extensible firmware interface (efi) · Maintained

Maintainers

• M Ard Biesheuvel <ardb@kernel.org>
• R Ilias Apalodimas <ilias.apalodimas@linaro.org>

Paths

• F Documentation/admin-guide/efi-stub.rst
• F arch/*/include/asm/efi.h
• F arch/*/kernel/efi.c
• F arch/arm/boot/compressed/efi-header.S
• F arch/x86/platform/efi/
• F drivers/firmware/efi/
• F include/linux/efi*.h
• X drivers/firmware/efi/cper*

Last 30 days

Most active threads (last 7 days)

• DORMANTno replies [PATCH] efi: vars: commonize the 512-byte name buffer quirk
  2026-08-15 07:48 · 0 replies in 7d · Jonggeun Park <hidden>
• HOTtoday [PATCH 0/3] efi: Simply DT handoff from stub to kernel
  2026-08-13 07:45 · 3 replies in 7d · Ard Biesheuvel <ardb@kernel.org>
• WARM3d [PATCH] mefi: add dynamic control interface for EFI runtime services
  2026-08-14 09:57 · 1 reply in 7d · Junxiao Chang <hidden>
• HOTtoday [PATCH 0/4] kho: rename "scratch" to "bootmem"
  2026-08-11 16:27 · 2 replies in 7d · Pratyush Yadav <pratyush@kernel.org>

Recent patches

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

• DORMANTno replies [PATCH] efi: vars: commonize the 512-byte name buffer quirk
  2026-08-15 · Jonggeun Park <hidden>
• DORMANTno replies [PATCH] efi: add dynamic control interface for EFI runtime services
  2026-08-14 · Junxiao Chang <hidden>
• HOTtoday [PATCH 3/3] efi: Make the 'linux,uefi-boot-memmap' DT property optional
  2026-08-13 · Ard Biesheuvel <ardb@kernel.org>
• HOTtoday [PATCH 1/3] efi: Turn boot memmap handling into shared code
  2026-08-13 · Ard Biesheuvel <ardb@kernel.org>
• HOTtoday [PATCH 2/3] efi: Pass EFI boot memmap struct address to core kernel
  2026-08-13 · Ard Biesheuvel <ardb@kernel.org>
• HOTtoday [PATCH 3/4] kho: rename KHO scratch to KHO bootmem
  2026-08-11 · Pratyush Yadav <pratyush@kernel.org>
• HOTtoday [PATCH 2/4] memblock: rename KHO_SCRATCH to KHO_NOPRSRV
  2026-08-11 · Pratyush Yadav <pratyush@kernel.org>
• COOLING7d [PATCH v2 12/13] hyperv: add MSHV Dom0 root-partition boot enablement (EFI HvLoader)
  2026-08-10 · Wei Hu <hidden>
• DORMANTno replies [PATCH] x86/efi: Handle errors for efi_map_region_fixed()
  2026-08-10 · Eshaan Deshmukh <hidden>
• COOLING10d [PATCH v1 12/13] hyperv: add MSHV Dom0 root-partition boot enablement (EFI HvLoader)
  2026-08-07 · Wei Hu <hidden>
• WARM3d [PATCH] efi: add dynamic control interface for EFI runtime services
  2026-08-05 · Junxiao Chang <hidden>
• WARM3d [PATCH] efi: add dynamic control interface for EFI runtime services
  2026-07-30 · Junxiao Chang <hidden>
• COOLING13d [PATCH] efi/libstub: populate LoaderDevicePartUUID
  2026-07-24 · Vincent Mailhol <mailhol@kernel.org>
• COLD21d [PATCH RFC 3/3] efi: reserve inherited poisoned frames before the allocator comes up
  2026-07-17 · Breno Leitao <leitao@debian.org>
• COLD21d [PATCH RFC 1/3] efi: add the LINUX_EFI_POISONED_MEMORY configuration table
  2026-07-17 · Breno Leitao <leitao@debian.org>
• COLD21d [PATCH RFC 2/3] efi: record hardware-poisoned frames into the poisoned-memory table
  2026-07-17 · Breno Leitao <leitao@debian.org>
• COOLING6d [PATCH 16/22] efi: mark efi_mm as a kernel mm
  2026-07-14 · Kevin Brodsky <hidden>
• COLD34d [PATCH 2/2] efi/runtime-wrappers: mark efi_runtime_lock_owner as __used
  2026-07-13 · Breno Leitao <leitao@debian.org>
• COLD34d [PATCH 1/2] efi/runtime-wrappers: mark efi_rts_park_worker() as __noreturn
  2026-07-13 · Breno Leitao <leitao@debian.org>
• COLD41d [PATCH v2 5/5] Revert "tpm: do not ignore memblock_reserve return value"
  2026-07-06 · Sang-Heon Jeon <hidden>
• COLD16d [PATCH] efi: apple-properties: validate setup data header length
  2026-07-06 · Pengpeng Hou <hidden>
• WARM3d [PATCH] mefi: add dynamic control interface for EFI runtime services
  2026-07-03 · Junxiao Chang <hidden>
• COLD25d [PATCH] efi: Make EFI_VARS_PSTORE depend on EFIVAR_FS
  2026-06-25 · Theodore Tucker <hidden>
• STALE61d [PATCH 5/5] Revert "tpm: do not ignore memblock_reserve return value"
  2026-06-16 · Sang-Heon Jeon <hidden>
• COLD35d [PATCH v3 7/7] efi/runtime-wrappers: retire the worker if a wedged call ever returns
  2026-06-16 · Breno Leitao <leitao@debian.org>
• COLD35d [PATCH v3 6/7] efi/runtime-wrappers: honour EFI_RUNTIME_SERVICES in the non-blocking paths
  2026-06-16 · Breno Leitao <leitao@debian.org>
• COLD35d [PATCH v3 5/7] efi/runtime-wrappers: bound the wait for EFI runtime service calls
  2026-06-16 · Breno Leitao <leitao@debian.org>
• COLD35d [PATCH v3 4/7] efi/runtime-wrappers: check EFI_RUNTIME_SERVICES before using efi_rts_work
  2026-06-16 · Breno Leitao <leitao@debian.org>
• COLD35d [PATCH v3 3/7] efi/runtime-wrappers: handle queue_work() failure with goto exit
  2026-06-16 · Breno Leitao <leitao@debian.org>
• COLD35d [PATCH v3 2/7] efi/runtime-wrappers: factor out efi_rts_park_worker()
  2026-06-16 · Breno Leitao <leitao@debian.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.

• STALE150d REVIEWED: 2 (2M) [PATCH v2] x86/efi: defer freeing of boot services memory
  2026-02-25 · Mike Rapoport <rppt@kernel.org> · 1 Reviewed-by
• STALE138d REVIEWED: 1 (1M) [PATCH v2 2/5] x86/efi: Gather initial memory reservation and table handling logic
  2026-04-01 · Ard Biesheuvel <hidden> · 1 Reviewed-by
• STALE110d REVIEWED: 1 (0M) [RESEND PATCH v2 2/2] efi/libstub: Synchronize instruction cache after kernel relocation
  2026-04-27 · WANG Rui <hidden> · 1 Reviewed-by
• DORMANTno replies REVIEWED: 1 (0M) [PATCH v7 3/3] riscv: fix building compressed EFI image
  2026-04-27 · Dmitry Antipov <hidden> · 1 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.

• STALE201d [PATCH 1/2] efi/libstub: Enable apple-set-os for all Apple Devices
  2026-01-25 · Atharva Tiwari <hidden>
• STALE195d [PATCH v3 1/2] efi/libstub: Enable apple-set-os for most apple devices
  2026-02-03 · Atharva Tiwari <hidden>
• STALE185d [PATCH 2/2] efi: Allow to expose the workqueue via sysfs
  2026-02-05 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• DORMANTno replies Re: [BUG] Fault during memory acceptance for TDX VMs with certain memory sizes
  2026-02-13 · "Verma, Vishal L" <vishal.l.verma@intel.com>
• STALE179d [PATCHv2 2/2] efi: Align unaccepted memory range to page boundary
  2026-02-17 · "Kiryl Shutsemau (Meta)" <kas@kernel.org>
• STALE171d [PATCH v2 2/2] efi: Allow to expose the workqueue via sysfs
  2026-02-27 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• STALE154d [RFC PATCH 3/9] x86/efi: Omit RSRV_KERN memblock reservations when freeing boot regions
  2026-03-06 · Ard Biesheuvel <hidden>
• STALE154d [RFC PATCH 4/9] x86/efi: Defer sub-1M check from unmap to free stage
  2026-03-06 · Ard Biesheuvel <hidden>
• STALE154d [RFC PATCH 5/9] x86/efi: Unmap kernel-reserved boot regions from EFI page tables
  2026-03-06 · Ard Biesheuvel <hidden>
• STALE154d [RFC PATCH 6/9] x86/efi: Do not rely on EFI_MEMORY_RUNTIME bit and avoid entry splitting
  2026-03-06 · Ard Biesheuvel <hidden>