docs: changes.rst: restore pahole 1.26 minimum (regressed by sort)

Commit 9edd04c4189e ("docs: Raise minimum pahole version to 1.26 for
KF_IMPLICIT_ARGS kfuncs") raised the minimum required pahole version
from 1.22 to 1.26 in the requirements table and added a paragraph
explaining the failure mode for distributions still shipping pahole
v1.25 (e.g. Ubuntu 24.04 LTS).

The next day, commit ece7e57afd51 ("docs: changes.rst and ver_linux:
sort the lists") came through a different tree (docs vs sched_ext) and
re-flowed the table alphabetically, but its base did not include
9edd04c4189e.  When the two commits met in mainline, the textual rewrite
of the table won and the version bump was lost.  The added "Since Linux
7.0..." paragraph also disappeared.

The result is that changes.rst on master (v7.1-rc5) lists pahole 1.22
again, even though sched_ext kfuncs annotated with KF_IMPLICIT_ARGS
genuinely require v1.26 to produce a correct vmlinux BTF.  Users on
distributions with pahole v1.25 hit "func_proto incompatible with
vmlinux" when loading any sched_ext BPF program (scx_simple,
scx_qmap, ...) and have no documentation pointing them at the version
gap.

Restore both changes from 9edd04c4189e.

Fixes: ece7e57afd51 ("docs: changes.rst and ver_linux: sort the lists")
Signed-off-by: Zhan Xusheng <zhanxusheng@xiaomi.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260526022033.1301884-1-zhanxusheng@xiaomi.com>

0 files changed, 0 insertions, 0 deletions