app-emulation/xen: add 4.15.3

Bug: https://bugs.gentoo.org/850802
Signed-off-by: Florian Schmaus <flow@gentoo.org>
Closes: https://github.com/gentoo/gentoo/pull/26217
Closes: https://github.com/gentoo/gentoo/pull/25839

1 files changed, 183 insertions, 0 deletions

diff --git a/app-emulation/xen/xen-4.15.3.ebuild b/app-emulation/xen/xen-4.15.3.ebuild
new file mode 100644
index 000000000000..be0c811dcf7f
--- /dev/null
+++ b/app-emulation/xen/xen-4.15.3.ebuild
@@ -0,0 +1,183 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{8..10} )
+
+inherit flag-o-matic mount-boot python-any-r1 toolchain-funcs
+
+if [[ ${PV} == *9999 ]]; then
+	inherit git-r3
+	EGIT_REPO_URI="git://xenbits.xen.org/xen.git"
+	SRC_URI=""
+else
+	KEYWORDS="~amd64 ~arm -x86"
+
+	XEN_PRE_PATCHSET_NUM=
+	XEN_GENTOO_PATCHSET_NUM=
+	XEN_PRE_VERSION_BASE=
+
+	XEN_BASE_PV="${PV}"
+	if [[ -n "${XEN_PRE_VERSION_BASE}" ]]; then
+		XEN_BASE_PV="${XEN_PRE_VERSION_BASE}"
+	fi
+
+	SRC_URI="https://downloads.xenproject.org/release/xen/${XEN_BASE_PV}/xen-${XEN_BASE_PV}.tar.gz"
+
+	if [[ -n "${XEN_PRE_PATCHSET_NUM}" ]]; then
+		XEN_UPSTREAM_PATCHES_TAG="$(ver_cut 1-3)-pre-patchset-${XEN_PRE_PATCHSET_NUM}"
+		XEN_UPSTREAM_PATCHES_NAME="xen-upstream-patches-${XEN_UPSTREAM_PATCHES_TAG}"
+		SRC_URI+=" https://github.com/Flowdalic/xen-upstream-patches/archive/refs/tags/${XEN_UPSTREAM_PATCHES_TAG}.tar.gz -> ${XEN_UPSTREAM_PATCHES_NAME}.tar.gz"
+		XEN_UPSTREAM_PATCHES_DIR="${WORKDIR}/${XEN_UPSTREAM_PATCHES_NAME}"
+	fi
+	if [[ -n "${XEN_GENTOO_PATCHSET_NUM}" ]]; then
+		XEN_GENTOO_PATCHES_TAG="4.16.1-gentoo-patchset-${XEN_GENTOO_PATCHSET_NUM}"
+		XEN_GENTOO_PATCHES_NAME="xen-gentoo-patches-${XEN_GENTOO_PATCHES_TAG}"
+		SRC_URI+=" https://github.com/Flowdalic/xen-gentoo-patches/archive/refs/tags/${XEN_GENTOO_PATCHES_TAG}.tar.gz -> ${XEN_GENTOO_PATCHES_NAME}.tar.gz"
+		XEN_GENTOO_PATCHES_DIR="${WORKDIR}/${XEN_GENTOO_PATCHES_NAME}"
+	fi
+fi
+
+DESCRIPTION="The Xen virtual machine monitor"
+HOMEPAGE="https://xenproject.org"
+
+S="${WORKDIR}/xen-$(ver_cut 1-3 ${XEN_BASE_PV})"
+
+LICENSE="GPL-2"
+SLOT="0"
+IUSE="debug efi flask"
+REQUIRED_USE="arm? ( debug )"
+
+DEPEND="${PYTHON_DEPS}
+	efi? ( >=sys-devel/binutils-2.22[multitarget] )
+	!efi? ( >=sys-devel/binutils-2.22 )
+	flask? ( sys-apps/checkpolicy )"
+RDEPEND=""
+PDEPEND="~app-emulation/xen-tools-${PV}"
+
+# no tests are available for the hypervisor
+# prevent the silliness of /usr/lib/debug/usr/lib/debug files
+# prevent stripping of the debug info from the /usr/lib/debug/xen-syms
+RESTRICT="test splitdebug strip"
+
+# Approved by QA team in bug #144032
+QA_WX_LOAD="boot/xen-syms-${PV}"
+
+pkg_setup() {
+	python-any-r1_pkg_setup
+	if [[ -z ${XEN_TARGET_ARCH} ]]; then
+		if use amd64; then
+			export XEN_TARGET_ARCH="x86_64"
+		elif use arm; then
+			export XEN_TARGET_ARCH="arm32"
+		elif use arm64; then
+			export XEN_TARGET_ARCH="arm64"
+		else
+			die "Unsupported architecture!"
+		fi
+	fi
+}
+
+src_prepare() {
+	if [[ -v XEN_UPSTREAM_PATCHES_DIR ]]; then
+		eapply "${XEN_UPSTREAM_PATCHES_DIR}"
+	fi
+
+	if [[ -v XEN_GENTOO_PATCHES_DIR ]]; then
+		eapply "${XEN_GENTOO_PATCHES_DIR}"
+	fi
+
+	eapply "${FILESDIR}"/${PN}-4.15-efi.patch
+
+	# Enable XSM-FLASK
+	use flask && eapply "${FILESDIR}"/${PN}-4.15-flask.patch
+
+	# Workaround new gcc-11 options
+	sed -e '/^CFLAGS/s/-Werror//g' -i xen/Makefile || die
+
+	# Drop .config
+	sed -e '/-include $(XEN_ROOT)\/.config/d' -i Config.mk || die "Couldn't	drop"
+
+	if use efi; then
+		export EFI_VENDOR="gentoo"
+		export EFI_MOUNTPOINT="/boot"
+	fi
+
+	default
+}
+
+xen_make() {
+	# Setting clang to either 'y' or 'n' tells Xen's build system
+	# whether or not clang is used.
+	local clang=n
+	if tc-is-clang; then
+		clang=y
+	fi
+
+	# Send raw LDFLAGS so that --as-needed works
+	emake \
+		V=1 \
+		LDFLAGS="$(raw-ldflags)" \
+		HOSTCC="$(tc-getBUILD_CC)" \
+		HOSTCXX="$(tc-getBUILD_CXX)" \
+		clang="${clang}" \
+		"$@"
+}
+
+src_configure() {
+	cd xen || die
+
+	touch gentoo-config || die
+	if use arm; then
+	   echo "CONFIG_EARLY_PRINTK=sun7i" >> gentoo-config || die
+	fi
+	if use debug; then
+		cat <<-EOF >> gentoo-config || die
+		CONFIG_DEBUG=y
+		CONFIG_CRASH_DEBUG=y
+EOF
+	fi
+	if use flask; then
+		echo "CONFIG_XSM=y" >> gentoo-config || die
+	fi
+
+	# remove flags
+	unset CFLAGS
+
+	tc-ld-disable-gold # Bug 700374
+
+	xen_make KCONFIG_ALLCONFIG=gentoo-config alldefconfig
+}
+
+src_compile() {
+	xen_make -C xen
+}
+
+src_install() {
+	# The 'make install' doesn't 'mkdir -p' the subdirs
+	if use efi; then
+		mkdir -p "${D}"${EFI_MOUNTPOINT}/efi/${EFI_VENDOR} || die
+	fi
+
+	xen_make DESTDIR="${D}" -C xen install
+
+	# make install likes to throw in some extra EFI bits if it built
+	use efi || rm -rf "${D}/usr/$(get_libdir)/efi"
+}
+
+pkg_postinst() {
+	elog "Official Xen Guide:"
+	elog " https://wiki.gentoo.org/wiki/Xen"
+
+	use efi && einfo "The efi executable is installed in /boot/efi/gentoo"
+
+	ewarn
+	ewarn "Xen 4.12+ changed the default scheduler to credit2 which can cause"
+	ewarn "domU lockups on multi-cpu systems. The legacy credit scheduler seems"
+	ewarn "to work fine."
+	ewarn
+	ewarn "Add sched=credit to xen command line options to use the legacy scheduler."
+	ewarn
+	ewarn "https://wiki.gentoo.org/wiki/Xen#Xen_domU_hanging_with_Xen_4.12.2B"
+}