[Bug 241710] please increase ARG_MAX

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=241710

--- Comment #27 from commit-hook at freebsd.org ---
A commit references this bug:

Author: pfg
Date: Sat Dec 21 02:40:41 UTC 2019
New revision: 355968
URL: https://svnweb.freebsd.org/changeset/base/355968

Log:
  MFC r355828:
  Double the size of ARG_MAX on LP64 platforms.

  As modern software keeps growing in size, we get requests to update the
  value of ARG_MAX in order to link the resulting object files. Other OSs
  have much higher values but increasiong ARG_MAX has a multiplied effect on
  KVA, so just bumping this value is dangerous in some archs like ARM32 that
  can exhaust KVA rather easily.

  While it would be better to have a unique value for all archs, other OSs
  (Illumos in particular) can have different ARG_MAX limits depending on the
  platform,  For now we want to be really conservative so we are avoidng
  the change on ILP32 and in the alternative case we only double it since that
  seems to work well enough for recent Code Aster.

  Bump the _FreeBSD_version for this change.

  PR:           241710

Changes:
_U  stable/12/
  stable/12/sys/sys/param.h
  stable/12/sys/sys/syslimits.h

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