Re: x86_64 command line truncated

From: Andrew Morton
Date: Mon Aug 07 2006 - 11:13:10 EST

On Mon, 07 Aug 2006 15:38:49 +0100
Andy Whitcroft <apw@xxxxxxxxxxxx> wrote:

> 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

Not me. My only contribution to that patch was to scrog the changelog ;)
I'll be fixing that sometime.

I think that patch doesn't have a future, although Andi hasn't yet dropped it.

> 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.

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