# Copyright 1999-2026 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=8

# 6.11 is a non-LTS kernel that reached end-of-life upstream (linux-stable
# stopped at 6.11.11). The trunk-pinned patches captured here track
# stable all the way to 6.11.11 — full coverage for this EOL branch.
#
# Per-branch judgment on 5xxx (genpatches "experimental" category):
#   * 5010_enable-cpu-optimizations-universal: NOT included. Same
#     pf-flavored-vanilla mismatch as 6.9/6.10.
#   * 5020_BMQ-and-PDS-io-scheduler + 5021_BMQ-and-PDS-gentoo-defaults:
#     NOT included. Out of scope for the model.
#
# x86 ISA-level Kconfig is NOT promoted into the curated subset on this
# slot. Reason: 1009_linux-6.11.10 (stack protector guard rename) and
# 2980_GCC15-gnu23-to-gnu11-fix both modify arch/x86/Makefile, while pf's
# arch/x86/Makefile would revert both. Hand-promoting pf's Makefile would
# regress 1009 (a security backport) and 2980 (a build correctness fix
# for GCC 15+). Without pf's Makefile, pf's Kconfig.cpu (with MK8SSE3,
# MZEN, MZEN2 etc.) would advertise options the compiler can't actually
# act on, so we drop both arch/x86/Kconfig.cpu and arch/x86/Makefile from
# the curated subset. Users see standard vanilla x86 family selection;
# this is the price of keeping linux-stable security+build fixes.

ETYPE="sources"

K_NOSETEXTRAVERSION="1"

K_SECURITY_UNSUPPORTED="1"

SHPV="${PV/_p*/}"
PFPV="${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/"

# Per-slot snapshot of alicef's genpatches trunk (a live working dir),
# bundled as pf-genpatches-${SHPV}.tar.xz on the sister overlay extra-stuff
# (https://github.com/istitov/extra-stuff), pinned by immutable tag -r70-1
# (refresh = new tag suffix). The bundle is the durable reference.
SRC_URI="https://www.kernel.org/pub/linux/kernel/v6.x/linux-${SHPV}.tar.xz
	https://raw.githubusercontent.com/istitov/extra-stuff/pf-genpatches-${SHPV}-r70-1/sys-kernel/pf-sources-extended/pf-genpatches-${SHPV}.tar.xz -> pf-genpatches-${SHPV}-r70-1.tar.xz
	https://codeberg.org/istitov/extra-stuff/raw/tag/pf-genpatches-${SHPV}-r70-1/sys-kernel/pf-sources-extended/pf-genpatches-${SHPV}.tar.xz -> pf-genpatches-${SHPV}-r70-1.tar.xz
	https://gitlab.com/istitov/extra-stuff/-/raw/pf-genpatches-${SHPV}-r70-1/sys-kernel/pf-sources-extended/pf-genpatches-${SHPV}.tar.xz -> pf-genpatches-${SHPV}-r70-1.tar.xz
	https://raw.githubusercontent.com/istitov/extra-stuff/pf-curated-${SHPV}-r70-1/sys-kernel/pf-sources-extended/pf-curated-${SHPV}.tar.xz -> pf-curated-${SHPV}-r70-1.tar.xz
	https://codeberg.org/istitov/extra-stuff/raw/tag/pf-curated-${SHPV}-r70-1/sys-kernel/pf-sources-extended/pf-curated-${SHPV}.tar.xz -> pf-curated-${SHPV}-r70-1.tar.xz
	https://gitlab.com/istitov/extra-stuff/-/raw/pf-curated-${SHPV}-r70-1/sys-kernel/pf-sources-extended/pf-curated-${SHPV}.tar.xz -> pf-curated-${SHPV}-r70-1.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() {
	unpack ${A}
}

src_prepare() {
	eapply "${WORKDIR}/pf-genpatches-${SHPV}"/*.patch
	eapply "${WORKDIR}/pf-curated-${SHPV}"/*.patch
	default
}

pkg_postinst() {
	local KV_FULL="${PFPV}"
	kernel-2_pkg_postinst

	elog ""
	elog "gentoo-sources-based pf-sources-extended: tracks linux-stable through"
	elog "6.11.11 (full coverage — 6.11 ended at .11) via alicef's genpatches"
	elog "trunk, plus a curated subset of natalenko's pf-kernel delta. 6.11 is"
	elog "an EOL non-LTS branch — no further linux-stable backports will arrive."
	elog ""
	elog "Curated pf features kept: BBRv3, zstd bump, DDCCI, AMD-pstate,"
	elog "syscall.tbl additions, and mm/include hooks. NOTE: pf-style x86 ISA"
	elog "levels are NOT included on this branch — keeping stable's security/"
	elog "build fixes to arch/x86/Makefile means vanilla x86 family selection."
	elog ""
	elog "pf changes overlapping gentoo-sources' newer form (scheduler tweaks,"
	elog "arch/x86) and the opt-in BMQ/PDS + 5010 CPU-opt patches are dropped in"
	elog "favour of stable; see the ebuild header for the per-branch rationale."
	elog ""
	elog "For pf-kernel's full patchset (including ISA Kconfig + scheduler),"
	elog "install pf-sources-6.11_p4-r1 instead — it stays GA-frozen and still"
	elog "ships surgical CVE backports."
	elog ""

	optfeature "userspace KSM helper" sys-process/uksmd
}

pkg_postrm() {
	local KV_FULL="${PFPV}"
	kernel-2_pkg_postrm
}