Re: x86_64 command line truncated

[Andy Whitcroft]

Andi Kleen wrote:
> 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.
>
> -Andi

Well I've narroed it down to the following patch from Andrew:

x86_64-mm-early-param.patch

Basically, that leads setup_arch to return saved_command_line as _the_ 
command_line.  We then run parse_args() against it which assumes it may 
irrevocabaly change command_line.  Previous to this patch 
saved_command_line and command_line were separate and this was not an issue.

It feels like we should be following the model in the newly added 
parse_early_parms() and taking a local copy of the command_line here.

-apw
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