linux-kernel - Re: [PATCH v3 1/2] printk: console: Create console= parser that supports named options

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Message-ID: <ZD6envPT9YHVEaAx@alley>
Date:   Tue, 18 Apr 2023 15:43:58 +0200
From:   Petr Mladek <pmladek@...e.com>
To:     Chris Down <chris@...isdown.name>
Cc:     linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        John Ogness <john.ogness@...utronix.de>,
        Geert Uytterhoeven <geert@...ux-m68k.org>, kernel-team@...com
Subject: Re: [PATCH v3 1/2] printk: console: Create console= parser that
 supports named options

On Mon 2023-04-17 16:08:11, Chris Down wrote:
> Chris Down writes:
> > Any thoughts on something simple like this that takes advantage of
> > memmove()? This should overcome the mmio/io concerns, and it's fairly
> > simple.
> 
> (although coming to think of it, this can just use memcpy(), but the same
> idea applies)

I think that we have to use memmove() because the locations might be
overlaping. The to-be-moved options might be longer than the replaced
option.

Best Regards,
Petr