There does appear to be a limit on the number of parameters accepted by the kernel at boot-time, so this changeset updates the kernel-parameters.rst documentation to reflect that. Signed-off-by: James Addison <jay@xxxxxxxxxxxxxx> --- Documentation/admin-guide/kernel-parameters.rst | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/Documentation/admin-guide/kernel-parameters.rst b/Documentation/admin-guide/kernel-parameters.rst index 19600c502..a3a099127 100644 --- a/Documentation/admin-guide/kernel-parameters.rst +++ b/Documentation/admin-guide/kernel-parameters.rst @@ -203,7 +203,8 @@ be entered as an environment variable, whereas its absence indicates that it will appear as a kernel argument readable via /proc/cmdline by programs running once the system is up. -The number of kernel parameters is not limited, but the length of the +The number of kernel parameters is limited to 32 by default (128 in User Mode +Linux), and is defined in ./init/main.c as MAX_INIT_ARGS. The length of the complete command line (parameters including spaces etc.) is limited to a fixed number of characters. This limit depends on the architecture and is between 256 and 4096 characters. It is defined in the file base-commit: e492250d5252635b6c97d52eddf2792ec26f1ec1 -- 2.39.2
