From: Arnd Bergmann <arnd@arndb.de>
To: =?iso-8859-1?q?Bj=F6rn_Steinbrink?= <B.Steinbrink@gmx.de>
Subject: Re: [PATCH] introduce kernel_execve function to replace __KERNEL_SYSCALLS__
Date: Tue, 22 Aug 2006 12:06:59 +0200
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Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
       Paul Mackerras <paulus@samba.org>,
       Russell King <rmk+lkml@arm.linux.org.uk>, Andrew Morton <akpm@osdl.org>,
       rusty@rustcorp.com.au, linux-kernel@vger.kernel.org,
       linux-arch@vger.kernel.org
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On Tuesday 22 August 2006 10:00, Bj?rn Steinbrink wrote:
> I'm working on a patch loosely based on Arnd's that changes the
> in-kernel syscall macros to directly return the error codes.

I think that is still going in the wrong direction. Traditionally,
the macros in unistd.h were meant for user space, but we're now
discouraging that strongly (i.e. they are inside of #ifdef __KERNEL__).
The only in-kernel users on the _syscall macros used to by the
__KERNEL_SYSCALLS__ that we're trying to kill.

The logical consequence should be that we remove the _syscall macros
entirely, for all architectures.
UML can be converted to use the syscall function provided by libc
in order to call the host OS.

	Arnd <><
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