linux-kernel - Re: [PATCH 6/7] remove all remaining

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Date:	Mon, 28 Aug 2006 10:28:13 +0200
From:	Andi Kleen <ak@...e.de>
To:	David Miller <davem@...emloft.net>
Cc:	arnd@...db.de, linux-arch@...r.kernel.org, jdike@...toit.com,
	B.Steinbrink@....de, arjan@...radead.org,
	chase.venters@...entec.com, akpm@...l.org,
	rmk+lkml@....linux.org.uk, rusty@...tcorp.com.au,
	linux-kernel@...r.kernel.org, dwmw2@...radead.org
Subject: Re: [PATCH 6/7] remove all remaining _syscallX macros

On Monday 28 August 2006 10:19, David Miller wrote:

> I see it as duplication because the person who writes the
> kernel is the one who ends up writing the libc syscall
> bits or explains to the libc person for that arch how
> things work.  

And the way to explain it is to write the reference code.

> And once one libc implmenetation of this 
> exists, it can be used as a reference for other libc
> variants.

At least on x86-64 various glibc versions had quite buggy
syscall()s, that is why I never trusted it very much.
 
> Finally, once it's done, it's done, and that's it.

Except if you still have to deal with old user land.

-Andi
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