# Copyright 1999-2026 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
ETYPE="sources"
# Track the latest 6.18.X linux-stable via genpatches. Match
# gentoo-sources-6.18.39's K_GENPATCHES_VER. verified 2026-07-24.
K_GENPATCHES_VER="46"
# Curated pf delta sets EXTRAVERSION via the patch itself.
K_NOSETEXTRAVERSION="1"
# K_SECURITY_UNSUPPORTED is set because the curated pf delta is not
# covered by Gentoo's security
# team — bugs in the pf-specific portions (BBRv3, x86 ISA levels, AESNI
# crypto bump, v4l2loopback) need to be reported to natalenko or the
# overlay maintainers.
K_SECURITY_UNSUPPORTED="1"
K_WANT_GENPATCHES="base extras"
# Map "6.18_p6" → "6.18" for the kernel.org tarball + genpatches.
SHPV="${PV/_p*/}"
# Pretend version visible in /lib/modules and /usr/src.
PFPV="${PV/_p/-pf}"
inherit kernel-2 optfeature
DESCRIPTION="Linux kernel: gentoo-sources base + curated pf-kernel patchset"
HOMEPAGE="https://pfkernel.natalenko.name/
https://dev.gentoo.org/~alicef/genpatches/"
# Vanilla 6.18 from kernel.org + Gentoo's genpatches (stable + non-stable)
# + our curated pf delta. The codeberg pf-kernel tarball is intentionally
# not fetched — its content is replaced by the much smaller curated bundle
# hosted in the stuff overlay's sister 'extra-stuff' repo.
SRC_URI="https://www.kernel.org/pub/linux/kernel/v6.x/linux-${SHPV}.tar.xz
https://distfiles.gentoo.org/pub/proj/kernel/genpatches/genpatches-${SHPV}-${K_GENPATCHES_VER}.base.tar.xz
https://dev.gentoo.org/~alicef/dist/genpatches/genpatches-${SHPV}-${K_GENPATCHES_VER}.base.tar.xz
https://dev.gentoo.org/~mpagano/dist/genpatches/genpatches-${SHPV}-${K_GENPATCHES_VER}.base.tar.xz
https://distfiles.gentoo.org/pub/proj/kernel/genpatches/genpatches-${SHPV}-${K_GENPATCHES_VER}.extras.tar.xz
https://dev.gentoo.org/~alicef/dist/genpatches/genpatches-${SHPV}-${K_GENPATCHES_VER}.extras.tar.xz
https://dev.gentoo.org/~mpagano/dist/genpatches/genpatches-${SHPV}-${K_GENPATCHES_VER}.extras.tar.xz
https://raw.githubusercontent.com/istitov/extra-stuff/pf-curated-${SHPV}-r70-2/sys-kernel/pf-sources-extended/pf-curated-${SHPV}.tar.xz -> pf-curated-${SHPV}-r70-2.tar.xz
https://codeberg.org/istitov/extra-stuff/raw/tag/pf-curated-${SHPV}-r70-2/sys-kernel/pf-sources-extended/pf-curated-${SHPV}.tar.xz -> pf-curated-${SHPV}-r70-2.tar.xz
https://gitlab.com/istitov/extra-stuff/-/raw/pf-curated-${SHPV}-r70-2/sys-kernel/pf-sources-extended/pf-curated-${SHPV}.tar.xz -> pf-curated-${SHPV}-r70-2.tar.xz"
S="${WORKDIR}/linux-${SHPV}"
KEYWORDS=""
K_EXTRAEINFO="For more info on pf-kernel and details on how to report problems,
see: ${HOMEPAGE}."
pkg_setup() {
ewarn ""
ewarn "${PN} is *not* supported by the Gentoo Kernel Project. For support,"
ewarn "open an issue at https://github.com/istitov/stuff/issues. Do *not* use"
ewarn "Gentoo's bugzilla unless the problem is in the ebuild itself."
ewarn ""
kernel-2_pkg_setup
}
src_unpack() {
# Vanilla kernel.org tarball unpacks to linux-${SHPV} directly; no
# rename needed.
unpack ${A}
}
src_prepare() {
# Apply genpatches stack. Unlike pf-sources -r1, we DO NOT delete
# `1*linux*.patch` — the linux-stable backport chain
# (1000_linux-${SHPV}.1.patch through 1NNN_linux-${SHPV}.X.patch)
# is the entire point of this revision.
eapply "${WORKDIR}"/*.patch
# Curated pf-kernel delta on top of gentoo-sources state (r70-2).
# Numbered series of per-feature patches re-cut against the 6.18.33
# base; BBR3 (0002) re-cut 2026-05-24 because K=37's 1032 patch
# changed tcp_bbr.c/tcp.h/tcp_output.c context. See pkg_postinst.
eapply "${WORKDIR}/pf-curated-${SHPV}"/*.patch
default
}
pkg_postinst() {
# Fixes "wrongly" detected directory name, bgo#862534.
local KV_FULL="${PFPV}"
kernel-2_pkg_postinst
elog ""
elog "gentoo-sources-based pf-sources-extended: tracks linux-stable (6.18.X)"
elog "via Gentoo's genpatches, plus a curated subset of natalenko's pf-kernel"
elog "delta. CVE backports now arrive automatically with each gentoo-sources"
elog "stable bump."
elog ""
elog "Curated pf features kept: BBRv3, x86 ISA levels (arch/x86/Kconfig.cpu +"
elog "Makefile), AES-NI/AVX10/VAES crypto, v4l2loopback, and mm/include hooks."
elog ""
elog "pf changes overlapping gentoo-sources' newer form (the teo/menu cpuidle"
elog "governors, scheduler/futex tweaks) are dropped in favour of stable."
elog ""
elog "Known limitations: 0002-bbr3 reverts ~7 of K=37's WRITE_ONCE conversions"
elog "in net/ipv4/tcp_{output,timer}.c (x86-64 impact: KCSAN-only), and 0004"
elog "re-introduces AS_NO_DATA_INTEGRITY (no consumers). No 6.18-compatible"
elog "BBR3 source has been rebased on a newer base upstream; verified 2026-05-24."
elog ""
elog "For pf-kernel's full patchset, install pf-sources-6.18_p6-r1 instead —"
elog "it stays GA-frozen and still ships surgical CVE backports."
elog ""
optfeature "userspace KSM helper" sys-process/uksmd
}
pkg_postrm() {
# Same here, bgo#862534.
local KV_FULL="${PFPV}"
kernel-2_pkg_postrm
}