acpi · Supported

Maintainers

• M "Rafael J. Wysocki" <rafael@kernel.org>
• R Len Brown <lenb@kernel.org>

Paths

• F Documentation/ABI/testing/configfs-acpi
• F Documentation/ABI/testing/sysfs-bus-acpi
• F Documentation/firmware-guide/acpi/
• F arch/x86/kernel/acpi/
• F arch/x86/pci/acpi.c
• F drivers/acpi/
• F drivers/pci/*/*acpi*
• F drivers/pci/*acpi*
• F drivers/pnp/pnpacpi/
• F include/acpi/
• F include/linux/acpi.h
• F include/linux/fwnode.h
• F include/linux/fw_table.h
• F lib/fw_table.c
• F rust/helpers/acpi.c
• F rust/kernel/acpi.rs
• F tools/power/acpi/

Last 30 days

Most active threads (last 7 days)

• HOTtoday [PATCH v1 00/17] ACPI: processor: idle/intel_idle: Add ACPI _LPI support to intel_idle
  2026-07-09 12:47 · 15 replies in 7d · "Rafael J. Wysocki" <rafael@kernel.org>
• COOLING4d [PATCH v4 0/7] irqchip/ACPI: Arm GICv5 IWB ACPI IRQ probe deferral
  2026-07-09 08:41 · 6 replies in 7d · Lorenzo Pieralisi <lpieralisi@kernel.org>
• HOTtoday [PATCH v7 00/10] ACPI: APEI: share GHES CPER helpers and add DT FFH provider
  2026-07-08 14:00 · 9 replies in 7d · Ahmed Tiba <hidden>
• WARM3d [PATCH 0/4] ACPI: APEI: GHES: Collection of fixes for issues reported by sashiko
  2026-07-09 16:28 · 4 replies in 7d · Dave Jiang <dave.jiang@intel.com>
• WARM3d [PATCH v22 0/2] ACPI: Add support for ACPI RAS2 feature table
  2026-07-09 21:08 · 2 replies in 7d · <hidden>
• WARM2d [PATCH v3 00/16] arm_mpam: Add MPAM-Fb firmware support
  2026-07-10 14:46 · 1 reply in 7d · Andre Przywara <andre.przywara@arm.com>
• WARM3d [PATCH v2] acpi: battery: Sanitise model_number by dropping unprintable characters
  2026-07-10 12:51 · 0 replies in 7d · Kate Hsuan <hpa@redhat.com>
• HOTtoday [PATCH 0/4] perf/arm_cspmu: Miscellaneous improvements
  2026-07-09 14:40 · 1 reply in 7d · Robin Murphy <robin.murphy@arm.com>
• COOLING5d [PATCH v9 0/9] lan966x pci device: Add support for SFPs, PCI part
  2026-07-08 10:04 · 1 reply in 7d · Herve Codina <herve.codina@bootlin.com>
• WARM3d REVIEWED: 4 (2M) [PATCH v2 0/2] CPPC: reduce FFH feedback-counter sampling skew on arm64
  2026-07-08 08:28 · 1 reply in 7d · Pengjie Zhang <hidden>

Active reviewers (last 30 days)

• Jonathan Cameron <jic23@kernel.org>
  16 attestations (6 Co-developed-by, 10 Reviewed-by) · last on 2026-07-09
• Sunil V L <hidden>
  14 attestations (6 Reviewed-by, 8 Tested-by) · last on 2026-07-09
• Daniel Ferguson <hidden>
  6 attestations (6 Tested-by) · last on 2026-07-09
• A Somasundaram <hidden>
  3 attestations (3 Co-developed-by) · last on 2026-07-09
• Andy Shevchenko <andriy.shevchenko@linux.intel.com>
  2 attestations (2 Reviewed-by) · last on 2026-07-08
• Ulf Hansson <hidden>
  2 attestations (2 Reviewed-by) · last on 2026-07-08
• Charles Keepax <ckeepax@opensource.cirrus.com>
  2 attestations (2 Reviewed-by) · last on 2026-07-08
• Sumit Gupta <sumitg@nvidia.com>
  2 attestations (1 Reviewed-by, 1 Tested-by) · last on 2026-07-08
• Vanshidhar Konda <hidden>
  2 attestations (1 Reviewed-by, 1 Tested-by) · last on 2026-07-08
• Ashok Raj <hidden>
  1 attestation (1 Reviewed-by) · last on 2026-07-09

Recent patches

Most-recent 30 patches in this subsystem on linux-acpi (capped at 30), ordered by date desc.

• WARM2d [PATCH v3 16/16] arm_mpam: detect and enable MPAM-Fb PCC support
  2026-07-10 · Andre Przywara <andre.przywara@arm.com>
• WARM3d [PATCH v2] acpi: battery: Sanitise model_number by dropping unprintable characters
  2026-07-10 · Kate Hsuan <hpa@redhat.com>
• DORMANTno replies REVIEWED: 1 (0M) [PATCH v22 2/2] ras: mem: Add ACPI RAS2 memory driver
  2026-07-09 · <hidden>
• WARM3d REVIEWED: 2 (0M) [PATCH v22 1/2] ACPI:RAS2: Add driver for the ACPI RAS2 feature table
  2026-07-09 · <hidden>
• WARM3d [PATCH 4/4] ACPI: APEI: GHES: Validate CXL protocol error section length before RAS cap copy
  2026-07-09 · Dave Jiang <dave.jiang@intel.com>
• WARM3d [PATCH 3/4] ACPI: extlog: Fix CONFIG_ACPI_APEI_PCIEAER guard typo
  2026-07-09 · Dave Jiang <dave.jiang@intel.com>
• WARM3d [PATCH 2/4] ACPI: APEI: GHES: Bound CXL event record copy to the firmware section length
  2026-07-09 · Dave Jiang <dave.jiang@intel.com>
• WARM3d [PATCH 1/4] ACPI: APEI: GHES: Use spin_lock_irqsave() for CXL CPER work locks
  2026-07-09 · Dave Jiang <dave.jiang@intel.com>
• HOTtoday [PATCH 1/4] ACPI/APMT: Use stable device ID
  2026-07-09 · Robin Murphy <robin.murphy@arm.com>
• HOTtoday [PATCH v1 01/17] ACPI: processor: idle: Expand _LPI package sanity checks
  2026-07-09 · "Rafael J. Wysocki" <rafael@kernel.org>
• HOTtoday [PATCH v1 02/17] ACPI: processor: idle: Ignore _LPI states with SYSTEMIO entry method
  2026-07-09 · "Rafael J. Wysocki" <rafael@kernel.org>
• HOTtoday [PATCH v1 03/17] ACPI: processor: idle: Unify debug in acpi_processor_evaluate_lpi()
  2026-07-09 · "Rafael J. Wysocki" <rafael@kernel.org>
• HOTtoday [PATCH v1 04/17] ACPI: processor: idle: Rearrange acpi_processor_evaluate_lpi()
  2026-07-09 · "Rafael J. Wysocki" <rafael@kernel.org>
• HOTtoday [PATCH v1 05/17] ACPI: processor: idle: Split acpi_processor_evaluate_lpi()
  2026-07-09 · "Rafael J. Wysocki" <rafael@kernel.org>
• HOTtoday [PATCH v1 06/17] ACPI: processor: idle: Introduce lpi_state_debug()
  2026-07-09 · "Rafael J. Wysocki" <rafael@kernel.org>
• HOTtoday [PATCH v1 07/17] ACPI: processor: idle: Rearrange acpi_processor_get_lpi_info()
  2026-07-09 · "Rafael J. Wysocki" <rafael@kernel.org>
• HOTtoday [PATCH v1 08/17] ACPI: processor: idle: Rework first-level _LPI states processing
  2026-07-09 · "Rafael J. Wysocki" <rafael@kernel.org>
• HOTtoday [PATCH v1 09/17] ACPI: processor: idle: Drop redundant _LPI presence checks
  2026-07-09 · "Rafael J. Wysocki" <rafael@kernel.org>
• HOTtoday [PATCH v1 10/17] ACPI: processor: idle: Rearrange loop in acpi_processor_get_lpi_info()
  2026-07-09 · "Rafael J. Wysocki" <rafael@kernel.org>
• HOTtoday [PATCH v1 11/17] ACPI: processor: idle: Rework flatten_lpi_states()
  2026-07-09 · "Rafael J. Wysocki" <rafael@kernel.org>
• HOTtoday [PATCH v1 12/17] ACPI: processor: idle: Introduce too_many_states() for _LPI
  2026-07-09 · "Rafael J. Wysocki" <rafael@kernel.org>
• HOTtoday [PATCH v1 13/17] ACPI: processor: idle: Introduce acpi_processor_extract_lpi_info()
  2026-07-09 · "Rafael J. Wysocki" <rafael@kernel.org>
• HOTtoday [PATCH v1 14/17] ACPI: processor: idle: Relocate acpi_processor_extract_lpi_info()
  2026-07-09 · "Rafael J. Wysocki" <rafael@kernel.org>
• HOTtoday [PATCH v1 15/17] ACPI: processor: idle: Add switch for strict _LPI processing
  2026-07-09 · "Rafael J. Wysocki" <rafael@kernel.org>
• COOLING4d [PATCH v4 6/7] ACPI/IORT: Implement ACPI infrastructure to enable GICv5 IWB probe deferral
  2026-07-09 · Lorenzo Pieralisi <lpieralisi@kernel.org>
• COOLING4d REVIEWED: 1 (0M) [PATCH v4 5/7] ACPI: irq: Move RISC-V interrupt controllers autodep to ACPI IRQ code
  2026-07-09 · Lorenzo Pieralisi <lpieralisi@kernel.org>
• COOLING4d REVIEWED: 2 (0M) [PATCH v4 4/7] ACPI: RISC-V: Fix riscv_acpi_add_prt_dep() loop handling
  2026-07-09 · Lorenzo Pieralisi <lpieralisi@kernel.org>
• COOLING4d REVIEWED: 2 (0M) [PATCH v4 3/7] ACPI: RISC-V: Check acpi_get_handle() status in riscv_acpi_add_prt_dep()
  2026-07-09 · Lorenzo Pieralisi <lpieralisi@kernel.org>
• COOLING4d REVIEWED: 2 (0M) [PATCH v4 2/7] ACPI: RISC-V: Fix riscv_acpi_irq_get_dep() loop termination
  2026-07-09 · Lorenzo Pieralisi <lpieralisi@kernel.org>
• COOLING4d [PATCH v4 1/7] ACPI: Add acpi_device_clear_deps() helper function
  2026-07-09 · Lorenzo Pieralisi <lpieralisi@kernel.org>

Needs attention (review trailers in, no pickup)

Patches with review trailers that haven't landed in mainline and haven't been Acked by a maintainer. Oldest first.

• STALE188d REVIEWED: 3 (3M) [PATCH v2] ACPI: PCI: IRQ: Fix INTx GSIs signedness
  2026-01-05 · Lorenzo Pieralisi <lpieralisi@kernel.org> · 1 Reviewed-by
• STALE118d REVIEWED: 1 (1M) [PATCH v6 1/4] apei/ghes: ARM processor Error: don't go past allocated memory
  2026-01-08 · Mauro Carvalho Chehab <mchehab+huawei@kernel.org> · 1 Reviewed-by
• STALE180d REVIEWED: 26 (26M) [PATCH v3 2/3] ACPI: APEI: GHES: Extract helper functions for error status handling
  2026-01-12 · Shuai Xue <xueshuai@linux.alibaba.com> · 1 Reviewed-by, 1 Tested-by
• STALE180d REVIEWED: 12 (12M) [PATCH 5/5 v9] ACPI: extlog: Trace CPER CXL Protocol Error Section
  2026-01-14 · Fabio M. De Francesco <hidden> · 3 Reviewed-by
• STALE167d REVIEWED: 1 (1M) [PATCH v3 6/6] irqchip/gic-v5: Add ACPI IWB probing
  2026-01-15 · Lorenzo Pieralisi <lpieralisi@kernel.org> · 1 Reviewed-by
• STALE165d REVIEWED: 1 (0M) [PATCH] apei/ghes: Add ghes_edac support for __ZX__ and _BYO_ systems
  2026-01-28 · Tony W Wang-oc <TonyWWang-oc@zhaoxin.com> · 1 Tested-by
• STALE101d REVIEWED: 4 (1M) [PATCH v5 1/1] RISC-V: Add common csr_read_num() and csr_write_num() functions
  2026-02-04 · Anup Patel <hidden> · 4 Reviewed-by
• DORMANTno replies REVIEWED: 2 (0M) FAILED: Patch "x86/acpi/boot: Correct acpi_is_processor_usable() check again" failed to apply to 6.18-stable tree
  2026-03-01 · Sasha Levin <sashal@kernel.org> · 2 Tested-by
• DORMANTno replies REVIEWED: 2 (0M) FAILED: Patch "x86/acpi/boot: Correct acpi_is_processor_usable() check again" failed to apply to 6.12-stable tree
  2026-03-01 · Sasha Levin <sashal@kernel.org> · 2 Tested-by
• DORMANTno replies REVIEWED: 2 (0M) FAILED: Patch "x86/acpi/boot: Correct acpi_is_processor_usable() check again" failed to apply to 6.6-stable tree
  2026-03-01 · Sasha Levin <sashal@kernel.org> · 2 Tested-by

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• STALE168d [PATCH 06/12] efi/cper: adopt estatus iteration helpers
  2025-12-17 · Ahmed Tiba <hidden>
• STALE168d [PATCH 07/12] ghes: prepare estatus hooks for shared handling
  2025-12-17 · Ahmed Tiba <hidden>
• STALE168d [PATCH 08/12] ghes: add estatus provider ops
  2025-12-17 · Ahmed Tiba <hidden>
• STALE168d [PATCH 09/12] ghes: route error handling through shared estatus core
  2025-12-17 · Ahmed Tiba <hidden>
• STALE180d [PATCH v2 1/7] ACPICA: Add GICv5 MADT structures
  2025-12-18 · Lorenzo Pieralisi <lpieralisi@kernel.org>
• STALE180d [PATCH v2 2/7] ACPICA: Add Arm IORT IWB node definitions
  2025-12-18 · Lorenzo Pieralisi <lpieralisi@kernel.org>
• STALE200d [PATCH v4 01/17] ACPI/AEST: Parse the AEST table
  2025-12-22 · Ruidong Tian <hidden>
• DORMANTno replies Re: [PATCH v3 1/2] apei/ghes: ARM processor Error: don't go past allocated memory
  2025-12-22 · Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
• STALE184d [PATCH v1 2/6] ACPI: processor: Remove unused empty stubs of some functions
  2025-12-23 · Huisong Li <lihuisong@huawei.com>
• STALE184d [PATCH v1 1/6] ACPI: processor: idle: Optimize ACPI idle driver registration
  2025-12-23 · Huisong Li <lihuisong@huawei.com>