[PATCH RESEND 00/62] initrd: remove classic initrd support
Askar Safin
safinaskar at gmail.com
Sat Sep 13 10:37:39 AEST 2025
Intro
====
This patchset removes classic initrd (initial RAM disk) support,
which was deprecated in 2020.
Initramfs still stays, and RAM disk itself (brd) still stays, too.
init/do_mounts* and init/*initramfs* are listed in VFS entry in
MAINTAINERS, so I think this patchset should go through VFS tree.
This patchset touchs every subdirectory in arch/, so I tested it
on 8 (!!!) archs in Qemu (see details below).
Warning: this patchset renames CONFIG_BLK_DEV_INITRD (!!!) to CONFIG_INITRAMFS
and CONFIG_RD_* to CONFIG_INITRAMFS_DECOMPRESS_* (for example,
CONFIG_RD_GZIP to CONFIG_INITRAMFS_DECOMPRESS_GZIP).
If you still use initrd, see below for workaround.
Details
====
I not only removed initrd, I also removed a lot of code, which
became dead, including a lot of code in arch/.
Still I think the only two architectures I touched in non-trivial
way are sh and 32-bit arm.
Also I renamed some files, functions and variables (which became misnomers) to proper names,
moved some code around, removed a lot of mentions of initrd
in code and comments. Also I cleaned up some docs.
For example, I renamed the following global variables:
__initramfs_start
__initramfs_size
phys_initrd_start
phys_initrd_size
initrd_start
initrd_end
to:
__builtin_initramfs_start
__builtin_initramfs_size
phys_external_initramfs_start
phys_external_initramfs_size
virt_external_initramfs_start
virt_external_initramfs_end
New names precisely capture meaning of these variables.
Also I renamed CONFIG_BLK_DEV_INITRD (which became total misnomer)
to CONFIG_INITRAMFS. And CONFIG_RD_* to CONFIG_INITRAMFS_DECOMPRESS_*.
This will break all configs out there (update your configs!).
Still I think this is okay,
because config names never were part of stable API.
Still, I don't have strong opinion here, so I can drop these renamings
if needed.
Other user-visible changes:
- Removed kernel command line parameters "load_ramdisk" and
"prompt_ramdisk", which did nothing and were deprecated
- Removed kernel command line parameter "ramdisk_start",
which was used for initrd only (not for initramfs)
- Removed kernel command line parameter "noinitrd",
which was inconsistent: it controlled initrd only
(not initramfs), except for EFI boot, where it
controlled both initramfs and initrd. EFI users
still can disable initramfs simply by not passing it
- Removed kernel command line parameter "ramdisk_size",
which used for controlling ramdisk (brd), but only
in non-modular mode. Use brd.rd_size instead, it
always works
- Removed /proc/sys/kernel/real-root-dev . It was used
for initrd only
This patchset is based on v6.17-rc5.
Testing
====
I tested my patchset on many architectures in Qemu using my Rust
program, heavily based on mkroot [1].
I used the following cross-compilers:
aarch64-linux-musleabi
armv4l-linux-musleabihf
armv5l-linux-musleabihf
armv7l-linux-musleabihf
i486-linux-musl
i686-linux-musl
mips-linux-musl
mips64-linux-musl
mipsel-linux-musl
powerpc-linux-musl
powerpc64-linux-musl
powerpc64le-linux-musl
riscv32-linux-musl
riscv64-linux-musl
s390x-linux-musl
sh4-linux-musl
sh4eb-linux-musl
x86_64-linux-musl
taken from this directory [2].
So, as you can see, there are 18 triplets, which correspond to 8 subdirs in arch/.
And note that this list contains two archs (arm and sh) touched in non-trivial way.
For every triplet I tested that:
- Initramfs still works (both builtin and external)
- Direct boot from disk still works
Workaround
====
If "retain_initrd" is passed to kernel, then initramfs/initrd,
passed by bootloader, is retained and becomes available after boot
as read-only magic file /sys/firmware/initrd [3].
No copies are involved. I. e. /sys/firmware/initrd is simply
a reference to original blob passed by bootloader.
This works even if initrd/initramfs is not recognized by kernel
in any way, i. e. even if it is not valid cpio archive, nor
a fs image supported by classic initrd.
This works both with my patchset and without it.
This means that you can emulate classic initrd so:
link builtin initramfs to kernel. In /init in this initramfs
copy /sys/firmware/initrd to some file in / and loop-mount it.
This is even better than classic initrd, because:
- You can use fs not supported by classic initrd, for example erofs
- One copy is involved (from /sys/firmware/initrd to some file in /)
as opposed to two when using classic initrd
Still, I don't recommend using this workaround, because
I want everyone to migrate to proper modern initramfs.
But still you can use this workaround if you want.
Also: it is not possible to directly loop-mount
/sys/firmware/initrd . Theoretically kernel can be changed
to allow this (and/or to make it writable), but I think nobody needs this.
And I don't want to implement this.
P. S. When I sent this patchset first time, zoho mail banned me for
too much email. So I resend this using gmail. The only change is
email change, there are no other changes
[1] https://github.com/landley/toybox/tree/master/mkroot
[2] https://landley.net/toybox/downloads/binaries/toolchains/latest
[3] https://lore.kernel.org/all/20231207235654.16622-1-graf@amazon.com/
Askar Safin (62):
init: remove deprecated "load_ramdisk" command line parameter, which
does nothing
init: remove deprecated "prompt_ramdisk" command line parameter, which
does nothing
init: sh, sparc, x86: remove unused constants RAMDISK_PROMPT_FLAG and
RAMDISK_LOAD_FLAG
init: x86, arm, sh, sparc: remove variable rd_image_start, which
controls starting block number of initrd
init: remove "ramdisk_start" command line parameter, which controls
starting block number of initrd
arm: init: remove special logic for setting brd.rd_size
arm: init: remove ATAG_RAMDISK
arm: init: remove FLAG_RDLOAD and FLAG_RDPROMPT
arm: init: document rd_start (in param_struct) as obsolete
initrd: remove initrd (initial RAM disk) support
init, efi: remove "noinitrd" command line parameter
init: remove /proc/sys/kernel/real-root-dev
ext2: remove ext2_image_size and associated code
init: m68k, mips, powerpc, s390, sh: remove Root_RAM0
doc: modernize Documentation/admin-guide/blockdev/ramdisk.rst
brd: remove "ramdisk_size" command line parameter
doc: modernize Documentation/filesystems/ramfs-rootfs-initramfs.rst
doc: modernize
Documentation/driver-api/early-userspace/early_userspace_support.rst
init: remove mentions of "ramdisk=" command line parameter
doc: remove Documentation/power/swsusp-dmcrypt.rst
init: remove all mentions of root=/dev/ram*
doc: remove obsolete mentions of pivot_root
init: rename __initramfs_{start,size} to
__builtin_initramfs_{start,size}
init: remove wrong comment
init: rename phys_initrd_{start,size} to
phys_external_initramfs_{start,size}
init: move phys_external_initramfs_{start,size} to init/initramfs.c
init: alpha: remove "extern unsigned long initrd_start, initrd_end"
init: alpha, arc, arm, arm64, csky, m68k, microblaze, mips, nios2,
openrisc, parisc, powerpc, s390, sh, sparc, um, x86, xtensa: rename
initrd_{start,end} to virt_external_initramfs_{start,end}
init: move virt_external_initramfs_{start,end} to init/initramfs.c
doc: remove documentation for block device 4 0
init: rename initrd_below_start_ok to initramfs_below_start_ok
init: move initramfs_below_start_ok to init/initramfs.c
init: remove init/do_mounts_initrd.c
init: inline create_dev into the only caller
init: make mount_root_generic static
init: make mount_root static
init: remove root_mountflags from init/do_mounts.h
init: remove most headers from init/do_mounts.h
init: make console_on_rootfs static
init: rename free_initrd_mem to free_initramfs_mem
init: rename reserve_initrd_mem to reserve_initramfs_mem
init: rename <linux/initrd.h> to <linux/initramfs.h>
setsid: inline ksys_setsid into the only caller
doc: kernel-parameters: remove [RAM] from reserve_mem=
doc: kernel-parameters: replace [RAM] with [INITRAMFS]
init: edit docs for initramfs-related configs
init: fix typo: virtul => virtual
init: fix comment
init: rename ramdisk_execute_command to initramfs_execute_command
init: rename ramdisk_command_access to initramfs_command_access
init: rename get_boot_config_from_initrd to
get_boot_config_from_initramfs
init: rename do_retain_initrd to retain_initramfs
init: rename kexec_free_initrd to kexec_free_initramfs
init: arm, x86: deal with some references to initrd
init: rename CONFIG_BLK_DEV_INITRD to CONFIG_INITRAMFS
init: rename CONFIG_RD_GZIP to CONFIG_INITRAMFS_DECOMPRESS_GZIP
init: rename CONFIG_RD_BZIP2 to CONFIG_INITRAMFS_DECOMPRESS_BZIP2
init: rename CONFIG_RD_LZMA to CONFIG_INITRAMFS_DECOMPRESS_LZMA
init: rename CONFIG_RD_XZ to CONFIG_INITRAMFS_DECOMPRESS_XZ
init: rename CONFIG_RD_LZO to CONFIG_INITRAMFS_DECOMPRESS_LZO
init: rename CONFIG_RD_LZ4 to CONFIG_INITRAMFS_DECOMPRESS_LZ4
init: rename CONFIG_RD_ZSTD to CONFIG_INITRAMFS_DECOMPRESS_ZSTD
.../admin-guide/blockdev/ramdisk.rst | 104 +----
.../admin-guide/device-mapper/dm-init.rst | 4 +-
Documentation/admin-guide/devices.txt | 12 -
Documentation/admin-guide/index.rst | 1 -
Documentation/admin-guide/initrd.rst | 383 ------------------
.../admin-guide/kernel-parameters.rst | 4 +-
.../admin-guide/kernel-parameters.txt | 38 +-
Documentation/admin-guide/nfs/nfsroot.rst | 4 +-
Documentation/admin-guide/sysctl/kernel.rst | 6 -
Documentation/arch/arm/ixp4xx.rst | 4 +-
Documentation/arch/arm/setup.rst | 6 +-
Documentation/arch/m68k/kernel-options.rst | 29 +-
Documentation/arch/x86/boot.rst | 4 +-
.../early_userspace_support.rst | 18 +-
.../filesystems/ramfs-rootfs-initramfs.rst | 20 +-
Documentation/power/index.rst | 1 -
Documentation/power/swsusp-dmcrypt.rst | 140 -------
Documentation/security/ipe.rst | 2 +-
.../translations/zh_CN/power/index.rst | 1 -
arch/alpha/kernel/core_irongate.c | 12 +-
arch/alpha/kernel/proto.h | 2 +-
arch/alpha/kernel/setup.c | 32 +-
arch/arc/configs/axs101_defconfig | 2 +-
arch/arc/configs/axs103_defconfig | 2 +-
arch/arc/configs/axs103_smp_defconfig | 2 +-
arch/arc/configs/haps_hs_defconfig | 2 +-
arch/arc/configs/haps_hs_smp_defconfig | 2 +-
arch/arc/configs/hsdk_defconfig | 2 +-
arch/arc/configs/nsim_700_defconfig | 2 +-
arch/arc/configs/nsimosci_defconfig | 2 +-
arch/arc/configs/nsimosci_hs_defconfig | 2 +-
arch/arc/configs/nsimosci_hs_smp_defconfig | 2 +-
arch/arc/configs/tb10x_defconfig | 4 +-
arch/arc/configs/vdk_hs38_defconfig | 2 +-
arch/arc/configs/vdk_hs38_smp_defconfig | 2 +-
arch/arc/mm/init.c | 14 +-
arch/arm/Kconfig | 2 +-
arch/arm/boot/dts/arm/integratorap.dts | 2 +-
arch/arm/boot/dts/arm/integratorcp.dts | 2 +-
.../dts/aspeed/aspeed-bmc-facebook-cmm.dts | 2 +-
.../aspeed/aspeed-bmc-facebook-galaxy100.dts | 2 +-
.../aspeed/aspeed-bmc-facebook-minipack.dts | 2 +-
.../aspeed/aspeed-bmc-facebook-wedge100.dts | 2 +-
.../aspeed/aspeed-bmc-facebook-wedge40.dts | 2 +-
.../dts/aspeed/aspeed-bmc-facebook-yamp.dts | 2 +-
.../ast2600-facebook-netbmc-common.dtsi | 2 +-
arch/arm/boot/dts/hisilicon/hi3620-hi4511.dts | 2 +-
.../ixp/intel-ixp42x-welltech-epbx100.dts | 2 +-
arch/arm/boot/dts/nspire/nspire-classic.dtsi | 2 +-
arch/arm/boot/dts/nspire/nspire-cx.dts | 2 +-
.../boot/dts/samsung/exynos4210-origen.dts | 2 +-
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.../boot/dts/samsung/exynos4412-smdk4412.dts | 2 +-
.../boot/dts/samsung/exynos5250-smdk5250.dts | 2 +-
arch/arm/boot/dts/st/ste-nomadik-nhk15.dts | 2 +-
arch/arm/boot/dts/st/ste-nomadik-s8815.dts | 2 +-
arch/arm/boot/dts/st/stm32429i-eval.dts | 2 +-
arch/arm/boot/dts/st/stm32746g-eval.dts | 2 +-
arch/arm/boot/dts/st/stm32f429-disco.dts | 2 +-
arch/arm/boot/dts/st/stm32f469-disco.dts | 2 +-
arch/arm/boot/dts/st/stm32f746-disco.dts | 2 +-
arch/arm/boot/dts/st/stm32f769-disco.dts | 2 +-
arch/arm/boot/dts/st/stm32h743i-disco.dts | 2 +-
arch/arm/boot/dts/st/stm32h743i-eval.dts | 2 +-
arch/arm/boot/dts/st/stm32h747i-disco.dts | 2 +-
arch/arm/boot/dts/st/stm32h750i-art-pi.dts | 2 +-
arch/arm/configs/aspeed_g4_defconfig | 8 +-
arch/arm/configs/aspeed_g5_defconfig | 8 +-
arch/arm/configs/assabet_defconfig | 4 +-
arch/arm/configs/at91_dt_defconfig | 4 +-
arch/arm/configs/axm55xx_defconfig | 2 +-
arch/arm/configs/bcm2835_defconfig | 2 +-
arch/arm/configs/clps711x_defconfig | 4 +-
arch/arm/configs/collie_defconfig | 4 +-
arch/arm/configs/davinci_all_defconfig | 2 +-
arch/arm/configs/exynos_defconfig | 4 +-
arch/arm/configs/footbridge_defconfig | 2 +-
arch/arm/configs/gemini_defconfig | 2 +-
arch/arm/configs/h3600_defconfig | 2 +-
arch/arm/configs/hisi_defconfig | 4 +-
arch/arm/configs/imx_v4_v5_defconfig | 2 +-
arch/arm/configs/imx_v6_v7_defconfig | 4 +-
arch/arm/configs/integrator_defconfig | 2 +-
arch/arm/configs/ixp4xx_defconfig | 2 +-
arch/arm/configs/keystone_defconfig | 2 +-
arch/arm/configs/lpc18xx_defconfig | 12 +-
arch/arm/configs/lpc32xx_defconfig | 4 +-
arch/arm/configs/milbeaut_m10v_defconfig | 2 +-
arch/arm/configs/multi_v4t_defconfig | 2 +-
arch/arm/configs/multi_v5_defconfig | 2 +-
arch/arm/configs/multi_v7_defconfig | 2 +-
arch/arm/configs/mvebu_v7_defconfig | 2 +-
arch/arm/configs/mxs_defconfig | 2 +-
arch/arm/configs/neponset_defconfig | 4 +-
arch/arm/configs/nhk8815_defconfig | 2 +-
arch/arm/configs/omap1_defconfig | 2 +-
arch/arm/configs/omap2plus_defconfig | 2 +-
arch/arm/configs/pxa910_defconfig | 2 +-
arch/arm/configs/pxa_defconfig | 4 +-
arch/arm/configs/qcom_defconfig | 2 +-
arch/arm/configs/rpc_defconfig | 2 +-
arch/arm/configs/s3c6400_defconfig | 4 +-
arch/arm/configs/s5pv210_defconfig | 4 +-
arch/arm/configs/sama5_defconfig | 4 +-
arch/arm/configs/sama7_defconfig | 2 +-
arch/arm/configs/shmobile_defconfig | 2 +-
arch/arm/configs/socfpga_defconfig | 2 +-
arch/arm/configs/sp7021_defconfig | 12 +-
arch/arm/configs/spear13xx_defconfig | 2 +-
arch/arm/configs/spear3xx_defconfig | 2 +-
arch/arm/configs/spear6xx_defconfig | 2 +-
arch/arm/configs/spitz_defconfig | 2 +-
arch/arm/configs/stm32_defconfig | 2 +-
arch/arm/configs/sunxi_defconfig | 2 +-
arch/arm/configs/tegra_defconfig | 2 +-
arch/arm/configs/u8500_defconfig | 4 +-
arch/arm/configs/versatile_defconfig | 2 +-
arch/arm/configs/vexpress_defconfig | 2 +-
arch/arm/configs/vf610m4_defconfig | 10 +-
arch/arm/configs/vt8500_v6_v7_defconfig | 2 +-
arch/arm/configs/wpcm450_defconfig | 2 +-
arch/arm/include/uapi/asm/setup.h | 10 -
arch/arm/kernel/atags_compat.c | 10 -
arch/arm/kernel/atags_parse.c | 16 +-
arch/arm/kernel/setup.c | 2 +-
arch/arm/mm/init.c | 24 +-
arch/arm64/configs/defconfig | 2 +-
arch/arm64/kernel/setup.c | 2 +-
arch/arm64/mm/init.c | 17 +-
arch/csky/kernel/setup.c | 24 +-
arch/csky/mm/init.c | 2 +-
arch/hexagon/configs/comet_defconfig | 2 +-
arch/loongarch/configs/loongson3_defconfig | 2 +-
arch/loongarch/kernel/mem.c | 2 +-
arch/loongarch/kernel/setup.c | 4 +-
arch/m68k/configs/amiga_defconfig | 2 +-
arch/m68k/configs/apollo_defconfig | 2 +-
arch/m68k/configs/atari_defconfig | 2 +-
arch/m68k/configs/bvme6000_defconfig | 2 +-
arch/m68k/configs/hp300_defconfig | 2 +-
arch/m68k/configs/mac_defconfig | 2 +-
arch/m68k/configs/multi_defconfig | 2 +-
arch/m68k/configs/mvme147_defconfig | 2 +-
arch/m68k/configs/mvme16x_defconfig | 2 +-
arch/m68k/configs/q40_defconfig | 2 +-
arch/m68k/configs/stmark2_defconfig | 2 +-
arch/m68k/configs/sun3_defconfig | 2 +-
arch/m68k/configs/sun3x_defconfig | 2 +-
arch/m68k/kernel/setup_mm.c | 12 +-
arch/m68k/kernel/setup_no.c | 12 +-
arch/m68k/kernel/uboot.c | 17 +-
arch/microblaze/kernel/cpu/mb.c | 2 +-
arch/microblaze/kernel/setup.c | 2 +-
arch/microblaze/mm/init.c | 12 +-
arch/mips/ath79/prom.c | 12 +-
arch/mips/configs/ath25_defconfig | 12 +-
arch/mips/configs/ath79_defconfig | 4 +-
arch/mips/configs/bcm47xx_defconfig | 2 +-
arch/mips/configs/bigsur_defconfig | 2 +-
arch/mips/configs/bmips_be_defconfig | 2 +-
arch/mips/configs/bmips_stb_defconfig | 14 +-
arch/mips/configs/cavium_octeon_defconfig | 2 +-
arch/mips/configs/eyeq5_defconfig | 2 +-
arch/mips/configs/eyeq6_defconfig | 2 +-
arch/mips/configs/generic_defconfig | 2 +-
arch/mips/configs/gpr_defconfig | 2 +-
arch/mips/configs/lemote2f_defconfig | 2 +-
arch/mips/configs/loongson2k_defconfig | 2 +-
arch/mips/configs/loongson3_defconfig | 2 +-
arch/mips/configs/malta_defconfig | 2 +-
arch/mips/configs/mtx1_defconfig | 2 +-
arch/mips/configs/rb532_defconfig | 2 +-
arch/mips/configs/rbtx49xx_defconfig | 2 +-
arch/mips/configs/rt305x_defconfig | 4 +-
arch/mips/configs/sb1250_swarm_defconfig | 2 +-
arch/mips/configs/xway_defconfig | 4 +-
arch/mips/kernel/setup.c | 53 ++-
arch/mips/mm/init.c | 2 +-
arch/mips/sibyte/common/cfe.c | 36 +-
arch/mips/sibyte/swarm/setup.c | 2 +-
arch/nios2/kernel/setup.c | 20 +-
arch/openrisc/configs/or1klitex_defconfig | 2 +-
arch/openrisc/configs/or1ksim_defconfig | 4 +-
arch/openrisc/configs/simple_smp_defconfig | 14 +-
arch/openrisc/configs/virt_defconfig | 2 +-
arch/openrisc/kernel/setup.c | 24 +-
arch/openrisc/kernel/vmlinux.h | 2 +-
arch/parisc/boot/compressed/misc.c | 2 +-
arch/parisc/configs/generic-32bit_defconfig | 2 +-
arch/parisc/configs/generic-64bit_defconfig | 2 +-
arch/parisc/defpalo.conf | 2 +-
arch/parisc/kernel/pdt.c | 6 +-
arch/parisc/kernel/setup.c | 8 +-
arch/parisc/mm/init.c | 32 +-
arch/powerpc/configs/44x/akebono_defconfig | 2 +-
arch/powerpc/configs/44x/arches_defconfig | 2 +-
arch/powerpc/configs/44x/bamboo_defconfig | 2 +-
arch/powerpc/configs/44x/bluestone_defconfig | 2 +-
.../powerpc/configs/44x/canyonlands_defconfig | 2 +-
arch/powerpc/configs/44x/ebony_defconfig | 2 +-
arch/powerpc/configs/44x/eiger_defconfig | 2 +-
arch/powerpc/configs/44x/fsp2_defconfig | 10 +-
arch/powerpc/configs/44x/icon_defconfig | 2 +-
arch/powerpc/configs/44x/iss476-smp_defconfig | 2 +-
arch/powerpc/configs/44x/katmai_defconfig | 2 +-
arch/powerpc/configs/44x/rainier_defconfig | 2 +-
arch/powerpc/configs/44x/redwood_defconfig | 2 +-
arch/powerpc/configs/44x/sam440ep_defconfig | 2 +-
arch/powerpc/configs/44x/sequoia_defconfig | 2 +-
arch/powerpc/configs/44x/taishan_defconfig | 2 +-
arch/powerpc/configs/44x/warp_defconfig | 2 +-
arch/powerpc/configs/52xx/cm5200_defconfig | 2 +-
arch/powerpc/configs/52xx/lite5200b_defconfig | 2 +-
arch/powerpc/configs/52xx/motionpro_defconfig | 2 +-
arch/powerpc/configs/52xx/tqm5200_defconfig | 2 +-
arch/powerpc/configs/83xx/asp8347_defconfig | 2 +-
.../configs/83xx/mpc8313_rdb_defconfig | 2 +-
.../configs/83xx/mpc8315_rdb_defconfig | 2 +-
.../configs/83xx/mpc832x_rdb_defconfig | 2 +-
.../configs/83xx/mpc834x_itx_defconfig | 2 +-
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.../configs/83xx/mpc836x_rdk_defconfig | 2 +-
.../configs/83xx/mpc837x_rdb_defconfig | 2 +-
arch/powerpc/configs/85xx/ge_imp3a_defconfig | 2 +-
arch/powerpc/configs/85xx/ksi8560_defconfig | 2 +-
arch/powerpc/configs/85xx/socrates_defconfig | 2 +-
arch/powerpc/configs/85xx/stx_gp3_defconfig | 2 +-
arch/powerpc/configs/85xx/tqm8540_defconfig | 2 +-
arch/powerpc/configs/85xx/tqm8541_defconfig | 2 +-
arch/powerpc/configs/85xx/tqm8548_defconfig | 2 +-
arch/powerpc/configs/85xx/tqm8555_defconfig | 2 +-
arch/powerpc/configs/85xx/tqm8560_defconfig | 2 +-
.../configs/85xx/xes_mpc85xx_defconfig | 2 +-
arch/powerpc/configs/amigaone_defconfig | 2 +-
arch/powerpc/configs/cell_defconfig | 2 +-
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arch/powerpc/configs/fsl-emb-nonhw.config | 2 +-
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arch/powerpc/configs/holly_defconfig | 2 +-
arch/powerpc/configs/linkstation_defconfig | 2 +-
arch/powerpc/configs/mgcoge_defconfig | 4 +-
arch/powerpc/configs/microwatt_defconfig | 2 +-
arch/powerpc/configs/mpc512x_defconfig | 2 +-
arch/powerpc/configs/mpc5200_defconfig | 2 +-
arch/powerpc/configs/mpc83xx_defconfig | 2 +-
arch/powerpc/configs/pasemi_defconfig | 2 +-
arch/powerpc/configs/pmac32_defconfig | 2 +-
arch/powerpc/configs/powernv_defconfig | 2 +-
arch/powerpc/configs/ppc44x_defconfig | 2 +-
arch/powerpc/configs/ppc64_defconfig | 2 +-
arch/powerpc/configs/ppc64e_defconfig | 2 +-
arch/powerpc/configs/ppc6xx_defconfig | 2 +-
arch/powerpc/configs/ps3_defconfig | 2 +-
arch/powerpc/configs/skiroot_defconfig | 12 +-
arch/powerpc/configs/wii_defconfig | 2 +-
arch/powerpc/kernel/prom.c | 22 +-
arch/powerpc/kernel/prom_init.c | 6 +-
arch/powerpc/kernel/setup-common.c | 25 +-
arch/powerpc/kernel/setup_32.c | 2 +-
arch/powerpc/kernel/setup_64.c | 2 +-
arch/powerpc/mm/init_32.c | 2 +-
arch/powerpc/platforms/52xx/lite5200.c | 2 +-
arch/powerpc/platforms/83xx/km83xx.c | 2 +-
arch/powerpc/platforms/85xx/mpc85xx_mds.c | 2 +-
arch/powerpc/platforms/chrp/setup.c | 2 +-
.../platforms/embedded6xx/linkstation.c | 2 +-
.../platforms/embedded6xx/storcenter.c | 2 +-
arch/powerpc/platforms/powermac/setup.c | 8 +-
arch/riscv/configs/defconfig | 2 +-
arch/riscv/configs/nommu_k210_defconfig | 16 +-
arch/riscv/configs/nommu_virt_defconfig | 12 +-
arch/riscv/mm/init.c | 4 +-
arch/s390/boot/ipl_parm.c | 2 +-
arch/s390/boot/startup.c | 4 +-
arch/s390/configs/zfcpdump_defconfig | 2 +-
arch/s390/kernel/setup.c | 10 +-
arch/s390/mm/init.c | 2 +-
arch/sh/configs/apsh4a3a_defconfig | 2 +-
arch/sh/configs/apsh4ad0a_defconfig | 2 +-
arch/sh/configs/ecovec24-romimage_defconfig | 2 +-
arch/sh/configs/edosk7760_defconfig | 2 +-
arch/sh/configs/kfr2r09-romimage_defconfig | 2 +-
arch/sh/configs/kfr2r09_defconfig | 2 +-
arch/sh/configs/magicpanelr2_defconfig | 2 +-
arch/sh/configs/migor_defconfig | 2 +-
arch/sh/configs/rsk7201_defconfig | 2 +-
arch/sh/configs/rsk7203_defconfig | 2 +-
arch/sh/configs/sdk7786_defconfig | 8 +-
arch/sh/configs/se7206_defconfig | 2 +-
arch/sh/configs/se7705_defconfig | 2 +-
arch/sh/configs/se7722_defconfig | 2 +-
arch/sh/configs/se7751_defconfig | 2 +-
arch/sh/configs/secureedge5410_defconfig | 2 +-
arch/sh/configs/sh03_defconfig | 2 +-
arch/sh/configs/sh7757lcr_defconfig | 2 +-
arch/sh/configs/titan_defconfig | 2 +-
arch/sh/configs/ul2_defconfig | 2 +-
arch/sh/configs/urquell_defconfig | 2 +-
arch/sh/include/asm/setup.h | 1 -
arch/sh/kernel/head_32.S | 2 +-
arch/sh/kernel/setup.c | 27 +-
arch/sparc/boot/piggyback.c | 4 +-
arch/sparc/configs/sparc32_defconfig | 2 +-
arch/sparc/configs/sparc64_defconfig | 2 +-
arch/sparc/kernel/head_32.S | 4 +-
arch/sparc/kernel/head_64.S | 6 +-
arch/sparc/kernel/setup_32.c | 9 +-
arch/sparc/kernel/setup_64.c | 9 +-
arch/sparc/mm/init_32.c | 22 +-
arch/sparc/mm/init_64.c | 20 +-
arch/um/kernel/Makefile | 2 +-
arch/um/kernel/initrd.c | 6 +-
arch/x86/Kconfig | 2 +-
arch/x86/boot/header.S | 2 +-
arch/x86/boot/startup/sme.c | 2 +-
arch/x86/configs/i386_defconfig | 2 +-
arch/x86/configs/x86_64_defconfig | 2 +-
arch/x86/include/uapi/asm/bootparam.h | 7 +-
arch/x86/kernel/cpu/microcode/amd.c | 2 +-
arch/x86/kernel/cpu/microcode/core.c | 12 +-
arch/x86/kernel/cpu/microcode/intel.c | 2 +-
arch/x86/kernel/cpu/microcode/internal.h | 2 +-
arch/x86/kernel/devicetree.c | 2 +-
arch/x86/kernel/setup.c | 39 +-
arch/x86/mm/init.c | 8 +-
arch/x86/mm/init_32.c | 2 +-
arch/x86/mm/init_64.c | 2 +-
arch/x86/tools/relocs.c | 2 +-
arch/xtensa/Kconfig | 2 +-
arch/xtensa/boot/dts/csp.dts | 2 +-
arch/xtensa/configs/audio_kc705_defconfig | 2 +-
arch/xtensa/configs/cadence_csp_defconfig | 12 +-
arch/xtensa/configs/generic_kc705_defconfig | 2 +-
arch/xtensa/configs/nommu_kc705_defconfig | 12 +-
arch/xtensa/configs/smp_lx200_defconfig | 2 +-
arch/xtensa/configs/virt_defconfig | 2 +-
arch/xtensa/configs/xip_kc705_defconfig | 2 +-
arch/xtensa/kernel/setup.c | 26 +-
drivers/acpi/Kconfig | 2 +-
drivers/acpi/tables.c | 10 +-
drivers/base/firmware_loader/main.c | 2 +-
drivers/block/Kconfig | 8 +-
drivers/block/brd.c | 20 +-
drivers/firmware/efi/efi.c | 10 +-
.../firmware/efi/libstub/efi-stub-helper.c | 5 +-
drivers/gpu/drm/ci/arm.config | 2 +-
drivers/gpu/drm/ci/arm64.config | 2 +-
drivers/gpu/drm/ci/x86_64.config | 2 +-
drivers/of/fdt.c | 18 +-
fs/ext2/ext2.h | 9 -
fs/init.c | 14 -
include/asm-generic/vmlinux.lds.h | 8 +-
include/linux/ext2_fs.h | 13 -
include/linux/init_syscalls.h | 1 -
include/linux/initramfs.h | 26 ++
include/linux/initrd.h | 37 --
include/linux/root_dev.h | 1 -
include/linux/syscalls.h | 1 -
include/uapi/linux/sysctl.h | 1 -
init/.kunitconfig | 2 +-
init/Kconfig | 28 +-
init/Makefile | 6 +-
init/do_mounts.c | 28 +-
init/do_mounts.h | 42 --
init/do_mounts_initrd.c | 154 -------
init/do_mounts_rd.c | 334 ---------------
init/initramfs.c | 152 ++++---
init/main.c | 66 +--
kernel/sys.c | 7 +-
kernel/sysctl.c | 2 +-
kernel/umh.c | 2 +-
scripts/package/builddeb | 2 +-
.../ktest/examples/bootconfigs/tracing.bconf | 3 -
tools/testing/selftests/bpf/config.aarch64 | 2 +-
tools/testing/selftests/bpf/config.ppc64el | 2 +-
tools/testing/selftests/bpf/config.riscv64 | 2 +-
tools/testing/selftests/bpf/config.s390x | 2 +-
tools/testing/selftests/kho/vmtest.sh | 2 +-
.../testing/selftests/nolibc/Makefile.nolibc | 4 +-
tools/testing/selftests/vsock/config | 2 +-
.../selftests/wireguard/qemu/kernel.config | 2 +-
usr/Kconfig | 70 ++--
usr/Makefile | 2 +-
usr/initramfs_data.S | 4 +-
385 files changed, 969 insertions(+), 2346 deletions(-)
delete mode 100644 Documentation/admin-guide/initrd.rst
delete mode 100644 Documentation/power/swsusp-dmcrypt.rst
create mode 100644 include/linux/initramfs.h
delete mode 100644 include/linux/initrd.h
delete mode 100644 init/do_mounts_initrd.c
delete mode 100644 init/do_mounts_rd.c
base-commit: 76eeb9b8de9880ca38696b2fb56ac45ac0a25c6c
--
2.47.2
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