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 v3 0/7] irqchip/ACPI: Arm GICv5 IWB ACPI IRQ probe deferral
  2026-07-01 14:39 · 6 replies in 7d · Lorenzo Pieralisi <lpieralisi@kernel.org>
• HOTtoday [PATCH v2 00/15] arm_mpam: Add MPAM-Fb firmware support
  2026-07-02 16:23 · 1 reply in 7d · Andre Przywara <andre.przywara@arm.com>
• WARM1d [PATCH v2 00/13] KVM Dirty-bit cleaning hw accelerator (HACDBS)
  2026-06-29 11:18 · 1 reply in 7d · Leonardo Bras <hidden>

Active reviewers (last 30 days)

• Sunil V L <hidden>
  7 attestations (3 Reviewed-by, 4 Tested-by) · last on 2026-07-01

Recent patches

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

• DORMANTno replies [PATCH v2 15/15] arm_mpam: detect and enable MPAM-Fb PCC support
  2026-07-02 · Andre Przywara <andre.przywara@arm.com>
• HOTtoday [PATCH v3 6/7] ACPI/IORT: Implement ACPI infrastructure to enable GICv5 IWB probe deferral
  2026-07-01 · Lorenzo Pieralisi <lpieralisi@kernel.org>
• HOTtoday REVIEWED: 1 (0M) [PATCH v3 5/7] ACPI: irq: Move RISC-V interrupt controllers autodep to ACPI IRQ code
  2026-07-01 · Lorenzo Pieralisi <lpieralisi@kernel.org>
• HOTtoday REVIEWED: 2 (0M) [PATCH v3 4/7] ACPI: RISC-V: Fix riscv_acpi_add_prt_dep() loop handling
  2026-07-01 · Lorenzo Pieralisi <lpieralisi@kernel.org>
• HOTtoday REVIEWED: 2 (0M) [PATCH v3 3/7] ACPI: RISC-V: Check acpi_get_handle() status in riscv_acpi_add_prt_dep()
  2026-07-01 · Lorenzo Pieralisi <lpieralisi@kernel.org>
• HOTtoday REVIEWED: 2 (0M) [PATCH v3 2/7] ACPI: RISC-V: Fix riscv_acpi_irq_get_dep() loop termination
  2026-07-01 · Lorenzo Pieralisi <lpieralisi@kernel.org>
• HOTtoday [PATCH v3 1/7] ACPI: Add acpi_device_clear_dep() helper function
  2026-07-01 · Lorenzo Pieralisi <lpieralisi@kernel.org>
• WARM1d [PATCH v2 05/13] KVM: arm64: Detect (via ACPI) and initialize HACDBSIRQ
  2026-06-29 · Leonardo Bras <hidden>
• HOTtoday [PATCH v15 2/9] ACPI: APEI: GHES: use exception context to gate SIGBUS on poison consumption
  2026-06-18 · Ruidong Tian <hidden>
• COLD27d [PATCH v01] mailbox/pcc.c: add query channel function
  2026-06-04 · Adam Young <hidden>
• WARM2d [PATCH v2 5/6] ACPI/IORT: Implement ACPI infrastructure to enable GICv5 IWB probe deferral
  2026-06-03 · Lorenzo Pieralisi <lpieralisi@kernel.org>
• WARM2d [PATCH v2 4/6] ACPI: irq: Move RISC-V interrupt controllers autodep to ACPI IRQ code
  2026-06-03 · Lorenzo Pieralisi <lpieralisi@kernel.org>
• WARM2d [PATCH v2 3/6] ACPI: RISC-V: Fix riscv_acpi_add_prt_dep() loop handling
  2026-06-03 · Lorenzo Pieralisi <lpieralisi@kernel.org>
• WARM2d [PATCH v2 2/6] ACPI: RISC-V: Check acpi_get_handle() status in riscv_acpi_add_prt_dep()
  2026-06-03 · Lorenzo Pieralisi <lpieralisi@kernel.org>
• WARM2d [PATCH v2 1/6] ACPI: RISC-V: Fix riscv_acpi_irq_get_dep() loop termination
  2026-06-03 · Lorenzo Pieralisi <lpieralisi@kernel.org>
• COLD23d Re: [PATCH v3] cpu/hotplug: Fix NULL kobject warning in cpuhp_smt_enable()
  2026-06-03 · Jinjie Ruan <hidden>
• COLD30d [PATCH v7 14/16] arm64: ras: support vendor node CMN700
  2026-06-02 · Ruidong Tian <hidden>
• COLD30d [PATCH v7 03/16] arm64: ras: Unify the read/write interface for system and MMIO registers
  2026-06-02 · Ruidong Tian <hidden>
• COLD30d [PATCH v7 08/16] arm64: ras: Handle memory failure for uncorrectable errors
  2026-06-02 · Ruidong Tian <hidden>
• COLD30d [PATCH v7 04/16] arm64: ras: Support RAS Common Fault Injection Model Extension
  2026-06-02 · Ruidong Tian <hidden>
• COLD30d [PATCH v7 06/16] arm64: ras: Enable error reporting
  2026-06-02 · Ruidong Tian <hidden>
• COLD30d [PATCH v7 05/16] arm64: ras: Plumb AEST interrupts as platform IRQ resources
  2026-06-02 · Ruidong Tian <hidden>
• COLD30d [PATCH v7 01/16] ACPI/AEST: Register arm64_ras platform devices from AEST v2
  2026-06-02 · Ruidong Tian <hidden>
• COLD15d [PATCH v5 10/10] RAS: add firmware-first CPER provider
  2026-05-29 · Ahmed Tiba <hidden>
• COLD15d [PATCH v5 08/10] ACPI: APEI: share GHES CPER helpers
  2026-05-29 · Ahmed Tiba <hidden>
• COLD15d [PATCH v5 07/10] ACPI: APEI: introduce GHES helper
  2026-05-29 · Ahmed Tiba <hidden>
• COLD15d [PATCH v5 06/10] ACPI: APEI: GHES: move CXL CPER helpers
  2026-05-29 · Ahmed Tiba <hidden>
• COLD15d [PATCH v5 05/10] ACPI: APEI: GHES: move vendor record helpers
  2026-05-29 · Ahmed Tiba <hidden>
• COLD15d [PATCH v5 04/10] ACPI: APEI: GHES: move estatus cache helpers
  2026-05-29 · Ahmed Tiba <hidden>
• COLD15d [PATCH v5 03/10] ACPI: APEI: GHES: move GHESv2 ack and alloc helpers
  2026-05-29 · Ahmed Tiba <hidden>

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.

• STALE175d REVIEWED: 2 (2M) [PATCH v5 1/3] ACPI: CPPC: Factor out and export per-cpu cppc_perf_ctrs_in_pcc_cpu()
  2025-12-23 · Jie Zhan <zhanjie9@hisilicon.com> · 2 Reviewed-by
• STALE156d 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
• STALE87d REVIEWED: 1 (0M) [PATCH v2] ACPI: AGDI: fix missing newline in error message
  2026-04-01 · Haoyu Lu <hidden> · 1 Reviewed-by
• STALE85d REVIEWED: 1 (0M) [PATCH v3] ACPI: AGDI: fix missing newline in error message
  2026-04-07 · Haoyu Lu <hidden> · 1 Reviewed-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.

• STALE157d [PATCH 06/12] efi/cper: adopt estatus iteration helpers
  2025-12-17 · Ahmed Tiba <hidden>
• STALE157d [PATCH 07/12] ghes: prepare estatus hooks for shared handling
  2025-12-17 · Ahmed Tiba <hidden>
• STALE157d [PATCH 08/12] ghes: add estatus provider ops
  2025-12-17 · Ahmed Tiba <hidden>
• STALE157d [PATCH 09/12] ghes: route error handling through shared estatus core
  2025-12-17 · Ahmed Tiba <hidden>
• STALE169d [PATCH v2 1/7] ACPICA: Add GICv5 MADT structures
  2025-12-18 · Lorenzo Pieralisi <lpieralisi@kernel.org>
• STALE169d [PATCH v2 2/7] ACPICA: Add Arm IORT IWB node definitions
  2025-12-18 · Lorenzo Pieralisi <lpieralisi@kernel.org>
• STALE189d [PATCH v4 01/17] ACPI/AEST: Parse the AEST table
  2025-12-22 · Ruidong Tian <hidden>
• STALE174d [PATCH v5 01/17] ACPI/AEST: Parse the AEST table
  2025-12-30 · Ruidong Tian <hidden>
• STALE107d [PATCH v6 01/16] ACPI/AEST: Parse the AEST table
  2026-01-22 · Ruidong Tian <hidden>
• STALE112d [PATCH v2 04/11] ACPI: APEI: GHES: move GHESv2 ack and alloc helpers
  2026-02-20 · Ahmed Tiba <hidden>