linux-kernel - Re: [PATCH 15/15] riscv: add binfmt

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Date:   Tue, 11 Jun 2019 11:20:07 +0200
From:   Christoph Hellwig <hch@....de>
To:     Vladimir Murzin <vladimir.murzin@....com>
Cc:     Christoph Hellwig <hch@....de>, Greg Ungerer <gerg@...ux-m68k.org>,
        uclinux-h8-devel@...ts.sourceforge.jp,
        linux-xtensa@...ux-xtensa.org, Michal Simek <monstr@...str.eu>,
        linux-c6x-dev@...ux-c6x.org, linux-sh@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-m68k@...ts.linux-m68k.org,
        linux-riscv@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 15/15] riscv: add binfmt_flat support

On Tue, Jun 11, 2019 at 09:16:43AM +0100, Vladimir Murzin wrote:
> On 6/10/19 10:20 PM, Christoph Hellwig wrote:
> > Use the generic support with arguments are on the stack.  Same as arm
> > and m68k.
> 
> Out of curiosity, what is reason for keeping arguments on the stack?
> 
> ARM port of uClibc has following comment around manipulating of argv/argc:
> 
>         /*
>          * uClinux/arm stacks look a little different from normal
>          * MMU-full Linux/arm stacks (for no good reason)
>          */
> 
> So I though it is kind of legacy.

I just copied m68k and arm.  But dropping this makes the uclinux
crt1 code simpler, so I'll drop the flag for the next version.