Alexander Graf 2678fd2fe9 initramfs: Expose retained initrd as sysfs file ... When the kernel command line option "retain_initrd" is set, we do not free the initrd memory. However, we also don't expose it to anyone for consumption. That leaves us in a weird situation where the only user of this feature is ppc64 and arm64 specific kexec tooling. To make it more generally useful, this patch adds a kobject to the firmware object that contains the initrd context when "retain_initrd" is set. That way, we can access the initrd any time after boot from user space and for example hand it into kexec as --initrd parameter if we want to reboot the same initrd. Or inspect it directly locally. With this patch applied, there is a new /sys/firmware/initrd file when the kernel was booted with an initrd and "retain_initrd" command line option is set. Signed-off-by: Alexander Graf <graf@amazon.com> Tested-by: Bagas Sanjaya <bagasdotme@gmail.com> Link: https://lore.kernel.org/r/20231207235654.16622-1-graf@amazon.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-12-15 17:23:00 +01:00
..
.gitignore
build-version
calibrate.c
do_mounts.c	init/mount: print pretty name of root device when panics	2023-10-19 11:02:46 +02:00
do_mounts.h
do_mounts_initrd.c
do_mounts_rd.c
init_task.c	As usual, lots of singleton and doubleton patches all over the tree and	2023-11-02 20:53:31 -10:00
initramfs.c	initramfs: Expose retained initrd as sysfs file	2023-12-15 17:23:00 +01:00
Kconfig
main.c	proc: sysctl: prevent aliased sysctls from getting passed to init	2023-11-01 12:10:02 -07:00
Makefile	x86/retpoline: Make sure there are no unconverted return thunks due to KCSAN	2023-10-20 13:02:23 +02:00
noinitramfs.c
version-timestamp.c
version.c