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Re: how to increase commandline size (patch + changelog)


From: Marco Gerards
Subject: Re: how to increase commandline size (patch + changelog)
Date: Tue, 10 Oct 2006 18:08:12 +0200
User-agent: Gnus/5.110004 (No Gnus v0.4) Emacs/21.4 (gnu/linux)

Hollis Blanchard <address@hidden> writes:

> On Tue, 2006-10-10 at 16:38 +0200, Marco Gerards wrote:
>> 
>> - Add some run-time argument to the loader to override the command
>>   line length.  But I do not like this either because it allows
>>   breaking the Linux boot protocol. 
>
> What exactly happens if we give the kernel a longer cmdline than it
> supports? Does it just truncate, or fail to boot?

It truncates.

> Why not allow users to pass as much as they want, and just warn them if
> it's >255?

I am not sure what the impact is.  Linux has a memory map and I assume
the memory after the commandline is used for other things, or might be
overwritten.

--
Marco






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