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/kernel/acpi.rs
• F tools/power/acpi/

Last 30 days

Most active threads (last 7 days)

• [PATCH v2 0/2] ACPI: SPCR: Support UART clock frequency field
  2026-05-24 22:40 · 2 replies in 7d · Markus Probst <hidden>

Active reviewers (last 30 days)

• Clément Léger <hidden>
  1 attestation (1 Reviewed-by) · last on 2026-05-13

Recent patches

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

• [PATCH v2 1/2] serial: earlycon: add uart_clk_freq parameter
  2026-05-24 · Markus Probst <hidden>
• [PATCH v2 2/2] ACPI: SPCR: Support UART clock frequency field
  2026-05-24 · Markus Probst <hidden>
• [PATCH v4 08/10] riscv: Introduce HEST SSE notification handlers
  2026-05-13 · Himanshu Chauhan <hidden>
• [PATCH v4 05/10] riscv: conditionally compile GHES NMI spool function
  2026-05-13 · Himanshu Chauhan <hidden>
• [PATCH v4 03/10] acpi: Introduce SSE in HEST notification types
  2026-05-13 · Himanshu Chauhan <hidden>
• [PATCH v3 08/10] riscv: Introduce HEST SSE notification handlers
  2026-01-09 · Himanshu Chauhan <hidden>
• [PATCH v3 05/10] riscv: conditionally compile GHES NMI spool function
  2026-01-09 · Himanshu Chauhan <hidden>
• [PATCH v3 03/10] acpi: Introduce SSE in HEST notification types
  2026-01-09 · Himanshu Chauhan <hidden>
• [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>
• [PATCH v6 3/4] apei/ghes: ensure that won't go past CPER allocated record
  2026-01-08 · Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
• [PATCH v5 1/4] apei/ghes: ARM processor Error: don't go past allocated memory
  2026-01-07 · Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
• [PATCH v5 3/4] apei/ghes: ensure that won't go past CPER allocated record
  2026-01-07 · Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
• 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>
• [PATCH v3 1/2] apei/ghes: ARM processor Error: don't go past allocated memory
  2025-12-19 · Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
• [PATCH v2 1/2] apei/ghes: don't go past the ARM processor CPER record buffer
  2025-11-26 · Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
• [RFC PATCH v2 08/10] riscv: Introduce HEST SSE notification handlers
  2025-10-29 · Himanshu Chauhan <hidden>
• [RFC PATCH v2 05/10] riscv: conditionally compile GHES NMI spool function
  2025-10-29 · Himanshu Chauhan <hidden>
• [RFC PATCH v2 03/10] acpi: Introduce SSE in HEST notification types
  2025-10-29 · Himanshu Chauhan <hidden>
• [PATCH RESEND 55/62] init: rename CONFIG_BLK_DEV_INITRD to CONFIG_INITRAMFS
  2025-09-14 · Askar Safin <hidden>
• [PATCH RESEND 42/62] init: rename <linux/initrd.h> to <linux/initramfs.h>
  2025-09-14 · Askar Safin <hidden>
• [PATCH RESEND 28/62] init: alpha, arc, arm, arm64, csky, m68k, microblaze, mips, nios2, openrisc, parisc, powerpc, s390, sh, sparc, um, x86, xtensa: rename initrd_{start,end} to virt_external_initramfs_{start,end}
  2025-09-13 · Askar Safin <hidden>
• [PATCH RESEND 23/62] init: rename __initramfs_{start,size} to __builtin_initramfs_{start,size}
  2025-09-13 · Askar Safin <hidden>
• [PATCH v6 4/5] efi/cper: align ARM CPER type with UEFI 2.9A/2.10 specs
  2025-08-14 · Daniel Ferguson <hidden>
• [PATCH v6 1/5] RAS: Report all ARM processor CPER information to userspace
  2025-08-14 · Daniel Ferguson <hidden>
• [PATCH v5 4/5] efi/cper: align ARM CPER type with UEFI 2.9A/2.10 specs
  2025-08-13 · Daniel Ferguson <hidden>
• [PATCH v5 1/5] RAS: Report all ARM processor CPER information to userspace
  2025-08-13 · Daniel Ferguson <hidden>
• [PATCH v4 4/5] efi/cper: align ARM CPER type with UEFI 2.9A/2.10 specs
  2025-08-05 · Daniel Ferguson <hidden>
• [PATCH v4 1/5] RAS: Report all ARM processor CPER information to userspace
  2025-08-05 · Daniel Ferguson <hidden>
• [PATCH v4 2/4] x86: Handle KCOV __init vs inline mismatches
  2025-07-24 · Kees Cook <kees@kernel.org>
• [PATCH v3 04/13] x86: Handle KCOV __init vs inline mismatches
  2025-07-17 · Kees Cook <kees@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.

• [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

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.

• [RFC PATCH v2 05/10] riscv: conditionally compile GHES NMI spool function
  2025-10-29 · Himanshu Chauhan <hidden>
• [RFC PATCH v2 08/10] riscv: Introduce HEST SSE notification handlers
  2025-10-29 · Himanshu Chauhan <hidden>
• [PATCH v2 1/2] apei/ghes: don't go past the ARM processor CPER record buffer
  2025-11-26 · Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
• 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>
• [PATCH v3 08/10] riscv: Introduce HEST SSE notification handlers
  2026-01-09 · Himanshu Chauhan <hidden>