Len Brown, Dan Merillat, Sumeet Pawnikar, Zephaniah E. Loss-Cutler-Hull, Chen Yu)" * tag 'pm-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (94 commits) PM: domains: Trust domain-idle-states from DT to be correct by genpd PM: domains: Measure power-on/off latencies in genpd based on a governor PM: domains: Allocate governor data dynamically based on a genpd governor PM: domains: Clean up some code in pm_genpd_init() and genpd_remove() PM: domains: Fix initialization of genpd's next_wakeup PM: domains: Fixup QoS latency measurements for IRQ safe devices in genpd PM: domains: Measure suspend/resume latencies in genpd based on governor PM: domains: Move the next_wakeup variable into the struct gpd_timing_data PM: domains: Allocate gpd_timing_data dynamically based on governor PM: domains: Skip another warning in irq_safe_dev_in_sleep_domain() PM: domains: Rename irq_safe_dev_in_no_sleep_domain() in genpd PM: domains: Don't check PM_QOS_FLAG_NO_POWER_OFF in genpd PM: domains: Drop redundant code for genpd always-on governor PM: domains: Add GENPD_FLAG_RPM_ALWAYS_ON for the always-on governor powercap: intel_rapl: remove redundant store to value after multiply cpufreq: CPPC: Enable dvfs_possible_from_any_cpu cpufreq: CPPC: Enable fast_switch ACPI: CPPC: Assume no transition latency if no PCCT ACPI: bus: Set CPPC _OSC bits for all and when CPPC_LIB is supported ACPI: CPPC: Check _OSC for flexible address space ...

Merge tag 'acpi-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2022-05-24T22:46:55Z

Pull ACPI updates from Rafael Wysocki: "These update the ACPICA kernel code to upstream revision 20220331, improve handling of PCI devices that are in D3cold during system initialization, add support for a few features, fix bugs and clean up code. Specifics: - Update ACPICA code in the kernel to upstream revision 20220331 including the following changes: - Add support for the Windows 11 _OSI string (Mario Limonciello) - Add the CFMWS subtable to the CEDT table (Lawrence Hileman). - iASL: NHLT: Treat Terminator as specific_config (Piotr Maziarz). - iASL: NHLT: Fix parsing undocumented bytes at the end of Endpoint Descriptor (Piotr Maziarz). - iASL: NHLT: Rename linux specific strucures to device_info (Piotr Maziarz). - Add new ACPI 6.4 semantics to Load() and LoadTable() (Bob Moore). - Clean up double word in comment (Tom Rix). - Update copyright notices to the year 2022 (Bob Moore). - Remove some tabs and // comments - automated cleanup (Bob Moore). - Replace zero-length array with flexible-array member (Gustavo A. R. Silva). - Interpreter: Add units to time variable names (Paul Menzel). - Add support for ARM Performance Monitoring Unit Table (Besar Wicaksono). - Inform users about ACPI spec violation related to sleep length (Paul Menzel). - iASL/MADT: Add OEM-defined subtable (Bob Moore). - Interpreter: Fix some typo mistakes (Selvarasu Ganesan). - Updates for revision E.d of IORT (Shameer Kolothum). - Use ACPI_FORMAT_UINT64 for 64-bit output (Bob Moore). - Improve debug messages in the ACPI device PM code (Rafael Wysocki). - Block ASUS B1400CEAE from suspend to idle by default (Mario Limonciello). - Improve handling of PCI devices that are in D3cold during system initialization (Rafael Wysocki). - Fix BERT error region memory mapping (Lorenzo Pieralisi). - Add support for NVIDIA 16550-compatible port subtype to the SPCR parsing code (Jeff Brasen). - Use static for BGRT_SHOW kobj_attribute defines (Tom Rix). - Fix missing prototype warning for acpi_agdi_init() (Ilkka Koskinen). - Fix missing ERST record ID in the APEI code (Liu Xinpeng). - Make APEI error injection to refuse to inject into the zero page (Tony Luck). - Correct description of INT3407 / INT3532 DPTF attributes in sysfs (Sumeet Pawnikar). - Add support for high frequency impedance notification to the DPTF driver (Sumeet Pawnikar). - Make mp_config_acpi_gsi() a void function (Li kunyu). - Unify Package () representation for properties in the ACPI device properties documentation (Andy Shevchenko). - Include UUID in _DSM evaluation warning (Michael Niewöhner)" * tag 'acpi-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (41 commits) Revert "ACPICA: executer/exsystem: Warn about sleeps greater than 10 ms" ACPI: utils: include UUID in _DSM evaluation warning ACPI: PM: Block ASUS B1400CEAE from suspend to idle by default x86: ACPI: Make mp_config_acpi_gsi() a void function ACPI: DPTF: Add support for high frequency impedance notification ACPI: AGDI: Fix missing prototype warning for acpi_agdi_init() ACPI: bus: Avoid non-ACPI device objects in walks over children ACPI: DPTF: Correct description of INT3407 / INT3532 attributes ACPI: BGRT: use static for BGRT_SHOW kobj_attribute defines ACPI, APEI, EINJ: Refuse to inject into the zero page ACPI: PM: Always print final debug message in acpi_device_set_power() ACPI: SPCR: Add support for NVIDIA 16550-compatible port subtype ACPI: docs: enumeration: Unify Package () for properties (part 2) ACPI: APEI: Fix missing ERST record id ACPICA: Update version to 20220331 ACPICA: exsystem.c: Use ACPI_FORMAT_UINT64 for 64-bit output ACPICA: IORT: Updates for revision E.d ACPICA: executer/exsystem: Fix some typo mistakes ACPICA: iASL/MADT: Add OEM-defined subtable ACPICA: executer/exsystem: Warn about sleeps greater than 10 ms ...

Merge tag 'x86_cleanups_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2022-05-24T01:17:09Z

Pull x86 cleanups from Borislav Petkov: - Serious sanitization and cleanup of the whole APERF/MPERF and frequency invariance code along with removing the need for unnecessary IPIs - Finally remove a.out support - The usual trivial cleanups and fixes all over x86 * tag 'x86_cleanups_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits) x86: Remove empty files x86/speculation: Add missing srbds=off to the mitigations= help text x86/prctl: Remove pointless task argument x86/aperfperf: Make it correct on 32bit and UP kernels x86/aperfmperf: Integrate the fallback code from show_cpuinfo() x86/aperfmperf: Replace arch_freq_get_on_cpu() x86/aperfmperf: Replace aperfmperf_get_khz() x86/aperfmperf: Store aperf/mperf data for cpu frequency reads x86/aperfmperf: Make parts of the frequency invariance code unconditional x86/aperfmperf: Restructure arch_scale_freq_tick() x86/aperfmperf: Put frequency invariance aperf/mperf data into a struct x86/aperfmperf: Untangle Intel and AMD frequency invariance init x86/aperfmperf: Separate AP/BP frequency invariance init x86/smp: Move APERF/MPERF code where it belongs x86/aperfmperf: Dont wake idle CPUs in arch_freq_get_on_cpu() x86/process: Fix kernel-doc warning due to a changed function name x86: Remove a.out support x86/mm: Replace nodes_weight() with nodes_empty() where appropriate x86: Replace cpumask_weight() with cpumask_empty() where appropriate x86/pkeys: Remove __arch_set_user_pkey_access() declaration ...

x86: ACPI: Make mp_config_acpi_gsi() a void function

2022-05-11T17:27:49Z

Because the return value of mp_config_acpi_gsi() is not use, change it into a void function. Signed-off-by: Li kunyu [ rjw: Subject and changelog rewrite ] Signed-off-by: Rafael J. Wysocki

x86/aperfmperf: Untangle Intel and AMD frequency invariance init

2022-04-27T18:22:19Z

AMD boot CPU initialization happens late via ACPI/CPPC which prevents the Intel parts from being marked __init. Split out the common code and provide a dedicated interface for the AMD initialization and mark the Intel specific code and data __init. The remaining text size is almost cut in half: text: 2614 -> 1350 init.text: 0 -> 786 Signed-off-by: Thomas Gleixner Reviewed-by: Rafael J. Wysocki Acked-by: Peter Zijlstra (Intel) Acked-by: Paul E. McKenney Link: https://lore.kernel.org/r/20220415161206.592465719@linutronix.de

x86/aperfmperf: Separate AP/BP frequency invariance init

2022-04-27T13:51:08Z

This code is convoluted and because it can be invoked post init via the ACPI/CPPC code, all of the initialization functionality is built in instead of being part of init text and init data. As a first step create separate calls for the boot and the application processors. Signed-off-by: Thomas Gleixner Reviewed-by: Rafael J. Wysocki Acked-by: Peter Zijlstra (Intel) Acked-by: Paul E. McKenney Link: https://lore.kernel.org/r/20220415161206.536733494@linutronix.de

x86/ACPI: Preserve ACPI-table override during hibernation

2022-04-13T15:01:14Z

When overriding NHLT ACPI-table tests show that on some platforms there is problem that NHLT contains garbage after hibernation/resume cycle. Problem stems from the fact that ACPI override performs early memory allocation using memblock_phys_alloc_range() in memblock_phys_alloc_range(). This memory block is later being marked as ACPI memory block in arch_reserve_mem_area(). Later when memory areas are considered for hibernation it is being marked as nosave in e820__register_nosave_regions(). Fix this by marking ACPI override memory area as ACPI NVS (Non-Volatile-Sleeping), which according to specification needs to be saved on entering S4 and restored when leaving and is implemented as such in kernel. Signed-off-by: Amadeusz Sławiński Signed-off-by: Rafael J. Wysocki

x86/acpi/x86/boot: Add multiprocessor wake-up support

2022-04-07T15:27:53Z

Secondary CPU startup is currently performed with something called the "INIT/SIPI protocol". This protocol requires assistance from VMMs to boot guests. As should be a familiar story by now, that support can not be provded to TDX guests because TDX VMMs are not trusted by guests. To remedy this situation a new[1] "Multiprocessor Wakeup Structure" has been added to to an existing ACPI table (MADT). This structure provides the physical address of a "mailbox". A write to the mailbox then steers the secondary CPU to the boot code. Add ACPI MADT wake structure parsing support and wake support. Use this support to wake CPUs whenever it is present instead of INIT/SIPI. While this structure can theoretically be used on 32-bit kernels, there are no 32-bit TDX guest kernels. It has not been tested and can not practically *be* tested on 32-bit. Make it 64-bit only. 1. Details about the new structure can be found in ACPI v6.4, in the "Multiprocessor Wakeup Structure" section. Co-developed-by: Sean Christopherson Signed-off-by: Sean Christopherson Signed-off-by: Kuppuswamy Sathyanarayanan Signed-off-by: Kirill A. Shutemov Signed-off-by: Dave Hansen Reviewed-by: Andi Kleen Reviewed-by: Rafael J. Wysocki Reviewed-by: Dave Hansen Link: https://lkml.kernel.org/r/20220405232939.73860-22-kirill.shutemov@linux.intel.com

Merge tag 'pm-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2022-03-21T21:26:28Z

Pull power management updates from Rafael Wysocki: "These are mostly fixes and cleanups all over the code and a new piece of documentation for Intel uncore frequency scaling. Functionality-wise, the intel_idle driver will support Sapphire Rapids Xeons natively now (with some extra facilities for controlling C-states more precisely on those systems), virtual guests will take the ACPI S4 hardware signature into account by default, the intel_pstate driver will take the defualt EPP value from the firmware, cpupower utility will support the AMD P-state driver added in the previous cycle, and there is a new tracer utility for that driver. Specifics: - Allow device_pm_check_callbacks() to be called from interrupt context without issues (Dmitry Baryshkov). - Modify devm_pm_runtime_enable() to automatically handle pm_runtime_dont_use_autosuspend() at driver exit time (Douglas Anderson). - Make the schedutil cpufreq governor use to_gov_attr_set() instead of open coding it (Kevin Hao). - Replace acpi_bus_get_device() with acpi_fetch_acpi_dev() in the cpufreq longhaul driver (Rafael Wysocki). - Unify show() and store() naming in cpufreq and make it use __ATTR_XX (Lianjie Zhang). - Make the intel_pstate driver use the EPP value set by the firmware by default (Srinivas Pandruvada). - Re-order the init checks in the powernow-k8 cpufreq driver (Mario Limonciello). - Make the ACPI processor idle driver check for architectural support for LPI to avoid using it on x86 by mistake (Mario Limonciello). - Add Sapphire Rapids Xeon support to the intel_idle driver (Artem Bityutskiy). - Add 'preferred_cstates' module argument to the intel_idle driver to work around C1 and C1E handling issue on Sapphire Rapids (Artem Bityutskiy). - Add core C6 optimization on Sapphire Rapids to the intel_idle driver (Artem Bityutskiy). - Optimize the haltpoll cpuidle driver a bit (Li RongQing). - Remove leftover text from intel_idle() kerneldoc comment and fix up white space in intel_idle (Rafael Wysocki). - Fix load_image_and_restore() error path (Ye Bin). - Fix typos in comments in the system wakeup hadling code (Tom Rix). - Clean up non-kernel-doc comments in hibernation code (Jiapeng Chong). - Fix __setup handler error handling in system-wide suspend and hibernation core code (Randy Dunlap). - Add device name to suspend_report_result() (Youngjin Jang). - Make virtual guests honour ACPI S4 hardware signature by default (David Woodhouse). - Block power off of a parent PM domain unless child is in deepest state (Ulf Hansson). - Use dev_err_probe() to simplify error handling for generic PM domains (Ahmad Fatoum). - Fix sleep-in-atomic bug caused by genpd_debug_remove() (Shawn Guo). - Document Intel uncore frequency scaling (Srinivas Pandruvada). - Add DTPM hierarchy description (Daniel Lezcano). - Change the locking scheme in DTPM (Daniel Lezcano). - Fix dtpm_cpu cleanup at exit time and missing virtual DTPM pointer release (Daniel Lezcano). - Make dtpm_node_callback[] static (kernel test robot). - Fix spelling mistake "initialze" -> "initialize" in dtpm_create_hierarchy() (Colin Ian King). - Add tracer tool for the amd-pstate driver (Jinzhou Su). - Fix PC6 displaying in turbostat on some systems (Artem Bityutskiy). - Add AMD P-State support to the cpupower utility (Huang Rui)" * tag 'pm-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (58 commits) cpufreq: powernow-k8: Re-order the init checks cpuidle: intel_idle: Drop redundant backslash at line end cpuidle: intel_idle: Update intel_idle() kerneldoc comment PM: hibernate: Honour ACPI hardware signature by default for virtual guests cpufreq: intel_pstate: Use firmware default EPP cpufreq: unify show() and store() naming and use __ATTR_XX PM: core: keep irq flags in device_pm_check_callbacks() cpuidle: haltpoll: Call cpuidle_poll_state_init() later Documentation: amd-pstate: add tracer tool introduction tools/power/x86/amd_pstate_tracer: Add tracer tool for AMD P-state tools/power/x86/intel_pstate_tracer: make tracer as a module cpufreq: amd-pstate: Add more tracepoint for AMD P-State module PM: sleep: Add device name to suspend_report_result() turbostat: fix PC6 displaying on some systems intel_idle: add core C6 optimization for SPR intel_idle: add 'preferred_cstates' module argument intel_idle: add SPR support PM: runtime: Have devm_pm_runtime_enable() handle pm_runtime_dont_use_autosuspend() ACPI: processor idle: Check for architectural support for LPI cpuidle: PSCI: Move the `has_lpi` check to the beginning of the function ...

PM: hibernate: Honour ACPI hardware signature by default for virtual guests

2022-03-16T18:29:32Z

The ACPI specification says that OSPM should refuse to restore from hibernate if the hardware signature changes, and should boot from scratch. However, real BIOSes often vary the hardware signature in cases where we *do* want to resume from hibernate, so Linux doesn't follow the spec by default. However, in a virtual environment there's no reason for the VMM to vary the hardware signature *unless* it wants to trigger a clean reboot as defined by the ACPI spec. So enable the check by default if a hypervisor is detected. Signed-off-by: David Woodhouse Signed-off-by: Rafael J. Wysocki