Re: x86_64 command line truncated II

From: Andy Whitcroft
Date: Mon Aug 07 2006 - 10:41:45 EST

Andi Kleen wrote:
Andi Kleen <ak@xxxxxxx> writes:

Andy Whitcroft <apw@xxxxxxxxxxxx> 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.

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