build,src: make --use-largepages a no-op

[joyeecheung]

This feature has not been actively used in the wild and has always only been best-effort on systems that support it. The build changes it needs breaks WSL1 compatibility and the relocation mechanism won't work with newer V8 that remaps builtins using mremap(MREMAP_DONTUNMAP).

This patch effectively removes this feature by turning the flags into no-ops. A warning will be printed if --use-largepages=on is used.

This unblocks #65161

Fixes: #63735
Fixes: #64408
Refs: https://chromium-review.googlesource.com/c/v8/v8/+/7985687

[nodejs-github-bot]

Review requested:

• @nodejs/config
• @nodejs/gyp
• @nodejs/startup
• @nodejs/tsc

[aduh95]

You'd need to run make node.1

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.14%. Comparing base (610fcd8) to head (15940ef).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #65389      +/-   ##
==========================================
+ Coverage   90.12%   90.14%   +0.02%     
==========================================
  Files         752      751       -1     
  Lines      252313   252298      -15     
  Branches    47432    47446      +14     
==========================================
+ Hits       227392   227436      +44     
+ Misses      16237    16175      -62     
- Partials     8684     8687       +3     

Files with missing lines	Coverage Δ
src/debug_utils.h	80.00% <ø> (ø)
src/node.cc	76.65% <100.00%> (+0.13%)	⬆️
src/node.h	92.30% <ø> (ø)
src/node_options.cc	79.64% <ø> (+0.08%)	⬆️

... and 29 files with indirect coverage changes

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[joyeecheung]

Regenerated manpages with make node.1 to fix the linter complaint.

@panva @aduh95 @jasnell @lpinca @targos @legendecas @richardlau can you take a look again? Thanks!

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/76002/

[nodejs-github-bot]

Commit Queue failed

- Loading data for nodejs/node/pull/65389
✔  Done loading data for nodejs/node/pull/65389
----------------------------------- PR info ------------------------------------
Title      build,src: make --use-largepages a no-op (#65389)
Author     Joyee Cheung <joyeec9h3@gmail.com> (@joyeecheung)
Branch     joyeecheung:remove-largepages -> nodejs:main
Labels     lib / src, needs-ci, commit-queue, commit-queue-squash
Commits    2
 - build,src: make --use-largepages a no-op
 - fixup! build,src: make --use-largepages a no-op
Committers 1
 - Joyee Cheung <joyeec9h3@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/65389
Fixes: https://github.com/nodejs/node/issues/63735
Fixes: https://github.com/nodejs/node/issues/64408
Refs: https://chromium-review.googlesource.com/c/v8/v8/+/7985687
Reviewed-By: Filip Skokan <panva.ip@gmail.com>
Reviewed-By: Richard Lau <richard.lau@ibm.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
------------------------------ Generated metadata ------------------------------
PR-URL: https://github.com/nodejs/node/pull/65389
Fixes: https://github.com/nodejs/node/issues/63735
Fixes: https://github.com/nodejs/node/issues/64408
Refs: https://chromium-review.googlesource.com/c/v8/v8/+/7985687
Reviewed-By: Filip Skokan <panva.ip@gmail.com>
Reviewed-By: Richard Lau <richard.lau@ibm.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
--------------------------------------------------------------------------------
   ℹ  This PR was created on Tue, 18 Aug 2026 16:42:00 GMT
   ✔  Approvals: 6
   ✔  - Filip Skokan (@panva) (TSC): https://github.com/nodejs/node/pull/65389#pullrequestreview-4974241425
   ✔  - Richard Lau (@richardlau) (TSC): https://github.com/nodejs/node/pull/65389#pullrequestreview-4974284212
   ✔  - Luigi Pinca (@lpinca): https://github.com/nodejs/node/pull/65389#pullrequestreview-4964787574
   ✔  - Michaël Zasso (@targos) (TSC): https://github.com/nodejs/node/pull/65389#pullrequestreview-4974239811
   ✔  - Chengzhong Wu (@legendecas) (TSC): https://github.com/nodejs/node/pull/65389#pullrequestreview-4965389659
   ✔  - James M Snell (@jasnell) (TSC): https://github.com/nodejs/node/pull/65389#pullrequestreview-4966739333
   ✘  1 GitHub CI job(s) cancelled:
   ✘    - test-linux (ubuntu-24.04): CANCELLED (https://github.com/nodejs/node/actions/runs/32273683157/job/96135892536)
   ℹ  Last Full PR CI on 2026-08-19T16:17:13Z: https://ci.nodejs.org/job/node-test-pull-request/76002/
- Querying data for job/node-test-pull-request/76002/
✔  Build data downloaded
   ✔  Last Jenkins CI successful
--------------------------------------------------------------------------------
   ✔  Aborted `git node land` session in /home/runner/work/node/node/.ncu

https://github.com/nodejs/node/actions/runs/32498791963

[joyeecheung]

It seems the commit queue is unable to recognize the successful GHA rebuild after the first one is canceled. Landed manually in 15940ef.