4 files changed, 74 insertions, 13 deletions
diff --git a/sys-kernel/linux/files/config_prepare.sh b/sys-kernel/linux/files/config_prepare.sh
index 0d3409f..f4ae6d4 100755
--- a/sys-kernel/linux/files/config_prepare.sh
+++ b/sys-kernel/linux/files/config_prepare.sh
@@ -3,8 +3,24 @@ set -e
 
 B="$(dirname $0)"
 
-# First just deploy arch linux configuration (ah yes I stole it)
-cp "$B"/arch.config .config
+BASE=arch.config
+OVERLAY=overlay.config
+
+if [ "$1" = "virt" ]; then
+	BASE=
+	OVERLAY=virt.config
+fi
+#################################################################################
+
+# First just deploy base configuration (provided or just kernel default)
+if [ -n "$BASE" ]; then
+	cp "$B/$BASE" .config
+else
+	make defconfig
+fi
+
+# We are done if no overlay is specified
+[ -n "$OVERLAY" ] || exit 0
 
 # And now apply changes from overlay.config
 while read L; do
@@ -15,7 +31,7 @@ while read L; do
 	sed -i "#^$OPTION#d" .config
 	# Put config
 	echo "$L" >> .config
-done < "$B/overlay.config"
+done < "$B/$OVERLAY"
 
 # As next step run olddefconfig (note: stderr contains some output about overrided
 # options so I am ignoring it)
@@ -39,6 +55,6 @@ while read L; do
 			echo -e "\e[1;31mN:\e[0m$L"
 		fi
 	fi
-done < "$B/overlay.config"
+done < "$B/$OVERLAY"
 
 exit $EC
diff --git a/sys-kernel/linux/files/overlay.config b/sys-kernel/linux/files/overlay.config
index 1dde514..8e93b4a 100644
--- a/sys-kernel/linux/files/overlay.config
+++ b/sys-kernel/linux/files/overlay.config
@@ -69,10 +69,3 @@ CONFIG_BINFMT_SCRIPT=y
 
 # Options enabled just to make previous options enabled
 CONFIG_LEDS_CLASS=y
-
-# For virtual
-CONFIG_VIRTIO_PCI=y
-CONFIG_VIRTIO_MMIO=y
-CONFIG_VIRTIO_BLK=y
-CONFIG_VIRTIO_NET=y
-CONFIG_SCSI_VIRTIO=y
diff --git a/sys-kernel/linux/files/virt.config b/sys-kernel/linux/files/virt.config
new file mode 100644
index 0000000..a0cee7c
--- /dev/null
+++ b/sys-kernel/linux/files/virt.config
@@ -0,0 +1,52 @@
+# No logo
+CONFIG_LOGO=n
+CONFIG_LOCALVERSION="virt"
+# Compile BTRFS in kernel
+CONFIG_BTRFS_FS=y
+
+# Enable guest configurations
+CONFIG_HYPERVISOR_GUEST=y
+CONFIG_PARAVIRT=y
+CONFIG_PARAVIRT_SPINLOCKS=y
+CONFIG_KVM_GUEST=y
+
+# VirtIO drivers
+CONFIG_VIRTIO_PCI=y
+CONFIG_VIRTIO_BALLOON=y
+CONFIG_VIRTIO_INPUT=y
+CONFIG_VIRTIO_MMIO=y
+CONFIG_VIRTIO_BLK=y
+CONFIG_VIRTIO_NET=y
+CONFIG_SCSI_LOWLEVEL=y
+CONFIG_SCSI_VIRTIO=y
+
+# Wireguard
+CONFIG_NET_FOU=y
+CONFIG_NETFILTER_ADVANCED=y
+CONFIG_NF_CONNTRACK=y
+CONFIG_NETFILTER_XTABLES=y
+CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=y
+CONFIG_CRYPTO_PCRYPT=y
+
+# Build configuration into the kernel but as module
+CONFIG_IKCONFIG=m
+CONFIG_IKCONFIG_PROC=y
+
+# Chromium requires user namespace sandbox?
+CONFIG_USER_NS=y
+
+## Gentoo specific just to be sure
+# Udev
+CONFIG_DEVTMPFS=y
+CONFIG_TMPFS=y
+CONFIG_UNIX=y
+CONFIG_MMU=y
+CONFIG_SHMEM=y
+# Portage
+CONFIG_CGROUPS=y
+CONFIG_NAMESPACES=y
+CONFIG_IPC_NS=y
+CONFIG_NET_NS=y
+CONFIG_SYSVIPC=y
+# OpenRC
+CONFIG_BINFMT_SCRIPT=y
diff --git a/sys-kernel/linux/linux-4.13.13-r1.ebuild b/sys-kernel/linux/linux-4.13.13-r1.ebuild
index 7bfb86d..dfa5f0a 100644
--- a/sys-kernel/linux/linux-4.13.13-r1.ebuild
+++ b/sys-kernel/linux/linux-4.13.13-r1.ebuild
@@ -14,7 +14,7 @@ S="${WORKDIR}/linux-stable-${VER}"
 LICENSE="GPLv2"
 SLOT="${PV}"
 KEYWORDS="amd64 ~x86"
-IUSE=""
+IUSE="virt"
 
 DEPEND="sys-devel/bc"
 RDEPEND="sys-boot/myinitramfs"
@@ -23,7 +23,7 @@ src_configure() {
 	# Fix ARCH variable
 	[ "$ARCH" = "amd64" ] && ARCH="x86"
 
-	"${FILESDIR}"/config_prepare.sh || die "Configuration application failed"
+	"${FILESDIR}"/config_prepare.sh $(usev virt) || die "Configuration application failed"
 }
 
 src_install() {