[PATCH RESEND 05/62] init: remove "ramdisk_start" command line parameter, which controls starting block number of initrd

Askar Safin
2025-09-13T00:45:30Z

This is preparation for initrd removal

Signed-off-by: Askar Safin <safinaskar@gmail.com>
---
Documentation/admin-guide/blockdev/ramdisk.rst | 3 +--
Documentation/admin-guide/kernel-parameters.txt | 2 --
init/do_mounts_rd.c | 7 -------
3 files changed, 1 insertion(+), 11 deletions(-)

diff --git a/Documentation/admin-guide/blockdev/ramdisk.rst b/Documentation/admin-guide/blockdev/ramdisk.rst
index 9ce6101e8dd9..e57c61108dbc 100644
--- a/Documentation/admin-guide/blockdev/ramdisk.rst
+++ b/Documentation/admin-guide/blockdev/ramdisk.rst
@@ -74,12 +74,11 @@ arch/x86/boot/Makefile.

Some of the kernel command line boot options that may apply here are::

- ramdisk_start=N
ramdisk_size=M

If you make a boot disk that has LILO, then for the above, you would use::

- append = "ramdisk_start=N ramdisk_size=M"
+ append = "ramdisk_size=M"

4) An Example of Creating a Compressed RAM Disk
-----------------------------------------------
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index f940c1184912..07e8878f1e13 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -5285,8 +5285,6 @@
ramdisk_size= [RAM] Sizes of RAM disks in kilobytes
See Documentation/admin-guide/blockdev/ramdisk.rst.

- ramdisk_start= [RAM] RAM disk image start address
-
random.trust_cpu=off
[KNL,EARLY] Disable trusting the use of the CPU's
random number generator (if available) to
diff --git a/init/do_mounts_rd.c b/init/do_mounts_rd.c
index 8e0a774a9c6f..864fa88d9f89 100644
--- a/init/do_mounts_rd.c
+++ b/init/do_mounts_rd.c
@@ -17,13 +17,6 @@
static struct file *in_file, *out_file;
static loff_t in_pos, out_pos;

-static int __init ramdisk_start_setup(char *str)
-{
- /* will be removed in next commit */
- return 1;
-}
-__setup("ramdisk_start=", ramdisk_start_setup);
-
static int __init crd_load(decompress_fn deco);

/*
--
2.47.2