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v7.4-rc1
2321 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Ali Ahmet Memiş
|
80892972ff |
ACPI: utils: Add exclusive AML evaluation helpers
ACPICA drops the interpreter lock while AML waits, for example around EC accesses, so two methods can run interleaved. Some firmware relies on methods not interleaving, for instance by switching an EC page selector without taking the AML mutex that the other users of that page hold. Add acpi_evaluate_object_exclusive(), acpi_evaluate_integer_exclusive() and acpi_execute_simple_method_exclusive() which serialize the evaluation under a global mutex, for callers that are known to be affected. Suggested-by: Rafael J. Wysocki <rafael@kernel.org> Link: https://lore.kernel.org/all/CAJZ5v0gS4agVUkCO6M=VW4Wi2y1-s+k23bpzmX9aAZ0Rsv4z9Q@mail.gmail.com/ Signed-off-by: Ali Ahmet Memiş <aliamemis@disroot.org> Reviewed-by: Rong Zhang <i@rong.moe> Link: https://patch.msgid.link/20261018122220.678822-2-aliamemis@disroot.org Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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|
Linus Torvalds
|
df37e39242 |
Power management updates for 7.4-rc1
- Fix multiple issues related to input validation, synchronization,
access safety, memory layout and register field validation, and error
handling in the ACPI CPPC library (Christian Loehle and Sumit Gupta)
- Select the frequency-invariance callback per CPU in the CPPC cpufreq
driver and create the FIE worker before enabling PCC callbacks in it
to avoid queueing work through a missing worker and dereferencing a
NULL pointer (Christian Loehle)
- Update the CPPC cpufreq driver entry in MAINTAINERS and add a new
entry for the ACPI CPPC library (Christian Loehle)
- Minor fixes in various cpufreq drivers (Alexander Koskovich, Daniel
Schwierzeck, Frank Zhang, Haotian Zhang, Kathiravan Thirumoorthy,
Sumeet Pawnikar, and Xueqin Luo)
- Fix wrong behaviors on multi-node servers in the Loongson cpufreq
driver (Huacai Chen)
- Reject NULL from cpufreq_cpu_get() in the Rust code (Mehmet Koseoglu)
- Add suspend OPP to mediatek cpufreq driver and DT (Ryan Brue)
- Fixups for a few bugs identified by Sashiko in the amd-pstate cpufreq
driver (Mario Limoncielloi, Wentao Guan)
- Initial support for maximum frequency capacity handling on Zen6
client in amd-pstate (Mario Limonciello)
- Fix for amd-pstate-ut with 'Requested CPU Min frequency' BIOS option
(K Prateek Nayak)
- New Zen6 tuning values for EPP in amd-pstate (Mario Limonciello,
Vishal Badole)
- amd-pstate documentation fix (Karl Mehltretter)
- Restrict deferred downscaling to low load for shared policies in the
conservative cpufreq governor to avoid undesirable CPU frequency
reduction in some cases (Shengming Hu)
- Serialize sugov_start() against rate limit updates in the schedutil
cpufreq governor to avoid using a stale rate limit value (Hui Su)
- Prevent cpuidle governors menu and teo from returning idle state 0
after it has been disabled (Xueqin Luo)
- Replace min_t() with the better alternatives in the intel_idle driver
and make it use 2-argument strscpy() (Andy Shevchenko)
- Fix two repeated phrase instances in cpuidle (Hemanth Selam, Syazwina
Fazrul)
- Add rugged Panther Lake support to the intel_rapl power capping
driver and make it use %pe for printing error pointers (Srinivas
Pandruvada and Sumeet Pawnikar)
- Update and improve runtime PM documentation and add a kunit test for
supplier idle/suspend (Brian Norris)
- Add a pm_runtime_dont_use_autosuspend() call to pm_runtime_reinit()
to ensure autosuspend disabling on driver teardown (Joshua Crofts)
- Ignore page-zero RAM in E820 checksum during hibernation on x86 to
avoid rejecting images created after kexec() (Matthias Goergens)
- Add resume event mapping for PMSG_POWEROFF to the PM core to allow it
to carry out device shutdown in the future (Mario Limonciello)
- Add DPM watchdog to prepare/late/early/noirq/complete phases of
device suspend and resume (Mayank Rungta)
- Update swsusp.txt references to swsusp.rst in hibernation
documentation (Li Jun)
- Fix use-after-free of perf domain in netlink doit handlers for energy
models (Fan Wu)
- Add synchronize_rcu() back to cpu_pm_unregister_notifier() after it
was removed inadvertently in previous development cycles to avoid
use-after-free (Bradley Morgan)
- Unregister CPU PM notifier outside the timer lock in the timer-ti-dm
clocksource driver (Bradley Morgan)
- Fix typo "sucessfully" in a comment in pm_clk_add_clk() kerneldoc
comment and typo "hierachy" in a comment in pm-graph (Hemanth Selam)
- Fix the return value in dev_pm_opp_get_of_node() kernel-doc (Karl
Mehltretter)
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Merge tag 'pm-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"This time, the most visible part are the ACPI CPPC updates from
Christian Loehle, including CPPC cpufreq driver changes, even though
updates of cpufreq drivers proper are still the largest topic group.
However, the updates of cpufreq drivers depend on the ACPI CPPC
updates, so they should really be counted together and that is well
over 1/2 of the total commit count.
Interestingly enough, almost all of the updates included here are
fixes or cleanups, with some new feature support in the amd-pstate
cpufreq driver and IPQ9650 support in the qcom-nvmem cpufreq driver.
The runtime PM documentation improvements from Brian Norris can also
be mostly regarded as fixes, but a new kunit test goes along with
them.
Specifics:
- Fix multiple issues related to input validation, synchronization,
access safety, memory layout and register field validation, and
error handling in the ACPI CPPC library (Christian Loehle and Sumit
Gupta)
- Select the frequency-invariance callback per CPU in the CPPC
cpufreq driver and create the FIE worker before enabling PCC
callbacks in it to avoid queueing work through a missing worker and
dereferencing a NULL pointer (Christian Loehle)
- Update the CPPC cpufreq driver entry in MAINTAINERS and add a new
entry for the ACPI CPPC library (Christian Loehle)
- Minor fixes in various cpufreq drivers (Alexander Koskovich, Daniel
Schwierzeck, Frank Zhang, Haotian Zhang, Kathiravan Thirumoorthy,
Sumeet Pawnikar, and Xueqin Luo)
- Fix wrong behaviors on multi-node servers in the Loongson cpufreq
driver (Huacai Chen)
- Reject NULL from cpufreq_cpu_get() in the Rust code (Mehmet
Koseoglu)
- Add suspend OPP to mediatek cpufreq driver and DT (Ryan Brue)
- Fixups for a few bugs identified by Sashiko in the amd-pstate
cpufreq driver (Mario Limoncielloi, Wentao Guan)
- Initial support for maximum frequency capacity handling on Zen6
client in amd-pstate (Mario Limonciello)
- Fix for amd-pstate-ut with 'Requested CPU Min frequency' BIOS
option (K Prateek Nayak)
- New Zen6 tuning values for EPP in amd-pstate (Mario Limonciello,
Vishal Badole)
- amd-pstate documentation fix (Karl Mehltretter)
- Restrict deferred downscaling to low load for shared policies in
the conservative cpufreq governor to avoid undesirable CPU
frequency reduction in some cases (Shengming Hu)
- Serialize sugov_start() against rate limit updates in the schedutil
cpufreq governor to avoid using a stale rate limit value (Hui Su)
- Prevent cpuidle governors menu and teo from returning idle state 0
after it has been disabled (Xueqin Luo)
- Replace min_t() with the better alternatives in the intel_idle
driver and make it use 2-argument strscpy() (Andy Shevchenko)
- Fix two repeated phrase instances in cpuidle (Hemanth Selam,
Syazwina Fazrul)
- Add rugged Panther Lake support to the intel_rapl power capping
driver and make it use %pe for printing error pointers (Srinivas
Pandruvada and Sumeet Pawnikar)
- Update and improve runtime PM documentation and add a kunit test
for supplier idle/suspend (Brian Norris)
- Add a pm_runtime_dont_use_autosuspend() call to pm_runtime_reinit()
to ensure autosuspend disabling on driver teardown (Joshua Crofts)
- Ignore page-zero RAM in E820 checksum during hibernation on x86 to
avoid rejecting images created after kexec() (Matthias Goergens)
- Add resume event mapping for PMSG_POWEROFF to the PM core to allow
it to carry out device shutdown in the future (Mario Limonciello)
- Add DPM watchdog to prepare/late/early/noirq/complete phases of
device suspend and resume (Mayank Rungta)
- Update swsusp.txt references to swsusp.rst in hibernation
documentation (Li Jun)
- Fix use-after-free of perf domain in netlink doit handlers for
energy models (Fan Wu)
- Add synchronize_rcu() back to cpu_pm_unregister_notifier() after it
was removed inadvertently in previous development cycles to avoid
use-after-free (Bradley Morgan)
- Unregister CPU PM notifier outside the timer lock in the
timer-ti-dm clocksource driver (Bradley Morgan)
- Fix typo "sucessfully" in a comment in pm_clk_add_clk() kerneldoc
comment and typo "hierachy" in a comment in pm-graph (Hemanth
Selam)
- Fix the return value in dev_pm_opp_get_of_node() kernel-doc (Karl
Mehltretter)"
* tag 'pm-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (89 commits)
cpufreq: loongson3: Replace IOCSR read/write with MMIO ones
cpufreq: loongson3: Use global physical CPU ID in get/target callbacks
cpufreq: loongson3: Replace per-package mutex with per-node
cpufreq: loongson3: Adjust the width of id and val in smc_message
cpufreq: loongson3: Make this driver depend on MACH_LOONGSON64
PM: runtime: Expand introduction with core concepts and structure
cpufreq: schedutil: Serialize sugov_start() against rate limit updates
MAINTAINERS: ACPI: Add a separate CPPC entry
MAINTAINERS: cpufreq: Replace CPPC reviewer
arm64: dts: mediatek: mt8173: Mark the lowest CPU OPPs for suspend
cpufreq: mediatek: Enter system sleep at the suspend OPP
cpufreq: qcom-cpufreq-hw: fix device node refcount leak in phandle parsing
cpufreq: qcom-nvmem: Add IPQ9650 support
cpufreq: Add Milos to cpufreq-dt-platdev blocklist
cpufreq: Use %pe to print error pointers symbolically
rust: rcpufreq_dt: add module alias
cpufreq: sti: avoid NULL dereference in dev_err()
cpufreq: tegra194: fix double-pointer error in get_cpu_ndiv
cpufreq: sparc-us2e: fix frequency table index copy-paste error
rust: cpufreq: reject NULL from cpufreq_cpu_get()
...
|
||
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Rafael J. Wysocki
|
eece15c579 |
Merge branch 'pm-cpufreq'
Merge cpufreq updates for 7.4: - Minor fixes in various cpufreq drivers (Alexander Koskovich, Daniel Schwierzeck, Frank Zhang, Haotian Zhang, Kathiravan Thirumoorthy, Sumeet Pawnikar, and Xueqin Luo) - Fix wrong behaviors on multi-node servers in the Loongson cpufreq driver (Huacai Chen) - Reject NULL from cpufreq_cpu_get() in the Rust code (Mehmet Koseoglu) - Add suspend OPP to mediatek cpufreq driver and DT (Ryan Brue) - Fixups for a few bugs identified by Sashiko in the amd-pstate cpufreq driver (Mario Limoncielloi, Wentao Guan) - Initial support for maximum frequency capacity handling on Zen6 client in amd-pstate (Mario Limonciello) - Fix for amd-pstate-ut with 'Requested CPU Min frequency' BIOS option (K Prateek Nayak) - New Zen6 tuning values for EPP in amd-pstate (Mario Limonciello, Vishal Badole) - amd-pstate documentation fix (Karl Mehltretter) - Restrict deferred downscaling to low load for shared policies in the conservative cpufreq governor to avoid undesirable CPU frequency reduction in some cases (Shengming Hu) - Serialize sugov_start() against rate limit updates in the schedutil cpufreq governor to avoid using a stale rate limit value (Hui Su) * pm-cpufreq: (34 commits) cpufreq: loongson3: Replace IOCSR read/write with MMIO ones cpufreq: loongson3: Use global physical CPU ID in get/target callbacks cpufreq: loongson3: Replace per-package mutex with per-node cpufreq: loongson3: Adjust the width of id and val in smc_message cpufreq: loongson3: Make this driver depend on MACH_LOONGSON64 cpufreq: schedutil: Serialize sugov_start() against rate limit updates arm64: dts: mediatek: mt8173: Mark the lowest CPU OPPs for suspend cpufreq: mediatek: Enter system sleep at the suspend OPP cpufreq: qcom-cpufreq-hw: fix device node refcount leak in phandle parsing cpufreq: qcom-nvmem: Add IPQ9650 support cpufreq: Add Milos to cpufreq-dt-platdev blocklist cpufreq: Use %pe to print error pointers symbolically rust: rcpufreq_dt: add module alias cpufreq: sti: avoid NULL dereference in dev_err() cpufreq: tegra194: fix double-pointer error in get_cpu_ndiv cpufreq: sparc-us2e: fix frequency table index copy-paste error rust: cpufreq: reject NULL from cpufreq_cpu_get() cpufreq: amd-pstate-ut: Fix max_freq and EPP test failures on Zen6 cpufreq: amd-pstate: Propagate cppc_set_auto_sel() errors on mode change cpufreq: amd-pstate: Restore previous mode when changing driver mode fails ... |
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Rafael J. Wysocki
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8669f2b6c9 |
Merge branch 'acpi-driver'
Merge changes related to ACPI support in device drivers for 7.4: - Switch over the users of acpi_get_first_physical_node(), that was inherently racy and therefore not really safe to use, to use its replacement acpi_bus_get_primary_device(), and eliminate the former (Rafael Wysocki) - Add !CONFIG_ACPI stubs for acpi_find_child_device() and acpi_device_uid() (Mario Limonciello and Robin Murphy) * acpi-driver: ACPI: bus: Drop acpi_get_first_physical_node() efi/dev-path-parser: Switch to use acpi_bus_get_primary_device() ALSA: hda: tas2781: Switch to use acpi_bus_get_primary_device() ALSA: hda: cs35l41: Switch to use acpi_bus_get_primary_device() iommu/arm-smmu-v3: Switch to use acpi_bus_get_primary_device() ACPI: Add stub for acpi_find_child_device() ACPI: bus: Provide !ACPI stub for acpi_device_uid() ALSA: hda: aw88399: Switch to use acpi_bus_get_primary_device() ASoC: loongson: Switch to use acpi_bus_get_primary_device() ASoC: intel: boards: Switch to use acpi_bus_get_primary_device() ASoC: amd: acp3x-es83xx: Switch to use acpi_bus_get_primary_device() ASoC: amd: acp-es8336: Switch to use acpi_bus_get_primary_device() thunderbolt: Switch to use acpi_bus_get_primary_device() platform/x86: apple-gmux: Switch to use acpi_bus_get_primary_device() platform/x86: x86-android-tablets: Use acpi_bus_get_primary_device() platform/x86: serdev_helpers: Switch to use acpi_bus_get_primary_device() platform/x86: yogabook: Switch to use acpi_bus_get_primary_device() ACPI: amba: Switch to use acpi_bus_get_primary_device() ACPI: bus: Use acpi/acpi_bus.h without CONFIG_ACPI |
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Rafael J. Wysocki
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5a44bb4863 |
Merge branches 'acpica' and 'acpi-thermal'
Merge ACPICA updates and ACPI thermal control updates for 7.4: - Add IOVT IOMMU support to ACPICA (Bibo Mao) - Fix PCC OperationRegion command offsets in ACPICA (Sudeep Holla) - Fix memory leak in acpi_ds_create_field() related to the handling of internal_pcc_buffer allocations (Breno Leitao) - Fix memory leak due to leftover devm_kcalloc() argument in the ACPI fan driver (Rafael Wysocki) - Fix backlight unregistration ordering in the ACPI video bus device driver (Rafael Wysocki) - Update the thermal core to allow the registration of thermal class cooling devices under specific parents and convert the ACPI fan, ACPI processor, and ACPI video bus device drivers to do so (Rafael Wysocki) - Adjust the ACPI thermal zone driver to use thermal class cooling device parent information for binding cooling devices to trip points in thermal zones (Rafael Wysocki) - Use cooling device data that is a better match for a given driver instread of a struct acpi_device pointer that had to be used for this purpose previously in the ACPI fan and processor drivers (Rafael Wysocki) - Fix acpi_thermal_guess_offset() in the ACPI thermal zone driver for thermal zone devices with a 273.0°K offset (Hans de Goede) - Define a free for ACPI objects allocated by ACPICA helpers and use it to simplify AML error handling in the ACPI fan driver (Rafael Wysocki) * acpica: ACPICA: actbl2.h: Add bit constants of the Flags field in the IOVT IOMMU structure ACPICA: Fix PCC OperationRegion command offsets ACPICA: Fix memory leak in acpi_ds_create_field() * acpi-thermal: ACPI: fan: Use __free() to simplify AML error handling ACPI: thermal: Fix acpi_thermal_guess_offset() for device with a 273.0°K offset ACPI: fan: Use more suitable cooling device data ACPI: fan: Store ACPI device pointer in struct acpi_fan ACPI: processor: thermal: Use more suitable cooling device data ACPI: thermal: Use cooling device parent for thermal zone binding ACPI: fan: Use thermal_cooling_device_create() ACPI: video: Use thermal_cooling_device_create() ACPI: processor: thermal: Use thermal_cooling_device_create() thermal: core: Introduce thermal_cooling_device_create() ACPI: video: Fix backlight unregistration ordering ACPI: fan: Fix memory leak due to leftover devm_kcalloc() argument |
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Rafael J. Wysocki
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6a71f067f7 |
Merge branches 'acpi-pci' and 'acpi-apei'
Merge an ACPI support change related to PCI and ACPI APEI support updates for 7.4: - Clear driver_data before free in the ACPI PCI Link driver to prevent a dangling pointer from being used later (Jiale Yao) - Accumulate the queued flag across error sections of a CPER record in ghes_do_proc() to prevent it from being cleared by a later section or entry that does not queue memory-failure work (Breno Leitao) - Map a raw PCI AER Capability image field by field to prevent information loss from occurring while processing it (Dave Jiang) - Update a stale driver source reference in the ACPI APEI EINJ driver documentation (Prabhakar Pujeri) - Reject CPER records with an out-of-range error_data_length or an error status block length wrapping a u32 in the EFI CPER driver (Dave Jiang) - Address multiple assorted issues in the ACPI extlog driver (Dave Jiang) - Address two issues related to CXL in the ACPI APEI GHES driver (Dave Jiang) - Read only validated fields in cper_mem_err_pack() (Dave Jiang) - Validate memory error section length before payload access, prevent writes past array bounds from occurring and sanitize software metadata in the ACPI APEI GHES driver (Dave Jiang) - Make cxl_cper_handle_prot_err() static (Dave Jiang) * acpi-pci: ACPI: PCI: pci_link: clear driver_data before free * acpi-apei: ACPI: APEI: accumulate the queued flag across error sections PCI/AER: Map a raw AER Capability image field by field Documentation: ACPI: EINJ: Update stale driver source reference cxl/ras: Make cxl_cper_handle_prot_err() static ACPI: APEI: GHES: Bound AER info copy and sanitize software metadata ACPI: APEI: GHES: Validate memory error section length before payload access efi/cper: Read only validated fields in cper_mem_err_pack() ACPI: APEI: GHES: Validate CXL protocol error section length before RAS cap copy ACPI: APEI: GHES: Bound CXL event record copy to the firmware section length ACPI: extlog: Fix CONFIG_ACPI_APEI_PCIEAER guard typo ACPI: extlog: Validate PCIe error section length before payload access ACPI: extlog: Avoid populating software AER metadata from raw hardware buffer ACPI: extlog: Defer CXL protocol error handling to avoid lock inversion ACPI: extlog: Validate elog record length before walking sections efi/cper: Reject an error status block length that wraps a u32 efi/cper: Reject CPER records with an out-of-range error_data_length |
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Rafael J. Wysocki
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52e4ebeee9 |
Merge branches 'acpi-tables', 'acpi-osl', 'acpi-utils' and 'acpi-pm'
Merge ACPI table parser updates, an ACPI OS services layer (OSL) update, ACPI utility API updates, and ACPI power management updates for 7.4: - Remove __meminitdata from hmat_adist_nb declaration preserving it even when CONFIG_MEMORY_HOTPLUG is not set to prevent notifier chain corruption in some cases (Alejandro Lucero) - Prevent a NULL pointer dereference when attempting to read the table length after a mapping bookkeeping failure during an initrd override invocation with permanent table mappings enabled (Slavin Liu) - Use for_each_populated_zone() in get_node_num() in the MRRM table pareser (Sang-Heon Jeon) - Use vsnprintf() in acpi_os_vprintf() to prevent memory corruption resulting from overly long diagnostic messages that may not fit into a static buffer used by ACPICA and may be produced by a malformed ACPI table (Vlatko Kosturjak) - Ignore leading root scope prefix in string _UID match to allow AMD IOMMU matching to work as expected in some cases (Mario Limonciello) - Adjust message printing macros for ACPI objects to use dev_fmt() for more consistency with the analogous dev_*() macros (Rafael Wysocki) - Add _Ixx GPE wake indicator support to the x86 suspend-to-idle handling code (Saranya Gopal) - Add quirks to avoid turning off unused ACPI power resources on Acer Swift 3 SF314-56G (MX250), Casper Excalibur G900, and Acer Aspire A515-53G (Matthias Dittrich, Hakan Abay, Krittikun Wongnin) - Drop unused sleep_no_lps0 define from the generic ACPI system sleep handling code (Riwen Lu) * acpi-tables: ACPI: HMAT: preserve hmat_adist_nb notifier block ACPI: tables: handle failed initrd override mappings ACPI: MRRM: Use for_each_populated_zone() in get_node_num() * acpi-osl: ACPI: OSL: Use vsnprintf() in acpi_os_vprintf() * acpi-utils: ACPI: utils: Ignore leading root scope prefix in string _UID match ACPI: utils: Adjust message printing macros for ACPI objects * acpi-pm: ACPI: PM: Add Acer Aspire A515-53G to dmi_leave_unused_power_resources_on[] ACPI: PM: sleep: Drop unused sleep_no_lps0 define ACPI: PM: Add unused power resource quirk for Casper Excalibur G900 ACPI: PM: Add quirk for Acer Swift 3 SF314-56G (MX250) ACPI: PM: s2idle: Add _Ixx GPE wake indicator support |
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Rafael J. Wysocki
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253b25cbb3 |
Merge branches 'acpi-scan', 'acpi-glue', 'acpi-bus' and 'acpi-sysfs'
Merge ACPI support infrastructure changes for 7.4: - Make the core ACPI device enumeration code stop attempting to initialize ACPI power management for devices before they are known to be present and functional (Rafael Wysocki) - Simplify and clean up the core ACPI device enumeration code on top of the previous adjustment and reduce debug noise coming from it (Rafael Wysocki) - Fix locking in the code binding devices to their ACPI companions, prevent it from replacing a valid ACPI companion pointer with NULL incidentally, improve its messaging (including debug noise reduction), and reduce its overhead by making it skip the cases in which no ACPI companion may exist early (Rafael Wysocki) - Reduce runtime memory footprint of struct acpi_device by rearranging fields in it (Andy Shevchenko) - Update the driver core to allow bus types without drivers to be registered as "companion bus types" without driver-related sysfs attributes and register the ACPI bus type as a companion one (Rafael Wysocki) - Use strscpy() instead of strcpy() in the ACPI sysfs interface (Ruslan Vagner) * acpi-scan: ACPI: scan: Combine two conditionals in acpi_bus_attach() ACPI: PM: Move acpi_bus_init_power() declaration to internal header file ACPI: scan: Stop calling acpi_bus_init_power() early ACPI: PM: Drop parent state update from acpi_device_get_power() ACPI: scan: Drop useless and noisy debug statement * acpi-glue: ACPI: glue: Skip devices with no type in acpi_device_notify() ACPI: glue: Fix up and adjust acpi_unbind_one() ACPI: glue: Rearrange acpi_bind_one() to avoid breakage ACPI: glue: Carry out companion lookup under bus_type_sem ACPI: glue: Rework the success message in acpi_device_notify() ACPI: glue: Reduce debug noise from acpi_device_notify() * acpi-bus: driver core/ACPI: Introduce companion_bus_register() ACPI: bus: Reduce runtime memory footprint of struct acpi_device * acpi-sysfs: ACPI: sysfs: use strscpy() instead of strcpy() |
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Bibo Mao
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3bd2779b6c |
ACPICA: actbl2.h: Add bit constants of the Flags field in the IOVT IOMMU structure
According to the IOVT specification, define macros for each bit of the Flags field in the IOVT IOMMU structure. Link: https://github.com/open-acpica/acpica/commit/352f750e4cc0 Signed-off-by: Bibo Mao <maobibo@loongson.cn> Link: https://patch.msgid.link/20260922121058.972734-2-maobibo@loongson.cn Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Mario Limonciello
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4817d3e2b9 |
ACPI: CPPC: Refactor boost ratio handling
Rename amd_get_boost_ratio_numerator() to amd_get_effective_highest_perf() to better reflect that it returns the effective highest performance value for a CPU, accounting for preferred cores and heterogeneous topologies. Add a new helper amd_get_boost_ratio() for doing both for boost ratio calculations and update callers to use it. This refactoring is needed because on some AMD systems (Zen6+), the boost ratio should be calculated from frequency values rather than performance values. Newer versions of the ACPI will introduce a proper interface for getting this information, but for now hardcode values so that these systems perform as intended and to unblock future scheduler work while we continue to wait. For now use some temporary hardcoded values for Zen6 platforms. Reviewed-by: K Prateek Nayak <kprateek.nayak@amd.com> Tested-by: K Prateek Nayak <kprateek.nayak@amd.com> Acked-by: Rafael J. Wysocki (Intel) <rafael@kernel.org> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Link: https://lore.kernel.org/r/20261001142341.2934582-2-mario.limonciello@amd.com Signed-off-by: Mario Limonciello <superm1@kernel.org> |
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|
Mario Limonciello
|
62d6cb1f7d |
ACPI: Add stub for acpi_find_child_device()
Provide a NULL-returning stub when CONFIG_ACPI is disabled so callers can be compiled without ACPI support. Reported-by: Arnd Bergmann <arnd@arndb.de> Closes: https://lore.kernel.org/linux-sound/20260925131104.118993-1-arnd@kernel.org/ Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Link: https://patch.msgid.link/20260925162628.4142365-1-mario.limonciello@amd.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Robin Murphy
|
0fa8ad52b6 |
ACPI: bus: Provide !ACPI stub for acpi_device_uid()
While the likes of acpi_dev_uid_to_integer() and acpi_dev_uid_match() already have stubs for !ACPI, the basic acpi_device_uid() getter does not. Although calls in portable drivers should already be conditional on a valid acpi_device in a manner which would usually lead to compile- time elimination anyway, add a stub for the sake of completeness. Signed-off-by: Robin Murphy <robin.murphy@arm.com> [ rjw: Subject tweak ] Link: https://patch.msgid.link/8325277ff0484ab869fecf662a7ea356cd00bcde.1790090794.git.robin.murphy@arm.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Rafael J. Wysocki
|
e7280ab196 |
ACPI: bus: Use acpi/acpi_bus.h without CONFIG_ACPI
Corrently acpi/acpi_bus.h is included in linux/acpi.h only if CONFIG_ACPI is set, but it contains declarations that are useful otherwise too. For consistency, modify linux/acpi.h to always include acpi/acpi_bus.h and update the latter to avoid exposing too much when CONFIG_ACPI is not set. Since acpi_has_method() is called from some code build when CONFIG_ACPI is unset, add a stub for it to the !CONFIG_ACPI block in acpi/acpi_bus.h. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Sudeep Holla <sudeep.holla@kernel.org> Link: https://patch.msgid.link/3717753.iIbC2pHGDl@rafael.j.wysocki |
||
|
Christian Loehle
|
4bcc60d326 |
ACPI: CPPC: Accept requests to retain immutable autonomous selection
ACPI permits Autonomous Selection Enable to be Integer 1 when the platform always selects performance autonomously. cppc_get_auto_sel() returns that value, but cppc_set_auto_sel() rejects the Integer even when asked to keep autonomous selection enabled. AMD shared-memory initialization consequently fails in active or guided mode after successfully reading the capability. Accept a request to keep this immutable field enabled without issuing a register access. Expose the immutable encoding to callers, separately from the current value of a writable register. Before an AMD shared-memory transition to passive mode, reject immutable autonomous selection on any present CPU. Otherwise a guided-to-passive transition ignores the failed disable and reports the wrong mode, while active-to-passive unregisters the working driver before passive policy initialization fails. Check under the driver mode lock before invoking either transition, including known offline CPUs. Serialize this capability query with descriptor publication and removal. ACPI processor removal drops the descriptor before taking the CPU hotplug write lock, so the caller's cpus_read_lock() alone cannot protect the lookup. Unpublish under the same mutex before releasing a descriptor, including when adding its kobject fails. The cppc-cpufreq auto_select attribute can also request one while autonomous selection is already enabled. If the subsequent bounds update fails, its rollback requests zero and clears the cached mode regardless of the previous state. For an immutable field the disable request fails, leaving the cached mode wrong. Save and restore the previous mode instead. This also avoids disabling an already-enabled writable control on that error path. Fixes: |
||
|
Christian Loehle
|
908a87126a |
ACPI: CPPC: Validate PCC overlaps across processors
PCC shared-memory offsets are physical within a subspace, but the
existing overlap check stops at one _CPC package. Two processors can
therefore pass probe with writable ranges which overlap in the same PCC
subspace.
This is unsafe in the performance path, where CPUs may stage requests
concurrently while holding the shared side of pcc_lock. Partially
overlapping stores can construct a payload which belongs to neither
request before a doorbell submits it.
Index retained PCC byte ranges by subspace and physical interval. The
registry checks entries within the new descriptor as well as other CPUs,
replacing the separate same-descriptor PCC overlap pass. Permit
read-only overlap and exact aliases of the same logical CPPC entry. The
per-subspace payload lock serializes each exact-alias field store,
including multi-byte fields copied with byte-oriented I/O. Reject every
other overlap involving a writable entry.
Each CPC descriptor owns its interval records. Remove them when processor
teardown unpublishes the descriptor and on probe failure.
Fixes:
|
||
|
Christian Loehle
|
09d911c996 |
ACPI: CPPC: Reject direct reads of write-only controls
Between _CPC revision 3 and revision 4, Desired Performance changed from
Read/Write to Write. Revision 4 also added the write-only OSPM Nominal
Performance control. ACPI 6.6 section 4.6.3 says reads of write-only bit
positions produce undefined results.
The public Desired Performance helper already rejects revision-4 readback,
but the common register accessor still permits either write-only control to
be read. Move the check into the common accessor and reject both controls
there, so callers cannot consume undefined values.
A partial SystemMemory field still makes cpc_write() read its complete
access unit to preserve bits outside the field. MASK_VAL_WRITE() replaces
every bit of the field being written, so that field's undefined readback is
not propagated. However, another writer sharing the access unit would
preserve and replay the write-only field when performing its own RMW.
Reject such pairs; a partial write-only field may share its access unit
only with disjoint read-only fields.
Also reject readable fields whose logical bits overlap a write-only field,
even if the write-only descriptor is retained as an inaccessible range.
Reading the containing access unit is safe when the undefined bits are
masked out, but an overlapping read field would expose them to callers.
Apply this check before the no-writer shortcut, and reserve the complete
known access range when a write-only field has no usable Bit Width.
Keep an invalid but locatable write-only SystemMemory descriptor
represented during overlap validation, but mark it unreadable and
unwritable. Otherwise a neighbouring RMW field could evade validation and
replay undefined readback into the hidden control. Conservatively claim the
larger of the declared access unit and logical field span. Check if the
writer access unit covers the write-only field so harmless asymmetric
geometries are not rejected. Preserve a decoded access-unit claim even when
the malformed Bit Width is zero, and use that claimed range when testing
whether another writer's access overlaps the hidden field.
Count only accessible descriptors as writers in the generic conflict
rules. The logical-field overlap check protects a retained field from a
full-width write, and the dedicated write-only-field check also protects it
from another writer's RMW.
Mark an inaccessible OSPM Nominal Performance control unsupported because
it is optional. Do the same for inaccessible Desired Performance while
parsing, then let the post-parse control check accept it only for immutable
autonomous selection. This preserves the autonomous-only exception without
accepting an unusable Desired control in non-autonomous mode.
Do not advertise fast switching or zero transition latency unless Desired
Performance remains writable. An inaccessible descriptor retained only for
overlap validation still carries its original address-space identity, but
cannot service a performance request.
Fixes:
|
||
|
Christian Loehle
|
2221dc547b |
ACPI: CPPC: Reject unsafe cross-CPU SystemMemory RMW
A SystemMemory CPPC field narrower than its access unit needs a
read-modify-write operation. The per-CPC-descriptor lock cannot serialize
access units described by different processors, so concurrent writers can
lose updates. _PSD domains do not define physical register ownership.
Track SystemMemory access units in a probe-time interval tree and reject
cross-descriptor partial writers sharing an access unit. Allow exact
aliases only for aligned native-width accesses to the same logical field.
Reject overlapping writable logical fields and full-width writes which
would overwrite another field. Disjoint read-only fields may share a larger
read access unit with a writer.
Within one descriptor, mark both overlapping accesses for the RMW lock,
including a full-width byte beside a wider partial field. Count only
controls written by the CPPC library as competing writers, so the unused
OSPM Nominal Performance control does not trigger a writer conflict.
Mark successful relaxed MMIO writes pending before releasing the raw
spinlock. On architectures which need an MMIO write barrier during lock
handoff, raw_spin_unlock_irqrestore() then orders the write before the next
writer enters the RMW critical section.
Validate the GAS geometry and supported access widths. Require natural
alignment where the architecture's MMIO accessors need it. Exact writable
aliases require alignment on x86 too, because an unaligned instruction need
not be one indivisible device transaction.
Keep validation results separate from the probe return value, so a
successful geometry check cannot make a later mapping failure return
success. Remove the interval records during teardown and probe rollback.
Fixes:
|
||
|
Christian Loehle
|
32299b29a8 |
ACPI: CPPC: Validate _CPC entry and control semantics
Writable _CPC controls are Register descriptors encoded as Buffer objects.
Integer entries represent fixed values or legacy placeholders for
unsupported optional registers; Autonomous Selection Integer 1 is the
special immutable form which enables operation without Desired Performance.
The parser accepts arbitrary object types and cpc_write() assumes that its
argument contains a GAS. Malformed firmware can therefore make it interpret
an Integer union member as a register.
Validate the portion of each encoding consumed by the driver: bound Integer
capabilities stored in u32 fields to U32_MAX, and require Buffer entries to
start with a complete Generic Register descriptor with the expected header.
Do not restrict an Integer Counter Wraparound Time. Both AML Integers and
the kernel interface are 64-bit, despite the DWORD annotation in the ACPI
table. Continue tolerating Integer 0 placeholders for absent optional
Buffer registers to avoid breaking legacy platforms. Report their invalid
encoding as a firmware bug. Retain type checks in cpc_write() as defense in
depth. Reject an attempt to disable immutable Autonomous Selection instead
of silently applying only the EPP part of the request.
Capability registers are read into u64 temporaries but exposed through u32
fields. Reject values above U32_MAX instead of allowing them to be
truncated. In particular, a truncated Highest Performance value can become
a zero divisor in the performance-to-frequency conversion. Enforce the
required ordering from Highest through Nominal, Lowest Nonlinear, and
Lowest Performance, and constrain a present Guaranteed Performance to the
inclusive Lowest-to-Nominal range. Also reject reversed frequency anchors
and unequal frequency anchors with identical performance anchors. Those
invalid tuples otherwise make affine-conversion differences wrap or divide
by zero.
Check mandatory object presence separately from the Integer-zero convention
for absent optional fields.
Reject Minimum and Maximum Performance readbacks above U32_MAX before
narrowing them. A truncated minimum could otherwise become an explicit
zero update when cppc-cpufreq writes the initial controls back to the
platform.
Minimum Performance also defines zero as a real no-limit value, but the
exported cppc_set_perf() interface historically used zero to omit a bound.
Add a minimum-valid flag so callers can request zero without changing that
legacy convention. Set it when reading a supported Minimum Performance
register, preserving zero across cppc-cpufreq initialization and exit.
Keep zero-as-omit for Maximum Performance, whose no-limit encoding is all
ones, not zero. Initialize amd-pstate's control structure with the new flag
clear: its shared-memory backend does not record bios_min_perf, so its
zero-valued restore requests must remain omitted.
Performance Limited is listed as a required Buffer, but the interface does
not depend on it to control performance and the specification permits a
platform with no limiting indication to always report zero. Preserve
compatibility with firmware that represents that case using a NULL register
descriptor instead of disabling CPPC entirely.
Emit an error when a present _CPC package fails parsing or initialization
so such firmware and resource failures no longer silently suppress cpufreq.
Initialize malformed-package failures to -EINVAL and preserve specific
allocation, mapping, and unsupported-access errors in that diagnostic.
Fixes:
|
||
|
Rafael J. Wysocki
|
d1b25eb2d8 |
ACPI: processor: thermal: Use more suitable cooling device data
Instead of passing an ACPI device object pointer as devdata to thermal_cooling_device_create(), make acpi_processor_thermal_init() pass a pointer to the struct acpi_processor representing the given CPU to it, which allows the callback functions in processor_cooling_ops to be simplified and the second argument of acpi_processor_thermal_init() and acpi_processor_thermal_exit() to be dropped. No intentional functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Armin Wolf <W_Armin@gmx.de> Link: https://patch.msgid.link/6192780.MhkbZ0Pkbq@rafael.j.wysocki |
||
|
Rafael J. Wysocki
|
bb03cfceb1 |
ACPI: processor: thermal: Use thermal_cooling_device_create()
Instead of using thermal_cooling_device_register() for registering a cooling device in the ACPI processor driver, make it use thermal_cooling_device_create() and pass a pointer to the processor device representing the given CPU to that function as the cooling device's parent. That will cause the cooling device's sysfs directory to be created under the parent's sysfs directory (among other things). Since creating a class device under a parent causes a "device" symbolic link from the sysfs directory of the class device to the sysfs directory of the parent to appear automatically, remove the code creating the "device" symbolic link from the sysfs directory of the cooling device in question to the sysfs directory of the parent's companion ACPI device. That ACPI device is reachable through the "firmware_node" symbolic link in the parent's sysfs directory regardless. Moreover, since the cooling device is now located in sysfs under its parent and it can be easily identified as a cooling device, there is no need to create a "thermal_cooling" symbolic link from its parent's ACPI companion to it. Accordingly, also remove the code creating that symbolic link. While at it, check for error pointer values in addition to checking for NULL in acpi_processor_thermal_exit() to avoid dereferencing them mistakenly. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Armin Wolf <W_Armin@gmx.de> [ rjw: Corrected typo in the changelog ] Link: https://patch.msgid.link/2362345.iZASKD2KPV@rafael.j.wysocki Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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|
Rafael J. Wysocki
|
6935468526 |
ACPI: glue: Fix up and adjust acpi_unbind_one()
Since none of the acpi_unbind_one() callers check its return value and
it always returns 0 anyway, make it void.
Also notice that unlocking physical_node_lock for the given ACPI device
should be carried out before dropping the reference to it in case that
reference is the last one (highly unlikely), so rearrange the code to
make that happen.
Fixes:
|
||
|
Andy Shevchenko
|
f8113f311c |
ACPI: bus: Reduce runtime memory footprint of struct acpi_device
The ACPI handle is heavily used by the ACPI code. Making it as the first member in the struct acpi_device reduces code size. For instance, the drivers/acpi/scan.o (with `make allyesconfig`) gives this statistics: add/remove: 0/0 grow/shrink: 3/8 up/down: 50/-169 (-119) Function old new delta acpi_device_add 2294 2319 +25 acpi_add_single_object 6523 6544 +21 acpi_dev_get_next_consumer_dev 602 606 +4 acpi_tie_acpi_dev 169 165 -4 acpi_scan_drop_device 319 315 -4 acpi_dev_clear_dependencies 1151 1147 -4 acpi_bus_attach 2898 2894 -4 acpi_dma_get_range 1420 1415 -5 acpi_init_device_object 5497 5485 -12 acpi_bus_check_add 1940 1923 -17 acpi_device_hotplug 3407 3288 -119 Total: Before=77509, After=77390, chg -0.15% Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> [ rjw: Changelog tweaks ] Link: https://patch.msgid.link/20260909163918.368017-1-andriy.shevchenko@linux.intel.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Mario Limonciello
|
3107a9a324 |
ACPI: utils: Ignore leading root scope prefix in string _UID match
Firmware may express an ACPI namespace path used as a _UID with or
without the leading root scope character ('\'). For example, an AMD
IVRS IVHD ACPI HID device entry may carry a character UID of
"\_SB.MHSP" while the corresponding device's _UID evaluates to
"_SB.MHSP" (or vice versa). This semantic difference is due to how
Windows PnP enumerates and uses devices.
acpi_str_uid_match() compared the two strings verbatim, so such
entries failed to match on the UID even though they refer to the same
object. In the AMD IOMMU case (get_acpihid_device_id()) this caused
the exact HID+UID match to be missed and the code to fall through to
the HID-only path, spuriously raising a FW_BUG.
Skip a single leading '\' on either string before comparing so that
paths that differ only by the root scope prefix are treated as a
match. The integer _UID path is unaffected.
[ rjw: It is sad that making this change needed to be considered at all.
That being said, it is also rather unlikely that someone will use a
leading backslash as the only difference to distinguish one UID
string from antother, so this change is unlikely to break anything. ]
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
[ rjw: Added separator line to a kerneldoc comment ]
[ rjw: Droppend Link: tag with a limited access target ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
||
|
Rafael J. Wysocki
|
811268084e |
ACPI: PM: Move acpi_bus_init_power() declaration to internal header file
Since acpi_bus_init_power() is only used internally in the core ACPI device enumeration and power management code, it need not be visible outside, so move its declaration to an internal header file. No functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Tested-by: Peixin Xie <peixin.xie@linux.spacemit.com> Tested-by: Sakari Ailus <sakari.ailus@linux.intel.com> Link: https://patch.msgid.link/3079955.e9J7NaK4W3@rafael.j.wysocki Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Dave Jiang
|
8bf5881531 |
ACPI: APEI: GHES: Validate CXL protocol error section length before RAS cap copy
cxl_cper_setup_prot_err_work_data() locates the RAS Capability block at
prot_err + sizeof(*prot_err) + dvsec_len and copies it, but dvsec_len is
firmware controlled and never validated, so it can point the copy outside
the section.
Extend cxl_cper_sec_prot_err_valid() to check that the section can hold
the header, and that the header, DVSEC and RAS Capability block together
fit the reported section length.
Reported-by: sashiko-bot@kernel.org
Link: https://sashiko.dev/#/patchset/20260617-topics-ahmtib01-ras_ffh_arm_internal_review-v6-0-91f725174aa0@arm.com?part=6
Link: https://lore.kernel.org/linux-cxl/20260709165457.8BA181F000E9@smtp.kernel.org/
Fixes:
|
||
|
Dave Jiang
|
179ef6d7f9 |
ACPI: extlog: Defer CXL protocol error handling to avoid lock inversion
extlog_print() calls cxl_cper_handle_prot_err() synchronously while the MCE notifier chain rwsem is held, and that path takes the PCI device_lock via guard(device)(). The probe path takes the two in the opposite order, holding device_lock while mce_register_decode_chain() takes the rwsem, so they can deadlock AB-BA. ghes.c already avoids this by posting protocol errors to a kfifo and handling them from a workqueue via cxl_cper_post_prot_err(). Export that function and call it instead. Declare it with the other CONFIG_ACPI_APEI_GHES exports rather than at the end of the header. No #else stub: ACPI_EXTLOG selects ACPI_APEI_GHES, so the only caller cannot exist without it. Reported-by: sashiko-bot@kernel.org Closes: https://lore.kernel.org/linux-cxl/20260709165457.8BA181F000E9@smtp.kernel.org/ Reviewed-by: Alison Schofield <alison.schofield@intel.com> Reviewed-by: Shuai Xue <xueshuai@linux.alibaba.com> Reviewed-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com> Reviewed-by: Hanjun Guo <guohanjun@huawei.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://patch.msgid.link/20260904172337.1409775-5-dave.jiang@intel.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Rafael J. Wysocki
|
4a819ee5f2 |
ACPI: bus: Drop two fields from struct acpi_device_pnp
There are two fields in struct acpi_device_pnp, device_name and device_class, that were supposed to be populated and used by device drivers, but they have never been used consistently and now they are only set for the bus object in acpi_set_pnp_ids() (and never read afterward). Drop them along with all of the associated symbols except for MAX_ACPI_CLASS_NAME_LEN and the acpi_device_class typedef that are used by the ACPI netlink messaging code. Move those two definitions closer to the struct acpi_bus_event that refers to the acpi_device_class type. No intentional functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Hans de Goede <johannes.goede@oss.qualcomm.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/6314925.lOV4Wx5bFT@rafael.j.wysocki |
||
|
Linus Torvalds
|
3382bfbca5 |
More ACPI support updates for 7.3-rc1
- Update MAINTAINERS, CREDITS and ACPI subsystem documentation to
reflect recent changes in the upstream ACPICA project (Rafael
Wysocki)
- Prevent the core ACPI enumeration code from combining device
resources that overlap completely in order to avoid resource
conflicts during platform device registration because there are
drivers that expect such resources to be present (Rafael Wysocki)
- Defer device power initialization during ACPI-based device
enumeration to the point when the given device is known to be present
and functional and all of its dependencies have been met (Peixin Xie)
- Fix bus ID cleanup on device_add() failures during ACPI device object
registration (Hongyan Xu)
- Introduce a new helper function for looking up the primary "physical"
device for a given ACPI device object and update the core ACPI device
enumeration code to use that function (Rafael Wysocki)
- Protect all battery properties with a separated mutex in the ACPI
battery driver to prevent race conditions from occurring and avoid
evaluating the _BST ACPI control method multiple times in parallel
for the same battery device (Rong Zhang)
- Add DMI quirk for the Razer Blade Pro 17 early 2020 lid switch to the
ACPI button driver (Robin Everaars)
- Convert fixed clock rates in the ACPI driver for AMD SoCs (APD) to
use HZ_PER_MHZ and add a clock frequency for the HJMC01 I2C
controller to it (Hongnan Li and Xiangyang Yu)
- Fix a stack buffer overflow in query_capability() in the ACPI
platform firmware runtime update driver (Anirudh Prasad)
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Merge tag 'acpi-7.3-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more ACPI support updates from Rafael Wysocki:
"These update documentation to reflect recent changes in the upstream
ACPICA project, fix issues in the core ACPI device enumeration code
(one of which has been introduced recently), improve the primary
"physical" device lookup for ACPI device objects in that code, and
update ACPI device drivers:
- Update MAINTAINERS, CREDITS and ACPI subsystem documentation to
reflect recent changes in the upstream ACPICA project (Rafael
Wysocki)
- Prevent the core ACPI enumeration code from combining device
resources that overlap completely in order to avoid resource
conflicts during platform device registration because there are
drivers that expect such resources to be present (Rafael Wysocki)
- Defer device power initialization during ACPI-based device
enumeration to the point when the given device is known to be
present and functional and all of its dependencies have been met
(Peixin Xie)
- Fix bus ID cleanup on device_add() failures during ACPI device
object registration (Hongyan Xu)
- Introduce a new helper function for looking up the primary
"physical" device for a given ACPI device object and update the
core ACPI device enumeration code to use that function (Rafael
Wysocki)
- Protect all battery properties with a separated mutex in the ACPI
battery driver to prevent race conditions from occurring and avoid
evaluating the _BST ACPI control method multiple times in parallel
for the same battery device (Rong Zhang)
- Add DMI quirk for the Razer Blade Pro 17 early 2020 lid switch to
the ACPI button driver (Robin Everaars)
- Convert fixed clock rates in the ACPI driver for AMD SoCs (APD) to
use HZ_PER_MHZ and add a clock frequency for the HJMC01 I2C
controller to it (Hongnan Li and Xiangyang Yu)
- Fix a stack buffer overflow in query_capability() in the ACPI
platform firmware runtime update driver (Anirudh Prasad)"
* tag 'acpi-7.3-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: button: Add DMI quirk for Razer Blade Pro 17 early 2020 lid switch
ACPI: scan: Do not combine resources that overlap completely
ACPI: Update upstream ACPICA repository URL in documentation
ACPI: Update MAINTAINERS entry for ACPICA
ACPI: Add Bob Moore to CREDITS
ACPI: pfr_update: fix stack buffer overflow in query_capability()
ACPI: scan: Defer device power initialization
ACPI: APD: Add clock frequency for HJMC01 I2C controller
ACPI: APD: Convert fixed clock rates to use HZ_PER_MHZ
ACPI: scan: Use acpi_bus_get_primary_device()
ACPI: platform: Use acpi_bus_get_primary_device()
ACPI: bus: Introduce acpi_bus_get_primary_device()
ACPI: scan: fix bus ID cleanup on device_add() failures
ACPI: battery: Protect all properties with a separated mutex
|
||
|
Rafael J. Wysocki
|
bbc981bd54 |
Merge branch 'acpi-bus'
Merge changes related to primary "physical" device lookup for a given ACPI device object that include the introduction of a new lookup helper function and core ACPI device enumeration code updates putting that new function to use (Rafael Wysocki) * acpi-bus: ACPI: scan: Use acpi_bus_get_primary_device() ACPI: platform: Use acpi_bus_get_primary_device() ACPI: bus: Introduce acpi_bus_get_primary_device() |
||
|
Linus Torvalds
|
59e6295fac |
Driver core changes for 7.3-rc1
- container_of:
- Apply typeof_member(), remove the local __mptr variable to eliminate
variable shadowing warnings on nested container_of() calls, and remove
unnecessary parentheses.
- core:
- Add driver name to probe debug print for initcall_debug.
- Avoid repeatedly printing the same 'Fixed dependency cycle' log.
- Unwind device_add() on attribute creation failure in
attribute_container_add_class_device().
- Remove statistics group if encryption group creation fails in
transport_add_class_device().
- debugfs:
- Fix lockdown check for mmap_prepare().
- Warn if file creation failed due to uninitialized debugfs.
- device property:
- Implement fw_devlink support for software nodes by adding
software_node_add_links(), which creates fwnode links from DEV_PROP_REF
properties to enable automatic probe ordering. Add kunit-managed fwnode
helpers and test coverage.
- Fix infinite loop in fwnode_for_each_child_node() when the secondary fwnode
has more than one child. Add test cases.
- Fix out-of-bounds access in software_node_get_reference_args() when called
with index -1 (UINT_MAX).
- Refactor to use RAII approach with __free().
- Add Bartosz Golaszewski as software node reviewer.
- firmware loader:
- Fix race where a sysfs fallback request can complete before being queued as
pending, leading to a use-after-free on the next fallback request.
- Reject 0-size built-in firmware and fail the build on empty firmware files
in CONFIG_EXTRA_FIRMWARE.
- kobject:
- Provide __KOBJ_ATTR() and __KOBJ_ATTR_RO/WO() initialization macros and
allow the constification of kobject attributes, enabling them to reside in
read-only memory.
- platform:
- Provide platform_device_set_of_node(), platform_device_set_fwnode(), and
platform_device_set_of_node_from_dev() helpers that encapsulate firmware
node reference counting for dynamically allocated platform devices. Convert
all in-tree users that manually assigned dev.of_node or dev.fwnode, fixing a
pre-existing refcount bug in powermac. Switch to counting references of all
firmware node types, not only OF nodes.
- Unify the release path for dynamically allocated platform devices by
removing platform_device_release_full(). Amend the fwnode setter API
contract to warn if a primary software node is overwritten. Add KUnit tests
for correct software node removal on device unregistration.
- Rust:
- Auxiliary:
- Add registration_data_with() closure-based API for invariant ForLt types.
- Debugfs:
- Migrate BinaryWriter and BinaryReaderMut trait requirements from
kernel::transmute traits to zerocopy traits.
- Device:
- Add BoundInternal device context and InternalBoundContext trait for bus
abstractions that need internal access to a bound device.
- Make the lifetime on Core and CoreInternal invariant to prevent coercion
to shorter lifetimes.
- Devres:
- Fix race between concurrent revokers where the losing revoker could return
before the winning revoker finished dropping the inner data, causing
use-after-free.
- Ensure revocation is complete before the device finishes unbinding by
making the synchronization bidirectional.
- Add DevresLt<F: ForLt>, a wrapper around Devres that shortens 'static back
to the caller's borrow scope. Implement ForLt and CovariantForLt for Bar,
IoMem, and ExclusiveIoMem.
- Driver:
- Switch from index-based to pointer-based device ID info lookup, storing
static references in driver_data. Centralize device ID handling in
device_id.rs, removing the open-coded ACPI/OF matching logic and duplicate
ID table from driver.rs.
- I/O:
- Make I/O regions typed (with a dynamically-sized Region type for the
existing untyped case), create view types representing subregions of a
mapped I/O region, and add io_project!() for safely creating subviews.
- Split Io into a base trait (IoBase) and an extension trait (Io) with a
blanket implementation, preventing implementers from overriding provided
methods that unsafe code relies on.
- Add a SysMem backend for shared system memory with volatile access, and
make Coherent implement Io via an I/O view type. Add IoSysMap as sum type
of Mmio and SysMem. Add copying methods (memcpy_{from,to}io()) and
read_val()/write_val() for typed access.
- Replace dma_read!()/dma_write!() with io_read!()/io_write!() for
primitives and copying methods for aggregates; drop the old macros.
Convert nova-core to use I/O projection.
- Fix internal shortcut rule dispatch in the register!() macro, remove
unused rule arguments, and use path fragments for alias destinations.
- IRQ:
- Make irq::Registration compatible with lifetime-bound drivers by
removing the 'static bound on Handler/ThreadedHandler and
replacing Devres<RegistrationInner> with direct
request_irq()/free_irq() calls. Handlers can now directly own
lifetime-bound device resources.
- PCI:
- Convert IrqVectorRegistration to a lifetime-annotated owning type,
giving drivers explicit control over the allocation lifetime.
IrqVector embeds a resolved IrqRequest, making the conversion
infallible. Remove the redundant
request_irq()/request_threaded_irq() wrappers from pci::Device.
- Add pci_irq_type() C helper and expose it via irq_type() on
IrqVectorRegistration and IrqVector, returning PCI_IRQ_MSIX, PCI_IRQ_MSI,
or PCI_IRQ_INTX.
- Mark pci::Device refcount methods inline.
- Serdev:
- Add Rust abstractions for the serial device bus, including serdev::Driver
trait, serdev::Device wrapping struct serdev_device, and serdev::Adapter
implementing RegistrationOps. Includes a sample driver. Markus Probst
takes over as serdev maintainer for both C and Rust code.
- Misc:
- Split ForLt into a base trait (providing the Of<'a> GAT) and an unsafe
CovariantForLt subtrait guaranteeing covariance, enabling invariant types
(e.g. those containing Mutex<&'bound T>) to participate in the ForLt
abstraction.
- Fix Coherent read past EOF returning -ERANGE instead of zero.
- Fix firmware example UB by avoiding null-pointer ARef.
- misc:
- Avoid iattr allocation in kernfs listxattr by using kernfs_iattrs_noalloc().
- Unregister SoC bus on early device registration failure.
- Remove unused DMA_FENCE_TRACE Kconfig symbol.
- Fix /sys/module path in comment.
- Refactor ISA bus init to remove nested blocks.
- Remove redundant nodemask clears in numa_init().
- Add kernel-doc for fwnode_operations and sys_soc.h, mark internal property
data as private for kernel-doc, and add property.h/fwnode.h to driver-api
infrastructure docs.
- Add MAINTAINERS entry for sys_soc.h.
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Merge tag 'driver-core-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core updates from Danilo Krummrich:
"container_of:
- Apply typeof_member(), remove the local __mptr variable to
eliminate variable shadowing warnings on nested container_of()
calls, and remove unnecessary parentheses
core:
- Add driver name to probe debug print for initcall_debug
- Avoid repeatedly printing the same 'Fixed dependency cycle' log
- Unwind device_add() on attribute creation failure in
attribute_container_add_class_device()
- Remove statistics group if encryption group creation fails in
transport_add_class_device()
debugfs:
- Fix lockdown check for mmap_prepare()
- Warn if file creation failed due to uninitialized debugfs
device property:
- Implement fw_devlink support for software nodes by adding
software_node_add_links(), which creates fwnode links from
DEV_PROP_REF properties to enable automatic probe ordering. Add
kunit-managed fwnode helpers and test coverage
- Fix infinite loop in fwnode_for_each_child_node() when the
secondary fwnode has more than one child. Add test cases
- Fix out-of-bounds access in software_node_get_reference_args() when
called with index -1 (UINT_MAX)
- Refactor to use RAII approach with __free()
- Add Bartosz Golaszewski as software node reviewer
firmware loader:
- Fix race where a sysfs fallback request can complete before being
queued as pending, leading to a use-after-free on the next fallback
request
- Reject 0-size built-in firmware and fail the build on empty
firmware files in CONFIG_EXTRA_FIRMWARE
kobject:
- Provide __KOBJ_ATTR() and __KOBJ_ATTR_RO/WO() initialization macros
and allow the constification of kobject attributes, enabling them
to reside in read-only memory
platform:
- Provide platform_device_set_of_node(), platform_device_set_fwnode(),
and platform_device_set_of_node_from_dev() helpers that encapsulate
firmware node reference counting for dynamically allocated platform
devices
Convert all in-tree users that manually assigned dev.of_node or
dev.fwnode, fixing a pre-existing refcount bug in powermac. Switch
to counting references of all firmware node types, not only OF
nodes
- Unify the release path for dynamically allocated platform devices
by removing platform_device_release_full(). Amend the fwnode setter
API contract to warn if a primary software node is overwritten. Add
KUnit tests for correct software node removal on device
unregistration
Rust:
- Auxiliary:
- Add registration_data_with() closure-based API for invariant
ForLt types
- Debugfs:
- Migrate BinaryWriter and BinaryReaderMut trait requirements
from kernel::transmute traits to zerocopy traits
- Device:
- Add BoundInternal device context and InternalBoundContext trait
for bus abstractions that need internal access to a bound
device.
- Make the lifetime on Core and CoreInternal invariant to prevent
coercion to shorter lifetimes
- Devres:
- Fix race between concurrent revokers where the losing revoker
could return before the winning revoker finished dropping the
inner data, causing use-after-free.
- Ensure revocation is complete before the device finishes
unbinding by making the synchronization bidirectional.
- Add DevresLt<F: ForLt>, a wrapper around Devres that shortens
'static back to the caller's borrow scope. Implement ForLt and
CovariantForLt for Bar, IoMem, and ExclusiveIoMem
- Driver:
- Switch from index-based to pointer-based device ID info lookup,
storing static references in driver_data. Centralize device ID
handling in device_id.rs, removing the open-coded ACPI/OF
matching logic and duplicate ID table from driver.rs
- I/O:
- Make I/O regions typed (with a dynamically-sized Region type
for the existing untyped case), create view types representing
subregions of a mapped I/O region, and add io_project!() for
safely creating subviews.
- Split Io into a base trait (IoBase) and an extension trait (Io)
with a blanket implementation, preventing implementers from
overriding provided methods that unsafe code relies on.
- Add a SysMem backend for shared system memory with volatile
access, and make Coherent implement Io via an I/O view type.
Add IoSysMap as sum type of Mmio and SysMem. Add copying
methods (memcpy_{from,to}io()) and read_val()/write_val() for
typed access.
- Replace dma_read!()/dma_write!() with io_read!()/io_write!()
for primitives and copying methods for aggregates; drop the old
macros. Convert nova-core to use I/O projection.
- Fix internal shortcut rule dispatch in the register!() macro,
remove unused rule arguments, and use path fragments for alias
destinations
- IRQ:
- Make irq::Registration compatible with lifetime-bound drivers
by removing the 'static bound on Handler/ThreadedHandler and
replacing Devres<RegistrationInner> with direct
request_irq()/free_irq() calls. Handlers can now directly own
lifetime-bound device resources
- PCI:
- Convert IrqVectorRegistration to a lifetime-annotated owning
type, giving drivers explicit control over the allocation
lifetime. IrqVector embeds a resolved IrqRequest, making the
conversion infallible. Remove the redundant
request_irq()/request_threaded_irq() wrappers from pci::Device.
- Add pci_irq_type() C helper and expose it via irq_type() on
IrqVectorRegistration and IrqVector, returning PCI_IRQ_MSIX,
PCI_IRQ_MSI, or PCI_IRQ_INTX.
- Mark pci::Device refcount methods inline
- Serdev:
- Add Rust abstractions for the serial device bus, including
serdev::Driver trait, serdev::Device wrapping struct
serdev_device, and serdev::Adapter implementing
RegistrationOps. Includes a sample driver. Markus Probst takes
over as serdev maintainer for both C and Rust code
- Misc:
- Split ForLt into a base trait (providing the Of<'a> GAT) and an
unsafe CovariantForLt subtrait guaranteeing covariance,
enabling invariant types (e.g. those containing Mutex<&'bound T>)
to participate in the ForLt abstraction.
- Fix Coherent read past EOF returning -ERANGE instead of zero.
- Fix firmware example UB by avoiding null-pointer ARef
misc:
- Avoid iattr allocation in kernfs listxattr by using
kernfs_iattrs_noalloc().
- Unregister SoC bus on early device registration failure.
- Remove unused DMA_FENCE_TRACE Kconfig symbol.
- Fix /sys/module path in comment.
- Refactor ISA bus init to remove nested blocks.
- Remove redundant nodemask clears in numa_init().
- Add kernel-doc for fwnode_operations and sys_soc.h, mark
internal property data as private for kernel-doc, and add
property.h/fwnode.h to driver-api infrastructure docs.
- Add MAINTAINERS entry for sys_soc.h"
* tag 'driver-core-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (129 commits)
rust: pci: expose the allocated interrupt type
PCI: Add pci_irq_type() to query the allocated interrupt type
rust: pci: remove request_irq() and request_threaded_irq() from Device
rust: pci: resolve IRQ in index() and embed IrqRequest in IrqVector
rust: pci: convert IrqVectorRegistration to a lifetime-managed owning type
kernfs: avoid iattr allocation in listxattr
rust: serdev: use ThisModule::as_ptr() instead of field access
ACPI/IORT: use platform_device_set_fwnode()
ACPI/APMT: use platform_device_set_fwnode()
firmware_loader: do not queue completed sysfs fallback requests
rust: pci: Mark Device refcount methods inline
rust: irq: make Registration compatible with lifetime-bound drivers
rust: net/phy: remove expansion from doc
rust: dma: return zero for Coherent reads past EOF
rust: io: register: use path fragment for alias destination
rust: io: register: remove unused rule arguments
rust: io: register: dispatch shortcut rules internally
MAINTAINERS: add sys_soc.h to DRIVER CORE
rust: debugfs: remove unsafe blocks from traits impl for Vec
rust: debugfs: migrate debugfs traits requirements to zerocopy
...
|
||
|
Linus Torvalds
|
85cdaca697 |
arm64 updates for 7.3
ACPI:
- Combine reads of AMU counters into a single FFH feedback counter op.
Confidential computing:
- Fix smp_processor_id() in preemptible context when retrieving an
attestation token inside a realm.
- Convert pKVM over to a "CC platform".
- Clean-up our SWIOTLB configuration in preparation for reworking the
handling of encrypted/decryped DMA buffers in the dma-mapping tree.
CPU errata handling:
- Work around broken device memory ordering on NVIDIA Olympus cores.
- Fix broken 'nospectre_bhb' command-line option.
- Select the idle loop backend instruction on the command-line.
CPU features:
- Replace our BBML2-noabort feature with the new architectural BBML3
feature.
- Disable in-kernel BTI for recent versions of Clang due to issues with
livepatch that are still being investigated.
- Clean-up documentation describing which ID register fields are exposed
to userspace.
Interrupts:
- Preliminary work towards supporting FEAT_NMI, which cleans up our
IRQ entry code and fixes some latent issues with pseudo-NMI.
- Support for an SDEI backend to trigger an NMI backtrace.
Memory management:
- Treat all devices as coherent when CLIDR_EL1.LoC == 0.
- Fix no-map handling of sub-page-sized regions.
- Second attempt at unmapping the linear aliases of the kernel data and
bss sections.
- Fix EFI runtime calls when software-PAN is enabled.
Miscellaneous:
- Add Mark Rutland as a reviewer!
- Tidy-up our futex cmpxchg logic when using the new LSUI instructions.
- Drop the requirement on DYNAMIC_FTRACE_WITH_CALL_OPS when selecting
HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS.
- Fix a false-positive KCSCAN splat in the delay loop.
- Use a portable typedef for 128-bit scalar types in our UAPI headers.
- Non-critical fixes for Sashiko reports all over.
MPAM:
- Hook MPAM memory bandwidth counters into resctrl's counter assignment
interface.
- Fix a quirk in the MPAM bandwidth counting on Nvidia T241 so that it
also applies to 63 bit counters.
Perf:
- Workarounds for hardware issues in the CMN-S3 PMU (Graviton 5) and CPU
PMU (NVIDIA Olympus again!)
- Add support for the DDR PMU on Marvell CN20K SoCs.
- Add support for Picoheart implementations of the DCW PCIe PMU.
- Add support for Channel/Rank/Bank filtering in the CXL PMU driver.
- Add support for 64-bit counters in the CSPMU device.
- Add support for revision 2 of the CMN S3 PMU.
Ptrace:
- Fix a decade-old bug in our handling of seccomp and tracing on syscall
entry.
- Fix regset handling for inactive SVE and SSVE registers.
Selftests
- Add some tests for the decade-old bug that we just tried to fix in our
syscall entry path.
- Fix SVE test crash on SME-only CPUs.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"There's a reasonable amount of stuff here, including a bunch of
updates to the perf PMU drivers and some MPAM updates to expose the
memory bandwidth counters via resctrl.
On the architecture side, some highlights include support for BBML3
and steps towards support for an architectural NMI solution, all
wrapped up in a web of fixes for latent issues identified by Sashiko.
ACPI:
- Combine reads of AMU counters into a single FFH feedback counter op
Confidential computing:
- Fix smp_processor_id() in preemptible context when retrieving an
attestation token inside a realm
- Convert pKVM over to a "CC platform"
- Clean-up our SWIOTLB configuration in preparation for reworking the
handling of encrypted/decryped DMA buffers in the dma-mapping tree
CPU errata handling:
- Work around broken device memory ordering on NVIDIA Olympus cores
- Fix broken 'nospectre_bhb' command-line option
- Select the idle loop backend instruction on the command-line
CPU features:
- Replace our BBML2-noabort feature with the new architectural BBML3
feature
- Disable in-kernel BTI for recent versions of Clang due to issues
with livepatch that are still being investigated
- Clean-up documentation describing which ID register fields are
exposed to userspace
Interrupts:
- Preliminary work towards supporting FEAT_NMI, which cleans up our
IRQ entry code and fixes some latent issues with pseudo-NMI
- Support for an SDEI backend to trigger an NMI backtrace
Memory management:
- Treat all devices as coherent when CLIDR_EL1.LoC == 0
- Fix no-map handling of sub-page-sized regions
- Second attempt at unmapping the linear aliases of the kernel data
and bss sections
- Fix EFI runtime calls when software-PAN is enabled
Miscellaneous:
- Add Mark Rutland as a reviewer!
- Tidy-up our futex cmpxchg logic when using the new LSUI
instructions
- Drop the requirement on DYNAMIC_FTRACE_WITH_CALL_OPS when
selecting HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS
- Fix a false-positive KCSCAN splat in the delay loop
- Use a portable typedef for 128-bit scalar types in our UAPI headers
- Non-critical fixes for Sashiko reports all over
MPAM:
- Hook MPAM memory bandwidth counters into resctrl's counter
assignment interface
- Fix a quirk in the MPAM bandwidth counting on Nvidia T241 so that
it also applies to 63 bit counters
Perf:
- Workarounds for hardware issues in the CMN-S3 PMU (Graviton 5) and
CPU PMU (NVIDIA Olympus again!)
- Add support for the DDR PMU on Marvell CN20K SoCs
- Add support for Picoheart implementations of the DCW PCIe PMU
- Add support for Channel/Rank/Bank filtering in the CXL PMU driver
- Add support for 64-bit counters in the CSPMU device
- Add support for revision 2 of the CMN S3 PMU
Ptrace:
- Fix a decade-old bug in our handling of seccomp and tracing on
syscall entry
- Fix regset handling for inactive SVE and SSVE registers
Selftests
- Add some tests for the decade-old bug that we just tried to fix in
our syscall entry path
- Fix SVE test crash on SME-only CPUs"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (95 commits)
arm64/efi: Avoid voluntary preemption with efi_mm installed
arm64: bti: Disable in-kernel BTI with recent versions of Clang
arm64: entry: Avoid unnecessary local_irq_disable() on kernel exit
irqchip/gic-v3: make the unmasking of pseudo-NMIs explicit when handling IRQs
arm64: Disable KCSAN instrumentation in delay.o
arm_mpam: Disable driver unbind to avoid UAF
arm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt
perf: arm_pmuv3: Zero initialize hw_id branch stack field
arm64: mm: Unmap kernel data/bss entirely from the linear map
iommu/arm-smmu-v3-sva: Use system_supports_bbml3() to detect CPU feature
perf/arm-cmn: Support CMN S3 r2
perf/arm-cmn: Plumb in new filter types
perf/arm-cmn: Refactor event filter data
perf/arm-cmn: Refactor event filter programming
perf/arm-cmn: Rename filter variables for clarity
arm64: mm: fix accidental linear mapping of no-map reserved memory
tools: Ensure tools copy of linux/filter.h exports the UAPI
kselftest/arm64: Fix abi test compilation errors
arch: arm64: add early_param idle=<wfi|yield|nop>
arm64: entry: mask DAIF before returning from C EL1 handlers
...
|
||
|
Rafael J. Wysocki
|
72530e1f72 |
ACPI: bus: Introduce acpi_bus_get_primary_device()
The function used for obtaining the first "physical" device for which the given ACPI one is the ACPI companion, acpi_get_first_physical_node(), may return a stale device pointer (mostly in theory) because acpi_unbind_one() may run as a whole after dropping the ACPI device's physical_node_lock in acpi_get_first_physical_node() and before it returns. The last reference to the "physical" device may be dropped then before the pointer to it is returned to the caller. If that happens and the acpi_get_first_physical_node() caller invokes get_device() on the pointer obtained from it, which is done by the majority of its callers, a use-after-free will occur. To prepare for addressing this problem, introduce a new function for getting the first "physical" device associated with the given ACPI one (the "primary physical device") that will also reference count the device in question before returning a pointer to it. Make that new function and acpi_get_first_physical_node() share the physical node list lookup code. No intentional functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/2843318.mvXUDI8C0e@rafael.j.wysocki |
||
|
Rafael J. Wysocki
|
fba08739e9 | Merge back ACPI bus type changes for 7.3 | ||
|
Rafael J. Wysocki
|
79a0aabd5d |
Merge branches 'acpi-scan', 'acpi-pci', 'acpi-tad' and 'acpi-apei'
Merge an ACPI device enumeration core code update, ACPI support updates related to PCI, an ACPI Time and Alarm Device (TAD) driver update and ACPI APEI updates for 7.3-rc1: - Avoid registering platform devices with resource overlaps in the ACPI core device enumeration code (Rafael Wysocki) - Clear driver_data on all paths that free acpi_pci_root in acpi_pci_root_add() (Chen Pei) - Simplify acpi_get_pci_dev() with the help of a mutex guard, introduce acpi_dev_get_pci_dev() for code that has a struct ACPI device for which it wants to get the struct pci_dev pointer of the associated PCI device, and use it in the ACPI video bus driver (Rafael Wysocki) - Avoid printing confusing _OSC messages for non-PCIe host bridges without _OSC which is a valid configuration (Kazuma Kondo) - Add locking around evaluation of ACPI control methods in the ACPI TAD driver to avoid race conditions (Rafael Wysocki) - Handle repeated SEA error storms in APEI (Junhao He) - Fix ERST timeout unit conversion in APEI (Nirmoy Das) - Fix ARM section length accounting after header in the ACPI APEI GHES driver (TanZheng) - Mark ghes_in_nmi_spool_from_list() as maybe unused (Rui Qi) * acpi-scan: ACPI: scan: Avoid registering platform devices with resource overlaps * acpi-pci: ACPI: PCI: Avoid misleading _OSC messages for non-PCIe host bridges without _OSC ACPI: video: Use acpi_dev_get_pci_dev() instead of acpi_get_pci_dev() ACPI: video: Drop backlight parent device reference later ACPI: PCI: Introduce acpi_dev_get_pci_dev() ACPI: PCI: Use a mutex guard to simplify acpi_get_pci_dev() ACPI: PCI: Clear driver_data on all paths that free the acpi_pci_root * acpi-tad: ACPI: TAD: Add locking around AML evaluations * acpi-apei: ACPI: APEI: Handle repeated SEA error storms ACPI: APEI: Fix ERST timeout unit conversion ACPI: APEI: GHES: fix ARM section length accounting after header ACPI: APEI: GHES: Mark ghes_in_nmi_spool_from_list() as maybe unused |
||
|
Danilo Krummrich
|
dbaafe9cc5 |
Linux 7.2-rc7
-----BEGIN PGP SIGNATURE----- iQFSBAABCgA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmp49yoeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiG1WIH/1SD1rNIb4Prf0C7 Rk9Hz0IZ3uYNe1Xi+Ozv3zQUuLB6d7ewl9e4zyHHYT4eeIKvBZv9jtIF3QH4ty5X JB9Gy62WICtqIEkzzt2bkcV1byFmKz2+BLv04fgcyTXEGOEByCDiZ3/N3kSJOqvg YxsGOmKkQSTavFLSe96Gj2pgchJqZ6j3qucDO6GrPOo8depP2kfzxfaJbXix0HEZ ln08X9hgZDxy4I98PmSaaJsK2R/i6T6jQdA3i8DnSbbyNhLn+3FK6gkP08ZEpaor 82WwJf+MVCLHXLYDy0aYOUDHpkNkkJWOj45A2Hv9JkOupGcUpyPGr82l4yh/MrxC +kM28xs= =rIbd -----END PGP SIGNATURE----- Merge tag 'v7.2-rc7' into driver-core-next We need the driver-core fixes in here as well to build on top of. Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Rafael J. Wysocki
|
f6ac045369 |
Merge branches 'acpi-bus', 'acpi-sysfs', 'acpi-tables' and 'acpi-driver'
Merge ACPI bus type code updates, ACPI sysfs code updates related to exposing table data, updates of ACPI data-only table parsers and assorted driver changes related to ACPI support for 7.3-rc1: - Eliminate struct acpi_driver whose users have all been converted to bind to platform devices or auxiliary devices and set the "no power management" flag for all struct acpi_device objects (Rafael Wysocki) - Update kerneldoc comments of two structures in the ACPI bus type code to use correct struct member names to avoid warnings (Randy Dunlap) - Avoid complaints regarding missing _OSC features on platforms where OSC_CAPABILITIES_MASK_ERROR is set in _OSC error bits even though all of the requested features are actually acknowledged (Rafael Wysocki) - Use correct region struct for BERT region size check and properly map BERT and CCEL data to their ACPI tables (Thomas Renninger) - Clean up the list of included header files in the NHLT table parser and validate the table and record lengths in the FPDT parser (Andy Shevchenko and Pengpeng Hou) - Stop using acpi_device_name() in the PNP core, stop setting acpi_device_name/class() in the Xen variant of the ACPI PAD (Processor Aggregator Device) driver, and make the Loongarch laptop driver stop setting acpi_device_class() (Rafael Wysocki) * acpi-bus: ACPI: bus: Avoid confusing complaints regarding missing _OSC features ACPI: bus: Use correct struct member names ACPI: scan: Set power.no_pm for all struct acpi_device objects ACPI: bus: Eliminate struct acpi_driver * acpi-sysfs: ACPI: sysfs: Properly map BERT and CCEL data to their ACPI tables ACPI: Use correct region struct for BERT region size check * acpi-tables: ACPI: NHLT: Remove always included kconfig.h ACPI: FPDT: validate table and record lengths * acpi-driver: PNP: ACPI: Stop using acpi_device_name() ACPI: PAD: xen: Stop setting acpi_device_name/class() platform/loongarch: laptop: Stop setting acpi_device_class() |
||
|
Christian Loehle
|
9c5ab33a6d |
ACPI: CPPC: Avoid locking standalone full-width registers
cpc_write() serializes every SystemMemory write with the per-CPU rmw_lock. The lock is required for read-modify-write fields and for registers whose access units overlap, but not for a full-width register in a standalone access unit. The _CPC layout is immutable after it has been parsed. Classify each SystemMemory register at probe time and retain locking for partial fields, invalid access widths, and overlapping access units. Allow standalone full-width registers to bypass the descriptor lookup and spinlock. Store the classification in existing structure padding so that struct cpc_register_resource does not grow. Signed-off-by: Christian Loehle <christian.loehle@arm.com> Link: https://patch.msgid.link/20260803210527.1285229-3-christian.loehle@arm.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Gary Guo
|
2c5d17cdc4 |
rust: driver: remove open-coded matching logic
With device ID info now including pointers instead of indices, the
open-coded ACPI/OF matching is no longer needed and can be replaced with
`device_get_match_data`.
With the removal of open-coded matching, the exposed functions and helpers
are also removed; this effectively reverts most of commit
|
||
|
Pengjie Zhang
|
9aa7df5205 |
ACPI: CPPC: add paired FFH feedback-counter read hook
cppc_get_perf_ctrs() reads the delivered and reference performance counters one at a time. Allow architectures to provide both FFH feedback counters in one operation when that either narrows the sampling window or avoids extra cross-CPU reads. Add a small FFH-specific hook for that case and fall back to the existing per-register reads when unsupported. Tested-by: Sumit Gupta <sumitg@nvidia.com> Reviewed-by: Sumit Gupta <sumitg@nvidia.com> Tested-by: Vanshidhar Konda <vanshikonda@os.amperecomputing.com> Reviewed-by: Vanshidhar Konda <vanshikonda@os.amperecomputing.com> Signed-off-by: Pengjie Zhang <zhangpengjie2@huawei.com> Acked-by: Rafael J. Wysocki (Intel) <rafael@kernel.org> Tested-by: Jeremy Linton <jeremy.linton@arm.com> Reviewed-by: Jeremy Linton <jeremy.linton@arm.com> Signed-off-by: Will Deacon <will@kernel.org> |
||
|
Christian Loehle
|
11055a46f3 |
ACPI: CPPC: Check all controls for fast switching
ACPI 6.2, Section 6.2.11.2 permits _CPC registers to use flexible
address spaces. Linux advertises that capability through _OSC and parses
the address space of each _CPC register independently. A directly
accessible DESIRED_PERF combined with PCC-backed limits is therefore a
valid configuration.
cppc_allow_fast_switch() only checks DESIRED_PERF, although the fast-switch
callback passes DESIRED_PERF, MIN_PERF and MAX_PERF to cppc_set_perf(). If
a limit uses PCC, that function can sleep while called from scheduler
context.
Allow fast switching only when every supported control used by the
callback has an address space already accepted for fast access. Check the
complete policy domain, including initialized CPUs that are currently
offline and may later become the policy's managing CPU.
Fixes:
|
||
|
Randy Dunlap
|
3b0eb670f3 |
ACPI: bus: Use correct struct member names
Avoid kernel-doc warnings by using the correct struct member names: Warning: ./include/acpi/acpi_bus.h:429 struct member 'crs_csi2_local' not described in 'acpi_device_software_node_port' Warning: ./include/acpi/acpi_bus.h:429 Excess struct member 'crs_crs2_local' description in 'acpi_device_software_node_port' Warning: ./include/acpi/acpi_bus.h:445 struct member 'nodeptrs' not described in 'acpi_device_software_nodes' Warning: ./include/acpi/acpi_bus.h:445 Excess struct member 'nodeprts' description in 'acpi_device_software_nodes' Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Link: https://patch.msgid.link/20260720032341.3087008-2-rdunlap@infradead.org Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Andy Shevchenko
|
4eff1be926 |
ACPI: NHLT: Remove always included kconfig.h
The inclusion of <linux/kconfig.h> is unneeded as it's guaranteed by
the build starting from the commit
|
||
|
Rafael J. Wysocki
|
9d4f0ecb87 |
ACPI: PCI: Introduce acpi_dev_get_pci_dev()
Some acpi_get_pci_dev() callers already have a struct ACPI device for which they want to get the struct pci_dev pointer of the associated PCI device, so they don't need to look for one. For this reason, add acpi_dev_get_pci_dev() that will get a PCI device for a given ACPI one (if possible) and turn acpi_get_pci_dev() into a static inline helper passing the acpi_fetch_acpi_dev() return value directly to acpi_dev_get_pci_dev(). No intentional functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/3430928.44csPzL39Z@rafael.j.wysocki |
||
|
Rafael J. Wysocki
|
541b293ab1 |
ACPI: bus: Eliminate struct acpi_driver
Now that struct acpi_driver has no more users, eliminate it along with
all of the code related to it.
Also remove the file added by commit
|
||
|
Rafael J. Wysocki
|
9825cf2cb5 |
ACPICA: Define acpi_ut_safe_strncpy() as strscpy_pad() alias
Commit |
||
|
Linus Torvalds
|
36808d5e98 |
Driver core changes for 7.2-rc1
- deferred probe:
- Fix race where deferred probe timeout work could be permanently
canceled by using mod_delayed_work()
- Fix missing jiffies conversion in deferred_probe_extend_timeout()
- Guard timeout extension with delayed_work_pending() to prevent
premature firing
- Use system_percpu_wq instead of the deprecated system_wq
- Update deferred_probe_timeout documentation
- device:
- Replace direct struct device bitfield access (can_match, dma_iommu,
dma_skip_sync, dma_ops_bypass, state_synced, dma_coherent,
of_node_reused, offline, offline_disabled) with flag-based
accessors using bit operations
- Reject devices with unregistered buses
- Delete unused DEVICE_ATTR_PREALLOC()
- Add low-level device attribute macros with const show/store
callbacks, allowing device attributes to reside in read-only memory
- Move core device attributes to read-only memory
- Constify group array pointers in driver_add_groups() /
driver_remove_groups(), struct bus_type, and struct device_driver
- device property:
- Fix fwnode reference leak in fwnode_graph_get_endpoint_by_id()
- Initialize all fields of fwnode_handle in fwnode_init()
- Provide swnode_get()/swnode_put() wrappers around kobject_get/put()
- Allow passing struct software_node_ref_args pointers directly to
PROPERTY_ENTRY_REF()
- driver_override:
- Migrate amba, cdx, vmbus, and rpmsg to the generic driver_override
infrastructure, fixing a UAF from unsynchronized access to
driver_override in bus match() callbacks
- Remove the now-unused driver_set_override()
- firmware loader:
- Fix recursive lock deadlock in device_cache_fw_images() when async
work falls back to synchronous execution
- Fix device reference leak in firmware_upload_register()
- platform:
- Pass KBUILD_MODNAME through the platform driver registration macro
to create module symlinks in sysfs for built-in drivers; move
module_kset initialization to a pure_initcall and tegra cbb
registration to core_initcall to ensure correct ordering
- Pass THIS_MODULE implicitly through a coresight_init_driver() macro
- sysfs:
- Upgrade OOB write detection in sysfs_kf_seq_show() from printk to
WARN
- Add return value clamping to sysfs_kf_read()
- Rust:
- ACPI:
- Fix missing match data for PRP0001 by exporting
acpi_of_match_device()
- Auxiliary:
- Replace drvdata() with dedicated registration data on
auxiliary_device. drvdata() exposed the driver's bus device
private data beyond the driver's own scope, creating ordering
constraints and forcing the data to outlive all registrations
that access it. Registration data is instead scoped structurally
to the Registration object, making lifecycle ordering enforced
by construction rather than convention.
- Rust-native device driver lifetimes (HRT):
- Allow Rust device drivers to carry a lifetime parameter on their
bus device private data, tied to the device binding scope -- the
interval during which a bus device is bound to a driver. Device
resources like pci::Bar<'a> and IoMem<'a> can be stored directly
in the driver's bus device private data with a lifetime bounded
by the binding scope, so the compiler enforces at build time that
they do not outlive the binding. This removes Devres indirection
from every access site and eliminates try_access() failure paths
in destructors.
Bus driver traits use a Generic Associated Type (GAT)
Data<'bound> to introduce the lifetime on the private data,
rather than parameterizing the Driver trait itself. Auxiliary
registration data, where the lifetime is not introduced by a
trait callback but must be threaded through Registration, uses
the ForLt trait (a type-level abstraction for types generic over
a lifetime).
- Misc:
- Fix DT overlayed devices not probing by reverting the broken
treewide overlay fix and re-running fw_devlink consumer pickup when
an overlay is applied to a bound device
- Use root_device_register() for faux bus root device; add sanity
check for failed bus init
- Fix dev_has_sync_state() data race with READ_ONCE() and move it to
base.h
- Avoid spurious device_links warning when removing a device while
its supplier is unbinding
- Switch ISA bus to dynamic root device
- Fix suspicious RCU usage in kernfs_put()
- Remove devcoredump exit callback
- Constify devfreq_event_class
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Merge tag 'driver-core-7.2-rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core updates from Danilo Krummrich:
"Deferred probe:
- Fix race where deferred probe timeout work could be permanently
canceled by using mod_delayed_work()
- Fix missing jiffies conversion in deferred_probe_extend_timeout()
- Guard timeout extension with delayed_work_pending() to prevent
premature firing
- Use system_percpu_wq instead of the deprecated system_wq
- Update deferred_probe_timeout documentation
device:
- Replace direct struct device bitfield access (can_match, dma_iommu,
dma_skip_sync, dma_ops_bypass, state_synced, dma_coherent,
of_node_reused, offline, offline_disabled) with flag-based
accessors using bit operations
- Reject devices with unregistered buses
- Delete unused DEVICE_ATTR_PREALLOC()
- Add low-level device attribute macros with const show/store
callbacks, allowing device attributes to reside in read-only memory
- Move core device attributes to read-only memory
- Constify group array pointers in driver_add_groups() /
driver_remove_groups(), struct bus_type, and struct device_driver
device property:
- Fix fwnode reference leak in fwnode_graph_get_endpoint_by_id()
- Initialize all fields of fwnode_handle in fwnode_init()
- Provide swnode_get()/swnode_put() wrappers around kobject_get/put()
- Allow passing struct software_node_ref_args pointers directly to
PROPERTY_ENTRY_REF()
driver_override:
- Migrate amba, cdx, vmbus, and rpmsg to the generic driver_override
infrastructure, fixing a UAF from unsynchronized access to
driver_override in bus match() callbacks
- Remove the now-unused driver_set_override()
firmware loader:
- Fix recursive lock deadlock in device_cache_fw_images() when async
work falls back to synchronous execution
- Fix device reference leak in firmware_upload_register()
platform:
- Pass KBUILD_MODNAME through the platform driver registration macro
to create module symlinks in sysfs for built-in drivers; move
module_kset initialization to a pure_initcall and tegra cbb
registration to core_initcall to ensure correct ordering
- Pass THIS_MODULE implicitly through a coresight_init_driver() macro
sysfs:
- Upgrade OOB write detection in sysfs_kf_seq_show() from printk to
WARN
- Add return value clamping to sysfs_kf_read()
Rust:
- ACPI:
Fix missing match data for PRP0001 by exporting
acpi_of_match_device()
- Auxiliary:
Replace drvdata() with dedicated registration data on
auxiliary_device. drvdata() exposed the driver's bus device private
data beyond the driver's own scope, creating ordering constraints
and forcing the data to outlive all registrations that access it.
Registration data is instead scoped structurally to the
Registration object, making lifecycle ordering enforced by
construction rather than convention.
- Rust-native device driver lifetimes (HRT):
Allow Rust device drivers to carry a lifetime parameter on their
bus device private data, tied to the device binding scope -- the
interval during which a bus device is bound to a driver. Device
resources like pci::Bar<'a> and IoMem<'a> can be stored directly in
the driver's bus device private data with a lifetime bounded by the
binding scope, so the compiler enforces at build time that they do
not outlive the binding. This removes Devres indirection from every
access site and eliminates try_access() failure paths in
destructors.
Bus driver traits use a Generic Associated Type (GAT) Data<'bound>
to introduce the lifetime on the private data, rather than
parameterizing the Driver trait itself. Auxiliary registration
data, where the lifetime is not introduced by a trait callback but
must be threaded through Registration, uses the ForLt trait (a
type-level abstraction for types generic over a lifetime).
Misc:
- Fix DT overlayed devices not probing by reverting the broken
treewide overlay fix and re-running fw_devlink consumer pickup when
an overlay is applied to a bound device
- Use root_device_register() for faux bus root device; add sanity
check for failed bus init
- Fix dev_has_sync_state() data race with READ_ONCE() and move it to
base.h
- Avoid spurious device_links warning when removing a device while
its supplier is unbinding
- Switch ISA bus to dynamic root device
- Fix suspicious RCU usage in kernfs_put()
- Remove devcoredump exit callback
- Constify devfreq_event_class"
* tag 'driver-core-7.2-rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/driver-core/driver-core: (81 commits)
software node: allow passing reference args to PROPERTY_ENTRY_REF()
driver core: platform: set mod_name in driver registration
coresight: pass THIS_MODULE implicitly through a macro
kernel: param: initialize module_kset in a pure_initcall
soc/tegra: cbb: Move driver registration from pure_initcall to core_initcall
firmware_loader: Fix recursive lock in device_cache_fw_images()
driver core: Use system_percpu_wq instead of system_wq
driver core: remove driver_set_override()
rpmsg: use generic driver_override infrastructure
Drivers: hv: vmbus: use generic driver_override infrastructure
cdx: use generic driver_override infrastructure
amba: use generic driver_override infrastructure
rust: devres: add 'static bound to Devres<T>
samples: rust: rust_driver_auxiliary: showcase lifetime-bound registration data
rust: auxiliary: generalize Registration over ForLt
rust: types: add `ForLt` trait for higher-ranked lifetime support
gpu: nova-core: separate driver type from driver data
samples: rust: rust_driver_pci: use HRT lifetime for Bar
rust: io: make IoMem and ExclusiveIoMem lifetime-parameterized
rust: pci: make Bar lifetime-parameterized
...
|
||
|
Rafael J. Wysocki
|
615f90d3b1 |
Merge branches 'acpi-processor', 'acpi-cppc' and 'acpi-pci'
Merge an ACPI processor driver update, two ACPI CPPC library updates and ACPI PCI/CXL support updates for 7.2-rc1: - Add cpuidle driver check in acpi_processor_register_idle_driver() to avoid evaluating _CST unnecessarily (Tony W Wang-oc) - Suppress UBSAN warning caused by field misuse during PCC-based register access in the ACPI CPPC library (Jeremy Linton) - Add support for CPPC v4 to the ACPI CPPC library (Sumit Gupta) - Update the ACPI device enumeration code to honor _DEP for ACPI0016 PCI/CXL host bridges and make the ACPI PCI root driver clear _DEP dependencies for PCI roots that have become operational (Chen Pei) * acpi-processor: ACPI: processor: Add cpuidle driver check in acpi_processor_register_idle_driver() * acpi-cppc: ACPI: CPPC: Suppress UBSAN warning caused by field misuse ACPI: CPPC: Add support for CPPC v4 * acpi-pci: ACPI: scan: Honor _DEP for ACPI0016 PCI/CXL host bridge ACPI: PCI: Clear _DEP dependencies after PCI root bridge attach |
||
|
Rafael J. Wysocki
|
9a0d10fed1 |
Merge branch 'acpi-driver'
Merge updates of core ACPI device drivers for 7.2-rc1: - Fix multiple issues related to probe, removal and missing NVDIMM device notifications in the ACPI NFIT driver (Rafael Wysocki) - Add support for devres-based management of ACPI notify handlers to the ACPI core (Rafael Wysocki) - Switch multiple core ACPI device drivers (including the ACPI PAD, ACPI video bus, ACPI HED, ACPI thermal zone, ACPI AC, ACPI battery, and ACPI NFIT drivers) over to using devres-based resource management during probe (Rafael Wysocki) - Replace mutex_lock/unlock() with guard()/scoped_guard() in the ACPI PMIC driver (Maxwell Doose) - Fix message kref handling in the dead device path of the ACPI IPMI address space handler (Yuho Choi) - Use sysfs_emit() in idlecpus_show() in the ACPI processor aggregator device (PAD) driver (Yury Norov) - Clean up device_id_scheme initialization in the ACPI video bus driver (Jean-Ralph Aviles) * acpi-driver: (26 commits) ACPI: IPMI: Fix message kref handling on dead device ACPI: NFIT: core: Fix possible deadlock and missing notifications ACPI: NFIT: core: Eliminate redundant local variable ACPI: NFIT: core: Fix acpi_nfit_init() error cleanup ACPI: NFIT: core: Fix possible NULL pointer dereference ACPI: bus: Clean up devm_acpi_install_notify_handler() ACPI: PAD: Use sysfs_emit() in idlecpus_show() ACPI: video: Do not initialise device_id_scheme directly ACPI: video: Switch over to devres-based resource management ACPI: video: Use devm for video->entry and backlight cleanup ACPI: video: Use devm action for freeing video devices ACPI: video: Use devm action for video bus object cleanup ACPI: video: Rearrange probe and remove code ACPI: video: Reduce the number of auxiliary device dereferences ACPI: PAD: Switch over to devres-based resource management ACPI: PAD: Fix teardown ordering in acpi_pad_remove() ACPI: PAD: Pass struct device pointer to acpi_pad_notify() ACPI: PAD: Rearrange acpi_pad_notify() ACPI: thermal: Switch over to devres-based resource management ACPI: HED: Switch over to devres-based resource management ... |
||
|
Rafael J. Wysocki
|
fc041c6931 |
Merge branch 'acpica'
Merge ACPICA updates for 7.2-rc1 including the following changes: - Add support for the Legacy Virtual Register (LVR) field in I2C serial bus resource descriptors to ACPICA (Akhil R) - Fix multiple issues related to bounds checks, input validation, use-after-free, and integer overflow checks in the AML interpreter in ACPICA (ikaros) - Update the copyright year to 2026 in ACPICA files and make minor changes related to ACPI 6.6 support (Pawel Chmielewski) - Remove spurious precision from format used to dump parse trees in ACPICA (David Laight) - Add modern standby DSM GUIDs to ACPICA header files (Daniel Schaefer) - Fix FADT 32/64X length mismatch warning in ACPICA (Abdelkader Boudih) - Update D3hot/cold device power states definitions in ACPICA header files (Aymeric Wibo) - Fix NULL pointer dereference in acpi_ns_custom_package() (Weiming Shi) - Update ACPICA version to 20260408 (Saket Dumbre) * acpica: (27 commits) ACPICA: add boundary checks in two places ACPICA: Add package limit checks in parser functions ACPICA: Update version to 20260408 ACPICA: Update the copyright year to 2026 ACPICA: Remove spurious precision from format used to dump parse trees ACPICA: Enhance OEM ID and Table ID validation in acpi_ex_load_table_op() ACPICA: Fix NULL pointer dereference in acpi_ns_custom_package() ACPICA: Enhance buffer validation in acpi_ut_walk_aml_resources() ACPICA: Add validation for node in acpi_ns_build_normalized_path() ACPICA: validate handler object type in two places ACPICA: Improve argument parsing in acpi_ps_get_next_simple_arg() ACPICA: Fix integer overflow in acpi_ex_opcode_3A_1T_1R() (mid_op) ACPICA: Prevent adding invalid references ACPICA: add boundary checks in acpi_ps_get_next_field() ACPICA: validate byte_count in acpi_ps_get_next_package_length() ACPICA: Fix use-after-free in acpi_ds_terminate_control_method() ACPICA: fix I2C LVR item count in the conversion table ACPICA: Mention the LVR bits ACPICA: Change LVR to 8 bit value ACPICA: Fetch LVR I2C resource descriptor ... |
||
|
Sumit Gupta
|
71e1815113 |
ACPI: CPPC: Add support for CPPC v4
CPPC v4 (ACPI 6.6, Section 8.4.6) adds two optional entries to the _CPC package: 1. OSPM Nominal Performance (8.4.6.1.2.6): A write-only register that lets OSPM inform the platform what it considers nominal performance. The platform classifies performance above this level as boost and below as throttle for its power/thermal decisions. 2. Resource Priority (8.4.6.1.2.7): A Package of Resource Priority Register Descriptor sub-packages that allow OSPM to set relative priority among processors for shared resources (boost, throttle, L2/L3 cache, memory bandwidth). Parsing the full structure is not yet supported; such entries are marked as unsupported. Add v4 _CPC table parsing (25 entries) and update REG_OPTIONAL to mark the two new registers as optional. Signed-off-by: Sumit Gupta <sumitg@nvidia.com> Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org> Reviewed-by: Pierre Gondois <pierre.gondois@arm.com> Link: https://patch.msgid.link/20260527194626.185286-2-sumitg@nvidia.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |