test

# defconfig: framebuffer console for Limine's GOP handoff, zstd squashfs

# for the live image, NVMe and virtio (VMs) built in; the NICs are

# KERNEL_MODULES, only the Realtek PHY driver r8169 needs stays built in

# (phylib asks request_module for it while r8169 probes); plus the bool

# options of the GPU modules (amdgpu: SI and CIK cards, which radeon

# would drive otherwise, and the HSA/KFD compute driver ROCm talks to);

# plus what the initramfs needs to find the live image (loop,

# iso9660) and to make it writable (overlayfs over tmpfs); the kernel

# file servers sharedd drives: ksmbd (SMB_SERVER) and knfsd (NFSD, NFSv4),

# and its iSCSI targets (LIO over configfs: TARGET_CORE, ISCSI_TARGET);

# the md RAID levels storaged sets up (0, 1, 10, 4/5/6); and

# device-mapper for its LVM (linear/striped are always built in);

# bonding and bridging for syslite's .netdev devices (webctl's network page);

# veth pairs, the memory cgroup and BPF for cgroups (the device filter)

# for containerd's containers; BPF for libbpf/bpftool beyond that: tc

# (cls_bpf, act_bpf, the ingress/clsact qdisc), AF_XDP sockets, sockmap

# (stream parser), fentry/fexit and syscall tracepoints (function tracer,

# dynamic ftrace), BPF LSM (CONFIG_LSM's default list already has bpf),

# (phylib asks for it while r8169 probes, from the initramfs on); plus

# the bool options of the modules: amdgpu's SI and CIK cards (which

# radeon would drive otherwise) and the HSA/KFD compute driver ROCm talks

# to, NFSv4 for knfsd, the md menu, the SCSI low-level drivers' menu;

# plus what the initramfs needs to find the live image (loop, iso9660)

# and to make it writable (overlayfs over tmpfs); the memory cgroup and

# BPF for cgroups (the device filter) for containerd's containers; BPF

# for libbpf/bpftool beyond that: AF_XDP sockets, sockmap (stream

# parser), fentry/fexit and syscall tracepoints (function tracer, dynamic

# ftrace), BPF LSM (CONFIG_LSM's default list already has bpf),

# /sys/kernel/kheaders.tar.xz for building BPF programs on the target,

# and the JIT without the interpreter fallback (no BTF: needs pahole);

# the software iSCSI initiator iscsid drives

# (iscsi_tcp with the iSCSI transport class);

# and the JIT without the interpreter fallback;

# USB sticks and the file systems an ISO file may lie on (Ventoy: exFAT,

# also NTFS, FAT, ext4), so the initramfs finds a live ISO that isn't a CD;

# the hwmon temperature sensors webctl's dashboard reads from

# /sys/class/hwmon of NVMe and SATA drives (coretemp, k10temp and

# x86_pkg_temp_thermal are KERNEL_MODULES).

# /sys/class/hwmon of NVMe and SATA drives (drivetemp has no modalias).

KERNEL_OPTIONS="SYSFB SYSFB_SIMPLEFB DRM DRM_SIMPLEDRM DRM_FBDEV_EMULATION FB FB_CORE

    FRAMEBUFFER_CONSOLE FRAMEBUFFER_CONSOLE_DETECT_PRIMARY SQUASHFS SQUASHFS_ZSTD SQUASHFS_XATTR

    SQUASHFS_FILE_DIRECT NETDEVICES ETHERNET NET_VENDOR_REALTEK PHYLIB REALTEK_PHY BLK_DEV_NVME

    VIRTIO_INPUT VIRTIO_MMIO BLK_DEV_LOOP ISO9660_FS DEVTMPFS DEVTMPFS_MOUNT OVERLAY_FS TMPFS

    NET_VENDOR_INTEL NET_VENDOR_AQUANTIA

    DRM_AMDGPU_SI DRM_AMDGPU_CIK DRM_AMDGPU_USERPTR HSA_AMD

    NETWORK_FILESYSTEMS SMB_SERVER NFSD NFSD_V4 NFSD_LEGACY_CLIENT_TRACKING

    MD BLK_DEV_MD MD_RAID0 MD_RAID1 MD_RAID10 MD_RAID456 BLK_DEV_DM

    BONDING BRIDGE WIREGUARD DEBUG_INFO_DWARF5 DEBUG_INFO_BTF

    VETH MEMCG BPF_SYSCALL CGROUP_BPF BPF_JIT

    BPF_JIT_ALWAYS_ON NET_CLS_BPF NET_ACT_BPF NET_SCH_INGRESS XDP_SOCKETS BPF_STREAM_PARSER

    NETWORK_FILESYSTEMS NFSD_V4 NFSD_LEGACY_CLIENT_TRACKING MD SCSI_LOWLEVEL

    DEBUG_INFO_DWARF5 DEBUG_INFO_BTF

    MEMCG BPF_SYSCALL CGROUP_BPF BPF_JIT

    BPF_JIT_ALWAYS_ON XDP_SOCKETS BPF_STREAM_PARSER

    FUNCTION_TRACER DYNAMIC_FTRACE FTRACE_SYSCALLS BPF_LSM IKHEADERS

    SCSI_LOWLEVEL SCSI_ISCSI_ATTRS ISCSI_TCP

    CONFIGFS_FS TARGET_CORE TCM_IBLOCK TCM_FILEIO ISCSI_TARGET

    NVME_HWMON SENSORS_DRIVETEMP

    USB_STORAGE USB_UAS EXFAT_FS NTFS3_FS FAT_FS VFAT_FS NLS NLS_CODEPAGE_437 NLS_ISO8859_1 NLS_UTF8"

# DEBUG_INFO_BTF needs DWARF (pahole turns it into BTF): DWARF5 replaces

# defconfig's DEBUG_INFO_NONE in that choice

KERNEL_OPTIONS_OFF="DEBUG_INFO_NONE"

# Hardware drivers the boot does not need, as modules (=m, also where

# defconfig builds them in): the initramfs has no modules, syslite loads

# them from the root file system by the devices' modalias (coldplug, then

# uevents). Only drivers that are loaded by modalias: fresh's modprobe is

# no request_module() helper (no /sbin/modprobe, no -q, no aliases), so

# what the kernel requests by name (rtnl-link-bridge, fs-nfsd, md-raid1,

# phy drivers, ...) stays in KERNEL_OPTIONS. GPUs: amdgpu (GCN 1.0 and

# newer), radeon (older AMD/ATI), nouveau (NVIDIA; GSP firmware for Turing

# and newer), i915 and xe (Intel); they load their firmware while probing,

# which a built-in driver could not (no root file system yet). simpledrm

# keeps the console on the firmware framebuffer until they take over.

# NICs: the Realtek, Intel and Aquantia ones of KERNEL_OPTIONS and the

# ones defconfig builds in. Sound (the HDA controller by modalias, its

# codecs by request_module; defconfig has none, so no sound before): the

# generic parser, Realtek, HDMI/DisplayPort of the GPUs, Conexant, Cirrus,

# SigmaTel/IDT, Analog Devices, VIA. The CPU temperature sensors

# webctl's dashboard reads (coretemp, k10temp; cpu modalias), the WLAN

# stack, the NFS and 9p clients (fs-<type> when mounted), Intel MEI, the

# i801 SMBus and USB printers.

# Built in although not needed to boot: what the daemons expect to be

# there without loading it -- ksmbd, nfsd (sharedd mounts its file system

# on /proc/fs/nfsd, which only the module makes), LIO (sharedd), md and

# device-mapper (storaged), iscsi_tcp (iscsid), the bond/bridge/veth/

# wireguard devices (syslite, containerd), drivetemp (no modalias).

# What the boot does not need, as modules (=m, also where defconfig builds

# it in): the initramfs has no modules. syslite loads the drivers of the

# devices from the root file system by their modalias (coldplug, then

# uevents); the kernel asks fresh's modprobe (KERNEL_MODPROBE_PATH) for

# what it requests by name (rtnl-link-bridge, fs-nfs, md-raid1, sch_ingress,

# snd-hda codecs, target_core_iblock, ...); the daemons load what has no

# such trigger themselves: sharedd ksmbd, nfsd and target_core_mod (LIO),

# storaged md_mod and dm_mod, iscsid iscsi_tcp. No md or dm root file

# system therefore (the installer doesn't make one).

# GPUs: amdgpu (GCN 1.0 and newer), radeon (older AMD/ATI), nouveau

# (NVIDIA; GSP firmware for Turing and newer), i915 and xe (Intel); they

# load their firmware while probing, which a built-in driver could not (no

# root file system yet). simpledrm keeps the console on the firmware

# framebuffer until they take over.

# NICs: Realtek, Intel, Aquantia and the ones defconfig builds in.

# Sound (defconfig has no HDA codecs, so no sound before): the generic

# parser, Realtek, HDMI/DisplayPort of the GPUs, Conexant, Cirrus,

# SigmaTel/IDT, Analog Devices, VIA. The CPU temperature sensors webctl's

# dashboard reads (coretemp, k10temp; cpu modalias), the WLAN stack, the

# NFS and 9p clients, Intel MEI, the i801 SMBus and USB printers.

# The kernel file servers sharedd drives: ksmbd and knfsd, and its iSCSI

# targets (LIO over configfs); the md RAID levels storaged sets up (0, 1,

# 10, 4/5/6) and device-mapper for its LVM; bonding and bridging for

# syslite's .netdev devices (webctl's network page; modprobe.d from syslite

# keeps bonding from making a bond0 of its own), wireguard; veth pairs for

# containerd's containers; tc for BPF (cls_bpf, act_bpf, the

# ingress/clsact qdisc); the software iSCSI initiator iscsid drives.

KERNEL_MODULES="DRM_AMDGPU DRM_RADEON DRM_NOUVEAU DRM_I915 DRM_XE

    R8169 E100 E1000 E1000E IGB IGC IGBVF IXGBE IXGBEVF I40E ICE AQTION

    8139TOO FORCEDETH SKY2 TIGON3

    SND_HDA_CODEC_ANALOG SND_HDA_CODEC_VIA

    SENSORS_CORETEMP SENSORS_K10TEMP X86_PKG_TEMP_THERMAL

    CFG80211 MAC80211 RFKILL NFS_FS 9P_FS NET_9P

    INTEL_MEI INTEL_MEI_ME I2C_I801 USB_PRINTER"

    INTEL_MEI INTEL_MEI_ME I2C_I801 USB_PRINTER

    SMB_SERVER NFSD CONFIGFS_FS TARGET_CORE TCM_IBLOCK TCM_FILEIO ISCSI_TARGET

    BLK_DEV_MD MD_RAID0 MD_RAID1 MD_RAID10 MD_RAID456 BLK_DEV_DM

    BONDING BRIDGE WIREGUARD VETH NET_CLS_BPF NET_ACT_BPF NET_SCH_INGRESS

    SCSI_ISCSI_ATTRS ISCSI_TCP"

# the kernel's request_module() helper: fresh's modprobe (-q, aliases from

# depmod's modules.alias, built-in modules); fresh has no /sbin/modprobe

KERNEL_MODPROBE_PATH="/bin/modprobe"