On Mon, Aug 11, 2025 at 04:37:36PM +0100, Usama Arif wrote: > If the kernel is enabled with CONFIG_BOOT_CONFIG_FORCE, it will > always append the bootconfig at the start of the kernel commandline. > If reuse-cmdline option is used in kexec, the bootconfig will be > repeatedly appended at the start of the commandline on every kexec. > As there is a limit on the size of kernel commandline that can be > used, --reuse-cmdline option will break kexec depending on the > size of bootconfig on repeated kexec. > > Bootconfig is embedded in the kernel, so it should not be considered > when reusing kernel command line. > Modify get_command_line() to first attempt reading kernel parameters > from /proc/bootconfig before falling back to /proc/cmdline. This allows > kexec to use the original boot parameters without bootconfig which > is embedded in the kernel. > > The function will fallback to /proc/cmdline behavior when: > > - /proc/bootconfig doesn't exist > - /proc/bootconfig is empty > - /proc/bootconfig doesn't contain the expected marker format > - The extracted parameter line is empty > > Signed-off-by: Usama Arif <usamaarif...@gmail.com>
Reviewed-by: Breno Leitao <lei...@debian.org>
