Re: x86_64 command line truncated II

Andy Whitcroft
2006-08-07T14:44:08Z

Andi Kleen wrote:
> Andi Kleen <ak@suse.de> writes:
>
>> Andy Whitcroft <apw@shadowen.org> writes:
>>
>>> It seems that the command line on x86_64 is being truncated during boot:
>> in mm right?
>>> Will try and track it down.
>> Don't bother, it is likely "early-param" (the patch from
>> hell). I'll investigate.
>
> Following up myself ...
>
> Are you sure it's a regression? 2.6.17 does the same
> and we always had that 255 character limit (I tried
> to increase it once, but it broke some old lilo setups)
>
> i386 should be the same btw.

Its not being truncated at 255 characters, its being truncated at the
first space. This is coming out of parse_args, which dumps '\0's into
the command_line as it rips it apart. We now only have one copy of the
command line (in x86_64) instead of two, so we now expose this trashed
copy in /proc/cmdline.

-apw