Messages in this thread | | | Date | Tue, 21 Feb 2023 15:05:15 -0800 | Subject | Re: [PATCH] Documentation: update kernel parameter limit notes | From | Randy Dunlap <> |
| |
Hi,
On 2/21/23 10:34, James Addison wrote: > 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@jp-hosting.net> > --- > 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 959f73a32..12cbf46b6 100644 > --- a/Documentation/admin-guide/kernel-parameters.rst > +++ b/Documentation/admin-guide/kernel-parameters.rst > @@ -204,7 +204,8 @@ 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
I agree with your patch, but you will need to Cc: some maintainer on your (next) email/patch so that they can apply/merge it (if they want to).
Thanks. -- ~Randy
| |