objtool · Supported

Maintainers

• M Josh Poimboeuf <jpoimboe@kernel.org>
• M Peter Zijlstra <peterz@infradead.org>

Paths

• F include/linux/objtool*.h
• F tools/objtool/

Last 30 days

Most active threads (last 7 days)

• WARM1d [PATCH v3 00/28] objtool: dynamically detect noreturns
  2026-09-21 22:31 · 18 replies in 7d · Josh Poimboeuf <jpoimboe@kernel.org>
• WARM1d [PATCH v4 00/22] kbuild: significantly speed up kernel builds
  2026-09-23 17:22 · 4 replies in 7d · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• COOLING4d [RFC PATCH 00/46] Orphaned Virtual Machines
  2026-09-20 19:38 · 1 reply in 7d · Pasha Tatashin <pasha.tatashin@soleen.com>

Recent patches

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

• WARM1d [PATCH v4 19/22] objtool: decode instructions and resolve branch targets in parallel
  2026-09-23 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM1d [PATCH v4 18/22] objtool: size the instruction hash to the text
  2026-09-23 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM1d [PATCH v4 17/22] objtool: cache relocations, do less work, eliminate relocation hash
  2026-09-23 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM1d [PATCH v4 16/22] objtool: do not hash DWARF relocations
  2026-09-23 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM1d [PATCH v3 27/28] objtool: Warn about missing/stale ANNOTATE_EXPORTED_NORETURN() usage
  2026-09-21 · Josh Poimboeuf <jpoimboe@kernel.org>
• WARM1d [PATCH v3 28/28] fixup! objtool: Add options to write/read exported noreturns to/from a file
  2026-09-21 · Josh Poimboeuf <jpoimboe@kernel.org>
• WARM1d [PATCH v3 25/28] objtool: Add ANNOTATE_EXPORTED_NORETURN()
  2026-09-21 · Josh Poimboeuf <jpoimboe@kernel.org>
• WARM1d [PATCH v3 26/28] objtool: Annotate all module-exported noreturns and remove noreturns.h
  2026-09-21 · Josh Poimboeuf <jpoimboe@kernel.org>
• WARM1d [PATCH v3 24/28] kbuild: Generate the noreturn list and validate modules against it
  2026-09-21 · Josh Poimboeuf <jpoimboe@kernel.org>
• WARM1d [PATCH v3 22/28] objtool: Add options to write/read exported noreturns to/from a file
  2026-09-21 · Josh Poimboeuf <jpoimboe@kernel.org>
• WARM1d [PATCH v3 20/28] x86/boot: Rework how pi startup symbols get exposed to vmlinux
  2026-09-21 · Josh Poimboeuf <jpoimboe@kernel.org>
• WARM1d [PATCH v3 21/28] objtool: Fix noreturn detection for non-sibling jumps to SYM_CODE
  2026-09-21 · Josh Poimboeuf <jpoimboe@kernel.org>
• WARM1d [PATCH v3 19/28] x86/xen: Make xen_start_kernel() noreturn
  2026-09-21 · Josh Poimboeuf <jpoimboe@kernel.org>
• WARM1d [PATCH v3 17/28] x86/entry: Make rewind_stack_and_make_dead() a real function
  2026-09-21 · Josh Poimboeuf <jpoimboe@kernel.org>
• WARM1d [PATCH v3 18/28] x86/xen: Make xen_cpu_bringup_again() a real function
  2026-09-21 · Josh Poimboeuf <jpoimboe@kernel.org>
• WARM1d [PATCH v3 16/28] objtool: Detect noreturns in weak functions
  2026-09-21 · Josh Poimboeuf <jpoimboe@kernel.org>
• WARM1d [PATCH v3 12/28] kbuild: Defer running objtool to link time for all CFG features
  2026-09-21 · Josh Poimboeuf <jpoimboe@kernel.org>
• WARM1d [PATCH v3 10/28] objtool: Add ANNOTATE_IGNORE_NORETURN()
  2026-09-21 · Josh Poimboeuf <jpoimboe@kernel.org>
• WARM1d [PATCH v3 05/28] objtool: Refactor the noreturn/dead-end detection
  2026-09-21 · Josh Poimboeuf <jpoimboe@kernel.org>
• WARM1d [PATCH v3 06/28] objtool: Ignore traps after noreturn calls in STT_CODE
  2026-09-21 · Josh Poimboeuf <jpoimboe@kernel.org>
• WARM1d [PATCH v3 04/28] objtool: Fix dead end detection for sibling calls
  2026-09-21 · Josh Poimboeuf <jpoimboe@kernel.org>
• WARM1d [PATCH v3 01/28] objtool: Remove obsolete noreturns.h entries
  2026-09-21 · Josh Poimboeuf <jpoimboe@kernel.org>
• WARM1d [PATCH v3 00/28] objtool: dynamically detect noreturns
  2026-09-21 · Josh Poimboeuf <jpoimboe@kernel.org>
• COOLING4d [RFC PATCH 11/46] liveupdate: Define CPU preservation linker sections
  2026-09-20 · Pasha Tatashin <pasha.tatashin@soleen.com>
• WARM3d [PATCH v3 17/20] objtool: decode instructions and resolve branch targets in parallel
  2026-09-17 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM3d [PATCH v3 16/20] objtool: size the instruction hash to the text
  2026-09-17 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM3d [PATCH v3 15/20] objtool: cache relocations, do less work, eliminate relocation hash
  2026-09-17 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM3d [PATCH v2 17/21] objtool: decode instructions and resolve branch targets in parallel
  2026-09-14 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM3d [PATCH v2 16/21] objtool: size the instruction hash to the text
  2026-09-14 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM3d [PATCH v2 15/21] objtool: cache relocations, do less work
  2026-09-14 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>

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.

• STALE193d [RFC PATCH v4 2/6] objtool: Set ELF_F_LAYOUT flag to preserve vmlinux segment layout
  2026-03-16 · Sathvika Vasireddy <hidden>
• STALE193d [RFC PATCH v4 3/6] objtool: Fix "can't find starting instruction" warnings on vmlinux
  2026-03-16 · Sathvika Vasireddy <hidden>
• STALE193d [RFC PATCH v4 4/6] objtool/powerpc: Skip jump destination analysis and unnanotated intra-function call warnings for --ftr-fixup
  2026-03-16 · Sathvika Vasireddy <hidden>
• STALE106d [PATCH v1 2/6] objtool: Set ELF_F_LAYOUT flag to preserve vmlinux segment layout
  2026-05-05 · Sathvika Vasireddy <hidden>
• STALE106d [PATCH v1 3/6] objtool: Fix "can't find starting instruction" warnings on vmlinux
  2026-05-05 · Sathvika Vasireddy <hidden>
• STALE106d [PATCH v1 4/6] objtool/powerpc: Skip jump destination analysis and unnanotated intra-function call warnings for --ftr-fixup
  2026-05-05 · Sathvika Vasireddy <hidden>